Smarter Microelectronics (shanghai) Co., Ltd.

Yongle Li

Qiang Su

Jun Ma

Baiming Xu

A bias circuit includes a first branch circuit, a second branch circuit, a current amplifier and a switch, wherein the first branch circuit is configured to shunt an inputted first current, and input a first branch current of the first current to a power supply ground; the second branch circuit is configured to shunt the inputted first current, and input a second branch current of the first current to the current amplifier; the current amplifier is configured to receive the second branch current of the first current and amplify the second branch current of the first current to serve as a bias current of a power amplifier connected to the bias circuit for outputting; and the switch is configured to switch different resistance values for a resistor in the first branch circuit and/or switch different resistance values for a resistor in the second branch circuit.

Bias circuit and power amplification circuit

A signal transceiving control structure includes a power amplifier and N control branches. The N control branches are configured to control transmission of first signals or receiving of second signals of different network standards according to different control instructions. First ends of the N control branches are respectively connected to an output end of the power amplifier, second ends of the N control branches are respectively connected to N external output ends, third ends of the N control branches are respectively connected to N external input/output ends, wherein N is a positive integer greater than 1. The power amplifier is configured to perform power amplification on the first signals.

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Shanghai, China

Yongle Li