Kugadzira PCB yeTMM Yakakwira Frequency

Kugadzirwa kweTMM high-frequency PCB kunoshandisa kuvakwa kweTMM kwakatsanangurwa kuRF, microwave uye mabhodhi ecircuit anovimbika zvakanyanya. Ukobvu hwe dielectric hwakapedzwa, copper geometry, drilling, registration uye impedance-verification plan zvinofanirwa kuenderana neRF design. Kusarudzwa kwegiredhi kunoramba kuri kwakakosha nekuti dielectric constant, dissipation factor, laminate thickness, copper profile uye stackup symmetry zvese zvinopesvedzera circuit yakapedzwa.

Gwaro iri rinotsanangura masarudzo eRogers TMM3, TMM4, TMM6, TMM10, TMM10i neTMM13i; kuti hunhu hwezvinhu hunokanganisa sei PCB chaiyo; zvekufunga nezvazvo mu microstrip, stripline uye hybrid stackups; uye kuti ndeapi mashoko anofanira kuiswa pakukumbira Rogers TMM PCB quotation. Kana uri kuongorora TMM yemafirita, ma couplers, ma antenna, radar modules, satellite communication boards, power amplifiers kana precision microwave assemblies, peji rino rakanyorwa kuti rikubatsire kuita sarudzo yeinjiniya nekugadzira.

Gwaro iri rinotsanangura zvinodzora kugadzirwa zvinofanana nemabhodhi eTMM ane frequency yakakwira, kusanganisira kuburitswa kwemastackup, tsananguro yemhangura, kuboora, kunyoresa uye kuchengetedzwa kweimpedance. Zvinodiwa zvinoenderana negiredhi uye zvekushandisa zvinofanirwa kuongororwa zvichienderana nedhizaini yakaburitswa.

Kugadzirwa kwePCB yeTMM High Frequency

PCB yeRogers TMM inoshandisa thermoset microwave laminate yeRogers TMM seRF dielectric layer. TMM laminates ipolymer composites dzakazadzwa neceramic dzakagadzirirwa microstrip uye stripline microwave circuits, saka hurukuro iri pano inofanira kuverengwa pamwe chete nezvinodiwa zvekugadzira PCB zveRogers TMM RF zvakaita se controlled impedance, reference planes uye RF transitions. Mubhodhi rapera, laminate iyi haisi chete mechanical carrier ye copper traces; chikamu chekugadzirwa kwemagetsi. Dielectric constant controls trace impedance yayo, electrical length, resonant frequency uye wavelength mukati mebhodhi. Dissipation factor yayo inobatsira pakurasikirwa ne dielectric. Kushivirira kwayo ukobvu, copper adhesion, dimensional stability uye thermal expansion zvinokanganisa kuti PCB yakagadzirwa inoenderana sei ne simulation; kune magadzirirwo apo Drk drift uye thermal cycling ndizvo zvinonyanya kukosha, ona gwara rine chekuita ne Rogers TMM temperature-stable PCB behavior.

Izwi rekuti "TMM" rinowanzo tsvakwa sekunge raive chinhu chimwe chete, asi chaizvoizvo imhuri yema laminates. Mhuri iyi inosanganisira ma dielectric constants akaderera kusvika akakwira, kubva kuTMM3 pamucheto weDk wakaderera kusvika kuTMM13i pamucheto weDk wakakwirira. Izvi zvinobvumira mainjiniya kusarudza laminate zvichienderana nehukuru hwedunhu, bandwidth, bhajeti rekurasikirwa, simba, kuvimbika kwemuchina uye mutengo. Broadband Rogers TMM antenna PCB feed ingangoda zvinhu zveDk TMM zvakaderera kuti ichengetedze ma trace dimensions achigadzirwa uye kupararira kwacho kwakaderera. Compact filter, coupler kana ceramic-substrate inotsiva ingangoda TMM10, TMM10i kana TMM13i kuderedza saizi yedunhu uye kutsigira maitiro eDk anodzora.

Mukuita, Rogers TMM PCB inosarudzwa kana dhizaini ichida kudzokororwa kwemagetsi uye kugadzikana kwe microwave kupfuura zvinogona kupihwa neFR4, asi inodawo maitiro ari nani emakanika uye maitiro kupfuura zvinhu zvakawanda zvakapfava zvePTFE. TMM sisitimu ye thermoset, saka inodzivirira kuyerera kwemvura inoyerera uye inotonhora zviri nani kupfuura PTFE. Haidiwo sodium naphthenate kurapwa isati yaiswa electroless plating muzvivakwa zveTMM zvakajairwa, izvo zvinogona kurerutsa kugadzirwa kwePCB zvichienzaniswa nezvimwe zvinhu zvePTFE microwave. Hunhu ihwohwo hwakakosha kana bhodhi riine maburi akawanda akaputirwa, ma blind vias kana akavigwa, tight registration, wire bonding areas, kana kupisa kwakawanda; ndizvo zvakare zvinoita kuti nzira yekugadzira iongororwe nekukurumidza nechitoro chine ruzivo mukugadzira Rogers TMM PCB.

Zvinodiwa zveinjiniya zvakakosha

Vasati vaburitsa TMM PCB ine frequency yepamusoro, mainjiniya nevatengi vanowanzo fanira kupindura mibvunzo yakati wandei inoshanda:

• Ndeipi Rogers TMM grade yandinofanira kushandisa: TMM3, TMM4, TMM6, TMM10, TMM10i kana TMM13i?
• Ndezvipi zviratidzo zveDk neDf, uye ndeapi maDk anofanira kushandiswa mu field solver?
• TMM iri nani pane RO4350B, RT/duroid 5880 kana alumina pakugadzira kwangu here?
• Mugadziri wePCB anogona kugadzirisa TMM nematanho akajairwa ekuboorera, kuputira uye kuendesa zvinhu, uye ndinofanira kubatanidza mugadziri weRogers TMM PCB riini?
• Ndeipi foil yemhangura uye kupedzisa kwepamusoro kunofanirwa kushandiswa kuderedza kurasikirwa kweRF?
• TMM inogona kushandiswa here mu hybrid multilayer stackup ine FR4 kana imwe Rogers laminate?
• Ruzivo rupi runofanira kupihwa kuti mutengo weRogers TMM PCB uve wakarurama uye kudzivirira njodzi yekugadzira?

Zvikamu zviri pazasi zvinopindura mibvunzo iyoyo kubva pamaonero emutengi wePCB, mainjiniya weRF uye mugadziri.

Nei Vagadziri Vachisarudza Rogers TMM yeHigh-Frequency PCBs

Maitiro e dielectric akagadzikana ematunhu eRF akagadziridzwa

Maseketi emagetsi ane frequency yakakwira anonzwa shanduko yenguva dzose ye dielectric, ndosaka kugadzikana kwezvinhu, kudzora stackup uye maitiro eRF layout zvichifanira kutorwa senzira imwe chete yekugadzira pane kuti zvive zvakasiyana. Kukanganisa kudiki kweDk kunogona kuchinja frequency yepakati pefirita, kuchinja phase yenetwork yekudyisa, kubvisa antenna, kana kutamisa network inoenderana kubva panzvimbo ye impedance yakatarwa. Zvinhu zveRogers TMM zvakagadzirwa kuti zvishandiswe mu microwave, zvine ma dielectric constants anodzorwa uye zvinhu zvishoma zvinoparadzira mumhuri yese. Izvi zvinoita kuti zvive zvakakodzera kupfuura commodity FR4 kana copper geometry ichifanira kushandura kuita RF performance inogoneka.

