Lub kav hlau txais xov txuas yog ib qho khoom siv hluav taws xob siv los txuas cov khoom siv xov tooj cua zaus thiab cov cables. Nws lub luag haujlwm tseem ceeb yog xa cov teeb liab siab.
Lub connector muaj zoo heev impedance txuam cov yam ntxwv, uas ua kom ntseeg tau tias lub teeb liab xav txog thiab poob yog txo kom tsawg thaum kis tau tus mob ntawm connector thiab cable. Lawv feem ntau muaj cov khoom tiv thaiv zoo los tiv thaiv kev cuam tshuam sab nraud ntawm electromagnetic los ntawm kev cuam tshuam cov teeb liab zoo.
Cov kav hlau txais xov txuas ntau hom muaj xws li SMA, BNC, N-hom, TNC, thiab lwm yam, uas tsim nyog rau kev thov sib txawv.
Kab lus no tseem yuav qhia koj txog ntau yam uas siv cov khoom sib txuas:
Connector siv zaus
SMA Connector
SMA hom RF coaxial connector yog RF/microwave connector tsim los ntawm Bendix thiab Omni-Spectra nyob rau hauv lig 1950s. Nws yog ib qho ntawm cov khoom siv feem ntau siv thaum lub sijhawm ntawd.
Keeb kwm, SMA connectors tau siv rau ntawm 0.141 "semi-rigid coaxial cables, feem ntau yog siv hauv microwave daim ntawv thov hauv kev lag luam tub rog, nrog Teflon dielectric sau.
Vim tias SMA connector me me thiab tuaj yeem ua haujlwm ntawm cov zaus ntau dua (qhov ntau zaus yog DC mus rau 18GHz thaum sib txuas rau cov kab hluav taws xob ib nrab, thiab DC rau 12.4GHz thaum sib txuas rau cov cables hloov tau), nws tau txais kev nyiam sai. Qee lub tuam txhab tam sim no muaj peev xwm tsim SMA connectors nyob ib ncig ntawm DC ~ 27GHz. Txawm tias txoj kev loj hlob ntawm millimeter yoj connectors (xws li 3.5mm, 2.92mm) txiav txim siab txhua yam sib xws nrog SMA connectors.
SMA connector
BNC Connector
Lub npe tag nrho ntawm BNC connector yog Bayonet Nut Connector (snap-fit connector, no lub npe vividly piav txog cov duab ntawm no connector), muaj npe tom qab nws bayonet mounting locking mechanism thiab nws inventors Paul Neill thiab Carl Concelman.
yog ib qho kev sib txuas RF uas txo qis kev cuam tshuam yoj / poob. BNC connectors feem ntau yog siv nyob rau hauv tsawg mus rau ib nrab-frequency daim ntaub ntawv thiab yog dav siv nyob rau hauv wireless kev sib txuas lus systems, TVs, xeem cov cuab yeej, thiab RF electronic khoom.
BNC connectors kuj tau siv nyob rau hauv lub computer network thaum ntxov. BNC connector txhawb cov teeb liab zaus ntawm 0 mus rau 4GHz, tab sis nws kuj tseem tuaj yeem ua haujlwm txog 12GHz yog tias qhov tshwj xeeb high-zoo version tsim rau qhov zaus no siv. Muaj ob hom impedance, uas yog 50 ohms thiab 75 ohms. 50 ohm BNC connectors yog nrov dua.
N hom Connector
N-hom kav hlau txais xov txuas tau tsim los ntawm Paul Neal ntawm Bell Labs hauv xyoo 1940. Hom N connectors yog tsim los ua kom tau raws li qhov xav tau ntawm cov tub rog thiab aviation teb rau kev sib txuas radar systems thiab lwm yam khoom siv hauv xov tooj cua. N-hom connector yog tsim los nrog ib tug threaded kev twb kev txuas, muab zoo impedance txuam thiab shielding kev ua tau zoo, thiab yog haum rau siab zog thiab tsawg zaus daim ntaub ntawv.
Qhov ntau zaus ntawm Hom N connectors feem ntau yog nyob ntawm tus qauv tsim thiab kev tsim khoom. Feem ntau hais lus, N-hom connectors tuaj yeem npog qhov zaus ntawm 0 Hz (DC) txog 11 GHz txog 18 GHz. Txawm li cas los xij, cov khoom siv zoo N-hom txuas tuaj yeem txhawb nqa ntau zaus ntau dua, mus txog 18 GHz. Hauv kev siv tswv yim, N-hom connectors feem ntau yog siv nyob rau hauv tsawg mus rau nruab nrab zaus siv, xws li kev sib txuas lus wireless, tshaj tawm, satellite kev sib txuas lus thiab radar systems.
N hom connector
TNC Connector
Lub TNC txuas (Threaded Neill-Concelman) tau tsim los ntawm Paul Neill thiab Carl Concelman thaum xyoo 1960s. Nws yog ib qho kev txhim kho ntawm BNC connector thiab siv txoj kev sib txuas threaded.
