Microstrip to branch waveguide high isolation 3db power divider

Abstract

The invention discloses a microstrip-to-branch waveguide high-isolation 3dB power divider, which has a simple structure, high isolation and good standing waves. The present invention is realized through the following technical solutions: a microstrip line connected with a microstrip probe through a high-impedance line is fed into the microstrip layer on the ├-shaped dielectric layer substrate, and the T-shaped end of the dielectric substrate is mounted on the E-plane orthogonal branch In the groove body of the ├-shaped groove at the fixed end of the waveguide, the microstrip probe faces the carbonyl iron absorber wedge-shaped load-absorbing tip cone wedge surface, and the mirror-symmetrical step-matching waveguide and E-plane orthogonal branch with the arms on both sides of the flat-body waveguide The waveguide forms a microstrip-to-branch waveguide 3dB power divider. The signal enters from the input end of the microstrip line, transmits along the microstrip line, passes through a high-impedance line matching transition, and is coupled to the flat body waveguide branch waveguide through the microstrip probe. The output ports of the two power split waveguides of the ladder matching waveguide output two signals of equal amplitude and phase, and the carbonyl iron absorber wedge-shaped load is used for isolation impedance matching at the orthogonal branch waveguide port of the E plane.

Description

technical field [0001] The invention belongs to the field of microwave / millimeter waves, and in particular relates to a high-isolation 3dB power divider, which is mainly used in solid-state power amplifiers in satellite communication and measurement and control systems. Background technique [0002] A power splitter is a multi-port passive microwave network that divides the input signal power into equal or unequal power outputs, and is used for power distribution or power synthesis. Its performance directly affects the energy distribution and synthesis efficiency of the entire system. In a microwave circuit, in order to divide the power into two or more paths according to a certain ratio, a power divider is needed. The power divider is used in turn to be a power combiner, so usually the power divider / combiner is simply called a power splitter. Power dividers are widely used in the power amplifiers of modern microwave high-power solid-state transmitting sources, and power d...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of low isolation at the output port of the traditional T-type microstrip-to-waveguide power divider, the present invention aims at the deficiencies of the existing technology, and provides a simple structure, high isolation, high phase and amplitude balance, and resident Wave good microstrip to branch waveguide high isolation 3dB power divider

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