Mumabhodhi edhijitari ane mafrequency akaderera, dielectric variation inogona kutorwa ne timing margin kana equalization. Muma microwave boards, zvisinei, laminate inova chikamu che circuit equation. Mutsetse we quarter-wave, branch-line coupler, interdigital filter kana patch antenna zvinogona kutadza kushanda nekuti dielectric constant chaiyo inoshanda haisiyo yaifungidzirwa nemuenzaniso. Kushandisa laminate inozivikanwa ine mafrequency akakwirira kunobatsira kuderedza kusava nechokwadi uku usati wagadzira prototype yekutanga; kune mitemo yakakura yeRF layout pamusoro penzira yekudzoka uye shanduko, enzanisa gwara iri nepeji reRogers TMM RF PCB.

Kuomarara kwethermoset pachinzvimbo chekupfava kwePTFE

Mazhinji ma microwave laminates asinganyanyi kurasikirwa akagadzirwa nePTFE. PTFE inopa simba rakanaka rekurasikirwa nemagetsi, asi inogona kunge yakapfava uye ingangoda kugadziriswa kana kugadziriswa kwakakosha. Rogers TMM inopa vagadziri mwero wakasiyana: inobatanidza kurasikirwa kwe dielectric kushoma nechimiro che thermoset chakasimba. Kubatsira kwayo hakusi kungorerutsa michina chete. Kusimba kunobatsira kunyoresa, mhando yemaburi, kugadzikana kwe copper pattern, kugadzikana kwe assembly uye kugadzikana kwenguva refu.

Izvi zvinokosha mukugadzirwa chaiko, kunyanya kana purojekiti ichichinja kubva pakusarudzwa kwezvinhu kuenda pakuboorwa, kuputira, kutenderera uye kuongorora. Kana PCB iine dense kuburikidza nefenzi, makomba ekukwirisa akafukidzwa, RF yakasanganiswa uye circuitry yekudzora, kana kuvaka kwakawanda, mugadziri anofanira kuboorwa, kuputira, mufananidzo, kutema, kunyungudutsa uye kufambisa bhodhi kakawanda. Chinhu chinodzivirira kukwira, kuyerera kwechando uye kukuvara kwemaitiro chiri nyore kuchengetedza mukati mekutsungirira, izvo zvinoderedza njodzi mukugadzirwa kweTMM. Ndicho chimwe chezvikonzero zvikuru nei TMM ichishandiswa mukuda ma assemblies ane frequency yakakwira pachinzvimbo chekusarudzwa chete neDk neDf nhamba. Highleap inoshandisa giredhi rezvinhu zvakaburitswa uye stackup kugadzirisa nzira yekugadzira pachinzvimbo chekushandisa resipi imwe chete yeTMM kune yega yega dhizaini. Mhedzisiro yacho ihwindo rekuita rakasungirirwa kune giredhi, ukobvu hwebhodhi, chimiro chegomba uye RF geometry yepurojekiti chaiyo. Hunhu chaihwo hwezvinhu hunofanirwa kuongororwa zvichienderana negwaro remupi wezvino wegiredhi rakatarwa uye kuvaka.

Sarudzo dzeHigh-Dk dzemagadzirirwo ema microwave akamanikana

Mhuri yeTMM inosanganisira madhigirii epamusoro eDk akadai seTMM10, TMM10i uye TMM13i. Zvinhu izvi zvinobvumira maRF structures madiki nekuti wavelength iri mukati me dielectric inoderera sezvo dielectric constant ichiwedzera. Mafirita, ma resonator, ma couplers uye mamwe ma antenna structures anogona kuva madiki zvakanyanya kana zvichienzaniswa nezvinhu zveDk zvakaderera.

High Dk haisi nani otomatiki. Inogona kuderedza bandwidth, kuwedzera kunzwa kune zvinotenderwa, kuita kuti upamhi hwetrace huve hudiki uye kuwedzera huwandu hwemagetsi. Asi kana miniaturization iri chinhu chinodiwa chaizvo, magiredhi eDk TMM ane high-Dk anopa nzira inoshanda pasina kuenda kune brittle ceramic substrates pakarepo. Kune mamwe magadzirirwo, kunyanya ayo kare aishandisa alumina pakushanda kweDk ine high-Dk, high-Dk TMM PCB inogona kupa nzira yekugadzira yakafanana nePCB uye inofanira kuongororwa neRF performance uye Rogers TMM PCB cost in mind.

Kuvimbika kwakanaka kwepaburi rakaputirwa

Zvinhu zveRogers TMM zvine ma coefficients ekuwedzera kwekupisa anoenderana zvakanyanya nemhangura. Izvi zvakakosha pakuputirwa nemaburi nekuti mabhare emhangura nezvinhu zve dielectric zvinokura zvakasiyana panguva yekupisa, kusungirirwa uye kushanda. Kana kusawirirana kuri kukuru, mabhare anogona kutsemuka, mapedhi anogona kusimudzwa, kana kuvimbika kwemadziro emaburi kunogona kutadza.

Mabhodhi ane mafrequency akakwirira anowanzo shandisa ma-via akawanda: ma-via ekusona pasi padivi pema-waveguides e-coplanar, kuburikidza nefenzi dzakatenderedza mafirita, ma-via ekumisa pasi pedyo nema-component pads, kuchinja pakati pe-stripline ne-microstrip layers, uye ma-via ekupisa pasi pemidziyo yemagetsi; izvi zvinokurukurwa zvakadzama mugwaro reRogers TMM microwave PCB. Mumagadzirirwo iwayo, kuvimbika kwemaburi akaputirwa hakusi chinhu chechipiri. Icho chikamu cheRF performance uye kuvimbika kwechigadzirwa kwenguva refu.

Rogers TMM Zvinhu Zvakasiyana-siyana uye Zvimiro Zvikuru

Mhuri yeTMM ine magiredhi akati wandei ane ma constants akasiyana e dielectric. Chikanganiso chinowanzoitika ndechekusarudza giredhi chete nekufananidza nhamba yeDk kubva padhizaini yekare. Nzira iri nani ndeyekuenzanisa maitiro eDk, dhizaini yeDk, kurasikirwa kwetanjenti, thermal coefficient ye dielectric constant, thermal conductivity, CTE, thickness availability uye zvinodiwa pakugadzira pamwe chete.

Tafura iri pazasi inotsanangura muchidimbu magiredhi makuru eRogers TMM anoshandiswa pabasa rePCB rine frequency yakakwira. Makoshero ndiwo mareferensi akajairika uye anofanirwa kusimbiswa zvichienderana nedhatabhesi reRogers razvino, kuwanikwa kwelaminate chaiyo uye stock yezvinhu zveTMM zvemugadziri zvisati zvaburitswa kuti zvigadzirwe.

Maitiro Dr vs dhizaini Dr

Zvinhu zveRogers TMM zvinonyora maitiro aDk uye dhizaini yaDk. Maitiro aDk ndiwo kukosha kunoshandiswa pakudzora zvinhu uye kukwidziridzwa pasi penzira yakatarwa yekuyedza. Dhizaini yaDk yakagadzirirwa kutevedzera macircuit pamusoro pehuwandu hwemafrequency akakwira uye kazhinji ndiyo inonyanya kukosha pakugadzira microstrip kana stripline. Kuvhiringidza manhamba maviri aya kunogona kugadzira bhodhi rinoita serakarurama mumagwaro asi rinoyera chinangwa chisina kujeka mushure mekugadzirwa.

