Ukukhiqizwa kwe-Cavity PCB Yemiklamo Yebhodi Eqondile

I-cavity PCB iyibhodi elakhiwe ngenhloso elinendawo egobile noma efakwe umshini endaweni—hhayi i-PCB ejwayelekile enembobo eyengeziwe. I-Highleap Electronics inikeza ukukhiqizwa kwe-cavity PCB yemiklamo edinga ukucaciswa kwezingxenye, ukujiya kwendawo okuncishisiwe, amaphakethe anezitebhisi noma i-geometry ye-cavity echaziwe. Uma umhlinzeki wakho wamanje engakwazi ukusekela ukujula kwe-cavity okudingekayo, imininingwane ye-stackup noma ye-mechanical, sithumelele iphakheji yokukhiqiza ukuze sibuyekeze ukukhiqizwa.

Ukuze uthole isilinganiso se-PCB se-cavity esenziwe ngokwezifiso esiwusizo , isibuyekezo sethu sobunjiniyela sidinga okungaphezu kohlaka lwe-Gerber. Ubukhulu be-cavity, ireferensi yokujula, izinto ezisele, i-geometry yodonga, ithusi eliseduze, ukwakhiwa kwe-laminate kanye nanoma yimuphi umsebenzi we-RF noma womshini konke kuthinta umzila wenqubo. Sibuyekeza lezi zidingo ngaphambi kwesilinganiso ukuze intengo kanye nengxoxo yesikhathi sokuhola kusekelwe ebhodini olidingayo ngempela.

Kuyini Ukukhiqiza i-Cavity PCB?

Qala kusukela ekuhlanganisweni okuvamile kwezingqimba eziningi bese ususa izinto ezingaphakathi, kungaba ngokugaya iphakethe ohlangothini olulodwa noma ngokusika umsele ebhodini nge-router, bese ubuyisela izikhumba phezu kwalokho okusele. Umphumela uba ibhodi elincane endaweni kunelinye iphaneli, noma elingenalutho endleleni echaziwe.

Okususiwe kubaluleke kakhulu njengokusele. Uma iphakethe ligaywa enkabeni kuphela futhi izikhumba ze-prepreg zihlala ziboshiwe phezulu, ithuluzi lokuqondisa lidlula enkabeni bese liyama, okugcina indawo yangaphandle eqhubekayo yezingxenye nezixhumi. Uma i-cavity ikhiqizwa ngaphandle kwephaneli eliqediwe, ithuluzi kufanele lingene ngesendlalelo sethusi ne-prepreg, yingakho umdwebo ngokuvamile kufanele usho ukuthi i-cavity ivulekile noma ivaliwe nokuthi yiziphi izendlalelo eziphela ngaphakathi kwayo.

Imiphumela emibili ilandela ngqo kulokhu. Okokuqala, noma yiluphi ungqimba oluphela ngaphakathi komgodi luyingqimba okumele ijikelezwe ephaketheni, ngakho-ke umsebenzi wobuciko kufanele ufake uhlaka lomgodi njengento yokugcina. Okwesibili, iphakethe eligayiwe lishiya imiphetho yethusi odongeni lwephakethe. Uma lolo donga lungaphakathi kwesifunda sendiza yomhlabathi, ithusi alisekho lapho, futhi umklamo kufanele ucabangele lona kunokuba uthathe indiza eqinile yokubhekisela.

Izinhlobo zama-Cavity PCB kanye Nezidingo Zawo Zokukhiqiza

Igama elithi “ibhodi lemigoqo” lihlanganisa izakhiwo eziningana ezihlukene. Azikwazi ukushintshaniswa, futhi ukucacisa okungalungile yisona sizathu esivame kakhulu sokuba isilinganiso semigoqo sibuye siphezulu kakhulu kunalokho obekulindelekile.

Isikhwama esingaboni kanye nesikhala esingenantambo ziziphatha ngendlela ehlukile kakhulu emsebenzini wobuciko. Isikhala esingenantambo sihlukanisa ibhodi ngezindawo okumele ziboshwe ndawonye ngomshini, ngokuvamile ngokushiya amabhuloho ezinto ezibonakalayo noma ngokuphinda kufakwe izikhumba eziqhubekayo. Leso yisinqumo sesakhiwo esinquma ukuthi ingxenye ingenzeka yini.

