Kwiinkqubo zovavanyo lwe-microwave, iiswitshi ze-RF kunye ne-microwave zisetyenziswa ngokubanzi kumzila womqondiso phakathi kwezixhobo kunye nee-DUTs.Ngokubeka iswitshi kwinkqubo ye-matrix yokutshintsha, imiqondiso evela kwizixhobo ezininzi inokusiwa kwi-DUT enye okanye ngaphezulu.Oku kuvumela iimvavanyo ezininzi ukuba zigqitywe kusetyenziswa isixhobo esisodwa sokuvavanya ngaphandle kwesidingo sokuqhawula rhoqo kunye nokudibanisa kwakhona.Kwaye inokufikelela kwi-automation yenkqubo yovavanyo, ngaloo ndlela iphucula impumelelo yovavanyo kwiindawo zokuvelisa ngobuninzi.
Iimpawu eziphambili zokusebenza zamacandelo okutshintsha
Imveliso yanamhlanje enesantya esiphezulu ifuna ukusetyenziswa komgangatho ophezulu wokusebenza kunye namacandelo okutshintsha okuphindaphindwayo kwizixhobo zokuvavanya, ujongano lokutshintsha, kunye neenkqubo zovavanyo oluzenzekelayo.Olu tshintsho luchazwa ngokwezi mpawu zilandelayo:
Uluhlu lokuphindaphinda
Uluhlu lwamaza e-RF kunye nosetyenziso lwe-microwave luqala kwi-100 MHz kwii-semiconductors ukuya kuma-60 GHz kunxibelelwano lwesathelayithi.Izihlomelo zovavanyo ezinamabhendi amaza okusebenza abanzi zonyuse ukuguquguquka kwenkqubo yovavanyo ngenxa yokwandiswa kokugubungela amaza.Kodwa i-frequency ebanzi yokusebenza inokuchaphazela ezinye iiparamitha ezibalulekileyo.
Ilahleko yokufaka
Ilahleko yokufaka nayo ibalulekile kuvavanyo.Ilahleko enkulu kune-1 dB okanye i-2 dB iya kunciphisa izinga eliphezulu lomqondiso, ukwandisa ixesha lokunyuka nokuwa.Kwiindawo zokusetyenziswa kwe-high-frequency, ukuhanjiswa kwamandla okusebenzayo ngamanye amaxesha kufuna ixabiso eliphezulu, ngoko ke ilahleko eyongezelelweyo eyaziswa ngokutshintshwa kwe-electromechanical kwindlela yokuguqula kufuneka icuthwe kangangoko kunokwenzeka.
Buyisela ilahleko
Ilahleko yembuyekezo ibonakaliswa kwi-dB, engumlinganiselo we-voltage stand wave ratio (VSWR).Ilahleko yokubuyisela ibangelwa kukungahambelani kwe-impedance phakathi kweesekethe.Kuluhlu lwefrikhwensi ye-microwave, iimpawu zemathiriyeli kunye nobukhulu bamacandelo othungelwano badlala indima ebalulekileyo ekumiseleni ukuhambelana kokumelana okanye ukungalingani okubangelwa ziziphumo zokusasaza.
Ukuhambelana nokusebenza
Ukuhambelana kokusebenza kwelahleko yokufakela okuphantsi kunokunciphisa imithombo yempazamo engahleliweyo kwindlela yokulinganisa, ngaloo ndlela iphucula ukuchaneka komlinganiselo.Ukungaguquguquki kunye nokuthembeka kokusebenza kokutshintsha kuqinisekisa ukuchaneka komlinganiselo, kunye nokunciphisa iindleko zobunini ngokwandisa imijikelo yokulinganisa kunye nokunyusa ixesha lokusebenza kwenkqubo yokuvavanya.
Ukubekwa wedwa
Ukwahlula liqondo lokuthomalalisa imiqondiso engenamsebenzi efunyenwe kwizibuko lomdla.Kwiifrikhwensi eziphezulu, ukuba wedwa kubaluleke kakhulu.
