High-power synthesizer covering 9kHz-100MHz and synthesis method

Abstract

The invention discloses a high-power synthesizer covering 9 kHz-100 MHz. The high-power synthesizer mainly solves the problem that low frequency and high frequency of an existing power synthesizer cannot be compatible. The synthesizer is composed of six transmission line transformers, the four transformers at the synthesis end are connected with a radio frequency power amplifier, four paths of power are synthesized, isolation resistors are arranged between ports, and mutual influence of the amplifiers is avoided. And the two transformers at the output end convert the synthesized impedance intothe characteristic impedance of the radio frequency system. By means of the design, a proper transformer topology design is adopted, the coupling capacitance between lines is reduced, the equivalentinductance value under the same line length is increased, and the synthesis circuit can work in the frequency band of 9 kHz-100 MHz at the same time. The problem that low frequency and high frequencyof an existing high-power synthesizer cannot be compatible is solved, and the problems that synthesis efficiency is reduced due to impedance mismatch, and a synthesized power amplifier is unstable areavoided. Therefore, the method is suitable for popularization and application.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular, to a high-power synthesizer and a synthesis method covering 9 kHz to 100 MHz. Background technique [0002] RF power amplifier is an important part of communication and test system. Different systems have corresponding requirements for working bandwidth and output power. Common wireless communication involves the frequency band from 1MHz to 6GHz, and the average power is in the order of tens of watts; for application scenarios such as remote warning and radio frequency testing, the covered frequency starts from a few kHz, and the corresponding power ranges from a few hundred watts to tens of kilowatts. Not waiting. One way to obtain high-power output is a power synthesizer. When the frequency coverage needs to span from 9kHz to 100MHz, a transformer-based synthesis technology needs to be considered. [0003] The basic principle of transformer-based synthesis technology i...

AI Technical Summary

Problems solved by technology

[0019] The purpose of the present invention is to provide a high-power combiner covering 9kHz to 100MHz, which mainly solves the problem that the low frequency and high frequency of the existing power combiner are not compatible

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