Cov yam ntxwv impedance yog 50 ohms, thiab qhov kev ua haujlwm zoo tshaj plaws yog 0-11GHz. Hauv microwave zaus band, TNC connectors ua tau zoo dua BNC connectors. Nws muaj cov yam ntxwv ntawm kev poob siab muaj zog, kev ntseeg siab, zoo heev txhua yam thiab hluav taws xob, thiab lwm yam, thiab yog siv dav hauv cov khoom siv hauv xov tooj cua thiab cov cuab yeej hluav taws xob los txuas RF coaxial cables.
3.5 hli Connector
Lub 3.5mm connector yog xov tooj cua zaus coaxial connector. Sab hauv txoj kab uas hla ntawm tus neeg xyuas pib yog 3.5 hli, tus yam ntxwv impedance yog 50Ω, thiab kev sib txuas mechanism yog 1/4-36UNS-2 nti xov.
Nyob rau hauv nruab nrab-1970s, American Hewlett-Packard thiab Amphenol tuam txhab uas muag (tsuas yog tsim los ntawm HP Company, thiab thaum ntxov zus tau tej cov Amphenol Company) launched ib tug 3.5mm connector, uas muaj ib tug khiav hauj lwm zaus ntawm mus txog 33GHz thiab yog ntxov tshaj plaws. xov tooj cua zaus uas yuav siv tau nyob rau hauv millimeter yoj band. Ib qho ntawm cov coaxial connectors.
Piv nrog SMA connectors (xws li Southwest Microwave's "Super SMA"), 3.5mm connectors siv cua dielectric, muaj thicker txheej conductors tshaj SMA connectors, thiab muaj zoo mechanical zog. Yog li ntawd, tsis tsuas yog cov hluav taws xob ua tau zoo dua li ntawm SMA connectors, tab sis cov neeg kho tshuab durability thiab kev ua tau zoo repeatability kuj siab dua li ntawm SMA connectors, ua rau nws tsim nyog rau siv nyob rau hauv kev lag luam kev xeem.
2.92 hli Connector
Lub 2.92mm connector, qee cov tuam txhab hu nws 2.9mm los yog K-hom connector, thiab qee cov tuam txhab hu nws SMK, KMC, WMP4 connector, thiab lwm yam, yog lub xov tooj cua zaus coaxial connector nrog tus neeg xyuas pib sab hauv txoj kab uas hla ntawm 2.92mm. Yam ntxwv Lub impedance yog 50Ω thiab kev sib txuas mechanism yog 1/4-36UNS-2 nti xov. Nws cov qauv zoo ib yam li 3.5mm connector, tsuas yog me dua.
Xyoo 1983, Wiltron senior engineer William.Old.Field tau tsim ib qho tshiab 2.92mm / K-type connector raws li kev sau thiab kov yeej yav dhau los qhia txog millimeter yoj connectors (K-hom connector yog lub cim lag luam). Sab hauv tus neeg xyuas pib txoj kab uas hla ntawm qhov txuas no yog 1.27mm thiab tuaj yeem sib xyaw nrog SMA connectors thiab 3.5mm connectors.
Lub 2.92mm connector muaj hluav taws xob ua tau zoo nyob rau hauv ntau zaus (0-46) GHz thiab yog mechanically sib xws nrog SMA connectors thiab 3.5mm connectors. Yog li ntawd, nws sai sai tau los ua ib qho ntawm feem ntau siv mmWave connectors.
2.4 hli Connector
Txoj kev loj hlob ntawm 2.4mm connector tau koom 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 me ntawm 3.5mm connector, yog li muaj qhov nce ntxiv hauv qhov ntau zaus. Cov connector no tau siv dav hauv 50GHz systems thiab tuaj yeem ua haujlwm tau txog 60GHz. Yuav kom daws tau qhov teeb meem uas SMA thiab 2.92mm connectors muaj kev puas tsuaj, 2.4mm connector yog tsim los tshem tawm cov kev tsis txaus no los ntawm kev nce lub thickness ntawm cov phab ntsa sab nrauv ntawm lub connector thiab txhawb cov poj niam pins. Qhov kev tsim tshiab no tso cai rau 2.4mm connector ua tau zoo nyob rau hauv high-frequency applications.
Txoj kev loj hlob ntawm cov kav hlau txais xov txuas tau hloov zuj zus los ntawm cov qauv xov yooj yim mus rau ntau hom kev ua haujlwm siab. Nrog rau kev nce qib ntawm kev siv thev naus laus zis, cov khoom txuas txuas ntxiv mus nrhiav cov yam ntxwv ntawm qhov me me, ntau zaus thiab bandwidth loj dua kom tau raws li qhov hloov pauv ntawm kev sib txuas lus wireless. Txhua connector muaj nws tus yam ntxwv thiab zoo nyob rau hauv txawv daim ntawv thov scenarios, yog li xaiv txoj cai kav hlau txais xov connector yog ib qho tseem ceeb heev los xyuas kom meej qhov zoo thiab stability ntawm lub teeb liab kis tau tus mob.
Post lub sij hawm: Dec-26-2023
