Patent ID: 11894815
Assignee: SMARTER MICROELECTRONICS (GUANG ZHOU) CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power amplifier, comprising:
a power amplification circuit and a linearity compensation circuit;, wherein the linearity compensation circuit is connected between a transistor amplification circuit and a biasing circuit of the power amplification circuit, to linearly compensate a nonlinear distortion of the power amplification circuit;
wherein the transistor amplification circuit comprises: a field-effect-transistor amplification circuit or a triode amplification circuit;
wherein when the transistor amplification circuit is a field-effect-transistor amplification circuit, the linearity compensation circuit comprises: a first field-effect transistor, a first resistor, a second resistor, a first capacitor, a second capacitor, and a third capacitor; and
wherein a gate electrode of the first field-effect transistor is connected to a first end of the second resistor, a second end of the second resistor is connected to the biasing circuit, a source electrode of the first field-effect transistor is connected to a first end of the first resistor, a second end of the first resistor is grounded, the first capacitor is connected in parallel with the first resistor, a drain electrode of the first field-effect transistor is connected to a first end of the third capacitor, a second end of the third capacitor is connected to the field-effect-transistor amplification circuit, a first end of the second capacitor is connected to the gate electrode of the first field-effect transistor, and a second end of the second capacitor is grounded.