Apparatus and methods for high voltage variable capacitor arrays with feed-forward capacitors
US9461609B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2015 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | May 6, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0064
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.