Wace siga ya kamata a yi la'akari da shi musamman lokacin da za a ɗauki matatar RF?

Lokacin zayyana maganin RF, matatun RF suna taka rawar gani a cikin tsarin. Idan ana ɗaukar matatar RF, yakamata a yi la'akari da sigogi masu zuwa.

1. Mitar cibiyar: f0 gajere ne don mitar cibiyar wucewar madaidaicin RF, wanda galibi ana ɗauka azaman f0 = (fL+ fH) /2, kuma fL da fH sune wuraren mitar gefen dangi na 1dB ko 3dB digo daga hagu da dama na band-pass ko band-stop tace. Ana ƙididdige yawan bandwidth-band na matattara mai kunkuntar ta hanyar ɗaukar ƙarancin sakawa azaman mitar tsakiya.

2. Cutoff Frequency: Ga matattarar low-pass, tana nufin madaidaicin mitar lambar wucewa, sannan kuma ta babban tafsirin, tana nufin mitar ta hagu na passband, wanda galibi ana bayyana shi da 1dB. ko maki asarar dangi 3dB. Maganar asarar dangi shine kamar haka: don ƙarancin izinin wucewa, asarar shigarwa ta dogara ne akan DC, kuma don babban tacewa, asarar shigarwar ta dogara ne akan mafi girman mitar wucewa ba tare da tsangwama ba.

3. BWxdB: Yana nufin fadin bakan da za a ketare, BWxdB= (fH-FL). fH da fL sune madaidaitan maki hagu da dama a X (dB) da aka saukar dangane da asarar sakawa a mitar f0 na tsakiya. X = 3, 1, 0.5, wato BW3dB, BW1dB, BW0.5dB, yawanci ana amfani da su don siffanta sigogin bandwidth mai wucewa na tacewa. Rarraba bandwidth = BW3dB/f0×100%, wanda kuma aka fi amfani dashi don siffanta bandwidth-band na tacewa.

 

1. Asarar shigarwa: Saboda tacewar RF, asalin siginar da ke cikin da'irar yana raguwa, asararsa yana bayyana a tsakiya ko yanke mita. Idan bukatar cikakken-band asarar ya kamata a jaddada.

 

1. Ripple: Yana nufin kololuwa-zuwa kololuwar saɓani na asara tare da mitar dangane da maƙasudin hasara a cikin kewayon bandwidth na 1dB ko 3dB (mitar yanke-kashe).

 

 

1. Riplpe Passband: Yana nufin canza asarar sakawa a cikin mitar wucewa. Canjin-band-band a cikin bandwidth 1dB shine 1dB.

 

1. VSWR: Mahimmin alama ce don auna ko siginar da ke cikin madaidaicin madaidaicin matattara ta dace kuma ana watsa shi. VSWR= 1:1 shine don daidaitaccen wasa, VSWR> 1 shine don rashin daidaituwa. Don ainihin tacewar RF, bandwidth mai gamsarwa VSWR <1.5:1 gabaɗaya bai wuce BW3dB ba, kuma rabonsa zuwa BW3dB yana da alaƙa da odar tacewa da asarar sakawa.
2. Asara Komawa: Yana nufin ma'aunin decibels (dB) na ikon shigarwa da ikon tunani na tashar sigina, wanda kuma yayi daidai da |20Log10ρ|, ρis ƙarfin nunin wutar lantarki. Asarar dawowa ba ta da iyaka lokacin da tashar tashar ta mamaye ikon shigarwar.
3. Ƙimar dalla-dalla: mahimmin fihirisa don auna aikin zaɓi na tacewa RF. Mafi girman fihirisar ita ce, mafi kyawun murkushe siginar tsangwama daga waje. Yawancin tsari guda biyu ne: daya shine a tambayi nawa ne aka kashe dB fs don mitar da aka ba da ita, kuma hanyar lissafin ita ce attenuation as-il a FS; Sauran shine gabatar da fihirisar don siffanta matakin kusanci tsakanin amplitude-mita martani na tacewa da madaidaicin rectangle - coefficient rectangle (KxdB> 1), KxdB = BWxdB/BW3dB, (X na iya zama 40dB, 30dB, 20dB, da dai sauransu). Yawan oda da tacewa, shine mafi girman rectangular -- wato, kusancin K shine madaidaicin ƙimar 1, mafi wahalar yinsa.

 

Tabbas, banda abubuwan da ke sama, zaku iya la'akari da ƙarfin aiki, ma'aunin aikace-aikacen, ko don amfanin cikin gida ko waje, da kuma masu haɗin kai. Koyaya, sigogin da ke sama sune mafi mahimmanci don yanke shawarar aikin sa.

A matsayin mai tsara matattarar RF, Jingxin zai iya taimaka muku kan batun matatun RF, da keɓance matatar mai wucewa gwargwadon maganin ku. Ana iya tuntuɓar ƙarin dalla-dalla tare da mu.