Moralo o Tloaelehileng oa Radar PCB, Tlhahiso le Litšebeletso tsa Kopano

Nakong ena ea tsoelo-pele e potlakileng ea theknoloji, litsamaiso tsa radar ke tsa bohlokoa indastering ho tloha likoloing le lifofaneng ho ea likhokahanong le ts'ireletsong. Litsamaiso tsena li itšetlehile ka karolo ea bohlokoa: Radar PCB. Radar PCB e entsoeng hantle e netefatsa ts'ebetso e nepahetseng ea matšoao, ts'ebetso e matla, le ts'ebetso e tšepahalang tlas'a maemo a thata. Sengoloa sena se hlahloba metheo ea Radar PCB, likarolo tsa tsona, thepa, lits'ebetso le lintlha tsa moralo ho u thusa ho etsa liqeto tse nang le tsebo bakeng sa merero ea hau. Bakeng sa liboto tsa antenna tsa radar tsa RO4533 , khetho ea laminate le jiometri ea conductor li lokela ho netefatsoa hammoho pele ts'ebetso ea antenna e hlahlojoa lisampoleng tse entsoeng.

PCB ea Radar ke Eng?

Radar PCB ke boto e khethehileng ea potoloho e etselitsoeng ho hlahisa, ho fetisa le ho amohela mats'oao a maqhubu a phahameng a radar. E sebetsa e le karolo ea mantlha lits'ebetsong tsa radar, e ts'ehetsa likarolo tsa bohlokoa joalo ka antenna, RF Circry, le likarolo tsa tlhahlobo ea matšoao. Li-PCB tsa radar li bohlokoa ts'ebetsong ea litsamaiso tsa radar, tse itšetlehileng ka taolo e nepahetseng ea mats'oao a maqhubu a phahameng. Li-PCB tsena li sebetsa ka ho hlahisa mats'oao a radar ka potoloho ea RF, ho a fetisa ka antenna, le ho amohela matšoao a bonahalitsoeng (echoes) kamora ho otla ntho. Li-echo tsena li ntse li sebetsoa ho fumana lintlha tsa bohlokoa, tse kang sebaka sa ntho, lebelo, kapa maemo a tikoloho.

Ho na le mefuta e fapaneng ea li-PCB tsa Radar, ho kenyeletsoa li-PCB tsa RF , li-PCB tsa microwave , le li-PCB tsa millimeter-wave . Tsena li etselitsoe ho sebetsana le mefuta e itseng ea maqhubu le litlhoko tsa ts'ebetso:

• • Li-PCB tsa RF li sebelisoa bakeng sa maqhubu a tlase a microwave (ho fihla ho 10 GHz) 'me hangata a kenngoa lits'ebetsong tsa radar ea likoloi kapa radar ea boemo ba leholimo.
  • Li-PCB tsa microwave e sebetsa ho tloha ho 1 GHz ho isa ho 30 GHz, e atisang ho sebelisoa bakeng sa litsamaiso tsa radar tsa mabala a mahareng ho isa ho a malelele sebakeng sa sefofane le lits'ebetsong tsa ts'ireletso.
  • Li-PCB tsa millimeter-Wave e sebetsa ka maqhubu a ka holimo ho 30 GHz 'me e bohlokoa bakeng sa lisebelisoa tse tsoetseng pele tsa radar, tse kang tse sebelisoang likoloing tse ikemetseng, li-sensing tsa indasteri, le likhokahano tsa 5G.

Bokhoni bona ba ho sebetsana le matšoao a maqhubu a phahameng ka nepo bo etsa hore li-PCB tsa Radar e be tsa bohlokoa bakeng sa lits'ebetso tse hlokang ho fumanoa ka nepo le ho sebetsa ha data ka nako ea nnete. Ho tloha lits'ebetsong tsa polokeho ea likoloi le ho tsamaea ka sefofane ho ea ho ts'ireletso le tlhahlobo ea boemo ba leholimo, li-PCB tsa Radar li bohlokoa bakeng sa ho nolofalletsa litsamaiso tsa radar tse tšepahalang, tse sebetsang hantle haholo. Moralo oa bona o netefatsa hore lits'ebetso tsa radar li ka sebetsa ka nepo le ka katleho, esita le libakeng tse hlokang ka ho fetesisa, ho etsa hore Radar PCBs e be thekenoloji ea motheo liindastering moo ho etsa liqeto ka nako ea nnete ho leng bohlokoa.

