Lub qhov txuas antenna yog ib lub qhov txuas hluav taws xob siv los txuas cov khoom siv zaus xov tooj cua thiab cov cables. Nws lub luag haujlwm tseem ceeb yog xa cov teeb liab zaus siab.
Lub connector muaj cov yam ntxwv zoo heev rau kev sib phim impedance, uas ua kom ntseeg tau tias qhov kev cuam tshuam thiab kev poob ntawm lub teeb liab raug txo qis thaum lub sijhawm xa mus ntawm lub connector thiab lub cable. Lawv feem ntau muaj cov khoom tiv thaiv zoo los tiv thaiv kev cuam tshuam electromagnetic sab nraud los ntawm kev cuam tshuam rau qhov zoo ntawm lub teeb liab.
Cov hom txuas antenna feem ntau suav nrog SMA, BNC, N-hom, TNC, thiab lwm yam, uas tsim nyog rau cov kev xav tau ntawm daim ntawv thov sib txawv.
Tsab xov xwm no tseem yuav qhia koj txog ntau yam khoom siv sib txuas uas siv ntau:
Kev siv zaus ntawm lub connector
SMA Txuas
Lub SMA hom RF coaxial connector yog lub RF/microwave connector tsim los ntawm Bendix thiab Omni-Spectra thaum xyoo 1950. Nws yog ib qho ntawm cov connectors siv ntau tshaj plaws thaum lub sijhawm ntawd.
Chiv thawj, SMA connectors tau siv rau ntawm 0.141 ″ semi-rigid coaxial cables, feem ntau yog siv rau hauv cov ntawv thov microwave hauv kev lag luam tub rog, nrog Teflon dielectric sau.
Vim tias qhov SMA connector me me thiab tuaj yeem ua haujlwm ntawm cov zaus siab dua (qhov zaus ntau yog DC rau 18GHz thaum sib txuas nrog cov cables semi-rigid, thiab DC rau 12.4GHz thaum sib txuas nrog cov cables flexible), nws tau txais kev nyiam sai sai. Qee lub tuam txhab tam sim no muaj peev xwm tsim cov SMA connectors nyob ib puag ncig DC ~ 27GHz. Txawm tias kev tsim cov millimeter wave connectors (xws li 3.5mm, 2.92mm) xav txog kev sib raug zoo ntawm cov khoom siv nrog SMA connectors.
SMA txuas
BNC Txuas
Lub npe tag nrho ntawm BNC connector yog Bayonet Nut Connector (snap-fit connector, lub npe no piav qhia meej txog cov duab ntawm lub connector no), muab lub npe tom qab nws lub bayonet mounting locking mechanism thiab nws cov neeg tsim khoom Paul Neill thiab Carl Concelman.
yog ib qho RF connector uas txo qhov kev cuam tshuam/kev poob ntawm nthwv dej. BNC connectors feem ntau siv rau hauv cov ntawv thov zaus qis mus rau nruab nrab thiab siv dav hauv cov kab ke sib txuas lus wireless, TVs, cov khoom siv kuaj, thiab cov khoom siv hluav taws xob RF.
Cov khoom sib txuas BNC kuj tau siv rau hauv cov tes hauj lwm computer thaum ntxov. Lub khoom sib txuas BNC txhawb nqa cov zaus teeb liab txij li 0 txog 4GHz, tab sis nws kuj tuaj yeem ua haujlwm txog 12GHz yog tias siv cov qauv zoo tshwj xeeb uas tsim rau qhov zaus no. Muaj ob hom impedance yam ntxwv, uas yog 50 ohms thiab 75 ohms. Cov khoom sib txuas BNC 50 ohm nrov dua.
N hom txuas
Lub N-hom antenna connector tau tsim los ntawm Paul Neal ntawm Bell Labs hauv xyoo 1940. Hom N connectors tau tsim thawj zaug los ua kom tau raws li qhov xav tau ntawm cov tub rog thiab aviation teb rau kev txuas radar systems thiab lwm yam khoom siv xov tooj cua zaus. Lub N-hom connector yog tsim los nrog kev sib txuas threaded, muab kev sib phim impedance zoo thiab kev ua haujlwm tiv thaiv, thiab yog tsim rau lub zog siab thiab qis zaus daim ntawv thov.
Qhov ntau zaus ntawm Hom N connectors feem ntau nyob ntawm tus qauv tsim thiab kev tsim khoom tshwj xeeb. Feem ntau hais lus, N-hom connectors tuaj yeem npog qhov ntau zaus ntawm 0 Hz (DC) txog 11 GHz txog 18 GHz. Txawm li cas los xij, cov N-hom connectors zoo tuaj yeem txhawb nqa qhov ntau zaus siab dua, ncav cuag ntau dua 18 GHz. Hauv kev siv ua haujlwm, N-hom connectors feem ntau yog siv rau hauv cov ntawv thov zaus qis mus rau nruab nrab, xws li kev sib txuas lus wireless, kev tshaj tawm, kev sib txuas lus satellite thiab radar systems.
N hom txuas
TNC Txuas
Lub TNC connector (Threaded Neill-Concelman) tau tsim los ntawm Paul Neill thiab Carl Concelman thaum ntxov xyoo 1960. Nws yog ib qho version zoo dua ntawm BNC connector thiab siv txoj kev sib txuas threaded.
