Kunzwisisa Ununs muRF Antenna Systems

Mumaredhiyo frequency (RF) masisitimu, kufambisa kwemasaini kwakakosha kuti uite zvakakwana, uye zvikamu zvakaita seUnuns zvinotora basa rakakosha mukubudirira uku. An Unun - ipfupi yeUnbalanced kune Unbalanced - imhando yeshanduko inoshandiswa kuenzanisa iyo impedance pakati peantenna isina kuenzana uye mitsara yekutapurirana isina kuenzana, senge coaxial tambo. Impedance yekuenzanisa inovimbisa kuti iyo impedance yeantenna inowirirana netambo yekufambisa, kuderedza kurasikirwa kwechiratidzo, kukanganisa, uye kusashanda. Mismatched impedances inogona kukonzera kuratidzwa kwechiratidzo, izvo zvinoderedza kufambisa kwemagetsi uye kukanganisa maitiro ese ehurongwa.

MuPCB-yakavakirwa RF antenna masisitimu, maUnuns anowanzo shandiswa kubatanidza antenna zvakananga muPCB dhizaini, ichigonesa compact mhinduro yekupedance yekufananidza. Kunyangwe iwe uri kushanda nediki diki fomu factor zvishandiso kana hombe-chikuru RF masisitimu, kunzwisisa kuti maUnuns interface nePCB madhizaini kwakakosha pakufambisa kwemasaini.

Chii chinonzi Unun muPCB-Yakabatanidzwa RF Systems?

An Unun ishanduro yakagadzirirwa kuvharisa mukaha pakati pezvinhu zvisina kuenzana muRF system, inowanzo shandiswa kuenzanisa iyo impedance pakati peiyo antenna isina kuenzana uye isina kuenzana yekufambisa tambo. Izwi rekuti "Unun" rinomiririra Unbalanced to Unbalanced, richiratidza basa rayo kuenzanisa impedance pakati pemasystem maviri asina kuenzana. MuPCB-yakabatanidzwa RF antenna masisitimu, iyo Unun inofambisa impedance kuenzanisa nekuona kuti iyo isina kuenzana antenna yakabatana nePCB inofanana nekukanganisa kwetambo yekufambisa, kazhinji coaxial tambo.

Semuyenzaniso, PCB antenna inogona kunge iine impedance ye50Ω, asi coaxial tambo inoidyisa inogona kunge iine impedance ye75Ω. An Unun ine 1: 1 impedance ratio inovimbisa kuti ese PCB antenna uye coaxial transmission line inofananidzwa, ichideredza chiratidzo chekuratidzira uye nekuona yakanyanya kufambiswa kwesimba.

MaUnuns akakosha pakugadzira compact RF masisitimu, seaya anowanikwa mumidziyo inobatwa nemaoko kana maIoT maapplication, uko antenna inobatanidzwa zvakananga paPCB.

Akakosha Zvimiro uye Zvikamu zveUnuns muPCB Systems

Dhizaini yeTransformer : Mumasystem eRF akavakirwa paPCB, maUnuns anowanzo kugadzirwa netransformer ine mawindings ekutanga neechipiri akasungirirwa pa ferrite core. Mawindings ekutanga anobatanidza neantenna isina kuenzana paPCB, nepo yechipiri ichibatanidza kutambo yekutumira.

Magadzirirwo : MaUnuns anouya mumhando dzakasiyana-siyana, dzakadai se1:1, 4:1, kana 9:1, imwe neimwe yakagadzirirwa zvinodiwa zvakasiyana zvekubatanidza impedance. Semuenzaniso, 1:1 Unun inowanzo shandiswa kana antenna netambo yekutumira zvine impedance imwechete, nepo 9:1 Unun ichi shandiswa kufananidza maantenna ane impedance yakakwira kune tambo dze coaxial dze50Ω dzakajairwa.

Mafambiro Enguva : MaUnuns akagadzirwa kuti ashande munzvimbo dzakasiyana-siyana, zvichiita kuti akwanise kushandiswa pakugadzirisa maPCB antenna akasiyana. Kusarudzwa kwezvinhu zvepakati uye magadzirirwo emota zvinokanganisa mashandiro eUnun munzvimbo dzakasiyana-siyana dzeRF.

Kapfupi uye Kakareruka : Chimwe chezvakanakira zvikuru zveUnuns mumasisitimu ePCB ndechekuti dzakatetepa uye dzakareruka, zvichiita kuti dzikwanise kubatanidzwa munzvimbo dzakamanikana sedzinowanikwa mumidziyo yeRF inotakurika. Izvi zvinoita kuti PCB ishandise zvakanaka dzimba.

Kuramba Mamiriro Ekunze : Kunyange hazvo maRF application mazhinji achinyanya kutarisa pakuisa mukati meimba, masisitimu ekunze anoda maUnuns anodzivirira mamiriro ekunze. Mumashandisirwo ekunze, akadai seredhiyo kana masisitimu ari mumunda, maUnuns anofanira kutsungirira mamiriro ekunze akaoma pasina kukanganisa mashandiro ekunze.