Likarolo tsa mantlha tsa Radar PCB

Radar PCB ke karolo ea bohlokoa lits'ebetsong tsa radar, e nolofalletsang phetiso e nepahetseng, kamohelo le ts'ebetso ea matšoao. E fihlella ts'ebetso ena ka ho kopanya likarolo tse 'maloa tsa bohlokoa:

• • fetisang: E matlafatsa lets'oao la radar le hlahisoang ke lijenereithara tsa waveform ho ea maemong a matla a phahameng, ho netefatsa hore lets'oao le ka tsamaea sebaka se selelele.
  • tape: Ts'ebetso e bonts'a matšoao (li-echoes) ka ho li holisa, ho li sefa, le ho li theola ho fumana lintlha tsa bohlokoa, joalo ka sebaka, lebelo, le ho lemoha ntho.
  • Antenna: E romela lets'oao la radar tikolohong 'me e fumana li-echoes tse bonts'itsoeng. Mefuta ea bohlokoa e kenyelletsa li-parabolic reflectors, li-arrays tse tsamaeang ka mekhahlelo (elektronike), le lihlopha tse hlophisitsoeng bakeng sa litsamaiso tse kopanetsoeng.
  • Moqhekelli: E sebetsa e le sesebelisoa, e lumellang lenakana ho chenchana pakeng tsa mekhoa ea phetiso le ea ho amohela ntle le ho senya seamoheli se hlokolosi.
  • Litataiso tsa maqhubu+
  • Potoloho ea Qeto ea Liqeto: E bapisa matla a lets'oao le sebetsitsoeng khahlanong le moeli o boletsoeng esale pele ho fumana hore na sepheo se nepahetseng se teng kapa haeba lets'oao e le lerata feela.

Likarolo tsena li theha motheo oa Radar PCB, e sebetsang 'moho ho netefatsa phallo ea mats'oao, ho nepahala le ho ts'epahala lits'ebetsong tsa radar. Ho kopanngoa ha likarolo tsena ho thusa litsamaiso tsa radar ho etsa mesebetsi ea bohlokoa e kang ho lemoha ntho, tekanyo ea mefuta-futa, le lipalo tsa lebelo. Ebang e sebelisoa litsamaisong tsa polokeho ea likoloi, ho latela sesole, kapa ho tsamaea ka sefofane, Radar PCB e hlophisitsoeng hantle e netefatsa ts'ebetso e phahameng le ts'ebetso e nepahetseng.

Lintlha tsa bohlokoa tsa Radar PCBs

Li-PCB tsa Radar li bohlokoa bakeng sa ho nolofalletsa litsamaiso tsa radar tsa maqhubu a phahameng hore li sebetse ka ts'epo le ka nepo. Liboto tsena tse khethehileng tsa potoloho li etselitsoe ho fihlela litlhoko tse boima tsa ts'ebetso, joalo ka ho sebetsana le maqhubu a microwave le millimeter-wave, ho netefatsa botsitso ba mocheso, le ho sebetsa maemong a thata. Ka tlase ke setsebi le kakaretso e qaqileng ea likarolo tsa bohlokoa tse hlalosang Radar PCB e sebetsang hantle.

