Low noise switching voltage regulator
AssigneeSkyworks Solutions, Inc.
InventorsChris Levesque, Jaleh Komaili, Jason D. Millard
Life of this patent
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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.
Claims21
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.
A portable communication handset, comprising:
- a power amplifier supply circuit configured to supply a direct current (DC) voltage;
- a power amplifier configured to receive the DC voltage, wherein the power amplifier supply circuit comprises;
- a switching voltage converter, comprising
- a pair of oppositely polarized transistors;
- 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.
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.
Dependencies are inferred from the claim text.