Diode ya varactor ni diode idasanzwe yakozwe muburyo bwihariye hakurikijwe ihame ryuko ubushobozi bwimikorere ya "PN ihuza" imbere ya diode isanzwe ishobora guhinduka hamwe no guhindura voltage ikoreshwa.

Diode ya varactor ikoreshwa cyane cyane mumuzunguruko mwinshi wa terefone igendanwa cyangwa umurongo wa terefone utagira umugozi kugirango umenye ihinduka ryikimenyetso gito kuri signal yumurongo mwinshi kandi urekure. Mubikorwa bikora, varactor diode modulation voltage yongeweho muri rusange kuri electrode mbi Kora ubushobozi bwimbere bwimbere ya varactor diode ihinduka hamwe na voltage ya modulation.

Diode ya varactor irananirana, igaragara cyane nko kumeneka cyangwa imikorere mibi:

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Iyo kimwe mubihe byavuzwe haruguru kibaye, varactor diode yuburyo bumwe igomba gusimburwa.