APPARATUS AND METHODS FOR VARIABLE CAPACITOR ARRAYS

摘要

Apparatus and methods for variable capacitor arrays are provided herein. In certain configurations, an apparatus includes a variable capacitor array and a bias voltage generation circuit. The variable capacitor array includes a plurality of metal oxide semiconductor (MOS) variable capacitor cells, which include one or more pairs of MOS capacitors implemented in anti-parallel and/or anti-series configurations. In certain implementations, the MOS variable capacitor cells are electrically connected in parallel with one another between a radio frequency (RF) input and an RF output of the variable capacitor array. The bias voltage generation circuit generates bias voltages for biasing the MOS capacitors of the MOS variable capacitor cells.

主权项

1. An integrated circuit comprising:
a variable capacitor array comprising:
a radio frequency (RF) input;a RF output; anda plurality of metal oxide semiconductor (MOS) variable capacitor cells electrically connected in parallel with one another between the RF input and the RF output, wherein the plurality of MOS variable capacitor cells comprises a first MOS variable capacitor cell comprising a first MOS capacitor and a second MOS capacitor, wherein the first MOS capacitor and the second MOS capacitor are electrically connected in anti-parallel, wherein an anode of the first MOS capacitor is electrically connected to a cathode of the second MOS capacitor, and wherein a cathode of the first MOS capacitor is electrically connected to an anode of the second MOS capacitor; and a bias voltage generation circuit configured to bias the plurality of MOS variable capacitor cells including the first MOS variable capacitor cell to control a capacitance of the variable capacitor array.