Semuenzaniso, kana mainjiniya akagadzira mutsetse weTMM10 microstrip achishandisa maitiro eDk ye9.20 kana dhizaini Dk iri pedyo ne9.80 yechimiro chakakodzera, impedance yakaverengerwa uye kureba kwemagetsi zvinogona kuchinja. Musiyano unogona kuve wakakosha zvakanyanya mumaseketi e resonant, ma network anoenderana nephase uye mmWave structures. Nzira yakanakisa ndeyekushandisa dhizaini Dk mu field solver kana electromagnetic model, wobva waongorora stackup yekupedzisira nedata remugadziri wePCB ne laminate supplier.

Kushivirira kwaDk uye kudzokorora kwekugadzirwa

Kushivirira kweDk hakusi kungotaura nezvekutenga chete; kunokanganisa kuti mabhodhi ekugadzira akasiyana sei kubva kune mumwe nemumwe, kunyanya mumagadzirirwo anoenderana nekupisa uko kugadzikana kweDk pamusoro pekupisa kunofanira kuiswa mubhajeti rekutsungirira. Muenzaniso mumwe chete unogona kugadziriswa nekuchekerera kana nekushandura kukosha kwechikamu. Kufamba kwemabhodhi eRF kunofanirwa kudzokororwa mumapaneru, maroti uye magadzirirwo emusangano. Rogers TMM's controlled dielectric range inobatsira kuderedza frequency drift yeyuniti-ku-yuniti, asi kudzokorora kwekupedzisira kuchiri kutsamira pakukora kwelaminate, ukobvu hwemhangura, etch compensation, solder mask decisions, press process uye measurement discipline.

Kune mafirita e-high-Q, ma network ekudya ane phased-array, ma microwave sensors uye radar front ends, bhajeti rekutsungirira rinofanira kusanganisira dielectric tolerance, copper etch tolerance, registration, via position, finish thickness uye assembly parasites. Kusarudza zvinhu ndiko kutanga, kwete mhinduro yakazara.

Maitiro aDk, Df uye Ukobvu paPCB Performance

Kudzora nguva dzose kwe dielectric impedance uye saizi yemuviri

Dielectric constant ndiyo inosarudza kuti minda yemagetsi inofamba sei mukati nekutenderedza PCB dielectric. Mu microstrip, chikamu chemunda chiri mu laminate uye chikamu chiri mumhepo, saka circuit inoona dielectric constant inoshanda. Mu stripline, munda wakawanda uri mukati me dielectric, saka hukama ne laminate Dk hwakasiyana. Chero nzira, Dk inokanganisa zvakanyanya impedance, phase velocity uye wavelength.

Dhigirii repamusoro rinoita kuti wavelength ipfupike. Izvi zvinobvumira ma resonator madiki, zvikamu zvipfupi zvema quarter-wave uye mafirita akamanikana. Kazhinji zvinoita kuti upamhi hwetrace huve hutete kune impedance yakatarwa uye ukobvu hwe dielectric. Mitsetse yakamanikana inogona kuwedzera kurasikirwa kwe conductor uye kuita kuti etch tolerance ive yakakosha. Dhigirii repamusoro rinopa trace yakakura uye rinogona kutsigira bandwidth yakakura, asi rinoda nzvimbo yakawanda yebhodhi ye resonant structures. Dhigirii repamusoro saka isarudzo ye circuit-level pane sarudzo iri nyore yekuti "yakakwirira iri nani" kana kuti "yakaderera iri nani", uye inofanira kuongororwa kubva ku impedance, kurasikirwa, saizi yebhodhi uye mutengo we TMM PCB unotarisirwa.

Chinhu chinoparadza chinokonzera kurasikirwa kwe dielectric

Chinhu chinopa simba rekubvisa mwenje, chinonziwo loss tangent kana kuti Df, chinotsanangura kuti dielectric inonwisa simba reRF uye inoshandura sei kuita kupisa. Rogers TMM grades dzine Df yakaderera kubva pa0.0019 kusvika 0.0023 pa10 GHz. Izvi zvakakodzera kuma microwave boards mazhinji, kunyanya kana zvichienzaniswa neFR4 inoshandiswa zvakanyanya. Zvisinei, haisi nguva dzose yakaderera pane zvinhu zvakanakisisa zvePTFE. PTFE laminate inorasikirwa zvishoma inogona kuramba ichikunda kana dhizaini yese ichidzorwa nezvinodiwa zveinsertion-loss.

MuPCB chaiyo, kurasikirwa kwekuisa ihuwandu hwemigumisiro yakawanda. Kurasikirwa kweDielectric chikamu chimwe chete. Kurasikirwa kweconductor, kushata kwemhangura, kupera kwepamusoro, mwaranzi, kubuda kwemhepo kuburikidza nekusaenderera mberi, kuburikidza nekuchinja uye kuvhurwa kweconnector zvese zvinogona kutonga pahuwandu hwakawanda. Rogers TMM PCB inogona kuramba ichishanda zvisina kunaka kana sarudzo dzekugadzira dzisiri dzakanangana neRF design; chinyorwa cheRogers TMM microwave PCB chinotaura zvakadzama nezvebhajeti rekuisa-kurasikirwa.

Ukobvu hunokanganisa impedance, coupling uye kurasikirwa

Ukobvu hweLaminate ndeimwe yemhando dzinonyanya kukosha dzePCB ine frequency yakakwira. Kune chinangwa che impedance, dielectric yakakora inowanzoda trace yakakura, nepo dielectric yakatetepa ichida trace yakatetepa. Traces dzakakura dzinogona kuderedza kurasikirwa kwe conductor uye dzinogona kuve nyore kucheka nguva dzose, asi dzinoshandisawo nzvimbo yakawanda uye dzinogona kuwedzera coupling kune zvivakwa zviri pedyo. Dielectric dzakatetepa dzinotsigira compact routing uye coupling yakasimba asi dzinogona kuita kuti impedance ive nyore kubatwa ne etch variation.

Pabasa reRF rinodzorwa-impedance, dhizaini yePCB inofanira kuratidza ukobvu hwe dielectric pakati pezvikamu zvemhangura, kwete chete ukobvu hwebhodhi rakapedzwa. Mugadziri anofanira kusimbisa kana ukobvu hwacho huri chinhu chikuru, prepreg/bondply, kana kuti kukosha kwacho kwakasimbiswa mushure mekunamirwa. Mumabhodhi ehybrid multilayer, musiyano uyu unokosha nekuti zvinhu zvakasiyana zvinodzvinyirirwa zvakasiyana uye zvinogona kunge zvine hunhu hwakasiyana hwe dielectric.

Maitiro ekupisa akakosha mumagetsi eRF circuits

Mabhodhi ane mafrequency akakwirira haasi mabhodhi ane simba shoma nguva dzose. Ma amplifiers emagetsi, ma transmit modules, ma radar boards uye antenna feed networks zvinogona kuburitsa kupisa kwakawanda. Zvinhu zveRogers TMM zvinopa thermal conductivity inosvika 0.70 kusvika 0.76 W/m·K zvichienderana negiredhi, izvo zvinobatsira zvichienzaniswa nema dielectrics mazhinji echinyakare asingadhuri. Kunyange zvakadaro, kupisa kunofanirwa kutarisirwa nechimiro chebhodhi chakakwana: nzvimbo ye copper plane, kuburikidza ne arrays, simbi-backed structures, component attachment method, enclosure contact, solder void control uye airflow.

