Patent ID: 11936443
Assignee: SMARTER MICROELECTRONICS (GUANG ZHOU) CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A power distribution circuit, which is applied to a radio frequency front-end transceiving apparatus, comprising: a common-stage amplifying circuit and a branch-stage amplifying circuit, wherein the branch-stage amplifying circuit comprises at least two parallel channel amplifying circuits;
the common-stage amplifying circuit is configured to perform a first signal processing on a radio frequency signal received by an antenna of the radio frequency front-end transceiving apparatus to obtain a first power signal, and output the first power signal to each of the channel amplifying circuits, respectively, wherein, the first signal processing at least includes a buffering processing, an isolation processing and a low-noise amplifying processing;
each of channel amplifying circuits is configured to perform a second signal processing on the first power signal to obtain a second power signal, and output the second power signal to a radio transceiving device of the radio frequency front-end transceiving apparatus; and
the second signal processing at least includes a low-noise amplifying processing;
wherein the common-stage amplifying circuit comprises a low-noise amplifying circuit structure, which is configured to perform the first signal processing on the radio frequency signal received by the antenna of the radio frequency front-end transceiving apparatus to obtain the first power signal, and output the first power signal to each of the channel amplifying circuits;
wherein the common-stage amplifying circuit further comprises a radio frequency anti-interference circuit;
wherein, the radio frequency anti-interference circuit is connected between an output end of the low-noise amplifying circuit structure and a direct current power supply of the low-noise amplifying circuit structure, and is configured to prevent the radio frequency signal from channeling into the direct current power supply, and protect the common-stage amplifying circuit from being interfered by the radio frequency.