Wilkinson power divider with low insertion loss characteristic

Abstract

The invention discloses a Wilkinson power divider with a low insertion loss characteristic. The Wilkinson power divider comprises a dielectric layer, a signal metal layer attached to a side of the dielectric layer, and a metal ground layer attached to the other side of the dielectric layer. The signal metal layer comprises a microwave transmission branch, an input microstrip line, an isolation resistor and two output microstrip lines, wherein the input microstrip line can input a microwave signal; the microwave transmission branch is electrically connected to the input microstrip line and is divided into a branch 1 and a branch 2; the output microstrip line 1 and the output microstrip line 2 are electrically connected to the branch 1 and the branch 2 respectively; the isolation resistor iselectrically connected between the branch 1 and the branch 2; an insertion loss improving microstrip branch 1 and an insertion loss improving microstrip branch 2 are electrically connected between the branch 1 and the output microstrip line 1 and between the branch 2 and the output microstrip line 2 respectively. The Wilkinson power divider has a compact structure and can reduce the loss.

Description

technical field [0001] The invention relates to the technical field of power splitters, in particular to a low insertion loss Wilkinson power splitter. Background technique [0002] In most microwave radio frequency systems, power dividers have a wide range of applications, such as microwave power sensors, phased arrays, solid-state power combiners, and many other circuits. [0003] In power splitter design, there are two most commonly used power splitters, namely Wilkinson power splitter and Gysel power splitter, among which Wilkinson power splitter has been more widely used. Because the characteristic impedance and electrical length of each microstrip line of the Wilkinson power divider can be quickly calculated by the odd-even mode method, and it has good broadband characteristics and low insertion loss, so it is widely used in practice. However, the Wilkinson power splitter itself has a shortcoming. If you want to obtain a Wilkinson power splitter with low loss characte...

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Problems solved by technology

However, the Wilkinson power splitter itself has a shortcoming. If you want to obtain a Wilkinson power splitter with low loss characteristics within the working bandwidth, the insertion loss will gradually deteriorate in a wider frequency range. Cascading is often used. Design in a certain way, so this increases the circuit size to a certain extent, and also increases the design and processing cost needlessly

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