Tus yam ntxwv impedance yog 50 ohms, thiab qhov zaus ua haujlwm zoo tshaj plaws yog 0-11GHz. Hauv qhov microwave frequency band, TNC connectors ua haujlwm zoo dua li BNC connectors. Nws muaj cov yam ntxwv ntawm kev tiv thaiv kev poob siab, kev ntseeg siab siab, cov khoom siv kho tshuab thiab hluav taws xob zoo heev, thiab lwm yam, thiab siv dav hauv cov khoom siv xov tooj cua thiab cov cuab yeej hluav taws xob los txuas RF coaxial cables.
3.5 hli Txuas
Lub qhov txuas 3.5 hli yog lub xov tooj cua zaus coaxial connector. Lub txoj kab uas hla sab hauv ntawm lub xov tooj sab nraud yog 3.5 hli, qhov impedance yam ntxwv yog 50Ω, thiab lub tshuab txuas yog 1/4-36UNS-2 nti xov.
Nyob rau nruab nrab xyoo 1970, cov tuam txhab American Hewlett-Packard thiab Amphenol (feem ntau yog tsim los ntawm HP Company, thiab kev tsim khoom thaum ntxov tau ua los ntawm Amphenol Company) tau tsim tawm 3.5mm connector, uas muaj zaus ua haujlwm txog li 33GHz thiab yog lub xov tooj cua zaus thaum ntxov uas tuaj yeem siv tau hauv millimeter wave band. Ib qho ntawm cov coaxial connectors.
Piv nrog rau cov khoom sib txuas SMA (xws li Southwest Microwave's "Super SMA"), cov khoom sib txuas 3.5 hli siv cov cua dielectric, muaj cov hlau sab nraud tuab dua li cov khoom sib txuas SMA, thiab muaj lub zog kho tshuab zoo dua. Yog li ntawd, tsis yog tsuas yog kev ua haujlwm hluav taws xob zoo dua li cov khoom sib txuas SMA xwb, tab sis kev ua haujlwm ruaj khov thiab kev ua haujlwm rov ua dua kuj siab dua li cov khoom sib txuas SMA, ua rau nws tsim nyog siv rau hauv kev lag luam kuaj.
2.92 hli Txuas
Lub 2.92mm connector, qee cov chaw tsim khoom hu nws 2.9mm lossis K-type connector, thiab qee cov chaw tsim khoom hu nws SMK, KMC, WMP4 connector, thiab lwm yam, yog lub xov tooj cua zaus coaxial connector nrog lub sab nraud conductor sab hauv txoj kab uas hla ntawm 2.92mm. Cov yam ntxwv Lub impedance yog 50Ω thiab lub tshuab txuas yog 1/4-36UNS-2 nti xov. Nws cov qauv zoo ib yam li 3.5mm connector, tsuas yog me dua.
Xyoo 1983, Wiltron tus kws ua haujlwm laus William.Old.Field tau tsim ib lub qhov txuas tshiab 2.92mm/K-type raws li kev sau thiab kov yeej cov qhov txuas millimeter wave uas tau tsim ua ntej (K-type connector yog lub cim lag luam). Lub taub ntawm lub qhov txuas no yog 1.27mm thiab tuaj yeem sib txuas nrog SMA connectors thiab 3.5mm connectors.
Lub qhov txuas 2.92 hli muaj kev ua haujlwm hluav taws xob zoo heev hauv qhov ntau zaus (0-46) GHz thiab nws sib xws nrog SMA cov khoom txuas thiab 3.5 hli cov khoom txuas. Yog li ntawd, nws sai sai tau los ua ib qho ntawm cov khoom txuas mmWave uas siv dav tshaj plaws.
2.4 hli Txuas
Kev tsim kho ntawm 2.4mm connector tau ua ke los ntawm HP (tus thawj coj ntawm Keysight Technologies), Amphenol thiab M/A-COM. Nws tuaj yeem xav tias yog ib qho me dua ntawm 3.5mm connector, yog li muaj qhov nce ntxiv ntawm qhov siab tshaj plaws. Lub connector no siv dav hauv 50GHz systems thiab tuaj yeem ua haujlwm txog 60GHz. Txhawm rau daws qhov teeb meem uas SMA thiab 2.92mm connectors yooj yim puas tsuaj, 2.4mm connector yog tsim los tshem tawm cov kev tsis txaus no los ntawm kev ua kom tuab ntawm phab ntsa sab nraud ntawm lub connector thiab txhawb nqa cov poj niam pins. Qhov kev tsim tshiab no tso cai rau 2.4mm connector ua haujlwm tau zoo hauv cov ntawv thov siab.
Kev tsim cov khoom siv antenna tau hloov zuj zus los ntawm kev tsim cov xov yooj yim mus rau ntau hom kev sib txuas ua haujlwm siab. Nrog rau kev nce qib ntawm thev naus laus zis, cov khoom siv txuas ntxiv mus nrhiav cov yam ntxwv ntawm qhov me me, zaus siab dua thiab bandwidth loj dua kom tau raws li qhov xav tau hloov pauv ntawm kev sib txuas lus wireless. Txhua lub connector muaj nws tus kheej cov yam ntxwv thiab qhov zoo hauv cov xwm txheej thov sib txawv, yog li xaiv lub antenna connector zoo yog qhov tseem ceeb heev kom ntseeg tau qhov zoo thiab kev ruaj khov ntawm kev xa xov.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-26-2023