Izidingo Zomklamo we-Cavity PCB Wamandla Nokujula Kwebhodi

I-laminate ekwi-PCB iyinhlanganisela eqiniswe ngefayibha, futhi ukuqina kwayo kuvela ekuthungeni kwengilazi okuhamba phakathi kwengaphakathi. Ukuqondisa kususa lokho kuqinisa ohlangothini lokusikwa. Ibhodi elinomzila obanzi, ongaphazanyiswa kulo lingagobeka ngaphansi kwemithwalo yesinki yokushisa eboshwe noma amandla okufaka isixhumi, futhi endaweni enomswakama ingxenye encishisiwe nayo yenza buthaka isibopho phakathi kwezikhumba kanye nengaphakathi elisele.

Imikhuba emithathu ivamile kulokhu kwakhiwa, futhi yonke emithathu ifanele umdwebo kunokuba ibe ngokombono womenzi:

• Amabhuloho ezinto ezibonakalayo: imichilo yengaphakathi eshiywe endaweni yayo yonke indawo, ukuze ukusika kungasebenzi ububanzi obuphelele. Lena yindlela ejwayelekile yokugcina ibhodi lendawo lingaqhekeki libe yizicucu ezimbili.
• Izikhumba eziqhubekayo: izendlalelo zangaphandle ze-prepreg aziphazanyiswa, ngakho-ke ibhodi ligcina indawo egobile ngisho nalapho ingaphakathi lisusiwe khona. Lapho imbobo ivulekile nhlangothi zombili, kufanele kwengezwe isikhumba sangaphandle ngemuva kwalokho, okushintsha ukujiya ngaleso sikhathi.
• I-Corner radii: ikona elibukhali langaphakathi ephaketheni eliqondisiwe liyindawo yokucindezeleka kanye nendawo yokuqalisa yokuhlukanisa. Amanani erediyasi avame ukuvezwa emdwebeni njengerediyasi encane kunokuba kube ubukhulu obuqondile.

Ukuqina kungahlolwa ngaphambi kokwakhiwa. Uma ibhodi lakho linomgodi futhi lifaka ingxenye esindayo, chaza indlela yokufaka kanye ne-torque ye-fastener ku-RFQ, ngoba ukucindezeleka kwebhereyitha yendawo ezungeze imbobo yesikulufu kuvame ukuba yicala elikhawulelayo kunokuba kube ukuqina kwebhodi iyonke. Yilapho umdwebo womshini we-assembly, hhayi umsebenzi wobuciko we-PCB kuphela, unikeza umenzi lokho akudingayo. Isizathu esifanayo sisebenza emibuzweni ye-fastener kanye ne-torque ehlanganiswe ekhasini lethu le -PCB lokucatshangelwa komklamo wemishini.

Umklamo we-RF Cavity PCB wezindiza zomhlaba kanye neziyingi ze-High-frequency

I-RF yilapho ukwakhiwa kwe-cavity kuthola khona iningi lenani layo, futhi nalapho kudala khona ukwehluleka okucashile kakhulu. I-cavity egayiwe isusa ithusi ezingqimbeni zangaphakathi esifundeni se-pocket, okusho ukuthi i-reference plane ngaphansi kwaleyo ndawo iyaphazamiseka. Ku-cavity eyakha ingxenye ye-resonator, isihlungi, noma i-oscillator, lokho kuphazamiseka yikona okubalulekile: ubukhulu be-cavity bubeka imvamisa ye-resonant, kanti umngcele wensimbi uchaza imodi. Ku-cavity engahloselwe ukuzwakala , ukuphazamiseka okufanayo kusadinga umngcele ochaziwe, noma isakhiwo sizokhanya futhi sihlangane ngokungalindelekile.

Amapharamitha amathathu alawula umphumela, futhi wonke amathathu kufanele ashiwo:

• Ukujula komgodi, okuyi-dielectric ukuphakama kwevolumu ye-resonant. Ukubekezelelana komzila kanye nobukhulu besikhumba kokubili kudla lokhu, ngakho-ke ukubekezelelana ekujuleni kudinga ukuqina kunokumelana nobukhulu bebhodi langaphandle.
• Incazelo yomngcele wensimbi: ukuthi ngabe umgodi uchazwa udonga lwethusi olusele, ngesikhala esifakwe ipulasitiki, noma yingxenye yensimbi ehlukile ehlanganiswe ephaketheni. Lokhu akulingani ngokwemigomo ye-RF.
• Izinto ze-dielectric ngaphakathi kwesikhala: i-resin kanye ne-filler enkabeni ine-Dk ne-Df ehlukile ezikhumbeni ze-prepreg, ngakho-ke umgodi ohlanganisa zombili ungaguqula imvamisa ye-resonant uma kuqhathaniswa nokubalwa okusekelwe ezintweni ezilodwa.