1. Tšebetso e phahameng ea maqhubu

Litsamaiso tsa radar li sebetsa maqhubung a tlohang ho lihlopha tsa microwave (mohlala, 24 GHz) ho ea ho lihlopha tsa maqhubu a millimeter (mohlala, 77 GHz le ho feta). Maqhubu a joalo a phahameng a bohlokoa bakeng sa lits'ebetso tse kang ho lemoha ho thulana ha likoloi, radar ea boemo ba leholimo, le litsamaiso tsa tšireletso. Ho boloka matla a lets'oao le ho hlaka, li-PCB tsa Radar li tlameha ho fokotsa tahlehelo ea lets'oao le tšitiso ea motlakase (EMI). Sena se finyelloa ka tšebeliso ea thepa e khethehileng ea tahlehelo e tlase joalo ka Rogers RO4003C, li-laminate tse thehiloeng ho PTFE, le li-substrate tse ling tsa maqhubu a phahameng. Ho phaella moo, litsela tse khutšoane le tse tobileng haholoanyane tsa lets'oao li kenyelletsoa moralong ho fokotsa tahlehelo ea ho kenngoa le ho netefatsa botšepehi ba lets'oao.

2. Tšitiso e Laoloang

Taolo ea impedance e bohlokoa bakeng sa li-circuits tsa radar tsa RF le microwave ho netefatsa phatlalatso ea mats'oao a boreleli ho pholletsa le PCB. Ntle le ho ts'oanela ho ts'oana hantle, mats'oao a radar a ka ba le bothata ba ho bonahatsa, tahlehelo le ho sotha, ho theola ts'ebetso ea sistimi. Li-PCB tsa Radar li fihlella ts'ebetso e laoloang ka:

• • Maemo a ntlafetseng (bophara, botenya, sebaka) ho ipapisitsoe le "dielectric constant" ea substrate (Dk).
  • Moralo o hlokolosi oa li-stack-up ho laola ts'ireletso ka har'a liboto tse nang le mekhahlelo e mengata ka ho sebelisa lifofane tse fatše le ts'ireletso.
  • Lisebelisoa tsa ketsiso, joalo ka HFSS kapa CST Microwave Studio, ho bolela esale pele le ho netefatsa boits'oaro ba impedance pele bo etsoa.

Taolo e nepahetseng ea impedance e bohlokoa lits'ebetsong tse joalo ka lisensara tsa radar ea likoloi le litsamaiso tsa ts'ireletso, moo ts'epahalo ea matšoao e amang polokeho le ts'ebetso ka kotloloho.

3. Tsamaiso ea Mocheso

Lisebelisoa tsa radar, haholo-holo li-transmitter tsa radar tse matla haholo, li hlahisa mocheso o moholo nakong ea ts'ebetso. Ntle le taolo e nepahetseng ea mocheso, mocheso o feteletseng o ka theola likarolo, oa khutsufatsa nako ea bophelo, 'me oa senya ts'ebetso. Li-PCB tsa Radar li sebelisa mekhoa e mengata ea ho laola mocheso, ho kenyelletsa:

• • Litsela tsa mocheso: Tsamaisa mocheso ho tloha ho likarolo tse kentsoeng holim'a metsi ho ea ho likarolo tsa ho senya mocheso ka hare kapa ka ntle.
  • Metal-core PCBs (MCPCBs): Li-cores tsa aluminium kapa tsa koporo li ntlafatsa conductivity ea mocheso bakeng sa lisebelisoa tse matla haholo.
  • Li-substrates tse phahameng tsa thermal-conductivity, tse kang PTFE e tletseng ka ceramic, ka katleho e fetisetsa mocheso ho tloha libakeng tse matla a matla.
  • Licheso tsa mocheso le li-spreaders: Fana ka litharollo tsa ho pholisa kantle bakeng sa liamplifier tsa matla le likarolo tsa RF.

Tsamaiso e sebetsang hantle ea mocheso e tiisa ts'ebetso e tsitsitseng le ho tšepahala, haholo-holo lits'ebetsong tse tsoelang pele, tse boima haholo joaloka radar ea taolo ea sephethephethe sa sefofane le mekhoa ea ho lemoha indasteri.

