A Miniaturized Phase Shift Equalizer Based on Wilkinson Power Divider

Abstract

The invention discloses a miniaturized phase-shift equalizer based on a Wilkinson power divider, which includes a microstrip circuit layer, a dielectric layer and a metal ground layer stacked sequentially from top to bottom, and the microstrip circuit layer includes unequal Wilkinson power divider, microstrip phase-shifting line, unequal Wilkinson power combiner and matching microstrip connection line, the unequal Wilkinson power divider and unequal Wilkinson power combiner It is connected through a microstrip phase-shifting line and a matching microstrip connecting line. The equalizer realized by the invention has the advantages of simple structure, small volume, large equalization amount, novel structure and good standing wave performance.

Description

technical field [0001] The invention belongs to the technical field of microwave and millimeter wave power devices, and in particular relates to a miniaturized phase-shift equalizer based on a Wilkinson power divider. Background technique [0002] It is usually difficult for high-power devices such as traveling wave tubes to ensure flat gain in a wide frequency band, and an additional equalization network needs to be added to achieve a flat output at the terminal of the power device. The gain equalizer is a network that can be used to correct amplitude distortion. It is usually placed between the traveling wave tube and the pre-stage solid-state driver module. The equalization curve is determined according to the input curve corresponding to the output power of the solid-state driver module and the flat output of the traveling wave tube. The current equalizer generally adopts a passive structure, and there are three types commonly used: microstrip type, waveguide type and co...

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Problems solved by technology

[0003] The traditional coaxial and waveguide gain equalizers have the advantages of high power, flexible adjustment, and low loss. They were widely used in the early days, but they were limited by their large size, relatively complicated tuning mechanical structure, poor mechanical stability, and difficulty in matching with Due to the shortcomings of microwave and millimeter wave circuit integration in planar structure, it is less used

The microstrip equalizer belongs to the planar transmission line structure type, which has the advantages of flexible circuit, small size, light weight, and easy integration with solid-state circuits. The disadvantages are that as the frequency increases, the loss increases, the dispersion is serious, and the Q value is not high. It is difficult to achieve a large amount of equalization in a narrow band

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