Dhizaini yekupisa uye dhizaini yeRF zvinofanirwa kuongororwa pamwe chete. Kuwedzera ma "thermal vias" kunogona kuvandudza kupararira kwekupisa asi kunogona kukanganisa simba repasi kana kugadzira kubatana kusingadiwe kana kusina kuiswa zvakanaka. Kuwedzera nzvimbo yemhangura kunogona kubatsira kupisa asi kunogonawo kushandura impedance kana maitiro ekutenderera. Dhizaini yakanaka yeRogers TMM PCB inoenzanisa kuenderera mberi kweRF, kufambisa kupisa uye kugona kugadzirwa panzvimbo pekugadzirisa imwe neimwe yoga.

Maitiro Ekusarudza Giredhi Rakakodzera reRogers TMM

Shandisa TMM3 kana maDk akaderera uye maRF traces akafara zvichibatsira

TMM3 inowanzo tariswa kana dhizaini yacho ichida kurasikirwa kushoma, kudzora Dk uye saizi yakakura yekutumira, senge antenna feed lines yakafara kana broadband RF routing. Nekushanda kweDk ye3.27 uye dhizaini Dk inosvika 3.45, inobatsira kune antenna feeds, broadband RF lines, couplers uye microwave circuits uko kukwirira kwakawanda kwaizoita kuti ma traces ave matete kana bandwidth ive shoma. TMM3 inogonawo kukwezva pakutsiva zvinhu zveDk PTFE zviri pasi asi ichitsvaga kuomarara kuri nani kwemechanical. Kune nhengo yemhuri yeDk iri pasi, zvinodiwa zvebhodhi reTMM3 RF zvinoshandura kusarudzwa kwemagiredhi kuita kuvakwa kwebhodhi rakati.

Nzvimbo yekutsinhana ndeyenzvimbo yebhodhi. Chimiro cheTMM3 quarter-wave chichava chakakura kupfuura chimiro chimwe chete paTMM6, TMM10 kana TMM13i. Kana saizi yechigadzirwa isiriyo chinodzivirira, geometry yakakura iyoyo inogona kubatsira nekuti inoderedza kunzwisisika kwekucheka uye inobvumira shanduko dzakachena. Kana kuomesesa kwakakosha, giredhi repamusoro reTMM rinogona kunge rakakodzera.

Shandisa TMM4 kana TMM6 pakuyera saizi uye kugona kugadzirwa kwezvinhu

TMM4 neTMM6 zviri pakati pemhuri. Zvinoderedza saizi yedunhu zvichienzaniswa neTMM3 ukuwo zvichidzivirira maitiro eTMM10 neTMM13i epamusoro-soro. Magiredhi aya anogona kukodzera network dzeRF dzakasimba, magadzirirwo efrequency-selective, macircuits anoenderana uye magadzirirwo uko hupamhi hwetrace, mipata yekubatanidza uye kushivirira kuchiri kudiwa kuti zvirambe zvichigadzirwa.

Kune akawanda magadzirirwo, TMM6 inzvimbo yepakati inoshanda. Inopa kudzikiswa kwakasimba kwehukuru kupfuura TMM4 asi haisundire marongerwo kuita muchimiro chimwe chete cheTMM10 kana TMM13i. Sarudzo chaiyo inofanira kusimbiswa nekushandisa impedance calculator, 2D field solver kana full-wave EM model, nekuti upamhi hwetrace hwaunoda uye nzvimbo inogona kunge iriyo inosarudza pane kwete nominal Dk chete; mushure meizvozvo, stackup inofanira kuongororwa nemugadziri wePCB anokwanisa TMM.

Shandisa TMM10, TMM10i kana TMM13i pamaseketi madiki ane Dk yakawanda

TMM10, TMM10i uye TMM13i zvinosarudzwa kana paine chinhu chakanyanya kudiwa chekugadzirisa magetsi kuti kuderedze saizi chaiyo kana kuti kuwana nzvimbo chaiyo yekugovera magetsi. Magiredhi aya anowanzo shandiswa mumafirita madiki, ma resonator, ma microwave modules ane density yakakura uye mashandisirwo ayo ceramic substrates dzingango fungidzirwa. Kana giredhi repamusoro-Dk rakasarudzwa, kugadzirwa kweTMM10 kwe compact RF geometry kunounza saizi ye resonator uye kunzwisisika kwekugadzira muongororo.

Dhizaini yeHigh-Dk inoda kungwarira. Kubatana kwakafanana kunoita kuti marongero acho ave akanaka kunogonawo kuwedzera kunzwa kwekuchinja kudiki. Maburi ekubatanidza anova akakosha, mhedzisiro yemamasiki esolder inogona kuoneka zvakanyanya, uye simbi iri pedyo inogona kuva nesimba rakasimba. Kune mabhodhi eHigh-Dk Rogers TMM, dhizaini yacho inofanira kuongororwa nepfungwa yekugona kwekupedzisira kugadzira: kushoma kwekutsvaga nenzvimbo, kushivirira etch, kunyoresa, clearance yekuboorera kusvika kumhangura, uye ukobvu hwepamusoro pekupedzisira zvinofanira kusimbiswa usati waburitsa marongero.

Funga nezve TMM10i ne TMM13i kana maitiro e isotropic achikosha

"I" muTMM10i neTMM13i inoratidza maitiro e-isotropic. Maitiro e-isotropic dielectric anogona kuva akakosha kana kurongeka kwemagetsi kuchichinja kana kuti dhizaini inoenderana nemaitiro anofungidzirwa muma-axes akawanda. Kune ma microwave modules akaomarara, ma resonators, zvivakwa zvakaiswa mukati kana shanduko, izvi zvinogona kuderedza kusava nechokwadi kwemodeling zvichienzaniswa nezvinhu zvine simba rekuvimba negwara.

Nzira iri nyore yekusarudza mamakisi

Maitiro ekusarudza anoshanda anotanga nebasa reRF kwete nerondedzero yezvinhu. Chekutanga, sarudza chinangwa chekupindira, maitikiro ekushanda, bandwidth uye kurasikirwa kunobvumidzwa kwekuisa. Chechipiri, fungidzira saizi chaiyo inodiwa nezvinhu zveDk zvakaderera, zvepakati nepamusoro. Chechitatu, tarisa kana upamhi hwetrace, mipata, kuburikidza nekubviswa kwezvinhu uye zvinhu zvemhangura zvichigona kugadzirwa. Chechina, enzanisa bhajeti rekurasikirwa, zvinodiwa pakupisa uye mutengo. Chekupedzisira, gadzira prototype yekutanga nema coupon structures kuitira kuti kupidigura nekurasikirwa zvikwanise kuyerwa pachinzvimbo chekufungidzira.

Kana magiredhi maviri eTMM achiratidzika kunge anoshanda nemagetsi, sarudza iyo inopa mukana wakasimba wekugadzira. Chinhu chinoburitsa madonhwe akamanikana kana mipata yakakosha chinogona kutaridzika zvakanaka mukuenzanisa asi chinodhura kana kusagadzikana mukugadzirwa. Kune akawanda mabhodhi eRF ekutengeserana, kugona kugadzira kwakakosha sekushanda kwemagetsi.

Dhizaini yeStackup yeRogers TMM High-Frequency PCB

Mabhodhi eRF ane mativi maviri uye ane mativi maviri

Rogers TMM PCB iri nyore ibhodhi rine mativi maviri rine maRF traces kune rumwe rutivi uye ground plane inoenderera mberi kune rumwe, chimiro chinowanzoshandiswa muRogers TMM RF PCB layouts. Chimiro ichi chinowanzo shandiswa muma microstrip circuits, antenna feeds, filters uye evaluation boards. Zvakanakira zvacho ndezvekusvikika, mutengo wakaderera, kuongorora zviri nyore uye lamination variables shoma. Zvipingamupinyi zvayo zvinosanganisira mwaranzi, kusvibiswa kweRF lines munzvimbo, uye kudzikira kwekuparadzaniswa zvichienzaniswa ne stripline.