4. Ho tšoarella Libakeng tse thata

Li-PCB tsa radar hangata li sebelisoa libakeng tse nang le mocheso o feteletseng, mongobo, ho thothomela le ho pepesehela lik'hemik'hale. Bakeng sa lits'ebetso tse joalo ka sefofane, radar ea sesole, le sistimi ea likoloi, ho tšoarella ho bohlokoa haholo. Ho netefatsa ho ts'epahala ha nako e telele, li-PCB tsa radar li entsoe ka:

• • Botsitso bo phahameng ba mocheso: Lisebelisoa tse nang le Glass Transition Temperature (Tg) e phahameng li thibela ho soahlamana kapa ho senyeha tlas'a khatello ea mocheso.
  • Khanyetso ea mongobo: Li-substrates tse nang le mongobo o tlaase, tse kang PTFE-based laminates, li thibela tahlehelo ea matšoao maemong a mongobo.
  • Matlafatso ea mechine: Mekhahlelo ea koporo e teteaneng le li-substrates tse thata li ntlafatsa ho hanyetsa ho thothomela le khatello ea kelello ea mochine.
  • Liaparo tse sireletsang: Liaparo tse tloaelehileng, tse kang polyurethane kapa silicone, li sireletsa li-PCB ho tloha mongobo, lerōleng le lintho tse senyang.

Mohaho ona o matsutla o lumella li-PCB tsa Radar ho sebetsa ka ts'epo lits'ebetsong tse bohlokoa joalo ka lits'ebetso tsa radar tsa maritime, li-ADAS tsa likoloi, le lits'ebetso tsa ts'ireletso ea ts'ireletso.

5. Tahlehelo ea Dielectric e tlase

Lisebelisoa tsa radar li itšetlehile ka phetiso e nepahetseng le kamohelo ea matšoao ka maqhubu a phahameng haholo. Tahlehelo ea dielectric, e hlahang ha matšoao a ntse a ata ka har'a substrate ea PCB, e ka fokotsa matla a lets'oao le ho senya ts'ebetso ea radar. Ho loantša sena, li-PCB tsa Radar li sebelisa lisebelisoa tse nang le:

• • Dielectric Constant e tlase (Dk): Di-substrate tse kang Rogers RO4350B le PTFE di netefatsa tieho e nyane ya letshwao le ho sotha ha mokgahlelo.
  • Ntho e Tlase ea Phallo (Df): Df e tlase e fokotsa tahlehelo ea matla, e boloka ho hlaka le matla a pontšo.
  • Ho se ts'oane: Thepa e tšoanang ea dielectric ho pholletsa le PCB e thibela ho se lumellane ha impedance le phapang ea mekhahlelo.

Bakeng sa litsamaiso tsa radar tsa millimeter-wave tse sebetsang ho 77 GHz kapa ho feta, tahlehelo e tlase ea dielectric e bohlokoa haholo bakeng sa ho fihlela tlhahlobo ea nako e telele, litšoantšo tse nang le qeto e phahameng, le ts'ebetso ea mats'oao ka potlako.

6. Moqapi o nepahetseng bakeng sa Likopo tse Phahameng ka ho Fetisisa

Ho fihlella ts'ebetso e phahameng ho li-PCB tsa Radar ho hloka boenjiniere bo nepahetseng le mekhoa e tsoetseng pele ea meralo. Baqapi ba tlameha ho ntlafatsa sebopeho sa PCB bakeng sa matshwao a RF a maqhubu a phahameng ha ba ntse ba fokotsa litlamorao tsa likokoana-hloko, lerata le litahlehelo. Lintlha tsa bohlokoa li kenyelletsa:

• • Ntlafatso ea Stack-up: Ho beoa ha leano la ho beoa ha lets'oao, matla, le lifofane tsa fatše ho ntlafatsa ho itšehla thajana le ho fokotsa lipuo tse fapaneng.
  • Taolo ea Botšepehi ba Letšoao: Ho sebelisa tšireletso ea RF, lifofane tse fatše, le mesaletsa e laoloang ea impedance ho boloka ho hlaka ha matšoao.
  • Litsela Tse Khutšoane tsa Phetiso: Ho fokotsa bolelele ba ho latella le ho etsa bonnete ba hore tsela e hloekileng e fokotsa tieho le tahlehelo ea matšoao.
  • Ketsiso le Teko: Ketsiso e tsoetseng pele ea motlakase le liteko tsa lefats'e tsa nnete li netefatsa ts'ebetso ea PCB pele e romelloa.

