I-varactor diode yi-diode ekhethekileyo eyenzelwe ngokukodwa ngokomgaqo wokuba i-junction capacitance ye "PN junction" ngaphakathi kwe-diode eqhelekileyo inokutshintsha kunye nokutshintsha kwe-voltage esetyenzisiweyo.

I-diode ye-varactor isetyenziswa kakhulu kwi-high-frequency modulation circuit yefowuni yeselula okanye i-landline kwifowuni engenazintambo ukuze iqonde ukumodareyithwa kwe-low-frequency signal kwi-high-frequency signal kwaye ikhuphe. Kwimeko yokusebenza, i-varactor diode modulation voltage yongezwa ngokubanzi kwi-electrode engalunganga Yenza i-capacitance yangaphakathi ye-varactor diode itshintshe kunye ne-modulation voltage.

I-varactor diode iyasilela, ikakhulu ibonakaliswa njengokuvuza okanye ukusebenza kakubi:

(1) Xa ukuvuza kusenzeka, i-high-frequency modulation circuit ayiyi kusebenza okanye ukusebenza kwemodyuli kuya kuhla.

(2) Xa ukusebenza kwe-varactor kuhla, ukusebenza kwe-high-frequency modulation circuit ayizinzile, kwaye i-modulated high-frequency signal ithunyelwa kwelinye iqela kwaye ifunyenwe ukuphambuka kwelinye iqela.

Xa enye yezi meko zingentla yenzeka, i-varactor diode yemodeli efanayo kufuneka itshintshwe.