Kune mabhodhi eRF ane mativi maviri, nzvimbo yepasi inofanira kuramba ichienderera mberi pasi pemitsara inodzorwa-impedance. Dzivisa kutenderera mitsetse yedhijitari, kupatsanurwa kwemagetsi kana ma antipads makuru zvakananga pasi penzira dzinonzwa dzeRF. Ma via epasi anofanira kuiswa pedyo nekuchinja, zvinobatanidza, nzvimbo dzezvikamu uye mipendero ye coplanar waveguide. Kana bhodhi riine maburi ekukwirisa, nhoo kana dzimba dzesimbi, kukanganisa kwadzo paminda yeRF kunofanira kufungwa nezvazvo nekukurumidza.

Microstrip, gwara remafungu ecoplanar rakadzika pasi uye stripline

Microstrip inoshandiswa zvakanyanya nekuti iri nyore uye iri nyore kugadzirisa. Inobvumira zvikamu kuti zviiswe zvakananga padivi rimwe chete neRF trace, asi inogona kupenya kupfuura zvivakwa zvakavigwa uye inogona kunzwa mask yekusolder, kukwirira kwenzvimbo uye simbi iri pedyo. Grounded coplanar waveguide inowedzera mhangura yakakuyiwa padivi peRF trace uye inoshandisa nekusona kubatanidza nzvimbo idzodzo kune reference plane. Izvi zvinogona kuvandudza kupatsanurwa uye kuita kuti kuchinja kuve nyore, asi zvinoda kudzora nekungwarira upamhi hwetrace, gap uye via spacing.

Stripline inoisa chiratidzo pakati pemareferensi. Inopa dziviriro iri nani uye inoparadzanisa, izvo zvinobatsira mumamodules e microwave akakora kana mabhodhi ane nzira dzinogamuchira dzinonzwisisika. Zvinobatsira ndezvekuoma kwekugadzira, kuoma kwekugadzirisa, uye kuvimba kwakasimba nekutonga kwehukobvu hwe lamination. Kana dunhu rikashandisa stripline, stackup inofanira kutsanangura ukobvu hwepakati nebonding layer zvakajeka, uye mugadziri anofanira kusimbisa ukobvu hwekupedzisira hwakadzvanywa usati wavhara impedance modeling.

Matanda emhando dzakasiyana-siyana ehybrid

Muchina wehybrid stackup unoshandisa Rogers TMM chete kana paine mashandiro epamusoro-soro uye unoshandisa chimwe chinhu, kazhinji FR4 kana Rogers laminate yakasiyana, yedhijitari, yekudzora kana yemagetsi. Nzira iyi inogona kuderedza mutengo uye kuchengetedza ukobvu hwebhodhi huchishanda. Inogonawo kubvumira maRF circuits pane imwe TMM layer yekunze ukuwo nzira yedhijitari, kugoverwa kwesimba uye rutsigiro rwemakanika zvichiiswa kune imwe nzvimbo.

Kugadzirwa kwehybrid kunofanirwa kugadzirwa nemazvo. Zvinhu zvakasiyana zvine CTE yakasiyana, hunhu hwehunyoro, tembiricha yelamination uye hunhu hwe dielectric. Stackup inofanira kunge yakaenzana kana zvichibvira kuderedza bow and twist. Sarudzo yeBondply inofanirwa kuenderana nezvinhu zvese uye nedanho relamination rinodiwa. RF modhi inofanira kusanganisira dielectric chaiyo iri padyo netrace, kwete chinhu chakayerwa chinonyangarika mushure mekugadzirwa.

Mapurani ekutarisa uye kudzoka kwazvino

Nzira yega yega yekufambisa ma frequency inoda nzira inodzorwa yekudzosa magetsi. PaRF ne microwave frequency, kudzoka kwemagetsi kunotevera nzira ye inductance yakaderera, kazhinji zvakananga pasi kana padivi pe signal conductor. Kupatsanuka kweplane, ma voids, ma antipads makuru, kuburikidza nemaburi uye shanduko dzisina kuiswa zvakanaka zvinokanganisa nzira iyi yemagetsi. Mugumisiro unogona kuva kukundikana kwe impedance, kurasikirwa kwakanyanya, radiation, crosstalk kana resonance isingatarisirwi.

Kune maPCB eRogers TMM ane frequency yakakwira, dhizaini yacho inofanira kuchengetedza RF reference plane inoenderera mberi pasi pemitsetse yekutumira. Kana chiratidzo chikachinja ma layers, isa ma ground vias pedyo ne transition kuitira kuti return current igone kuchinjawo ma layers. Paunenge uchishandisa grounded coplanar waveguide, chengeta nepafenzi pedyo zvakakwana kuti uite seRF boundary pa operating frequency, asi kwete pedyo zvakanyanya zvekuti njodzi yekugadzira kana capacitance yakawandisa inova dambudziko.

Sarudzo dzemasiki eSolder

Magadzirirwo mazhinji eRF haashandise mask yekusolder pamusoro pemitsetse inodzorwa-impedance nekuti mask yekusolder inoshandura mamiriro e dielectric anoshanda uye inogona kuwedzera kurasikirwa kana shift impedance. Mamwe magadzirirwo achiri kushandisa mask yekusolder kudzora kuunganidza, kudzivirira ngura kana kugadzirwa. Chinhu chikuru ndechekusatora mask yekusolder seisingaonekwe. Kana mask yekusolder ichivhara maRF traces, isanganise mu impedance model kana kuvaka ma test coupons anoratidza kupedzisa chaiko.

Kune ma microwave circuits anonyanya kugadzikana, taura kuti "hapana mask yekusolder paRF traces" kana kuti tsanangura maburi chaiwo ema mask muzvinyorwa zvekugadzira. Kune ma mixed boards, solder mask inogona kuramba iri panzvimbo dzedhijitari nedzemagetsi ukuwo zvikamu zveRF zvichivhurwa zviri nyore. Sarudzo yekupedzisira inofanira kufunga nezvekukosha kwekuunganidza, kuchena, njodzi yekuoxidation uye mashandiro eRF pamwe chete.

Kudzora Kurasikirwa Nekuiswa: Mhangura, Kupera uye Geometry

Kurasikirwa neDielectric hakusi iko chete kurasikirwa

Chikanganiso chinowanzoitika ndechekuenzanisa zvinhu zvePCB zvine frequency yakakwira chete neDf. Df inokosha, asi kurasikirwa kwemuchina kunogona kukosha zvakaenzana kana kutove kwakakura, kunyanya kana frequency ichikwira. Pama microwave nemmWave frequency, magetsi anoyerera pedyo nepamusoro pemhangura nekuda kweganda. Mhangura yakaoma inowedzera nzira inoshanda yemagetsi uye inogona kuwedzera kurasikirwa kwekuisa. Izvi zvinoreva kuti Rogers TMM laminate imwecheteyo inogona kukonzera kurasikirwa kwakasiyana kwakayerwa zvichienderana nerudzi rwe copper foil uye kurapwa kwenzvimbo.

Kana kurasikirwa kwakakosha, bvunza mugadziri wePCB kuti ndeipi foil yemhangura iripo yemhando yeTMM yakasarudzwa uye ukobvu hwayo. Sarudzo dzemhangura dzakaiswa nemagetsi, mhangura yakamonerwa uye mhangura isina kusimba dzinogona kuva nekuoma kwakasiyana, kunamira uye mutengo. Sarudzo yakanakisisa inoenderana nehuwandu, hunyanzvi hwekutevera, simba rekubvisa mavanga uye kugona kugadzira.