Ho nepahala ha moralo ho netefatsa hore li-PCB tsa Radar li ka fihlela litlhoko tse boima tsa ts'ebetso ea lisebelisoa tsa radar lits'ebetsong tsa likoloi, tsa sefofane le tsa indasteri.

Li-PCB tsa Radar li entsoe ka boqhetseke ho sebetsana le liphephetso tsa ts'ebetso ea maqhubu a holimo, taolo ea mocheso le tikoloho e thata ha li ntse li boloka ho se sebetse ho laoloang le tahlehelo e tlase ea dielectric. Likarolo tsena li li etsa tsa bohlokoa bakeng sa lits'ebetso tsa bohlokoa joalo ka lits'ebetso tsa ho khanna tse ikemetseng, taolo ea sephethephethe sa sefofane, leihlo la sesole le radar ea boemo ba leholimo. Ka ho sebelisa lisebelisoa tse tsoetseng pele, litharollo tsa mocheso, le mekhoa e nepahetseng ea moralo, li-PCB tsa Radar li netefatsa ts'epo e ikhethang, ho nepahala le ts'ebetso maemong a boima haholo.

Mefuta ea li-PCB tsa Radar

Di-module tsa radar tsa dikoloi le tsa indasteri le tsona di ka hlahlojwa mabapi le tlhahiso e ikgethang ya RF laminate PCB kapa ITEQ IT-88GMW PCB e hahuwang ha moralo wa maqhubu, tekanyetso ya tahlehelo, le kaho ya tlhahiso di hlaloswa.

Sistimi e fapaneng ea radar e hloka mefuta e ikhethileng ea li-PCB tsa Radar, e 'ngoe le e' ngoe e ntlafalitsoe bakeng sa lits'ebetso tse ikhethang:

1. PCB ea Doppler Radar
   E sebelisa phello ea Doppler ho lekanya lebelo la lintho tse tsamaeang. E tloaeleha ho liradara tsa likoloi le lits'ebetso tsa ho lemoha lebelo.
2. Monopulse Radar PCB
   E lekanya boemo ba sepheo ka ho bapisa litšobotsi tsa lets'oao ka har'a molumo o le mong. Hangata e sebelisoa bakeng sa litsamaiso tse nepahetseng tsa ho latela le ho tataisa.
3. Passive Radar PCB
   E lemoha sepheo ka ho sebelisa matshwao a ambient RF, e etsa hore e be e loketseng ditshebediso tse hlokang mesi e fokolang e sebetsang.
4. Boemo ba leholimo Radar PCB
   E sekaseka maemo a pula le maemo a moya ka ho sebedisa matshwao a maqhubu a radio, hangata a kopantswe le thekenoloji ya Doppler bakeng sa ho metha lebelo la moya.
5. Pulsed Radar PCB
   E fana ka matla a phahameng a matla le ho bala sebaka sa ntho ho latela tieho ea nako ea matšoao a bonahalitsoeng. E sebelisoa lits'ebetsong tse hlokang sebaka se nepahetseng hantle le ho lemoha motsamao.

