Apparatus and method for a switched capacitor architecture for multi-band doherty power amplifiers
AssigneeSamsung Electronics Co., Ltd.
InventorsNaveen Yanduru, Robert Monroe, Mike Brobston
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Abstract
An apparatus and method for a switched capacitor architecture for multi-band Doherty power amplifiers are provided. The apparatus is for amplifying Radio Frequency (RF) signals, and the apparatus includes a multi-band Power Amplifier (PA) including a plurality of input matching circuits including switchable capacitors, and a plurality of output matching circuits including the switchable capacitors, wherein the multi-band PA is tunable to more than one RF frequency band.
Claims19
An apparatus for amplifying Radio Frequency (RF) signals, the apparatus comprising:
- a multi-band Power Amplifier (PA) comprising:
- a plurality of input matching circuits including switchable capacitors;
- and
- a plurality of output matching circuits including the switchable capacitors,
- wherein the multi-band PA is tunable to more than one RF frequency band, and
- wherein the output matching circuits comprise a plurality of output combiner branches that are selectively actuated via the switchable capacitors to tune the multi-band PA to each band of the more than one RF frequency band.
A method for tuning a multi-band Power Amplifier (PA), the method comprising:
- switching switchable capacitors of input matching circuits of the multi-band PA to select a Radio Frequency (RF) band of a plurality of RF bands;
- switching switchable capacitors of output matching circuits of the multi-band PA to select a RF band of a plurality of RF bands;
- and
- activating switchable capacitors of amplifiers to amplify a RF signal corresponding to the selected RF band,
- wherein the switchable capacitors of the amplifiers can be tuned to more than one of the plurality of the RF bands,
- wherein the output matching circuits comprise a plurality of output combiner branches that are selectively actuated via the switchable capacitors to select each one of the plurality of bands that the amplifiers can be tuned to.
Dependencies are inferred from the claim text.