Kusarudzwa kwepamusoro pekupedzisira

Kupera kwepamusoro kunodzivirira mhangura yakavhurika uye kunotsigira kusungirirwa kwesimbi kana waya. Kune maRF circuits, kupera kunogonawo kukanganisa kurasikirwa, impedance uye kunaka kwekubatana. ENIG yakajairika uye inochinjika, asi nickel inorasikirwa zvakanyanya kana ikanyanya kukwira uye inogona kusadiwa munzvimbo dzekuvhurwa kweRF kana maRF traces akavhurika kwenguva refu. Sirivha yekunyudza, tin yekunyudza, OSP, goridhe rakapfava kana ENEPIG zvinogona kufungwa zvichienderana nenzira yekuungana, nguva yesherufu, zvinodiwa zvekubatanidza waya uye kusvibiswa kwezvakatipoteredza.

Hapana magumo akaenzana eRogers TMM PCB yega yega, saka magumo acho anofanira kusarudzwa neRF loss, solderability, storage, bonding uye window yeTMM process yakaratidzwa nemugadziri. Microwave module ine waya ingangoda magumo anoenderana nebonding yakavimbika. Bhodhi rekuyedza reRF rakabatana rinogona kukosheswa ne low contact resistance uye repeatable launches. Bhodhi rekugadzira rine solder rinogona kukosheswa ne assembly good uye storage stability. Kupedzisa kunofanirwa kusarudzwa neRF ne assembly requirements mupfungwa.

Kutanga uye kuchinja kweconnector

Kunyangwe tambo yekutumira yeTMM yakagadzirwa zvakanaka inogona kutadza kushanda kana connector launch isina kunaka, ndosaka connector transitions ichionekwa sechikamu cheRF PCB layout, kwete chete mechanical hardware. SMA, 2.92 mm, 2.4 mm uye board-edge launch zvinoda controlled pad geometry, ground via placement, reference-plane clearance uye mechanical alignment. Launch inofanira kutevedzera kana kukopwa kubva padhizaini yakaratidzwa kuti iite board thickness chaiyo uye connector type.

Kuchinja kwezvikamu chimwe chinhu chinowanzo konzera kurasikirwa nekufungisisa. Kuchinja kubva pa microstrip kuenda ku stripline, semuenzaniso, kunosanganisira via inductance, pad capacitance, antipad geometry uye return-path vias. Kune ma microwave frequency akaderera, via inodzorwa zvakanaka inogona kugamuchirwa. Pama frequency akakwira, kuchinja kunogona kuda backdrilling, stub length yakaderera, optimized antipads kana coaxial via structure.

Kushivirira matombo uye kudzora upamhi hwemitsara

Kudzorwa kweimpedance kunoenderana nehupamhi hwekupedzisira hwemhangura yakachekwa, kwete hupamhi hweCAD chete. Ukobvu hwemhangura, kubhadharwa kwe etch, kurongeka kwetrace, nzvimbo yepaneru uye maitiro ekugadzira zvese zvinokanganisa hupamhi hwekupedzisira. Izvi zvakakosha zvikuru kune zvinhu zve high-Dk TMM uko mutsetse we 50-ohm ungave wakamanikana. Kusiyana kwema microns mashoma kunogona kuva nemhedzisiro inoyerwa.

Dhirowa yekugadzira inofanira kusanganisira chinangwa chekupindira, kushivirira, referensi yezvikamu, zvinodiwa zvemakuponi ekuyedza uye kana impedance yakagadzirwa isati yaiswa/yapera kana kuti yapera. Kana dhizaini yacho iine RF structures dzakagadziriswa kwete chete tambo dzekutumira, sanganisira zviyero zvakakosha zvakasiyana uye kurukura kana zvichidzorwa ne impedance testing, dimensional inspection kana RF testing.

Zvaunofanira Kufunga Nezvekugadzira Rogers TMM PCB

Kuboorera uye kushandiswa kwezvishandiso

Magirazi eRogers TMM ane ceramic filler, saka chikamu chekugadzira chepurojekiti yeTMM chinofanira kubatwa zvakasiyana nebasa reFR4. Izvi zvinovandudza maitiro emagetsi nekupisa, asi zvinoitawo kuti kuchera kuve kwakaoma kupfuura FR4 yekuboora. Ceramic filler inogona kuwedzera kupfeka kwezvishandiso, saka ma parameter ekuboora, kuwanda kwezvishandiso, kusarudzwa kwezvishandiso uye zvinhu zvekupinda/kuchengetedza zvinofanirwa kudzorwa. Kuboora kusina kunaka kunogona kukonzera madziro emakomba akaomarara, kukwenya mapanga enziyo, smear, burrs kana zvikanganiso zveplating.

Mugadziri wezvinhu ane ruzivo neTMM achagadzirisa mamiriro ekuboorwa kwegomba zvichienderana nemhando yemakomba uye hupenyu hwematurusi; ichi ndicho chimwe chezvikonzero zvekusarudza chitoro chine ruzivo rwakanyorwa rweRogers TMM. Ma via madiki, akakora kuburikidza nefenzi uye maburi ane aspect-ratio akakwirira anofanira kuongororwa asati agadzirwa. Kana dhizaini ichida ma RF akawanda pasi, zviri nani kusimbisa dhayamita nepakati zvichienderana nekugona kweTMM kwemugadziri pachinzvimbo chekufungidzira kuti mitemo yekugadzira yeFR4 inoshanda.

Kuisa mapurasitiki nekugadzira maburi pamadziro

Imwe mukana weTMM kana tichienzanisa nema laminates akawanda ePTFE ndeyekuti TMM yakajairwa haidi sodium naphthenate treatment isati yaiswa electroless plating, izvo zvinogona kurerutsa maitiro emugadziri weRogers TMM PCB. Izvi zvinogona kurerutsa mashandiro uye kuderedza njodzi. Zvisinei, plating yakanaka inoramba ichienderana nekugadzirira pamusoro, desmear/cleaning chemistry, maburi-wall quality uye process control.

Kune mabhodhi akavimbika zvakanyanya, tsanangura ukobvu hwe copper plating hunodiwa, mwero wekugamuchira uye chero chinodiwa chekumanikidzwa kwekupisa. RF kuburikidza nefenzi uye pasi vias haisi maburi emakanika chete; inotakura magetsi ekudzoka uye inokanganisa dziviriro. Vias dzakatsemuka kana dzisina kuputirwa zvakanaka dzinogona kuva zvikanganiso zveRF zvinogara zvichiitika izvo zvakaoma kuona mushure mekuungana.

Kuronga nzira, kuyera uye mipendero yemakanika

Mabhodhi eRogers TMM angada mamiriro ekudzora nzira nekuti laminate yakazara neceramic inoita zvakasiyana neFR4. Kuburitswa kweconnector yebhodhi-edge, mipendero yakapfava, maficha emukati uye kushivirira kwakasimba kwemuchina zvinofanirwa kukurukurwa pakutanga. Kune mabhodhi eRF, mupendero unowanzo kuve chikamu che electrical interface: board-edge connectors dzinoda flatness, plating quality, ground continuity uye akarurama backback kubva kumucheto.

Kana PCB ikaiswa mudura resimbi, bhodhi rakarongwa uye nzvimbo dziri mumaburi ekuisa zvinogona kukanganisa RF grounding uye maitiro e cavity. Saka, kushivirira kwemuchina kunofanirwa kuongororwa neRF layout, kwete chete ne enclosure drawing.