Lintlha tsa Moqapi bakeng sa li-PCB tsa Radar

Ho rala li-PCB tsa Radar tse sebetsang hantle ho hloka moralo o hlokolosi le ho ela hloko lintlha tse felletseng ho fihlela litlhoko tse matla tsa litsamaiso tsa sejoale-joale tsa radar. Li-PCB tsa radar hangata li sebetsa ho microwave le millimeter-wave frequencies 'me hangata li sebelisoa libakeng tse thata. Ho netefatsa ts'ebetso e ts'eptjoang le e sebetsang hantle, lintlha tsa bohlokoa tse kang botšepehi ba matšoao, botsitso ba mocheso le ho itšehla thajana li tlameha ho ntlafatsoa ka hloko. Sengoliloeng sena se fana ka kakaretso e felletseng ea likarolo tsa bohlokoa tsa moralo bakeng sa ho fihlela li-PCB tsa Radar tsa boleng bo holimo tse fanang ka ho nepahala, ho sebetsa hantle le ho tšoarella.

1. Tsela e Laolehileng ea Impedans

Li-PCB tsa Radar li sebetsa ka maqhubu a phahameng, moo esita le li-impedance tse nyane tse sa tsamaisaneng li ka lebisang ponts'ong ea mats'oao, ho thefuleha le ho lahleheloa ke botsitso ba matšoao. Litsela tse laoloang tsa impedance li bohlokoa ho netefatsa hore matšoao a tsamaea ka har'a mesaletsa ea PCB ka ho senyeha ho fokolang. Ho fihlela sena, ho tlameha ho nahanoa lintlha tse 'maloa tsa moralo, joalo ka geometry ea trace, khetho ea lisebelisoa tsa dielectric, le optimization ea layer stack-up. Bophara ba trace, botenya, le sebaka se lokela ho baloa hantle ho ipapisitsoe le maqhubu a ts'ebetso le thepa ea dielectric. Ho feta moo, lisebelisoa tsa papiso ea maqhubu a phahameng joalo ka HFSS le CST Microwave Studio li bohlokoa bakeng sa ho netefatsa moralo. Litsamaiso tse laoloang tsa impedance li bohlokoa bakeng sa ho boloka mats'oao a hloekileng le a sa sotheheng lits'ebetsong tsa radar, ho netefatsa ts'ebetso e ts'epahalang lits'ebetsong tsohle tse kang radar ea likoloi le litsamaiso tsa sefofane.

2. Tsamaiso ea Mocheso

Sistimi ea radar, haholo lisebelisoa tse matla haholo joalo ka li-transmitters tsa radar le li-antenna tse hlophisitsoeng ka mekhahlelo, li hlahisa mocheso o moholo. Ntle le taolo e lekaneng ea mocheso, mocheso o feteletseng o ka baka tšenyo ea karolo, oa fokotsa nako ea bophelo ba PCB, 'me oa theola ts'ebetso ka kakaretso. Mekhoa e sebetsang ea taolo ea mocheso e kenyelletsa ts'ebeliso ea li-vias tsa mocheso, li-PCB tsa mantlha tsa tšepe (MCPCBs), le likarolo tse teteaneng tsa koporo. Thermal vias thusa ho fetisa mocheso ho tloha likarolong tse matla-e matla ho ea ho likarolo tse ka hare kapa lisinki tsa mocheso tse ka ntle, ha MCPCB e ntlafatsa ho senya mocheso ka ho kenyelletsa motheo oa tšepe. Ho phaella moo, ho sebelisa lisebelisoa tse nang le mocheso o phahameng oa mocheso, tse kang li-composites tsa PTFE tse tletseng ceramic, li thusa ho laola mocheso ka katleho. Tsamaiso e nepahetseng ea mocheso e tiisa ho ts'epahala ha nako e telele, e fokotsa ts'ebetso ea ts'ebetso ka lebaka la ho feto-fetoha ha mocheso, 'me e sireletsa likarolo tse hlokolosi hore li se ke tsa chesa haholo nakong ea ts'ebetso e tsoelang pele.

