Design method for reverse class-F power amplifier based on 3/4 spiral virtual ground structure
A technology of a power amplifier and a design method, which is applied in the directions of power amplifiers, improved amplifiers to improve efficiency, etc., can solve the problems of small area, low cost and high work efficiency of inverse class F power amplifiers, and achieves improvement of work efficiency and output power, saving Plate making costs and the effect of improving work efficiency
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[0035] Below in conjunction with accompanying drawing description, the scheme of the present invention is described in detail, and concrete steps are as follows:
[0036] refer to figure 1 , 3, an inverse class F power amplifier based on a 3 / 4 spiral virtual ground structure, including an input matching circuit, a power amplifier circuit, a harmonic control circuit and an output matching circuit sequentially connected on a microstrip line. The harmonic control circuit includes a 3 / 4 spiral virtual ground structure located below the microstrip line, the virtual ground structure is formed by cutting 1 / 4 of the complete spiral virtual ground structure; the 3 / 4 spiral virtual ground structure comprising a two-part helical structure that is symmetrical and connected along the microstrip line axis,
[0037] Part of the spiral structure is that a ground wire is divided into eight segments a~h connected accordingly, all of which are parallel to the microstrip line, and the width of t...
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