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US 2024/0258972 A1Published application
Power supply circuit, processing circuit, and wireless communication system
OwnerJianfeng Wu, Yi Zhang +3inventors
InventorsJianfeng Wu, Yi Zhang, Pan Xue, Danting Hu, Hsianghui Chang
Life of this patent
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Abstract
A wireless communication system includes: a processing circuit, at least one linear amplification circuit, a switch amplification circuit, at least one first filter capacitor, and at least one power amplifier. An output end of the switch amplification circuit, an output end of the linear amplification circuit, and a power supply end of the power amplifier are coupled at a first node. The first filter capacitor is coupled to an input end of the linear amplification circuit or the output end of the linear amplification circuit.
Claims21
1-34. (canceled)
A system, comprising:
- a processing circuit;
- at least one linear amplification circuit;
- a switch amplification circuit;
- at least one first filter capacitor;
- and
- at least one power amplifier, wherein an output end of the switch amplification circuit, an output end of the linear amplification circuit, and a power supply end of the power amplifier are coupled at a first node, and the first filter capacitor is coupled to an input end of the linear amplification circuit or to the output end of the linear amplification circuit;
- wherein the processing circuit is configured to:
- output a first radio frequency signal, a first envelope signal, and a first drive signal of a first transmit signal, wherein the first drive signal comprises a switch signal of the switch amplification circuit or a second envelope signal, and the switch signal of the switch amplification circuit is generated by the processing circuit based on the second envelope signal;
- wherein the linear amplification circuit is configured to:
- receive the first envelope signal, and output a first power supply voltage to the first node;
- wherein the switch amplification circuit is configured to:
- receive the first drive signal, and output a second power supply voltage to the first node;
- and
- wherein the power amplifier is configured to amplify the first radio frequency signal based on the first power supply voltage and the second power supply voltage.
11 more elements
A circuit, comprising:
- at least one linear amplification circuit;
- and
- a switch amplification circuit, and at least one first filter capacitor, wherein an output end of the linear amplification circuit and an output end of the switch amplification circuit are coupled at a first node, a power supply end of a power amplifier is coupled at the first node, and the first filter capacitor is coupled to an input end of the linear amplification circuit or the output end of the linear amplification circuit;
- wherein the linear amplification circuit is configured to receive a first envelope signal sent by a processing circuit, and output a first power supply voltage to the first node;
- wherein the switch amplification circuit is configured to receive a first drive signal sent by the processing circuit, and output a second power supply voltage to the first node, wherein the first envelope signal and the first drive signal are generated by the processing circuit based on a first transmit signal, the first drive signal comprises a switch signal of the switch amplification circuit or a second envelope signal, and the switch signal of the switch amplification circuit is generated by the processing circuit based on the second envelope signal;
- and
- wherein the power amplifier amplifies, based on the first power supply voltage and the second power supply voltage, a first radio frequency signal, wherein the first radio frequency signal is generated by the processing circuit based on the first transmit signal.
4 more elements
Dependencies are inferred from the claim text.