Na nka Prototype PCB bakeng sa RF Amplifier: Tataiso e Felletseng

Tsebisa:

Ho etsa prototyping boto ea potoloho e hatisitsoeng (PCB) bakeng sa maqhubu a seea-le-moea (RF) amplifier ho ka bonahala e le mosebetsi o rarahaneng, empa ka tsebo e nepahetseng le lisebelisoa, e ka ba ts'ebetso e putsang. Hore na o motho ea chesehelang lisebelisoa tsa elektroniki kapa moenjiniere ea hloahloa,blog ena e ikemiselitse ho fana ka tataiso e felletseng mabapi le prototyping ea RF amplifier PCB. Ka mor'a ho bala sehlooho sena, u tla ba le kutloisiso e hlakileng ea mehato e amehang le lintlha tse lokelang ho nahanoa ha u etsa morero o joalo.

1. Utloisisa prototyping ea PCB:

Pele u kenella ho prototyping ea amplifier ea RF, hoa hlokahala ho ba le kutloisiso e felletseng le e tebileng ea prototyping ea PCB. PCB ke boto e entsoeng ka thepa e sireletsang mocheso eo likarolo tsa elektroniki le likhokahano tsa tsona li kenngoeng ho tsona. Prototyping e kenyelletsa ho rala le ho etsa li-PCB ho leka le ho ntlafatsa lipotoloho pele ho tlhahiso ea bongata.

2. Tsebo ea motheo ea li-amplifiers tsa RF:

Li-amplifiers tsa RF ke likarolo tsa bohlokoa lits'ebetsong tse fapaneng tsa elektroniki, ho kenyeletsoa lisebelisoa tsa puisano, lisebelisoa tsa khaso, le litsamaiso tsa radar. Pele o leka ho etsa mohlala oa PCB bakeng sa mofuta ona oa ts'ebeliso, ho bohlokoa ho utloisisa metheo ea li-amplifiers tsa RF. Li-amplifiers tsa RF li holisa mats'oao a maqhubu a seea-le-moea ha li ntse li netefatsa ho khopama le lerata le fokolang.

3. Litlhoko tsa moralo oa RF amplifier PCB:

Ho rala RF amplifier PCB ho hloka ho shebisisa lintlha tse fapaneng. Lintlha tse ling tsa bohlokoa tseo u lokelang ho li hopola ke:

Lisebelisoa tsa A. PCB le Layer Stackup:

Khetho ea lisebelisoa tsa PCB le stackup ea layer e na le phello e kholo ts'ebetsong ea amplifier ea RF. Lisebelisoa tse kang FR-4 li fana ka litharollo tse theko e tlaase bakeng sa lits'ebetso tse fokolang, ha liqapi tse phahameng tsa maqhubu li ka hloka li-laminate tse khethehileng tse nang le thepa e khethehileng ea dielectric.

b. Litsela tsa ho bapisa le ho tsamaisa li-impedance:

Ho fihlella papali ea impedance lipakeng tsa mekhahlelo ea potoloho ea amplifier ho bohlokoa bakeng sa ts'ebetso e nepahetseng. Sena se ka finyelloa ka tšebeliso ea likhoele tsa phetiso le marang-rang a tšoanang. Ketsiso e sebelisang lisebelisoa tsa software tse kang ADS kapa SimSmith e ka thusa haholo ho rala le ho hlophisa marang-rang a tšoanang hantle.

C. Grounding le RF Isolation:

Mekhoa e nepahetseng ea ho beha fatše le mekhoa ea ho itšehla thajana ea RF e bohlokoa ho fokotsa lerata le tšitiso. Menahano e joalo ka lifofane tsa fatše tse inehetseng, litšitiso tsa ho itšehla thajana, le ho sireletsa li ka ntlafatsa haholo ts'ebetso ea amplifier ea RF.

d. Sebopeho sa likarolo le ho tsamaisa RF:

Ho beoa ha likarolo tsa leano le ho latela tsela e hlokolosi ea RF ho bohlokoa ho fokotsa litlamorao tsa parasitic joalo ka crosstalk le stray capacitance. Ho latela mekhoa e metle, joalo ka ho boloka mesaletsa ea RF e le khuts'oane ka hohle kamoo ho ka khonehang le ho qoba ho kobeha ha 90-degree trace, ho ka thusa ho fihlela tšebetso e ntle.