Yingakho amabhodi omgodi avame ukucaciswa kanye nohlelo lwezinto ze-RF kune-FR-4 ejwayelekile. Isiqondiso sethu sokukhiqiza i-RF kanye ne-microwave PCB sichaza ukuthi ukukhetha kwe-stackup kanye nezinto ezibonakalayo kuhlangana kanjani ne-impedance, futhi imindeni yezinto ezibonakalayo ngokwayo iqhathaniswa ezintweni zethu ze-microwave PCB . Uma umklamo uyi-cavity resonator kunokuba yibhodi le-RF elijwayelekile, izinto ezibonakalayo kanye nokubekezelelana kwemgodi yizinto ezimbili okufanele kuvunyelwane ngazo nomenzi ngaphambi kokuba umsebenzi wobuciko ukhishwe.

Inqubo Yokukhiqiza Nokuhlola i-Cavity PCB

Ibhodi elingaphakathi aliyona indlela ejwayelekile yokwakha enesinyathelo esengeziwe. Indlela yokuqondisa kufanele ibekwe ngokuhambisana nezendlalelo esezivele ziboshiwe, futhi lokho kuvimbela ukulandelana konke.

Umphumela ongokoqobo ukuthi ukujula kwesikhala kuyisilinganiso esiqondisiwe esiphakathi kwezindawo ezimbili ezibekwe nge-laminate, futhi kulinganiswa ngemva kokufakwa kwe-plating nokuqeda. Uma umklamo udinga ukubekezelela ukujula okuqinile kunalokho okungabanjwa yi-routing ne-plating, impendulo ivame ukuba ukuhambisa isikhala sibe yingxenye yomshini kunokucela umenzi ukuthi asike kakhulu. Imibuzo yokubekezelela ukunqunywa iyingxenye yokulungiswa kwefayela ehlanganiswe enkambisweni yethu ye -PCB lamination.

I-Cavity PCB vs I-Substrate Ehlanganisiwe: Umehluko Obalulekile

Zombili lezi zindlela zibeka okuthile ebhodini, futhi zivame ukudideka esigabeni sokucaciswa. Ziyahluka kulokho okuqukethwe yibhodi nakulokho okumele kwenziwe ngumenzi wezinto.

Uma inhloso iwukubeka i-RF module noma isekethe encane ngaphakathi kwebhodi, umzila we-substrate ehlanganisiwe uvame ukuba ngolawulwa kakhulu, futhi uhlanganiswe ngokuningiliziwe ekwakhiweni kwe-PCB yethu ehlanganisiwe . Uma inhloso iwukudala ivolumu ye-RF noma ukuvala ingxenye ehlukanisiwe, ukwakhiwa kwe-cavity kuyithuluzi elifanele.

Iziqondiso Zokuklama I-Cavity PCB Zokubuyekezwa kwe-DFM

Lena imithetho evame ukuphoqa ukuthi kudwetshwe kabusha esikhundleni sokushintsha inqubo:

• Ibanga eliphakathi kodonga kuya kuthusi. Lapho udonga lwesikhwama luqeda i-via efakwe ipulasitiki noma i-plane, izinto ezisele ezihlanganisiwe kufanele zisinde emjikelezweni wesibili we-lamination. I-via eseduze kakhulu nomphetho wesikhwama izovezwa odongeni futhi ngeke imbozwe ngokufaka ipulasitiki ngendlela i-via evamile efakwa ngayo.
• Ukusekelwa ngaphansi kwephakethi. Uma iphakethe ligaywa ngaphakathi kwengaphakathi futhi iphansi lesikhala lingasekelwa endaweni ebanzi, lizowa noma liqhekeke ngesikhathi somjikelezo wesibili wokucindezela.
• Ukubhaliswa phakathi kwesinyathelo sokuqondisa kanye nomsebenzi wobuciko. Indawo ephaketheni kumele ixhunywe emsebenzini wobuciko ngenqubo yomenzi uqobo, futhi ukubekezelelana kufanele kushiwo maqondana nezici ezibalulekile, njenge-via array noma i-connector footprint.
• Ukufinyelela amathuluzi kanye nokufakwa kwamaphaneli. I-router kufanele ifinyelele ephaketheni. Iphakethe eliseduze nomphetho wephaneli, noma ibhodi okumele liqondiswe ngaphambi noma ngemva kokufakwa kwamaphaneli, lishintsha ukwakheka kwephaneli. Ukufakwa kwamaphaneli e-PCB ihlanganisa indlela amasu ephaneli athinta ngayo izinyathelo zomzila kanye nokuthi kufanele kubekwe kuphi izinto ezidingekayo.
• Ukuqina kwesikhumba. Uma izingxenye zihlala phezu kwesikhwama, indawo engaphezulu kufanele ihlale iqonde ngaphakathi kokubekezelelana kwengxenye, okukhawulela ukuthi isikhumba singaba sincane kangakanani nokuthi iphaneli ingahamba kangakanani phakathi kwemijikelezo.

