Apparatus and methods for high voltage variable capacitor arrays with feed-forward capacitors

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United States of America Patent

PATENT NO 9461609
SERIAL NO

14705386

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Abstract

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Apparatus and methods for high voltage variable capacitors are provided herein. In certain configurations, an integrated circuit (IC) includes a variable capacitor array and a bias voltage generation circuit that biases the variable capacitor array to control the array's capacitance. The variable capacitor array includes a plurality of variable capacitor cells electrically connected in parallel between a radio frequency (RF) input and an RF output of the IC. Additionally, each of the variable capacitor cells can include a cascade of two or more pairs of anti-series metal oxide semiconductor (MOS) capacitors between the RF input and the RF output. The pairs of anti-series MOS capacitors include a first MOS capacitor and a second MOS capacitor electrically connected in anti-series. The bias voltage generation circuit generates bias voltages for biasing the MOS capacitors of the variable capacitor cells.

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Patent Owner(s)

  • TDK CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gupta, Dev V Concord, US 48 2189
Lai, Zhiguo Acton, US 19 252
Madan, Anuj Somerville, US 44 558

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