Theknoloji ea sefe ea Millimeter-wave (mmWave) ke karolo ea bohlokoa ho nolofatseng puisano e kholo ea waelese ea 5G, leha ho le joalo e tobane le liphephetso tse ngata mabapi le litekanyo tsa 'mele, mamello ea tlhahiso le botsitso ba mocheso.
Sebakeng sa puisano e tloaelehileng ea waelese ea 5G, tlhokomelo ea nakong e tlang e tla fetohela ho sebeliseng maqhubu a fetang 20 GHz ka har'a spectrum ea mmWave ho ntlafatsa bokhoni ba bandwidth, qetellong ho eketsa sekhahla sa phetisetso.
Ho tsebahala hantle hore ka lebaka la maqhubu a tsona a phahameng le tahlehelo e kholo ea tsela, matšoao a mmWave a hloka li-antenna tse nyane. Li-antenna tsena li kopantsoe hammoho ho etsa li-antenna tse nang le mahlaseli a masesaane, tse nang le phaello e phahameng.
Bothata bo bong ba mantlha moralong oa sefe bo ho ikamahanya le litekanyo tsa antenna, haholo-holo bakeng sa li-filter tse nang le maqhubu a phahameng. Ho feta moo, mamello ea tlhahiso le botsitso ba mocheso oa li-filter li ama haholo karolo e 'ngoe le e 'ngoe ea moralo le tlhahiso ea sehlahisoa.
Litšitiso tsa Boholo ho Theknoloji ea mmWave
Litsamaisong tsa setso tsa li-antenna array, sebaka se pakeng tsa likarolo se tlameha ho ba ka tlase ho halofo ea bolelele ba leqhubu (λ/2) ho qoba tšitiso. Molao-motheo ona o sebetsa ka ho lekana ho li-antenna tse etsang mahlaseli a 5G. Mohlala, antenna e sebetsang sehlopheng sa 28 GHz e na le sebaka sa likarolo sa hoo e ka bang 5 mm. Ka lebaka leo, likarolo tse ka har'a li-array li tlameha ho ba nyane haholo.
Di-array tse nang le mekhahlelo tse sebediswang ditshebedisong tsa mmWave hangata di sebedisa moralo wa sebopeho se planar, jwalo ka ha ho bontshitswe ka tlase, moo di-antenna (dibaka tse tshehla) di kentsweng hodima diboto tsa potoloho tse hatisitsweng (di-PCB) (dibaka tse tala), mme diboto tsa potoloho (dibaka tse putswa) di ka hokelwa ka ho otloloha ho boto ya antenna.
Sebaka sa diboto tsena tsa potoloho se se se le senyane haholo, empa mahlale a ntseng a hlaha a ntse a hlahloba meaho e bataletseng e menyenyane le ho feta, e leng se bolelang hore difilthara le diboloko tse ding tsa potoloho di hloka ho ba nyane haholo hore di kenngwe ka ho toba ka morao ho PCB ya antenna.
Tšusumetso ea Mamello ea Tlhahiso ho Li-filters
Ka lebaka la bohlokoa ba lifilthara tsa mmWave, mamello ea tlhahiso e bapala karolo ea bohlokoa, e susumetsa ts'ebetso ea lifilthara le litšenyehelo.
Ho batlisisa lintlha tsena haholoanyane, re bapisitse mekhoa e meraro e fapaneng ea tlhahiso ea li-filter tsa 26 GHz:
Tafole e latelang e hlalosa mamello e tloaelehileng e feteletseng e fumanoang tlhahisong:
Tšusumetso ea Mamello ho Li-Filter tsa PCB Microstrip
Jwalo ka ha ho bontshitswe ka tlase, moralo wa sefe ya microstrip o a bontshwa.
Mokhahlelo oa ketsiso ea moralo o tjena:
Ho ithuta phello ea mamello ho sefe sena sa microstrip sa PCB, ho khethiloe mekhoa e robeli e ka bang teng ea mamello e feteletseng, e leng se senolang liphapang tse hlokomelehang.
Tšusumetso ea Mamello ho Li-Filter tsa PCB Stripline
Moralo oa sefe ea stripline, o bontšitsoeng ka tlase, ke sebopeho sa mekhahlelo e supileng se nang le liboto tsa dielectric tsa RO3003 tsa 30 mil holimo le tlase.
Ho roll-off ha ho na moepa o moholo hakaalo, mme coefficient ya khutlonnetsepa e tlase ho feta ya microstrip ka lebaka la ho se be le di-zero haufi le passband, e leng se fellang ka tshebetso e sa lekanang ya harmonic maqhubung a hole.
Ka ho tšoanang, tlhahlobo ea mamello e bontša kutloisiso e betere ha e bapisoa le mela ea microstrip.
Qetello
Hore puisano ya waelese ya 5G e fihlelle lebelo le potlakileng, theknoloji ya sefe ya mmWave e sebetsang maqhubung a 20 GHz kapa ho feta e bohlokwa. Leha ho le jwalo, diphephetso di ntse di le teng mabapi le boholo ba mmele, botsitso ba mamello le mathata a tlhahiso.
Kahoo, tšusumetso ea mamello meralong e tlameha ho nahanoa ka hloko. Ho totobetse hore li-filter tsa SMT li bontša botsitso bo boholo ho feta li-filter tsa microstrip le stripline, e leng se bontšang hore li-filter tsa SMT tse kenngoang holim'a metsi li ka hlaha e le khetho e kholo bakeng sa puisano ea mmWave ea nakong e tlang.
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Nako ea poso: Phupu-17-2024