Power amplification circuit
AssigneePanasonic Corporation
InventorTakayuki Abe
Life of this patent
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Abstract
A power amplification circuit includes a first transistor, which includes a source coupled to a first power supply and receives an input signal at a gate of the first transistor, a capacitor, which includes a first terminal and a second terminal, the first terminal being coupled to a drain of the first transistor, and a transformer, which is coupled between the second terminal and the gate of the first transistor, transforms a first signal input from the second terminal, and outputs a second signal having a phase different from a phase of the first signal to the gate of the first transistor. The first transistor outputs an output signal from the drain of the first transistor.
Claims5
A power amplification circuit, comprising:
- a first transistor that has a first source terminal coupled to a first power supply, a first gate terminal for receiving an input signal and a first drain terminal, the first transistor outputting a first output signal from the first drain terminal;
- a capacitor that includes a first terminal and a second terminal, the first terminal being coupled to the first drain terminal;
- and
- a transformer that is coupled between the second terminal and the first gate terminal, transforms a first signal input from the second terminal, and outputs a second signal having a phase different from a phase of the first signal to the first gate terminal,
- wherein the transformer includes
- a first inductor that includes a third terminal coupled to the second terminal and a fifth terminal coupled to a second power supply, and
- a second inductor that includes a fourth terminal coupled to the first gate terminal and a sixth terminal coupled to a third power supply and performs magnetic-field coupling with the first inductor.
Dependencies are inferred from the claim text.