Coaxial switch ndi njira yolumikizira ma electromechanical yomwe imagwiritsidwa ntchito posinthira ma siginecha a RF kuchokera kunjira ina kupita ku ina.Zosinthazi zimagwiritsidwa ntchito kwambiri pamasinthidwe amtundu omwe amafunikira pafupipafupi, mphamvu yayikulu komanso magwiridwe antchito apamwamba a RF.Amagwiritsidwanso ntchito nthawi zambiri pamakina oyesera a RF, monga tinyanga, kulumikizana kwa satellite, matelefoni, masiteshoni oyambira, ma avionics, kapena mapulogalamu ena omwe amafunikira kusintha ma siginecha a RF kuchokera kumalekezero ena kupita kwina.
Sinthani doko
Tikamalankhula za ma switch a coaxial, nthawi zambiri timati nPmT, ndiko kuti, n pole m kuponya, pomwe n ndi kuchuluka kwa madoko olowera ndipo m ndi kuchuluka kwa madoko otuluka.Mwachitsanzo, RF switch yokhala ndi doko limodzi lolowera ndi madoko awiri otuluka amatchedwa SPDT/1P2T.Ngati RF switch ili ndi cholowetsa chimodzi ndi zotuluka 14, tiyenera kusankha RF switch ya SP14T.
Sinthani magawo ndi mawonekedwe
Ngati chizindikirocho chiyenera kusinthidwa pakati pa mapeto awiri a antenna, tikhoza kudziwa nthawi yomweyo kusankha SPDT.Ngakhale kuchuluka kwa kusankha kwachepetsedwa kukhala SPDT, tifunikabe kukumana ndi magawo ambiri operekedwa ndi opanga.Tiyenera kuwerenga mosamala magawo ndi makhalidwe awa, monga VSWR, Ins.Loss, kudzipatula, pafupipafupi, mtundu wa cholumikizira, mphamvu yamagetsi, magetsi, mtundu wa kukhazikitsa, terminal, indication, control circuit ndi zina zomwe mungasankhe.
Mafupipafupi ndi mtundu wa cholumikizira
Tiyenera kudziwa kuchuluka kwa ma frequency a system ndikusankha kusintha koyenera koaxial malinga ndi pafupipafupi.Ma frequency opitilira ma switch a coaxial amatha kufikira 67GHz, ndipo masiwichi osiyanasiyana a coaxial amakhala ndi ma frequency osiyanasiyana.Nthawi zambiri, titha kuweruza ma frequency ogwiritsira ntchito coaxial switch molingana ndi mtundu wa cholumikizira, kapena mtundu wa cholumikizira umatsimikizira kuchuluka kwa ma switch a coaxial.
Kuti tigwiritse ntchito 40GHz, tiyenera kusankha cholumikizira cha 2.92mm.Zolumikizira za SMA zimagwiritsidwa ntchito kwambiri pama frequency angapo mkati mwa 26.5GHz.Zolumikizira zina zomwe zimagwiritsidwa ntchito kwambiri, monga N-mutu ndi TNC, zimatha kugwira ntchito pa 12.4GHz.Pomaliza, cholumikizira cha BNC chimatha kugwira ntchito pa 4GHz.
DC-6/8/12.4/18/26.5 GHz: SMA cholumikizira
DC-40/43.5 GHz: 2.92mm cholumikizira
DC-50/53/67 GHz: 1.85mm cholumikizira
Mphamvu yamphamvu
Muzosankha zathu zamapulogalamu ndi zida, mphamvu yamagetsi nthawi zambiri imakhala yofunika kwambiri.Kuchuluka kwa mphamvu kosinthira kungathe kupirira nthawi zambiri kumatsimikiziridwa ndi kapangidwe ka makina osinthira, zida zomwe zimagwiritsidwa ntchito, komanso mtundu wa cholumikizira.Zinthu zina zimachepetsanso mphamvu ya chosinthira, monga pafupipafupi, kutentha kwa ntchito ndi kutalika.