Iningi lalezi yizinto ezivamile zokucatshangelwa kwe-DFM ezisetshenziswa ku-geometry engavamile. Ukubuyekezwa kwedizayini yethu ye-PCB yokwenziwa (i-DFM) kuhlanganisa isethi yemithetho ejwayelekile, futhi ukwakheka kwesikhala kufanelekile ukukusebenzisa ngokugcwele ngoba isinyathelo sokuqondisa sisebenzisana nemithetho eminingana evamile ngesikhathi esisodwa.

Izidingo Zesilinganiso Se-Cavity PCB: Ukujula, Usayizi kanye Nokubekezelelana

Iningi lezimanga ezibizayo ebhodini elingaphansi livela olwazini olungakaze lube semdwebweni. Uhlu olulandelayo luhlanganisa lokho umenzi wezinto akudingayo ukuze abeke intengo yesakhiwo ngaphandle kokuqagela:

• Ukufakwa endaweni evulekile. Amagama ezingqimba, izinto zokwakha, ithusi kanye nobukhulu be-prepreg, kanye nesitatimende esicacile sokuthi iphakethe ligaywa kusuka kuluphi ungqimba nokuthi lijula ​​kangakanani, kulinganiswa kusuka endaweni ekhonjisiwe eshiwo.
• Umbono wesigaba odlula emgodini. Lo mbono owodwa uxazulula ukungaqondakali okukhulu kunekhasi lamanothi. Kufanele ubonise phansi kwephakethe, izikhumba ezingaphezulu kwalo, nanoma yiliphi ithusi eliphela odongeni.
• Ukubekezelela ukujula komgodi, nokuthi ngabe kuyisidingo esihambisana nezinhlangothi zombili noma esihambisana nesibonakaliso esiphelele.
• Ukwelashwa kodonga. Kungakhathaliseki ukuthi udonga lwesikhwama lushiywe lungenalutho, lufakwe ipulasitiki, noma lumbozwe yingxenye ehlukile yensimbi. Lokhu kushintsha kokubili ukuziphatha kwe-RF kanye nokuvikelwa kokugqwala.
• Imininingwane yebhuloho kanye nokusekelwa, noma imvume ecacile yokuthi umenzi wezinto aziphakamise ngokusekelwe kumathuluzi akhe.
• Uhlelo lwezinto ezibonakalayo, ikakhulukazi uma umgodi uyingxenye yesakhiwo se-RF, lapho i-Dk ne-Df yomongo kanye ne-prepreg zombili zingena ekubalweni.
• Umthwalo wemishini. Uma noma iyiphi ingxenye ye-assembly ilayisha indawo ephaketheni, chaza i-torque ye-fastener kanye ne-load case.
• Imigomo yokwamukelwa. Ukuthi umgodi kumele ulinganiswe nani, nokuthi ngabe isheke lihlukaniswa ngokwezigaba, ngokulinganisa okuqondile, noma ngokuhlolwa kwe-RF ebhodini eliqediwe.

Imithethonqubo yemibhalo ye-stackup kanye nendlela okufanele ibhalwe ngayo ihlanganiswe ekwakhiweni kwethu kwe-PCB stackup , kanye nohlangothi lwe-laminate lombuzo ekubukeni kwethu kokwakhiwa kwe-laminate.

Umkhiqizi we-Cavity PCB wezinhlobo ze-Prototypes kanye nokukhiqizwa

I-Highleap ingasekela amaphrojekthi okwenziwa kwe-PCB yesikhala esenziwe ngokwezifiso lapho i-geometry yesikhala kanye nokuqoqwa kwezinto kungalinganiswa nomzila wokukhiqiza okuvunyelwene ngawo. Sibuyekeza ama-prototype e-PCB yesikhala kanye nemibuzo yokukhiqiza, kanye nobubanzi bokuhlola obudingekayo obuchazwe ngaphambi kokukhishwa. Inhloso ukuhlonza ubukhulu obubalulekile kanye nokuqagela kwenqubo kusenesikhathi—hhayi ukucaphuna umsebenzi ojwayelekile wesikhwama ongase ungahlangabezani nesidingo sebhodi eliqediwe.

