Power amplifier
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsKyujin CHOI, Jaehyouck CHOI, Ingeun YU, Yoshiyuki TONAMI, Kyung Hee HONG
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Abstract
A power amplifier includes a first power transistor configured to amplify a first input Radio Frequency (RF) signal, and output a first output RF signal; a first bias circuit configured to operate in a first communication mode, and comprising a first transistor configured to supply a first bias current to the first power transistor; and a second bias circuit configured to operate in a second communication mode, and comprising a second transistor configured to supply a second bias current to the first power transistor.
Claims20
A power amplifier comprising:
- a first power transistor configured to amplify a first input Radio Frequency (RF) signal, and output a first output RF signal;
- a first bias circuit configured to operate in a first communication mode, and comprising a first transistor configured to supply a first bias current to the first power transistor;
- and
- a second bias circuit configured to operate in a second communication mode, and comprising a second transistor configured to supply a second bias current to the first power transistor.
A power amplifier comprising:
- a first power transistor configured to amplify a first input Radio Frequency (RF) signal, and output a first output RF signal;
- a first transistor configured to operate in a first communication mode and a second communication mode, and comprising a first terminal configured to supply a first bias current to the first power transistor;
- a second power transistor configured to amplify a second input RF signal corresponding to the first output RF signal, and output a second output RF signal;
- a second transistor configured to operate in the first communication mode and comprising a first terminal configured to supply a second bias current to the second power transistor;
- and
- a third transistor configured to operate in the second communication mode and comprising a first terminal configured to supply a third bias current to the second power transistor.
Dependencies are inferred from the claim text.