Harmonic power amplifying circuit with high efficiency and wide bandwidth and radio frequency power amplifier

Abstract

The invention is applicable to the field of radio frequency communication, and provides a harmonic power amplifying circuit with high efficiency and a wide bandwidth and a radio frequency power amplifier. The circuit comprises an input matching network, a transistor and an output matching network; a grid electrode of the transistor is connected with an output end of the input matching network, a drain electrode of the transistor is connected with an input end of the output matching network, and a source electrode of the transistor is grounded; the output matching network causes a lower sideband of the harmonic power amplifying circuit to work in a continuous inverse F amplification mode and causes an upper sideband of the harmonic power amplifying circuit to work in a continuous F amplification mode; and the output matching network and a parasitic network of the transistor form a low pass filter. According to the harmonic power amplifying circuit provided by the invention, due to the transition from the continuous inverse F power amplifier working mode to the continuous F power amplifier working mode, the efficiency of a continuous harmonic control power amplifier is effectively improved to be higher than 60%, a relative bandwidth is improved to be higher than 80%, and the harmonic impedance is simple to match and easy to realize.

Description

technical field [0001] The invention belongs to the field of radio frequency communication, and in particular relates to a high-efficiency and high-bandwidth harmonic power amplifying circuit and a radio frequency power amplifier. Background technique [0002] At present, the fifth-generation mobile communication system has increasingly strong requirements on the compatibility of communication standards, so the bandwidth requirements of RF power amplifiers are also getting higher and higher. At the same time, with the further development of the green economy, the market is also demanding the efficiency of power amplifiers Increasingly demanding. However, high-efficiency, high-bandwidth power amplifiers are generally designed mainly based on the structure of the class E power amplifier and the structure of the harmonic control class power amplifier. [0003] However, although the class E power amplifier has a simple structure and high efficiency, the further application of t...

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a high-efficiency and high-bandwidth harmonic power amplifier circuit, which aims to solve the problem that the existing power amplifier circuit cannot simultaneously achieve high efficiency and high bandwidth, and the harmonic impedance matching is easy

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