Dzidza Zvakadzama nezveRF PCB Design: Kubva paZvinhu Zvinokosha Kusvika paKuvandudza Zvinhu Zvitsva
Sechikwata chehunyanzvi chakadzika midzi mukugadzira PCB, Mufaro Wakazara Wakapfumayakazvipira kupa tekinoroji yepamusoro uye mhinduro dzepamusoro kune indasitiri. Muchinyorwa chino, tinopa ongororo yakazara ye Dhizaini yeRF PCB, tichigovana ruzivo rwedu rwakakura uye ruzivo rwedu pamusoro pematekiniki epamusoro evainjiniya vePCB.
1. Kunzwisisa Hunhu hweRF Circuit uye Zvinangwa zveDhizaini
(1) Hunhu hweRF Circuit
Maseketi eRF anoshanda munzvimbo dzine mafrequency akawanda, zvichiita kuti hunhu hwavo hwekutumira masaini huve hwakaoma kupfuura maseketi ekare. Zvishandiso zvekufananidzira zvakafanana ne: CHINHU CHINHUKunetseka kuongorora nemazvo macircuit eRF nekuda kwezvinhu zvakaita se marefu marefu emhepo, mhedzisiro yemutsara wekutumira, kufungisisa, kudzoreredza, uye kubatana.
Yepamusoro Software yeEDA, zvakaita se ADS (Advanced Design System) uye HFSS (High-Frequency Structure Simulator), shandisa maalgorithms akaomarara akadai se nzira dzekuenzanisa uye nzira dzekufungidzirakutevedzera macircuit eRF nemazvo. Usati washandisa maturusi aya, kunzwisisa hunhu hweRF circuit kwakakosha.
Semuyenzaniso:
●Kushanda kweganda:Pama frequency akakwira, magetsi anowanzo yerera pamusoro pemutyairi, zvichiwedzera kuramba uye zvichikanganisa kunaka kwekutumira masaini.
●Kuvharirwa kwetambo yekufambisa:Izvi zvinokanganiswa ne maitikiro echiratidzo, kureba kwetrace, uye zvinhu zve dielectric, zvichikanganisa zvakananga kuratidzwa kwechiratidzo uye kushanda zvakanaka kwekutumira.
(2) Zvinangwa zveRF PCB Design
1. Zvinangwa zveKugadzira Transmitter
Dhizaini yetransmitter inofanira kuenzana kushanda zvakanaka kwesimba uye kuvimbika kwechiratidzo:
●Kuderedza kushandiswa kwesimba remagetsikunyangwe kuve nechokwadi chekuti simba rekutumira rakakwana kwakakosha, kunyanya kune zvishandiso zvinobatwa nemaoko uye kutaurirana nesatellite.
●Muturikiri anofanira kusapindiranemachaneli ari pedyo. Ma amplifiers emagetsi anofanirwa kudzorwa nemazvo kuti simba rekuburitsa uye kurongekakudzivirira kukanganisa kwechiratidzo uye kukanganiswa kwechiteshi chiri pedyo.
2. Zvinangwa zveKugadzira Mugamuchiri
Dhizaini yemugamuchiri inofanira kuzadzisa zvinangwa zvitatu zvikuru:
●Kunzwa kwakanyanya:Mugamuchiri anofanira kudzoreredza zviratidzo zvekupinda zvisina simba nemazvo, kazhinji zvakaderera kusvika 1µVKudzora ruzha kwakakosha, kunoda ma amplifiers ane ruzha rwakaderera (LNAs) uye marongero edunhu akagadziridzwa.
●Kurambwa kwekupinda kwemashoko kunobudirira:Mafirita uye kugadzirisa macircuit zvinoshandiswa kubvisa masaini ari kunze kwebhendi munzvimbo dzakaoma dzemagetsi.
●Kushandisa simba shoma:Izvi zvakakosha kuti zvizadzise zvinodiwa pakushandisa simba zvakanaka mumaRF systems.
2. Zvinhu Zvikuru zveRF PCB Design
(1) Kusarudzwa Kwezvinhu
Kusarudza chakakodzera zvinhu zvepasizvakakosha kune Dunhu reRFmashandiro. Zvikamu zvikuru zvinosanganisira:
1. Dielectric Constant (Dk):
●Zvinokanganisa impedance uye kumhanya kwekuparadzira chiratidzo.
●Kugadzikana kwakakosha - kusiyana kudiki kweDk kunogona kutungamira kune kusawirirana kwe impedance, zvichikonzera kuratidzwa kwechiratidzo uye kuderedzwa kwesimba.
●Muenzaniso: Rogers RO4350Binopa kushanda kwakasimba kwe-high-frequency, zvichiita kuti ive yakanaka kune Zviteshi zve5G uye kutaurirana nesatellite.
2. Chinhu Chinokonzera Kunyangarika (Df):
●Anosarudza kurasikirwa nesimbapanguva yekutumira masaini.
●Zvinhu zveDf yakaderera(semuenzaniso, Zvigadziko zvePTFE) kuderedza kurasikirwa kwechiratidzo, zvichivandudza kushanda zvakanaka mu kushandiswa kwema microwave.
3. Kuwedzerwa kweThermal Coefficient (CTE):
●Mhedzisiro kugadzikana kwehukurutembiricha dzakasiyana.
●Kusaenderana kweCTE kunogona kukonzera mitswe yejoini yesolder uye kutadza kwedunhumuzvikumbiro zvakaita se zvemagetsi zvemuchadenga nemotokari.
(2) Kudzora Kusapindirana
Kufananidza Impedance chinhu chakakosha pakugadzirwa kweRF PCB. Kupindirana kwetambo dzemagetsi kunosanganisira 50Ω uye 75Ω, nekushivirira kwakasimba kwe ±5% kana kunyange ±3%.
Kudzora impedance kwakanyatsojeka kunoda kuverenga nokungwarira kwe:
●Kupamhama kwekutevera uye nzvimbo
●Kukora kweDielectric
●Kukora kwefoiri yemhangura
Maererano ne IPC-2251, maumbirwo makuru ekutumira RF anosanganisira mitsetse ye microstrip, stripline, uye coplanar waveguidesSemuenzaniso, iyo fomura ye microstrip mutsetse we impedancendeichi:
Z0=87εr+1.41ln(5.98h0.8w+t)Z_0 = \frac{87}{\sqrt{\varepsilon_r + 1.41}} \ln\left(\frac{5.98h}{0.8w + t}\right)Z0=εr+1.4187ln(0.8w+t5.98h)
Kupi NE₀ndiyo hunhu hwe impedance, εrndiyo dielectric constant, hukobvu hwe substrate, Mukatiupamhi hwekutevera, uye tukobvu hwemhangura.
(3) Dhizaini yeKuenderana kweMagetsi (EMC)
1. Kudzora Kupindirana kweMagineti (EMI)
Matsime eEMI akajairika muRF PCB anosanganisira:
●Zvinhu zvinoshanda
●Zviratidzo zvechiratidzo zvinomhanya zvakanyanya
●Sisitimu dzemagetsi
Maitiro ekuderedza EMI anoshanda:
●Kugadzirisa Marongerwo Emadunhu:Yakaparadzana maseketi ane simba guru uye ane simba shomakuderedza kupindira.
●Maitiro Ekugadzira Rutivi:Shandisa kugadzika kwenzvimbo dzakawanda, nzvimbo imwe chete, kana kuti hybridkupa nzira dzekudzoka dzisina kupindira kwakanyanya.
●Maitiro Ekudzivirira:Ita zvivharo zvesimbi zvekudzivirirakudzivirira kuburitswa kwemagetsi.
2. Dhizaini yeElectromagnetic Susceptibility (EMS)
Kuvandudza EMS kunoita kuti maseketi arambe kukanganiswa nekunze:
●Deredza nzvimbo yechiratidzo chechiratidzokuderedza ruzha runokonzerwa.
● Isa zvikamu zvefirita zvine hungwaru(ma capacitor, ma inductors) ekudzora masaini asingadiwe.
●Shandisa ma capacitor ekuparadzanisapamapini emagetsi kuti simba rigadzikane uye kuti ruzha rwemagetsi rusefe.
3. Maitiro Ekugadzira RF PCB uye Maitiro Akanakisisa
(1) Kugadzira Zvirongwa
Yakagadzirwa zvakanaka chirongwandiyo hwaro hwekugadzirwa kweRF PCB.
●Sarudzo yezvikamu:Sarudza zvikamu zvichibva pane kuwedzera, nhamba yeruzha, uye kupararira kweruzha.
●Kutarisira parameter dzezvipembenene:Funga kuti sei capacitance uye inductance yeparasitickukanganisa mashandiro epamusoro-soro.
●Marongerwo akajeka uye ane musoro:Ronga zvinhu zve kuyerera kwechiratidzo zvakanaka uye kugadzirisa matambudziko.
(2) Dhizaini yePCB Layout
1. Nheyo Dzekurongeka Kwazvo
●Ronga mamodule anoshanda akabatanakuderedza kurasikirwa kwechiratidzo.
●Tevedzera kurongeka kwekuyerera kwechiratidzo, nzvimbo kushandura, kuwedzera, uye matanho ekusefa zvine musoro.
●Iva nechokwadi chekuti kupisa kwakakwanayezvikamu zvine simba guru zvinoshandisa masinki ekupisa kana substrates dzesimbi.
2. Maitiro Akanakisisa Ekuisa Zvikamu
●Boka nemabasa:Chengeta MaRF amplifiers, ma capacitor, uye ma inductorspamwe chete kuti zvive nyore kuendesa zvinhu.
●Deredzai kupindira:Yakaparadzana zvikamu zvine simba guru uye zvine simba shoma.
●Gadzirisa kudzika kwevhu:Shandisa ndege dzakasimba dzepasikuderedza ruzha nekusawirirana kweimpedance.
Dhizaini yeRF PCB imhando ye chirango chine mativi akawandazvinoda kutonga kwakarurama pamusoro zvinhu, impedance, EMC, uye marongerwoNekutevera nzira dzakanakisisa uye kushandisa nzira dzepamusoro maturusi ekufananidzira, mainjiniya vanogona kugadzira maRF PCB anoshanda zvakanyanya anosangana nezvinodiwa zve 5G, kutaurirana kwesatellite, uye mashandisirwo epamusoro-soro.
Kutsvaga nyanzvi dzeRF PCB mhinduro? Mufaro Wakazara Wakapfumaaripo kuti abatsire. Taura nesu nhasi!