Zvikumbiro zveUnuns muPCB-Yakavakirwa RF Antenna Systems

Ununs anoshandiswa zvakanyanya mumhando yePCB-yakabatanidzwa RF zvikumbiro. Heino mienzaniso mishoma yekuti maUnuns anobatsira sei:

1. Quarter-Wave Vertical Antennas muPCB Dhizaini: Antenna yekota-wave yakatwasuka antenna inowanzo ratidza kusamira kunosvika 20Ω, iyo isingaenderane neyakajairika 50Ω coaxial feeder. An Unun inoshandiswa mujinga rema antennas kuenzanisa iyo 20Ω impedance yeantenna kune 50Ω coaxial feeder, kuve nechokwadi chekufambisa kwemasaini.
2. End-Fed Wire Antennas: End-fed antennas, ayo anowanzo shandiswa muamateur radio kana midziyo yekutaurirana, ingangoda impedance inofananidzwa pakati peantenna necoaxial transmission line. Madhizaini ePCB anowanzo batanidza Unun kuti anyatso kuenzanisa iyo impedance panzvimbo yekudyisa.
3. Long-Waya Antennas muPortable PCB Systems: Mune marefu-waya antenna akabatanidzwa muPCB-based system, iyo impedance mismatch pakati peantenna uye mutsara wekutumira inowanzogadziriswa uchishandisa Unun. Iyo Unun inopa yakakwana impedance shanduko, inosimudzira kufambisa kwemasaini uye kugamuchira.

Maitiro eUnuns Anobatanidza nePCB Dhizaini

Pakugadzira maRF PCB , kunyanya ayo ane maantenna akabatanidzwa, kuve nechokwadi chekuti kuenderana kweimpedance kwakakodzera kwakakosha pakuderedza kurasikirwa kwesignali uye kuwedzera mashandiro esystem. Ununs inobvumira vagadziri vePCB kuti vaenzanise nyore nyore impedance pakati pemaantenna asina kuenzana (anowanzo batanidzwa paPCB) uye mitsetse yekutumira isina kuenzana (senge tambo dzecoaxial). Pasina kuenderana kweimpedance kwakakodzera, maPCB system anogona kutambura nekuratidzira kwesignali, kudzikira kwesimba remagetsi, uye kushanda kweantenna kusingakoshi.

Ununs dzinogona kuiswa zvakananga mumagadzirirwo eRF PCB, zvichipa mhinduro diki yekufananidza impedance mukati mesystem. Hudiki hwadzo hunodzibvumira kuiswa mukati mePCB stack-up kana kuiswa zvakananga panzvimbo yekudyisa yeantenna. Kubatanidzwa uku kunoita kuti system yese, kubva kune antenna kusvika kune transmission line, ishande zvakanaka pasina kudiwa kwezvikamu zvekunze.

Baluns vs Ununs: Misiyano Yakakosha

MuRF masisitimu, vese maBaluns neUnuns vanoita mabasa akakosha, asi vanoshanda zvakasiyana. Heino kuenzanisa kwezviviri:

Musiyano wakakosha pakati peBaluns neUnuns ndewekuti maBaluns anoshandura masisitimu pakati peakaenzana uye asina kuenzana masisitimu, nepo maUnuns akatarisana nekupedance kuenzanisa pakati peasina kuenzana masisitimu. Ose ari maviri akakosha masystem muRF masisitimu, uye kunzwisisa nguva yekushandisa imwe neimwe kwakakosha pakuita kwakaringana.

mhedziso

PaHighleap Electronic, tinonzwisisa kuti kufambisa kwemasaini kunoshanda kuri pamusimboti wepamusoro-inoita RF masisitimu. Ununs vanoita basa rakakosha mukuona kuti iyo impedance pakati peantenna isina kuenzana uye mitsara yekutapurirana inofananidzwa nemazvo, optimize kutamisa chiratidzo, kuderedza kurasikirwa, uye kuderedza chiratidzo chekuratidzira. Yavo compact dhizaini, yakafara frequency renji, uye kureruka kwekubatanidzwa muPCBs inovaita iyo yakanakira sarudzo kune dzakasiyana siyana dzeRF application.

Nekubatanidza maUnuns muRF PCB dhizaini yako, unoita shuwa kuti iyo impedance yakanyatsoenderana, ichibvumira kukwirisa simba rekufambisa uye kudzivirira kusashanda kwechiratidzo kurasikirwa. Kunyangwe iwe uri kushanda pamidziyo inotakurika, refu-waya antenna masisitimu, kana compact RF mhinduro, kunzwisisa uye kushandisa maUnuns mumaantenna masisitimu kwakakosha kuti uwane kuita kwepamusoro uye kutaurirana kwakavimbika.

KuHighleap Electronic, isu tine hunyanzvi mukugadzira maPCB uye kugadzira maPCB , tichipa mhinduro dzakagadzirirwa iwe kuti dzienderane nezvinodiwa neRF system yako. Sezvo tekinoroji yeRF ichiramba ichichinja, Ununs icharamba iri musimboti wekugadzira maantenna anoshanda zvakanaka, ichivhara musiyano uripo pakati pema antenna systems nemitsetse yekutumira, uye ichivimbisa kushanda zvakanaka muma RF application akasiyana siyana. Tivimbei kuti tipe mhando uye kurongeka kwaunoda muma RF PCB designs ako.

Bata isu nhasi kuti udzidze zvakawanda nezve nzira yatingakubatsira nayo kukwidziridza masisitimu ako eRF nenyanzvi yedu PCB yekugadzira uye masevhisi egungano!