3. Phokotso ea Tahlehelo ea Letšoao

Tahlehelo ea mats'oao, kapa ho fokotseha, e fetoha ntho e tšoenyang haholo ka maqhubu a maqhubu a microwave le millimeter-wave, moo esita le mefokolo e nyane e ka theolang ts'ebetso ea radar. Ho fokotsa tahlehelo ea lets'oao ho bohlokoa ho boloka matla a lets'oao, ho hlaka le ho fapana. Mekhoa e ka sehloohong ea ho fokotsa tahlehelo ea matšoao e kenyelletsa ho sebelisa litsela tse khutšoanyane, tse tobileng tsa litsela bakeng sa litsela tse phahameng tsa maqhubu, ho khetha thepa ea dielectric ea tahlehelo e tlaase (mohlala, PTFE-based laminates), le ho qoba liphello tsa likokoana-hloko tse kang ho kobeha ho sa hlokahaleng, vias, le crossovers. Libaka tse boreleli tsa koporo le tsona li bohlokoa ho fokotsa tahlehelo ea letlalo, tse hlahellang haholoanyane maemong a holimo. Ka ho fokotsa tahlehelo ea mats'oao, lits'ebetso tsa radar li ka fumana maemo a ntlafetseng, tharollo e ntlafalitsoeng, le ts'ebetso e phahameng lits'ebetsong tse kang radar ea leholimo le lisebelisoa tsa ho khanna tse ikemetseng.

4. Ho Sireletsa le ho Ikhetha

Li-PCB tsa radar hangata li sebetsa libakeng tse nang le tšitiso e kholo ea motlakase (EMI) e ka sitisang mats'oao a maqhubu a phahameng. Ho sireletsa le ho itšehla thajana hoa hlokahala ho netefatsa botšepehi ba matšoao le ho thibela ho senyeha ho tsoa lerata, EMI, le crosstalk. Mekhoa ea ho sireletsa e kenyelletsa ho sebelisa lifofane tse fatše tse sa khaotseng ka tlas'a mats'oao a RF, ho eketsa lithebe tsa koporo kapa lirafshoa tsa tšepe ho potoloha likarolo tse thata, le ho sebelisa terata ho ba le masimo a motlakase. Ntle le moo, ho arola li-circuits tsa RF le tsa dijithale ka 'mele ho fokotsa kotsi ea tšitiso, athe litsela tse fapaneng tsa ho khutla le litsela tse laoloang tsa ho khutla li fokotsa ho ba le lerata. Ho sireletsa le ho itšehla thajana ho netefatsa hore litsamaiso tsa radar li fana ka ts'ebetso e tšepahalang, e se nang tšitiso, leha e le libakeng tse lerata kapa tse matla haholo.

5. Multilayer Stack-Up Optimization

Sistimi ea sejoale-joale ea radar hangata e hloka li-PCB tsa multilayer ho amohela lipotoloho tse rarahaneng, kabo ea motlakase, le lintlha tse kopaneng. Ho ntlafatsa li-stack-up tsa multilayer ho bohlokoa bakeng sa ho leka-lekanya botšepehi ba matšoao, ho itšehla thajana le taolo ea mocheso. Lintlha tsa bohlokoa li kenyelletsa ho beha ka nepo likarolo tsa mats'oao a RF lipakeng tsa lifofane tsa fatše ho fokotsa EMI le crosstalk, ho laola botenya ba dielectric bakeng sa ho bapisa ho nepahetseng ha pherekano, le ho netefatsa matla a nepahetseng le kabo ea fatše ho fokotsa lerata le ho ntlafatsa botsitso. Ho feta moo, ho kenyelletsa likarolo tsa taolo ea mocheso, joalo ka li-cores tsa tšepe, ho thusa ho theola mocheso ha o ntse o boloka botsitso ba mochini. Multilayer stack-up e etselitsoeng hantle e thusa li-PCB tsa radar hore li kenelle ka har'a li-module tsa compact radar le ho boloka botsitso ba matšoao ha li ntse li fokotsa tšitiso ea motlakase.

6. Khetho ea Boitsebiso bakeng sa Maqhubu a Phahameng

Bakeng sa merero ea mmWave, thepa ea PCB ea radar ea 77 GHz e tlameha ho khethoa hammoho le stackup, profil ea koporo, geometry ea antenna, le mamello ea tlhahiso ho fapana le ho tsoa lebitsong la laminate feela.

