Patent ID: 11881823
Assignee: SMARTER MICROELECTRONICS (GUANG ZHOU) CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A communication system comprising a power amplifier circuit including a power amplification circuit and a diode assembly;
wherein
the diode assembly is connected in series with a transistor amplification circuit of the power amplification circuit, and the transistor amplification circuit is configured to, when load of power amplifier is mismatched, turn the diode assembly on, so as to divide a current voltage to at least two electrodes of the transistor amplification circuit; and
the transistor amplification circuit is configured to generate a swing in a drain voltage when the load of the power amplifier is mismatched, thereby allowing a voltage difference between the electrodes of a field effect transistor of the transistor amplification circuit to be reduced, and avoiding occurrence of breakdown of the field effect transistor of the amplification circuit and improving robustness of the power amplifier.