Voteji
Tadziwa kale magawo ambiri osinthira coaxial, ndipo kusankha kwa magawo otsatirawa kumatengera zomwe wogwiritsa ntchito amakonda.
Chosinthira coaxial chimakhala ndi koyilo yamagetsi ndi maginito, zomwe zimafunikira magetsi a DC kuti ayendetse chosinthira kupita kunjira yofananira ya RF.Mitundu yamagetsi yomwe imagwiritsidwa ntchito pofananiza ma switch coaxial ndi awa:
Mtundu wamagetsi a coil
5VDC 4-6VDC
12VDC 13-17VDC
24VDC 20-28VDC
28VDC 24-32VDC
Mtundu wa Drive
Posinthira, dalaivala ndi chipangizo chamagetsi chomwe chimasinthira ma RF malo olumikizirana nawo kuchokera pamalo amodzi kupita kwina.Pa ma switch ambiri a RF, valavu ya solenoid imagwiritsidwa ntchito polumikizana ndi ma RF.Tikasankha chosinthira, nthawi zambiri timakumana ndi mitundu inayi ya ma drive.
Failsafe
Ngati palibe magetsi owongolera kunja, njira imodzi imakhala yoyaka.Onjezani magetsi akunja ndikusintha kuti musankhe njira yofananira;Mphamvu yamagetsi yakunja ikatha, chosinthiracho chimangosintha kupita kunjira yomwe nthawi zonse imayendera.Chifukwa chake, ndikofunikira kupereka magetsi a DC mosalekeza kuti chosinthiracho chizisinthira kumadoko ena.
Latching
Ngati chosinthira cholumikizira chikuyenera kukhalabe chosinthira, chimayenera kubaya nthawi zonse mpaka chosinthira chamagetsi cha DC chikugwiritsidwa ntchito kuti chisinthe momwe chikusinthira.Choncho, Malo Latching pagalimoto akhoza kukhala mu boma otsiriza pambuyo perekani mphamvu kutha.
Latching Self Cut-off
Kusintha kumangofunika panopa panthawi yosintha.Kusintha kukamalizidwa, pali njira yotsekera yokha mkati mwa switch.Panthawiyi, kusinthaku kulibe mphamvu.Ndiko kunena kuti, kusinthana kumafuna mphamvu yakunja.Opaleshoniyo ikakhazikika (osachepera 50ms), chotsani magetsi akunja, ndipo chosinthiracho chimakhalabe panjira yotchulidwa ndipo sichidzasinthira kunjira yoyambirira.
Nthawi zambiri Open
Njira yogwirira ntchito iyi SPNT ndiyovomerezeka.Popanda mphamvu zamagetsi, njira zonse zosinthira sizikuyenda;Onjezani magetsi akunja ndikusintha kuti musankhe njira yotchulidwa;Mphamvu yamagetsi yakunja ikakhala yaying'ono, chosinthira chimabwerera kudera lomwe matchanelo onse sakuyenda.
Kusiyana pakati pa Latching ndi Failsafe
Mphamvu yowongolera ya Failsafe imachotsedwa, ndipo chosinthira chimasinthidwa kupita kunjira yomwe nthawi zambiri imatsekedwa;Mphamvu ya Latching control imachotsedwa ndipo imakhalabe panjira yosankhidwa.
Cholakwika chikachitika ndipo mphamvu ya RF ikusowa, ndipo chosinthira chiyenera kusankhidwa panjira inayake, kusintha kwa Failsafe kungaganizidwe.Njirayi ingathenso kusankhidwa ngati njira imodzi ikugwiritsidwa ntchito mofanana ndipo njira ina sikugwiritsidwa ntchito mofanana, chifukwa posankha njira wamba, chosinthira sichiyenera kupereka magetsi oyendetsa galimoto ndi amakono, omwe amatha kupititsa patsogolo mphamvu zamagetsi.
Nthawi yotumiza: Dec-03-2022