Ho khetha thepa e nepahetseng bakeng sa li-PCB tsa radar ho bohlokoa ho rarolla mathata a kang tahlehelo ea lets'oao, taolo ea impedance, le ts'ebetso ea mocheso. Lisebelisoa tse kang li-laminate tse thehiloeng ho PTFE le li-substrate tsa maqhubu a phahameng tsa Rogers (mohlala, RO4350B, RO3000) li fana ka botsitso bo botle ba dielectric le lintlha tse fokolang tsa ho qhalana, e leng se etsang hore li be ntle bakeng sa lits'ebetso tsa maqhubu a phahameng. Lisebelisoa tse tletseng ceramic li ntlafatsa conductivity ea mocheso ha li ntse li fokotsa tahlehelo ea lets'oao, 'me foil ea koporo e tlase e fokotsa tahlehelo ea litlamorao tsa letlalo maqhubung a phahameng. Khetho e nepahetseng ea lisebelisoa e netefatsa hore li-PCB tsa radar li fihlela litlhoko tse itseng tsa maqhubu ha li ntse li leka-lekanya litšenyehelo, ts'ebetso ea mocheso le ho tšoarella. Likhetho tsa thepa li ama ka kotloloho ts'ebetso eohle, ts'epo le bophelo ba litsamaiso tsa radar.

Ho rala Radar PCB e sebetsang hantle haholo ho kenyelletsa ho sebetsana le lintlha tse ngata tsa bohlokoa, ho kenyelletsa le tsamaiso e laoloang ea tšitiso, taolo ea mocheso, phokotso ea tahlehelo ea matšoao, le ho sireletsa, ha o ntse o ntlafatsa li-stack-ups tse ngata le ho khetha lisebelisoa tse loketseng. Ka ho laola likarolo tsena tsa meralo ka hloko, baenjiniere ba ka fihlela sets'oants'o sa matšoao a holimo, tšitiso e nyane, le ts'ebetso e ts'oanang. Sena se netefatsa hore litsamaiso tsa radar li sebetsa ka ts'epahalo ho lits'ebetso tse batloang haholo, joalo ka likoloi tsa ADAS, ho tsamaea ka sefofane, tlhahlobo ea boemo ba leholimo le radar ea ts'ireletso. Radar PCB e hlophisitsoeng hantle ke motheo oa ho ntšetsa pele moloko o latelang oa theknoloji e nepahetseng ea radar, e fanang ka ts'epo le ts'ebetso e hlokahalang bakeng sa lits'ebetso tsa morao-rao tsa radar.

fihlela qeto e

Li-PCB tsa Radar ke mokokotlo oa litsamaiso tsa sejoale-joale tsa radar, tse nolofalletsang ho bona ka nepo, ho sebetsa ka nako ea nnete, le puisano e tšepahalang liindastering tse fapaneng. Bokhoni ba bona ba ho sebetsana le matšoao a maqhubu a phahameng ka tahlehelo e fokolang, ho kopantsoe le ho tšoarella le taolo e tsoetseng pele ea mocheso, e ba etsa hore e be tsa bohlokoa bakeng sa lits'ebetso tse joalo ka polokeho ea likoloi, ho tsamaea ka sefofane, le boiketsetso ba indasteri.

Ha o rala le ho etsa Radar PCB, ho sebelisana le moetsi oa PCB ea nang le boiphihlelo le ea tšepahalang ho netefatsa ts'ebetso e ntlafalitsoeng, khetho ea thepa le netefatso ea boleng. Ho tsetela ho li-PCB tsa Radar tsa boleng bo holimo ho netefatsa ho ts'epahala le ho nepahala ho hlokahalang bakeng sa litsamaiso tsa radar tsa moloko o latelang, ho matlafatsa liindasteri ho sebetsa ka bohlale, ka mokhoa o sireletsehileng le ka katleho.