Kugadzikana uye kunyoreswa kwehukuru hwenzvimbo

Maumbirwo eTMM ethermoset uye maitiro ekuwedzera kwekupisa anodzora anobatsira pakugadzikana kwezvikamu, asi kunyoreswa kwezvikamu zvakawanda kuchiri dambudziko rekugadzira kana dhizaini ichishandisa zvinhu zvakanaka, zvikamu zveRF zvakavigwa kana zvinhu zvakasanganiswa. Kune macircuits ane frequency yakakwira, kunyoreswa kunokanganisa kurongeka kwe via-to-pad, stripline centering, coupling gaps uye cavity structures. Marongerwo epaneru yekugadzira anofanirwa kusanganisira makuponi akakodzera uye zvinangwa zvekunyoresa.

Kana dunhu riine hunyanzvi hwakanyanya, funga nezvekukumbira kuyerwa kwechinhu chekutanga: ukobvu hwe dielectric, ukobvu hwe copper, data re impedance coupon, saizi dze critical feature uye, kana zvichibvira, kuyerwa kwe S-parameter yezvivakwa zvekuyedza. Izvi zvinopa mainjiniya nemugadziri hwaro hwechokwadi hwekugadzirisa chivakwa chinotevera.

Kuungana uye kubatana kwewaya

Zvinhu zveRogers TMM zvakavakirwa pasystem ye thermoset resin uye zvinoshandiswa mukugadzira zvingada waya yekubatanidza. Zvinodiwa pakusanganisa zvinofanirwa kutaurwa usati wagadzira nekuti zvine chekuita nekupedzisa kwepadenga, mask yekusolder, flatness, kuchena uye kurongedza. Kana bhodhi richizoshandisa bare die, chip-and-wire assembly kana eutectic attachment, PCB drawing inofanira kutsanangura nzvimbo dzinosungirirwa uye zvinodiwa pakupedzisa nemazvo.

Kune zvikamu zveRF zvakasungirirwa, geometry yevhu uye vhoriyamu yesolder inokosha. Kuisa solder yakawandisa kunogona kuchinja impedance pamapedhi, nepo kusakwana kwesolder kunogona kuderedza kuvimbika. Kune zvikamu zveRF zvine simba, mavoid ari pasi pemapedhi ekupisa anogona kuwedzera tembiricha uye kushanduka kwekushanda. Saka Rogers TMM PCB inofanira kuongororwa sechigadzirwa chakabatanidzwa chekugadzira nekugadzira kwete bhodhi risina chinhu chete.

Rogers TMM vs PTFE, RO4350B uye Alumina

Rogers TMM haisi nzira yezvinhu zvePCB yega yega ine mafrequency akakwira, saka inofanira kuenzaniswa nedzimwe RF laminates zvichibva pakurasikirwa, kuomarara, huwandu hweDk, njodzi yekugadzirisa uye zvinodiwa pakushandisa. Inobata nzvimbo chaiyo pakati pePTFE laminates dzinorasikirwa zvishoma, hydrocarbon/ceramic laminates dzinodhura zvishoma dzakadai seRO4350B, uye hard ceramic substrates dzakadai sealumina. Chinhu chakakodzera chinoenderana nekugadzirwa kwacho.

TMM vs PTFE

Ma PTFE laminates anogona kupa kurasikirwa kwakaderera pane TMM. Semuenzaniso, RT/duroid 5880 inozivikanwa neDk yakaderera uye dissipation factor yakaderera. Kana dhizaini iri nzira refu yekutumira inorasikirwa zvishoma uye kuomarara kwemuchina kwakaganhurirwa, PTFE inogona kunge iri sarudzo yemagetsi iri nani. Zvisinei, zvinhu zvakagadzirwa nePTFE zvinogona kuda kugadzirwa kwakanyatsogadzirwa uye zvinogona kunge zvisina kuomarara zvakanyanya. Rogers TMM inowanzo sarudzwa kana dhizaini ichida kuenzana kwakasimba kweRF performance, dimensional stability, plated-hole reliability uye manufacturability.

TMM vs RO4350B

RO4350B inoshandiswa zvakanyanya pamabhodhi eRF ekutengeserana nekuti inoshanda zvakafanana ne epoxy/girazi uye inodhura zvishoma. Isarudzo yakasimba yemaantenna, maRF modules, ma amplifiers emagetsi uye nharembozha uko bhajeti yekurasikirwa uye huwandu hweDk zvinoenderana. TMM inova inokwezva zvakanyanya kana dhizaini ichida kurasikirwa kwakaderera pane RO4350B, sarudzo yepamusoro yeDk, kudzora kwakasimba kwe dielectric kana chinhu chakasimba che thermoset chine seti chaiyo yeTMM.

TMM vs alumina

Alumina haisi PCB laminate yakajairika; ipurasitiki yeceramic. Inogona kuva yakanaka kwazvo kuma microwave modules anoshanda zvakanyanya, asi haina kusimba uye inoshandisa ecosystem yakasiyana yekugadzira nekubatanidza. High-Dk TMM grades inogona kutariswa kana dhizaini ichida imwe yehukuru hwema ceramic-like dielectric constants uku ichiramba iri pedyo nenzira dzekugadzira PCB. Izvi hazvirevi kuti TMM inotsiva alumina mune zvese zviitiko. Zvinoreva kuti TMM inofanira kuongororwa kana chigadzirwa chichida bvumirano pakati pe compact RF performance uye PCB-style manufacturability.

Kukwana Kwekugadzira uye Mashandisirwo Akajairika Ebhodhi

Masisitimu eantena uye network dzekudya

MaPCB eRogers TMM anoshandiswa muma antenna systems uko phase, impedance uye loss repeating zvakakosha. Feed networks dze arrays dzinofanira kuparadzira masaini ane amplitude uye phase inofungidzirwa. Kana dielectric variation ikachinja urefu hwemagetsi hweimwe nzira kana tichienzanisa neimwe, array performance inogona kutadza. TMM's controlled dielectric properties inobatsira kuchengetedza kudzokorora kwema boards.

Kune mabhodhi eantenna, sarudzo yezvinhu zvinoenderana nebandwidth, saizi yeantenna, kushanda zvakanaka kwemwaranzi, nharaunda uye mutengo. Magiredhi eLower-Dk TMM anogona kushandiswa kana bandwidth yakakura uye mitsetse yakafara ichidikanwa. Magiredhi eHigh-Dk anogona kutariswa kune zvivakwa zve antenna zvidiki, asi vagadziri vanofanira kufunga nezvekuchinjana kwebandwidth uye kushanda zvakanaka.

Mafirita eRF, macouplers uye ma resonators

Mafirita nema resonator ndezvimwe zvezvimiro zvePCB zvinonyanya kunzwisiswa neDk. Kuchinja kudiki mu dielectric constant kana trace dimension kunogona kufambisa passband, return loss kana coupling response. TMM inokosha nekuti inopa maDk values ​​anodzorwa mumagiredhi akati wandei, zvichibvumira mugadziri kusarudza saizi chaiyo uye kushivirira kunoenderana nerudzi rwefirita.

Pamaseketi aya, dhizaini yekugadzira inofanira kuratidza zviyero zvakakosha pane kubata zvinhu zvese zvemhangura zvakaenzana. Maburi ekubatanidza, kureba kwe resonator, maumbirwo ehairpin, minwe yepakati pedhijitari uye nzvimbo dzakavhurika zvinogona kuda kuongororwa kwakakosha. Mune zvimwe zviitiko, nzira yakanakisa yekugadzira ndeyekubatanidza makuponi e resonator kana kubvumira mashandiro ekugadzirisa akadzorwa mushure mekuyerwa kwekutanga.

