A System for Designing Broadband Matching Networks Using Confined Impedance Solution Space

Abstract

The invention discloses a system for designing a broadband matching network using a limited impedance solution space, which belongs to the technical field of wireless communication, and especially designs a broadband matching network based on a limited impedance solution space. The traditional matching network design method is often to find the optimal impedance point (R opt ), and then the S parameters of the matching network are approached towards the optimum point. Such a design method has obvious limitations for broadband design, especially across octaves. The broadband matching design method mentioned in the present invention defines a suitable impedance Solution space, not limited to R opt , so that in the broadband design, each frequency point in the bandwidth corresponds to a solution space. Since the calculation method can be associated with the frequency, it is only necessary to use computer software to quickly find a reasonable solution for each frequency point in the entire frequency band, so that each S of frequency 11 The parameters are all inside their corresponding solution space regions, and the design difficulty of broadband matching is greatly reduced due to the expanded impedance solution space.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and particularly designs a system for designing a broadband matching network using a limited impedance solution space. Background technique [0002] The RF power amplifier is an important part of the wireless transmission system, which will directly affect the overall performance of the transmitter. The performance indicators for evaluating power amplifiers mainly include bandwidth, output power, linearity, and efficiency (divided into power-added efficiency and drain efficiency). The bandwidth is largely determined by the matching structure. A good broadband matching design method can often greatly expand the operating bandwidth of the amplifier. Broadband matching design methods widely used in the industry now mainly include Smith chart matching, real frequency technology, load pull technology (Load pull) and so on. But most of the design methods often rely on the designer's e...

AI Technical Summary

Problems solved by technology

However, this continuous design method not only needs to transform the impedance solution space from the current source plane to the packaging plane, but also it is difficult to take the impedance solution space involved in a curve as the optimization target in the specific design process, which greatly increases the difficulty of design.

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