Harmonic control network and design method of F-type power amplifier adopting harmonic control network

Abstract

The invention discloses a harmonic control network and a design method of an F-type power amplifier adopting the harmonic control network. The traditional F-type power amplifiers have relatively narrow bandwidths. The harmonic control network comprises a first micro-strip line, a second micro-strip line, a third micro-strip line, a fourth micro-strip line, a fifth micro-strip line and a sixth micro-strip line; one end of the first micro-strip line is connected with an output end of a transistor and the other end of the first micro-strip line is connected with one end of the second micro-stripline; the other end of the second micro-strip line is connected with one end of the third micro-strip line and one end of the fifth micro-strip line; the other end of the fifth micro-strip line is suspended; the other end of the third micro-strip line is connected with one end of the fourth micro-strip line the other end of the fourth micro-strip line is connected with one end of the sixth micro-strip line; and the other end of the sixth micro-strip line is suspended. According to the harmonic control network and the design method, conical tuning micro-strip lines are added, so that the F-typepower amplifiers can broaden the bandwidths while keeping high efficiency.

Description

technical field [0001] The invention belongs to the technical field of power amplifiers, and in particular relates to a harmonic control network and a design method of a class F power amplifier using the same. Background technique [0002] For more than half a century, radio frequency microwave technology has been developed rapidly and has been widely used in communication fields such as mobile phones, satellite communications, and WLAN. The radio frequency power amplifier module is an important part of the wireless communication system. In order to meet the long-distance transmission of the signal and ensure the reliable reception of the signal, the power amplifier module must be used in the wireless transceiver system to amplify the signal. Therefore, the performance of the power amplifier module directly determines the working conditions of the entire transceiver system. There is no doubt that the power amplifier module is the core part of the RF front end. [0003] Wit...

AI Technical Summary

Problems solved by technology

However, the class F power amplifiers in the prior art have the following problems: because the traditional class F power amplifiers use microstrip lines for harmonic control, and the high Q characteristic of microstrip lines often greatly limits the operating bandwidth of power amplifiers

However, there is a problem with the single microstrip tuning line: within the design bandwidth, when the frequency is close to the highest frequency point and the lowest frequency point, there is a problem of obvious drop in efficiency, which leads to the problem of low flatness in the band

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