Radar uye electronics dzemuchadenga

Radar nemagetsi emuchadenga zvinowanzo sanganisa mafrequency akawanda, kupisa, kudedera, zvinodiwa zvekuvimbika zvakanyanya uye hupenyu hurefu hwebasa. Chinhu chakasarudzwa chete kuti chirasikirwe nekurasikirwa kushoma chingasave chakakwana. Bhodhi rinodawo kuvimbika kwemaburi akaputirwa, kugadzikana kwehukuru uye kuenderana nezvinodiwa zvekubatanidza uye zvakatipoteredza.

Kuomarara kwethermoset kwaRogers TMM, maitiro ekuwedzera kupisa anodzorwa uye hunhu hwemagetsi hunowedzera frequency zvinoita kuti ive yakakodzera ma radar modules, ma sensor boards uye ma microwave assembly anovimbika zvikuru. Pabasa remuchadenga kana rekudzivirira, magwaro, kutevedza zvinhu, zvinodiwa pakuongorora uye zvinhu zvinotarisirwa pakutengeswa kwekunze zvinogonawo kudiwa panguva yekutenga.

Masisitimu esatellite nekutaurirana

Masisitimu ekutaurirana nesatellite uye ekutaurirana ne microwave anowanzo shandisa nzira dzeRF dzinodzorwa-impedance, zvikamu zvekugamuchira ruzha rushoma, ma amplifiers emagetsi, mafirita uye network dzakagadziriswa. Rogers TMM PCBs dzinogona kutsigira mabasa aya kana stackup yakagadzirirwa kurasikirwa kushoma uye chikamu chakagadzikana. Mumasisitimu ekutaurirana, kuvandudzwa kudiki kwekupinza-kurasikirwa kunogona kushandura kuita bhajeti iri nani rekubatanidza, kushushikana kushoma kweamplifier kana kunzwa kuri nani kwemugamuchiri.

Mabhodhi emagetsi eRF uye amplifier

Mabhodhi eRF emagetsi anoda mashandiro emagetsi nekupisa. Laminate inofanira kutsigira kugadzikana kwemhepo uye kurasikirwa kushoma ukuwo marongerwo acho achibvisa kupisa kubva mumidziyo inoshanda. Kufambiswa kwemhepo nekupisa kweTMM uye kuvimbika kwemaburi akaputirwa zvinogona kubatsira, asi dhizaini yekupisa yebhodhi inoramba yakakosha. Shandisa ma thermal vias, copper planes, heat spreaders uye housing contact nemaune, uye simbisa kuti zvivakwa zvekupisa hazvikanganisi RF return current.

Rondedzero yeRogers TMM PCB uye Rondedzero yeMagadzirirwo

Mutengo weRogers TMM PCB unonyatsojeka kana mugadziri akagamuchira pasuru yakazara yehunyanzvi; zvikasadaro mutengesi anogona kutora imwe mhando yechinhu, kufunga kuti nzira yakachengeteka asi inodhura zvakanyanya, kana kupotsa ruzivo rwakakosha rweRF runokanganisa mutengo weTMM PCB. Nekuti TMM ipurasitiki yepamusoro-soro, data risina kukwana rinogona kutungamira mukutsiviwa kwezvinhu zvisiri izvo, kufungidzira kusina kururama kwekuunganidzwa kwezvinhu, kuwedzera kwemitengo kunogona kudzivirirwa kana kunonoka kweprototype.

Ruzivo rwezvinhu uye zvinhu zvakaunganidzwa

• Chiyero chaicho cheRogers TMM: TMM3, TMM4, TMM6, TMM10, TMM10i kana TMM13i.
• Ukobvu hwe laminate hunodiwa uye huremu hwesimbi yemhangura.
• Kukora kwebhodhi kwapera uye kushivirira.
• Kuwanda kwezvikamu uye kuunganidzwa kwakazara, kusanganisira zvinhu zvinobatanidza muzvivakwa zvehybrid.
• Ndezvipi zvikamu zviri zvikamu zveRF zvinodzorwa-impedance.
• Kana chifukidzo chesolder chichibvumidzwa paRF traces.
• Chero chinodiwa chekuenzana kudzora uta nekumonereka, kunyanya muzvivakwa zvehybrid zvinosanganisa TMM nezvimwe zvinhu.

Zvinodiwa pakushanda kweRF

• Kupindirana kwechinangwa uye kushivirira kwemhando yega yega yeRF line.
• Mafambiro ekushanda uye kuti dhizaini yacho yakamanikana here kana kuti yakafara.
• Kurasikirwa kukuru kwekupinza, kurasikirwa kwekudzosa kana kushivirira kwechikamu kana zvichibvira.
• Zvinodiwa zvemakuponi pakuyera impedance, kurasikirwa kana S-parameter.
• Zviyero zvakakosha zveRF zvakaita semipata yekubatanidza, kureba kwe resonator uye geometry yekutanga.
• Rudzi rwechinobatanidza uye kurudziro yekuvhura kana zvibatanidza zvepamabhodhi zvichishandiswa.

Zvinodiwa zvekugadzira uye kuunganidza

• Nzvimbo shoma, chibooreso chidiki, chiyero cheaspect uye via type.
• Ukobvu hweplati, zvinodiwa kuburikidza nekuzadza uye zvinodiwa zvekuchera kumashure kana zviripo.
• Kupera kwepamusoro: ENIG, sirivha yekunyudza, OSP, goridhe rakapfava, ENEPIG kana zvimwe.
• Zvinodiwa zvekubatanidza waya, kubatanidza netambo kana kubatanidza kwakakosha.
• Zvinodiwa pakushandisa tembiricha: simbi inotsigirwa, mhangura inorema, thermal vias kana heat spreader contact.
• Mwero wekugamuchirwa, mushumo wekuongorora, chitupa chezvinhu uye zvinodiwa padata rebvunzo.

Mibvunzo yekubvunza mugadziri wePCB yako

Usati waburitsa PCB yeRogers TMM ine frequency yakakwira, bvunza mugadziri kana vakambogadzirisa giredhi chaiyo yeTMM uye ukobvu hwayo kare. Bvunza kuti ndeapi mafoil emhangura uye sarudzo dzekupedzisa dzavanogona kutsigira. Simbisa kuti vanotsungirira sei etch pakukora kwemhangura kwakasarudzwa. Bvunza kuti vachaedza sei controlled impedance uye kana chimiro che coupon chichienderana neRF line type. Kune ma hybrid boards, bvunza kana lamination stackup yakasimbiswa kuti ienderane ne bow, twist uye material.

Mibvunzo iyi inodzivirira dambudziko rinowanzoitika: dhizaini yakagadzirwa nemagetsi asi yakaoma kugadzira kakawanda. Mugadziri weTMM PCB ane hunyanzvi anofanira kukwanisa kukurukura nezvekuwanikwa kwelaminate, dzimwe nzira dzekugadzirisa zvinhu, ma drill parameters, surface finish exchange-offs uye impedance certification usati waisa odha. Kune mutengo wepamusoro weTMM, ipa giredhi chaiyo, stackup, operating band, saizi yebhodhi, copper, impedance targets uye huwandu. Izvozvo zvakakwana kuti ubve pakukurukurirana kwemhuri kuenda pakuongorora kwakanangana nekugadzirwa.