VSWR
I-VSWR yokutshintsha inqunywe yimilinganiselo yomatshini kunye nokunyamezela kokuvelisa.I-VSWR ehluphekileyo ibonisa ubukho bokubonakaliswa kwangaphakathi okubangelwa ukungahambi kakuhle kwe-impedance, kunye nezibonakaliso ze-parasitic ezibangelwa ezi zibonakaliso zingakhokelela ekuphazamiseni isimboli sokuphazamiseka (ISI).Ezi zibonakalisi ziqhele ukwenzeka kufutshane nesinxibelelanisi, ngoko ke isinxibelelanisi esihambelanayo esilungileyo kunye noqhagamshelo oluchanekileyo lomthwalo ziimfuno zovavanyo ezibalulekileyo.
Ukutshintsha isantya
Isantya sokutshintsha sichazwa njengexesha elifunekayo kwizibuko lokutshintsha (ingalo yokutshintsha) ukusuka “kwi” ukuya ku “cima”, okanye ukusuka ku “cima” ukuya “ku”.
Ixesha elizinzileyo
Ngenxa yokuba ixesha lokutshintsha lichaza kuphela ixabiso elifikelela kwi-90% yexabiso elizinzileyo/elokugqibela lophawu lweRF, ixesha lozinzo liba lumsebenzi obaluleke ngakumbi wokutshintsha kombuso oqinileyo phantsi kweemfuno zokuchaneka nokuchaneka.
Ukuthwala amandla
Amandla okuthwala achazwa njengamandla okutshintsha ukuthwala amandla, ahambelana ngokusondeleyo noyilo kunye nezinto ezisetyenzisiweyo.Xa kukho amandla e-RF/microwave kwi-switch port ngexesha lokutshintsha, ukutshintsha kwe-thermal kwenzeka.Ukutshintsha okubandayo kwenzeka xa amandla ophawu esusiwe phambi kokutshintsha.Ukutshintsha okubandayo kufezekisa uxinzelelo oluphantsi lomphezulu kunye nobomi obude.
Ukupheliswa
Kwizicelo ezininzi, i-50 Ω ukupheliswa komthwalo kubalulekile.Xa iswitshi iqhagamshelwe kwisixhobo esisebenzayo, amandla abonakalisiweyo endlela ngaphandle kokupheliswa komthwalo angonakalisa umthombo.Iiswitshi ze-Electromechanical zinokwahlulwa zibe ngamacandelo amabini: ezo zinokupheliswa komthwalo kunye nezo zingenawo ukupheliswa komthwalo.Ukutshintsha kobume obuqinileyo kunokohlulwa kube ziindidi ezimbini: uhlobo lokufunxa kunye nohlobo lokubonisa.
Ukuvuza kwevidiyo
Ukuvuza kwevidiyo kunokubonwa njengeempawu ze-parasitic ezivela kwisitshixo seRF xa kungekho signali yeRF ekhoyo.Ezi zibonakaliso zivela kwiifom zamaza eziveliswa ngumqhubi wokutshintsha, ngakumbi ukusuka kwi-spikes yangaphambili yombane efunekayo ukuqhuba ukutshintshwa kwesantya esiphezulu se-PIN diode.
Ubomi benkonzo
Ubomi benkonzo ende buya kunciphisa iindleko kunye nemiqobo yohlahlo lwabiwo-mali yokutshintsha ngalunye, okwenza abavelisi bakhuphisane ngakumbi kwimarike yexabiso lanamhlanje.
Ubume bokutshintsha
Iindlela ezahlukeneyo zesakhiwo sokutshintsha zibonelela ngokuguquguquka kokwakha iimatriki ezinzima kunye neenkqubo zovavanyo oluzenzekelayo kwizicelo ezahlukeneyo kunye neefrikhwensi.
Yahlulahlulwe ngokukodwa ibe yinye kubini ngaphandle (SPDT), enye kwabathathu ngaphandle (SP3T), ababini kubini ngaphandle (DPDT), njl.
Ikhonkco elibhekiselele kweli nqaku:https://www.chinaaet.com/article/3000081016
Ixesha lokuposa: Feb-26-2024