Low noise switching voltage regulator
First Claim
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1. A method for supplying voltage to a power amplifier in a portable communication handset, comprising:
- providing a switching voltage regulator, the switching voltage regulator configured to provide a direct current (DC) output; and
providing a data stream to the switching voltage regulator, wherein the data stream comprises sufficient bit transitions to spread any alternating current (AC) voltage on the DC output over a bandwidth occupied by data to be transmitted by the portable communication handset.
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Abstract
A low-noise switching voltage regulator for supplying a voltage to a radio frequency (RF) power amplifier is disclosed. In one embodiment, the invention can be conceptualized as a power amplifier supply circuit, comprising a pair of oppositely polarized semiconductor switches, and a data formatter configured to supply a data stream having a voltage transition on at least every other bit to each of the pair of oppositely polarized semiconductor switches.
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Citations
7 Claims
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1. A method for supplying voltage to a power amplifier in a portable communication handset, comprising:
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providing a switching voltage regulator, the switching voltage regulator configured to provide a direct current (DC) output; and providing a data stream to the switching voltage regulator, wherein the data stream comprises sufficient bit transitions to spread any alternating current (AC) voltage on the DC output over a bandwidth occupied by data to be transmitted by the portable communication handset. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification