A cikin tsarin gwaji na microwave, RF da na'urorin lantarki ana amfani da su sosai don jigilar sigina tsakanin kayan aiki da DUTs.Ta hanyar sanya mai canzawa cikin tsarin matrix mai sauyawa, ana iya tura sigina daga kayan aiki da yawa zuwa DUT ɗaya ko fiye.Wannan yana ba da damar kammala gwaje-gwaje da yawa ta amfani da na'urar gwaji guda ɗaya ba tare da buƙatar yankewa akai-akai da sake haɗawa ba.Kuma yana iya cimma sarrafa kansa na tsarin gwaji, don haka inganta ingantaccen gwaji a wuraren samar da jama'a.
Maɓalli masu nuna alamun aiki na sauya kayan aikin
Ƙirƙirar babban sauri na yau yana buƙatar amfani da babban aiki da abubuwan canzawa masu maimaitawa a cikin kayan gwaji, musanya musanyawa, da tsarin gwaji na atomatik.Waɗannan maɓallan galibi ana bayyana su bisa ga halaye masu zuwa:
Kewayon mita
Matsakaicin mitar RF da aikace-aikacen microwave ya tashi daga 100 MHz a cikin semiconductor zuwa 60 GHz a cikin sadarwar tauraron dan adam.Haɗe-haɗe na gwaji tare da faɗaɗɗen madaɗaɗɗen mitar aiki sun ƙaru da sassaucin tsarin gwaji saboda faɗaɗa ɗaukar hoto.Amma faffadan mitar aiki na iya shafar wasu mahimman sigogi.
Asarar shigarwa
Asarar shigar kuma yana da mahimmanci don gwaji.Asara fiye da 1 dB ko 2 dB zai rage girman matakin siginar, yana ƙara lokacin tashi da faɗuwar gefuna.A cikin mahallin aikace-aikacen mitoci masu yawa, ingantaccen watsa makamashi wani lokaci yana buƙatar farashi mai yawa, don haka ƙarin asarar da injin injin lantarki ya gabatar a cikin hanyar juyawa yakamata a rage shi gwargwadon yiwuwa.
Dawo da asara
Ana bayyana asarar dawowar a cikin dB, wanda shine ma'auni na ma'aunin ƙarfin ƙarfin lantarki (VSWR).Ana haifar da asarar dawowa ta rashin daidaituwa tsakanin da'irori.A cikin kewayon mitar microwave, halayen kayan abu da girman abubuwan haɗin cibiyar sadarwa suna taka muhimmiyar rawa wajen tantance madaidaicin impedance ko rashin daidaituwa da ke haifar da tasirin rarrabawa.
Daidaitaccen aiki
Daidaiton ƙarancin aikin asara na iya rage tushen kuskuren bazuwar a cikin hanyar aunawa, don haka inganta daidaiton aunawa.Daidaituwa da amincin aikin sauyawa yana tabbatar da daidaiton ma'auni, da rage farashin mallakar mallaka ta hanyar tsawaita hawan keke da haɓaka lokacin aikin tsarin gwaji.
Kaɗaici
Warewa shine matakin rage siginoni marasa amfani da aka gano a tashar ruwan sha'awa.A manyan mitoci, keɓewa ya zama mahimmanci musamman.
VSWR
An ƙaddara VSWR na sauyawa ta hanyar girman injina da jurewar masana'anta.VSWR mara kyau yana nuna kasancewar tunani na ciki wanda ya haifar da rashin daidaituwa na impedance, kuma siginar parasitic da waɗannan tunani ke haifar da su na iya haifar da tsangwama ta alamar tsaka-tsaki (ISI).Wadannan tunani yawanci suna faruwa kusa da mai haɗawa, don haka kyakkyawar haɗin haɗin haɗi da daidaitaccen haɗin kaya sune mahimman buƙatun gwaji.
Saurin sauyawa
An bayyana saurin sauyawa a matsayin lokacin da ake buƙata don tashar sauyawa (hannun hannu) don tafiya daga "kan" zuwa "kashe", ko daga "kashe" zuwa "kunna".
Lokacin kwanciyar hankali
Saboda gaskiyar cewa lokacin sauyawa kawai yana ƙayyade ƙimar da ta kai 90% na ƙimar barga/ƙararmar siginar RF, lokacin kwanciyar hankali ya zama mafi mahimmancin aiki na jujjuyawar ƙasa ƙarƙashin buƙatun daidaito da daidaito.
Ƙarfin ɗauka
An ayyana ƙarfin ɗaukar hoto azaman ikon mai canzawa don ɗaukar wutar lantarki, wanda ke da alaƙa da ƙira da kayan da ake amfani da su.Lokacin da akwai ƙarfin RF/Microwave akan tashar sauyawa yayin sauyawa, canjin zafi yana faruwa.Canjin sanyi yana faruwa lokacin da aka cire ikon siginar kafin sauyawa.Canjawar sanyi yana samun ƙananan damuwa ta fuskar lamba da tsawon rayuwa.
Karewa
A cikin aikace-aikace da yawa, ƙarewar 50 Ω yana da mahimmanci.Lokacin da aka haɗa mai sauyawa zuwa na'ura mai aiki, ƙarfin da aka nuna na hanyar ba tare da ƙarewar kaya ba na iya lalata tushen.Ana iya raba na'urorin lantarki zuwa nau'i biyu: waɗanda ke da ƙarewar lodi da waɗanda ba tare da ƙarewar kaya ba.Za a iya raba madaukai masu ƙarfi zuwa nau'i biyu: nau'in sha da nau'in tunani.
Fitowar bidiyo
Ana iya ganin yatsan bidiyo azaman siginar parasitic da ke bayyana akan tashar tashar RF mai sauyawa lokacin da babu siginar RF.Waɗannan sigina suna fitowa ne daga nau'ikan waveform ɗin da direban mai kunnawa ke kerawa, musamman daga filayen wutar lantarki na gaba da ake buƙata don fitar da babban maɓalli na PIN diode.
Rayuwar sabis
Rayuwar sabis na dogon lokaci za ta rage ƙima da ƙayyadaddun kasafin kuɗi na kowane canji, wanda zai sa masana'antun su ƙara yin gasa a kasuwa mai mahimmancin farashi na yau.
Tsarin juyawa
Siffofin tsarin daban-daban na masu sauyawa suna ba da sassauci don gina hadaddun matrices da tsarin gwaji na atomatik don aikace-aikace da mitoci daban-daban.
An raba shi musamman zuwa ɗaya cikin biyu fita (SPDT), ɗaya cikin uku (SP3T), biyu cikin biyu fita (DPDT), da sauransu.
Hanyar haɗi a cikin wannan labarin:https://www.chinaaet.com/article/3000081016
Lokacin aikawa: Fabrairu-22-2024