Patent ID: 7375948

Claim:
A variable charge packet integrated circuit capacitor, comprising: a semiconductor layer doped to contain mobile charge carriers of a first polarity; first and second capacitor electrodes disposed adjacent to each other on a surface of said layer; first and second gate electrodes disposed on opposite sides of said capacitor electrodes on said surface; source and sink electrodes disposed on opposite sides of said gate electrodes on said surface; and circuitry coupled to said gate, source and sink electrodes arranged to: inject a finite charge into the region of said layer under said capacitor electrodes, and apply potentials to said gate electrodes such that said injected charge is confined to the region of said layer under said capacitor electrodes; such that an RF drive signal voltage V applied between said capacitor electrodes causes said confined charge to move back and forth between the portion of said region below said first capacitor electrode and the portion of said region below said second capacitor electrode.