4. Mokhoa oa ho etsa mohlala oa PCB:

Ho ipapisitsoe le ho rarahana le litlhoko tsa projeke, mekhoa e mengata e ka sebelisoa ho etsa mohlala oa RF amplifier PCB:

A. Etching ea DIY:

Etching ea DIY e kenyelletsa ho sebelisa li-laminate tsa koporo, litharollo tsa etching, le mekhoa e ikhethileng ea phetisetso ho theha PCB. Leha mokhoa ona o sebetsa bakeng sa meralo e bonolo, e kanna ea se be ntle kaha li-amplifiers tsa RF li na le maikutlo a ho kheloha ha bokhoni le liphetoho tsa impedance.

b. Litšebeletso tsa prototyping:

Litšebeletso tsa prototyping tsa profeshenale tsa PCB li fana ka litharollo tse potlakileng le tse tšepahalang haholoanyane. Litšebeletso tsena li fana ka lisebelisoa tse khethehileng, lisebelisoa tsa boleng le mekhoa e tsoetseng pele ea tlhahiso. Ho sebelisa lits'ebeletso tse joalo ho ka potlakisa RF amplifier prototyping iterations le ho ntlafatsa ho nepahala.

C. Lisebelisoa tsa ho etsisa:

Ho sebelisa lisebelisoa tsa papiso tse kang LTSpice kapa NI Multisim ho ka thusa mohatong oa pele oa moralo pele ho prototyping ea 'mele. Lisebelisoa tsena li u lumella ho etsisa boits'oaro ba li-circuits tsa amplifier, ho sekaseka litekanyetso tsa ts'ebetso le ho etsa liphetoho tse hlokahalang pele ho ts'ebetsong ea hardware.

5. Etsa liteko 'me u phete:

Hang ha prototype ea PCB ea RF amplifier e phethetsoe, ho bohlokoa ho etsa tlhahlobo e felletseng ho netefatsa ts'ebetso ea eona. Teko e ka kenyelletsa ho metha liparamente tsa bohlokoa joalo ka phaello, palo ea lerata, mola le botsitso. Ho itšetlehile ka liphello, ho ka 'na ha hlokahala liphetoho tse iphetang ho ntlafatsa moralo.

6. Qetello:

Ho hlahisa PCB bakeng sa amplifier ea RF ha se mosebetsi o bonolo, empa ka moralo o nepahetseng, tsebo le lisebelisoa, e ka finyelloa ka katleho. Ho utloisisa metheo ea prototyping ea PCB, li-amplifiers tsa RF, le lintlha tse ikhethileng tsa moralo ho bohlokoa. Ntle le moo, ho khetha mekhoa e nepahetseng ea prototyping le tlhahlobo e phethahetseng ho tla fella ka moralo o ntlafalitsoeng oa PCB bakeng sa projeke ea hau ea amplifier ea RF. Kahoo u seke oa tsilatsila ho kena leetong lena le monate la ho fetola mehopolo ea hau ea amplifier ea RF hore e be 'nete!

Qetellong, prototyping ea RF amplifier PCB e hloka motsoako oa boiphihlelo ba tekheniki, lintlha tse hlokolosi tsa moralo, le mokhoa o nepahetseng oa ho etsa mohlala. Ka ho latela mehato e boletsoeng tataisong ena, u ka qala leeto la hau la ho theha amplifier ea RF e sebetsang hantle haholo ka prototyping e atlehileng ea PCB.