Boto ea potoloho ea microwave le RF PCB li hloka ho ts’oaroa ka mokhoa o ikhethileng oo balekane ba hau ba kamehla ba tlhahiso ba ka se khoneng ho o sebetsana. Re ka sebelisa li-laminate tse maqhubu a phahameng ka tsamaiso e thata le taolo ea boleng bo holimo ho rala le ho nts’etsapele RF PCB ea hau ho netefatsa ts’ebetso e tloaelehileng.

Rayming e se e le mofani oa thepa ea li-microwave ea PCB lefatšeng ka bophara, a shebile laminates tsa HF PCB. Rogers PCB, Teflon PCB, Arlon PCB, nka etsa lisebelisoa tseo u li hlokang.

RF PCB

< p&gt; U ka itšetleha ka lihlahisoa tsa litsebi tsa Rayming hobane re na le sehlopha, lisebelisoa le boiphihlelo ba ho sebetsana le lisebelisoa tse laminated tse nang le litlhoko tse ikhethang tse amanang le mochini, mocheso, motlakase le likarolo tse ling tse ikhethang tsa ts’ebetso ho feta lisebelisoa tse tloaelehileng tsa FR-4.

Beha lihlahisoa tsa hau matsohong a bolokehileng ka ho ts’epa morekisi oa PCB ea microwave ea holimo ea shebaneng le litlhoko tse tiileng tsa mamello mme a fana ka tšehetso eo u e hlokang ka nako, nako le nako.

Utloisisa hore na hf PCBS ke eng,

1. Hf PCBS kapa letsetsa microwave PCBS / RF PCBS / RF PCBS li sebelisoa haholo ho likhokahanyo tse se nang mohala, marang-rang a se nang mohala le likhokahano tsa sathalaete, haholo-holo marang-rang a 3G, ho eketsa tlhoko ea mmaraka ea lihlahisoa ho HF PCBS. Kajeno, tlhoko ea meralo ea li-microwave ea PCB e ntse e eketseha, ‘me phihlello ea data e lebelo le phahameng (e maqhubu a phahameng) e fetoha tlhokahalo ea mebaraka e mengata joalo ka ts’ireletso, sebaka sa marulelo le marang-rang. Litlhoko tse fetohang tsa mmaraka li ntse li tsoela pele ho tsamaisa nts’etsopele ea liboto tsa potoloho tse hatisitsoeng khafetsa. Joalo ka li-radio tsa 50+ GHz microwave kapa sistimi ea moea ea ts’ireletso, e ka amohela li-PCBS tse se nang halogen.

2. RF PCB le Maqhubu a phahameng a PCBS a entsoe ka polytetrafluoroethylene (PTFE PCB), li-fluoropolymers tse tlatsitsoeng ka letsopa kapa lisebelisoa tsa hydrocarbon tsa thermosetting tse nang le thepa e ntlafalitsoeng ea dielectric. Boitsebiso bo na le khaello e tlase ea dielectric ea 2.0-3.8, leseli le tlase la tahlehelo le litšobotsi tse ntle haholo tsa tahlehelo, empa e boetse e na le ts’ebetso e ntle, mocheso o phahameng oa phetoho ea khalase, sekhahla se tlase haholo sa hydrophilic, botsitso bo botle ba mocheso. The coefficient katoloso ya PTFE lintho tse bonahalang PCB e tšoanang le ea koporo, e leng se etsang lintho tse bonahalang tse ba le o babatsehang tlhakore botsitso.

Khampani ea 3.Panda PCB e ekelitse lisebelisoa tsa tlhahiso le matsete a r & d. Lilemong tse ‘maloa tse fetileng tšimong ea nts’etsopele ea HF PCB, bakeng sa bareki ba tsoang lefats’eng lohle ho kopana le nts’etsopele ea mmaraka oa RF PCB, re na le boiphihlelo bo pharalletseng ho hlahiseng PTFE PCB bakeng sa liboto tse fapaneng tsa HF, e ka potlakela ho mohlala le tlhahiso ea molumo. Bafani ba rona ba thepa ea teflon ka kakaretso ba kenyelletsa: Rogers PCB, Nelco PCB, Taconic PCB, Arlon PCB.

Tataiso e akaretsang ea liboto tsa potoloho tsa RF

Moralo oa RF le Mircowave PCB

PCBS ea sejoale-joale e kopanya mefuta e fapaneng ea mahlale a dijithale le a tsoakiloeng, kahoo moralo le moralo li ba thata le ho feta, haholo ha rf le microwave li kopantsoe bakeng sa likaroloana tse nyane. Hore na o sebetsa le rona, morekisi e mong oa RF PCB, kapa o iketsetsa RF PCB ea hau, ho na le lintlha tse ‘maloa.

Ea pele ke hore mokoloko oa maqhubu a RF hangata e le 500 MHz ho 2 GHz, empa meralo e kaholimo ho 100 MHz hangata e nkuoa e le RF PCBS. Haeba o ka feta 2 GHz, o maemong a maqhubu a microwave.

Lisebelisoa tsa RF le microwave PCB li na le liphapang tse kholo – phapang lipakeng tsa bona le potoloho ea hau ea standard digital kapa analog.

Ka bokhutšoanyane, li-board tsa potoloho tsa RF li sebelisa lipontšo tsa analog maemong a holimo haholo tlhahong. Letšoao la hau la RF le ka ba maemong afe kapa afe a motlakase le a hona joale ka nako efe kapa efe, ha feela le le lipakeng tsa meeli ea hau e tlase le e phahameng.

RF le li-microwave tse hatisitsoeng li-board li tsamaisa lipontšo ka lebelo le le leng le ka har’a sehlopha se itseng sa maqhubu. Metlhotlo ea bandpass e sebelisetsoa ho romella matšoao ho “band of interest” le ho sefa lipontšo life kapa life kantle ho mokoloko oo oa maqhubu. Sehlopha se ka ba moqotetsane kapa se pharaletseng mme se ka fetisoa ke motho ea tsamaisang maqhubu a phahameng haholo.