Na'urori masu auna firikwensin zamani sun bambanta sosai a ka'ida da tsari. Yadda za a zaɓi na'urori masu auna firikwensin bisa ga takamaiman manufar auna, abin aunawa da yanayin auna shine matsala ta farko da za'a warware yayin auna takamammen adadi. Lokacin da aka ƙayyade na'urar firikwensin, za'a iya ƙayyade hanyar ma'auni da kayan aunawa. Nasara ko gazawar sakamakon auna ya dogara sosai kan ko zaɓin firikwensin ya dace.

1. Ƙayyade nau'in firikwensin gwargwadon abin aunawa da yanayin aunawa.

Don aiwatar da ƙayyadadden ma'auni, ya kamata mu fara la'akari da irin nau'in firikwensin da ake amfani da shi, wanda ke buƙatar ƙayyade bayan nazarin abubuwa da yawa. Domin, ko da lokacin aunawa iri ɗaya na jiki, akwai nau'ikan na'urori masu auna firikwensin da za a zaɓa daga, kuma wane ne ya fi dacewa, muna buƙatar la'akari da waɗannan takamaiman matsalolin bisa ga sifofin da aka auna da yanayin amfani da firikwensin: girman girman. na ma'auni; Bukatun matsayin da aka auna akan ƙarar firikwensin; Ko hanyar auna lamba lamba ce ko mara lamba; Hanyar cire siginar, ma'aunin waya ko mara lamba; Tushen firikwensin, na gida ko shigo da shi, mai araha, ko ci gaban kansa.

Bayan yin la'akari da matsalolin da ke sama, za mu iya ƙayyade irin nau'in firikwensin da za mu zaɓa, sa'an nan kuma la'akari da takamaiman aikin firikwensin.

2, zabin hankali

Gabaɗaya, a cikin kewayon madaidaiciyar firikwensin, mafi girman azancin firikwensin, mafi kyau. Domin kawai lokacin da hankali ya yi girma, ƙimar siginar fitarwa daidai da canjin da aka auna yana da girma, wanda ke da amfani ga sarrafa sigina. Duk da haka, ya kamata a lura cewa hankali na firikwensin yana da girma, kuma hayaniyar waje da ba ta da alaƙa da ma'auni yana da sauƙi don haɗawa a ciki, kuma za a ƙara haɓaka ta hanyar haɓakawa, wanda zai shafi daidaiton ma'auni. Sabili da haka, ana buƙatar cewa firikwensin da kansa ya kamata ya sami babban siginar sigina-zuwa-amo kuma yayi ƙoƙarin mafi kyau don rage siginar tsangwama da aka gabatar daga waje.

Hankali na firikwensin shine jagora. Lokacin da adadin da aka auna ya kasance unidirectional, kuma ana buƙatar jagorancinsa don ya zama babba, ya kamata a zaɓi na'urori masu auna firikwensin da ƙananan hankali a wasu wurare; Idan ma'aunin ma'auni vector ne mai nau'i-nau'i iri-iri, ƙaramar giciye na firikwensin shine, mafi kyau.