Power amplifier and input matching network thereof

A power amplifier and input matching technology, which is applied in the electronic field, can solve the problems of poor spurious and affecting communication quality, etc., and achieve the effect of continuously adjustable voltage and continuously adjustable gain suppression

Pending Publication Date: 2022-07-22
LANSUS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The increase of PA transmission power also requires higher power gain, so it is easy to bring worse spurs, and the deterioration of out-of-band spurs will seriously affect the quality of communication

Method used

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  • Power amplifier and input matching network thereof
  • Power amplifier and input matching network thereof
  • Power amplifier and input matching network thereof

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Embodiment Construction

[0028] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] The specific implementations / examples described herein are specific implementations of the present invention, and are used to illustrate the concept of the present invention. They are all illustrative and exemplary, and should not be construed as limiting the implementation of the present invention and the scope of the present invention. limit. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the description of the present application, and these technical solutions include any obvious technical solutions to the embodiments described herein. The technical solutions of replacement and modification are all within the protection scope of the present invention.

[0030] like figure 1 Shown is a circuit schematic dia...

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Abstract

The invention provides a power amplifier and an input matching network thereof. An input matching circuit comprises a first resonator and a second resonator, the first resonator comprises a first input capacitor Cin1, a first variable capacitor VC1 connected with the first input capacitor Cin1 in series and a first inductor Lin1 connected with the first variable capacitor VC1 in series, and a first reverse bias voltage V1 is connected to the first end of the first variable capacitor VC1; the second resonator comprises a second variable capacitor VC2 connected with the first variable capacitor VC1 in series and a second inductor Lin2 connected with the second variable capacitor VC2 in series, and the first end of the first variable capacitor VC1 is connected with a second reverse bias voltage V2; the capacitance of the first variable capacitor VC1 can be adjusted by adjusting the first reverse bias voltage V1 and the second reverse bias voltage V2, and the capacitance of the second variable capacitor VC2 can be adjusted by adjusting the second reverse bias voltage V2. According to the invention, the purpose of continuously adjusting gain suppression can be achieved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a power amplifier and an input matching network thereof. Background technique [0002] Radio frequency power amplifier (PA), as an important part of mobile phone communication system, is mainly used for signal amplification. With the continuous development of the mobile phone communication system, the power requirements of the mobile phone power amplifiers have been continuously increased. The increase of PA transmit power also requires higher power gain, so it is easy to bring about worse spurs, and the deterioration of out-of-band spurs will seriously affect the quality of communication. SUMMARY OF THE INVENTION [0003] In view of the above deficiencies of the prior art, the present invention proposes a power amplifier and a radio frequency chip for suppressing and attenuating non-resonant frequency band signals and reducing the gain of non-resonant frequency band signa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/56H03F1/26H03F3/24H03F3/195
CPCH03F1/565H03F1/26H03F3/245H03F3/195
Inventor 周佳辉胡滨郭嘉帅
Owner LANSUS TECH INC
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