RF le microwave PCB li bile teng ka lilemo tse ‘maloa’ me li sebelisoa haholo indastering ea elektroniki. Li ratoa haholo ‘me li etselitsoe ho sebetsa ka lipontšo ho MHZ ho gigahertz frequency range. Li-PCBS tsena li loketse ha ho tluoa lits’ebetsong tsa marang-rang le likhokahano. Ho na le mabaka a mangata a hobaneng baetsi ba PCB ba khothaletsa liboto tsa RF le microwave bakeng sa lits’ebetso tsa marang-rang. O batla ho tseba hore na ke eng? Sengoloa sena se bua ka eona taba eo.

Kakaretso ea RF le microwave PCB

Ka tloaelo, li-board tsa RF le microwave li etselitsoe lits’ebetso bohareng ba maqhubu a phahameng kapa ho feta 100 MHz. Ho thata ho rala lipolanka tsena ka lebaka la mathata a taolo ho tloha ho kutlo ea lets’oao ho isa ho ho laola litšobotsi tsa phetisetso ea mocheso. Leha ho le joalo, mathata ana ha a fokolise bohlokoa ba ona. Ts’ebeliso ea lisebelisoa tse nang le thepa e joalo ka khaello e tlase ea dielectric, coefficient e phahameng ea katoloso ea mocheso (CTE) le tahlehelo e tlase ea Angle tangent e thusa ho nolofatsa ts’ebetso ea kaho. Lisebelisoa tsa PCB tse atisang ho sebelisoa ho aha RF le microwave PCBS ke li-hydrocarbon tse nang le letsopa, PTFE e nang le likhoele tse lohiloeng kapa tsa microglass, FEP, LCP, Rogers RO laminates, ts’ebetso e phahameng ea FR-4, jj.

Melemo e fapaneng ea RF le microwave PCBS

Rf le microwave PCBS li fana ka melemo e mengata. Kahoo, a re ke re li shebeng kaofela.

Lisebelisoa tse nang le CTE e tlase li thusa meaho ea PCB hore e lule e tsitsitse maemong a phahameng. Ho feta moo, lisebelisoa tsena li etsa hore li-multilayers li hokahane habonolo.

Ka lebaka la ts’ebeliso ea lisebelisoa tse tlase tsa CTE, baenjiniere ba PCB ba ka hokahanya habonolo likarolo tse ngata tsa poleiti hore e be meaho e rarahaneng.

Litsenyehelo tsa kopano ea RF le microwave PCBS li ka fokotsoa ka sebopeho sa mekato e mengata. Sebopeho sena se boetse se kenya letsoho ts’ebetsong e ntle ea PCB.

Tsitsitseng Er le tahlehelo e tlase ea tangent e tsamaisa phetiso e potlakileng ea matšoao a maqhubu a phahameng ka li-PCBS tsena. Ho feta moo, impedance e tlase nakong ea phetisetso ena.

Baenjiniere ba PCB ba ka beha likarolo tse hantle tsa sekontiri hantle ka sekepeng, tse thusang ho fihlela meralo e rarahaneng.

Ka hona, melemo ena e etsa hore RF le microwave PCBS li loketse lits’ebetso tse fapaneng ho kenyeletsoa phetiso ea waelese le li-network tse ling tsa khomphutha.