Design Of Multi Band Reconfigurable Matching Network And Power Amplifier

Multiple communication systems have evolved one after the other as the fundamental principle of power amplifier and communication technology has been rapidly updated.The communication system’s bandwidth,transmission rate,and system capacity have all substantially increased,but the issue of compatibility and spectrum resource scarcity has grown increasingly severe,posing a bigger barrier to the growth of communication systems in the future.As a critical component of a communication system,how to achieve multi-mode and multi-band operation of an RF power amplifier has significant research value and far-reaching implications for solving the aforementioned problems,realizing miniaturization,multi-function integration,and lowering microwave device production costs.The basic technology for achieving multi-mode and multi-band functioning of power amplifiers is reconfigurable technology.Its application in power amplifier design has been a research focus.Through the research of reconfigurable devices,SPDT Switch and distributed switch are designed by using PIN switch,which are used in the design of two reconfigurable power amplifiers,respectively to solve the problems of compatibility and shortage of spectrum resources in the communication system.The following are the key elements of this paper:1)A dual-frequency reconfigurable harmonic suppression matching structure based on the Gan transistor CGH40010 F is suggested.A dual-frequency reconfigurable harmonic suppression power amplifier is created on this premise.The power amplifier improves the overall efficiency of the circuit by incorporating a harmonic suppression network into the output matching and employing the SPDT Switch to control the conduction state of the output branch;the input matching employs a T-section with a compact structure and simple calculation.The circuit simulation reveals that when the power amplifier is operating at 1.75 GHz and 2.6GHz,the output power is 43 d Bm and 41 d Bm respectively,and the PAE(power added efficiency)is more than 67 percent,which alleviates some of the above problems.2)To address the issue of compatibility and spectrum resource scarcity,a multi band reconfigurable matching structure and a multi band reconfigurable power amplifier are presented as part of the broadband matching structure study.This power amplifier’s operating band includes a portion of the L,S,and C bands.The distributed switch is utilized in the output matching to regulate the working state of the branch in order to complete the switching of distinct working bands,and the input matching is constructed using broadband filter theory.At1.5～2.85 GHz,the output power is higher than 39.5d Bm and the PAE is greater than 39.5 percent,the output power is larger than 38.1d Bm at 3.15～4.5GHz,and the PAE is greater than 43.5percent.The test findings fulfill the design specifications and demonstrate theoretical viability.according to the test findings.The test results meet the design requirements and prove the feasibility of the theory.The paper has 58 figures,10 tables and 77 references.