Uma ucela isilinganiso sokukhiqiza i-PCB yesikhala , faka ubukhulu bebhodi eliqediwe, ubude nobubanzi besikhala, ukubekezelela ukujula, irediyasi yekhoneni, indawo yesikhala, izidingo zengqimba eveziwe kanye nobuningi. Kumiklamo ye-PCB yesikhala se-RF, khomba izindawo zokugcina phansi, umngcele wensimbi kanye nanoma yiziphi izidingo zokujula okulawulwayo noma zikagesi. Kuma-cavity okususa izingxenye, faka uhlaka lwengxenye kanye nomdwebo wokuhlanganiswa kwemishini.

I-Highleap ingabuyekeza futhi ukwakhiwa kwebhodi elibanzi ngezinsizakalo zethu zokwenziwa kwe-PCB , kuyilapho amaphrojekthi ahlanganisa izici ze-cavity nama-RF stackups adingayo angadinga nokubuyekezwa kwezinketho zethu zokukhiqiza ze-PCB ezivame kakhulu. Thumela amafayela akho ngesicelo sesilinganiso se-PCB bese ukhomba izici ze-cavity ezibalulekile ekusebenzeni.

• Iphakheji yesilinganiso: Amafayela e-Gerber noma e-ODB++, amafayela okubhoboza, ukuqoqa, umdwebo wesikhala esilinganiselwe, ukubekezelela ukujula, ubuningi kanye namarekhodi okuhlola adingekayo.

Imibuzo Evame Ukubuzwa Yokukhiqiza i-Cavity PCB

Ingabe ibhodi elingaphakathi lingahlanganiswa njengebhodi elivamile?

Yebo, uma izikhumba ezingaphezu kwesikhala ziqhubeka futhi ziyisicaba ngokwanele ukuze kuqhutshwe inqubo yokuhlanganisa. Uma isikhala sivulekile endaweni ephezulu, indawo idinga ukwesekwa ngomshini okuvela endaweni ebiyelwe noma isembozo esihlukile, futhi umdwebo wokuhlanganisa kufanele usho kanjalo. I-SMT ejwayelekile ilungile ezikhumbeni; isikhala esiphazamisa imingcele yobuso bethusi ephezulu lapho izingxenye zingafakwa khona.

Ingabe ukuqondisa umgodi kuthinta ukusebenza kukagesi kwezinye izendlalelo?

Ingakwazi. Ithusi elisikiwe odongeni lwesikhwama alisayona indlela yamandla eqhubekayo, futhi noma yisiphi isendlalelo esigijima ngaphezu noma ngaphansi kwesikhwama sibona indawo eshintshile ye-dielectric. Umthelela kagesi uncike ku-geometry yesendlalelo esithintekile, indlela yamandla okubuya, imvamisa yesignali kanye nomngcele wesikhala. I-RF kanye nemiklamo yesivinini esikhulu kufanele ihlole isikhala esikumodeli kagesi kunokucabanga ukuthi isici singesomshini kuphela.

Iyini ithonya elivamile lesikhathi sokuhola?

Ukwakhiwa kwesikhala kunezela umsebenzi wokuqondisa, umjikelezo wesibili we-lamination kanye nokuhlolwa okwengeziwe esigabeni ngasinye, ngakho-ke ngokuvamile kucashunwa njengokude kunebhodi elilinganayo elingenazo izikhala. Isikhathi esengeziwe sincike kakhulu enanini lemijikelezo ye-lamination kanye nokuhlelwa kwephaneli kunosayizi wephakethe. Uma ishejuli ilungisiwe, shono ku-RFQ, ngoba umzila wenqubo ngezinye izikhathi ungahlelwa nxazonke.

Ungakha ibhodi elinomgodi onezimbobo ezimboziwe noma ezingabonakali?

Yebo. Isithiyo ukuthi ama-via kufanele ahlale kude nodonga lwesikhwama ngebanga elanele ukuze ahlale efakwe futhi embozwe ngemva komjikelezo wesibili we-lamination, futhi noma iyiphi i-via ehloselwe ukuphela ngaphakathi kwesikhala kufanele ichazwe ngokucacile kunokuba ishiywe ukuze ichazwe.

Ukujula kwesikhala kuqinisekiswa kanjani?

Ngokulinganisa ibhodi eliqediwe, ngokuvamile ngokulinganisa phansi kwephakethe ngokuqhathanisa nobuso bereferensi, nangokusebenzisa isampula ngokuhlanganisa izingxenye. Uma ukubekezelela ukujula kubalulekile ekusebenzeni kwakho kwe-RF, cela indlela yokulinganisa kanye nohlelo lwesampula ku-quotation kunokuthi uyicabangele.