A power amplifier matching network, control method and power amplifier
CN114389549BActive Publication Date: 2026-07-07E SURFING IOT CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- E SURFING IOT CO LTD
- Filing Date
- 2021-12-31
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
Existing technologies make it difficult to achieve both high bandwidth and high efficiency in power amplifiers in 5G IoT, and connecting multiple power amplifiers increases circuit complexity and maintenance costs.
Method used
A novel power amplifier matching network is employed, comprising a four-microstrip topology and packaged source. The optimal impedance is calculated using an algorithm, and the matching network is optimized by combining load pulling technology and nonlinear capacitors.
Benefits of technology
It achieves high efficiency and high output power over a wider frequency range, reduces circuit complexity, and simplifies the maintenance process.
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Smart Images
Figure CN114389549B_ABST
Abstract
The application discloses a power amplifier matching network, a control method and a power amplifier, and the matching network at least comprises: a first microstrip line, one end of which is connected with a signal input end, and the other end of which is connected with a center point; a second microstrip line, one end of which is connected with a bias circuit, and the other end of which is connected with the first microstrip line, and the length of the second microstrip line is one fourth of the wavelength of the center frequency of an input signal; a third microstrip line, one end of which is grounded, and the other end of which is connected with the second microstrip line; and a fourth microstrip line, one end of which is open-circuited, and the other end of which is connected with the third microstrip line, and the second microstrip line and the fourth microstrip line jointly make the second harmonic generated by the input signal in a short-circuit state. The application combines the four microstrip lines through a new topological structure to construct the matching network of the power amplifier, and the optimal impedance is obtained through an algorithm.
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