Radio frequency digital to analog converter
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United States of America Patent
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May 5, 2015
Grant Date -
Nov 20, 2014
app pub date -
Jul 30, 2014
filing date -
Mar 15, 2013
priority date (Note) -
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Abstract
A RF digital to analog converter has a first capacitor arrangement, a first common node, and a first controller. The first capacitor arrangement has multiple switchable capacitor paths arranged in parallel. Respective switchable capacitor paths have a switchable element and a capacitor coupled in series. The first common node is connected to the multiple switchable capacitor paths. The first controller receives a baseband signal having a component, and a local oscillator (LO) signal. The first controller combines the component and the LO signal to obtain a first modulation signal. The first controller controls the multiple switchable capacitor paths of the first capacitor arrangement with the first modulation signal.
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