Lange bridge

Abstract

The invention provides a Lange bridge. The Lange bridge comprises a substrate, wherein a microstrip line circuit is etched on the microstrip substrate, and gold wires play a bridging function. The microstrip line circuit comprises a first input port, a second input port, a pre-stage coupling part, a transition part, a rear-stage coupling part, a first output port and a second output port. The preceding-stage coupling part sequentially comprises a first coupling branch, a second coupling branch, a preceding-stage switching branch, a third coupling branch and a fourth coupling branch. The firstcoupling branch and the fourth coupling branch are respectively bridged with the pre-stage switching branch through gold wires; the head end of the second coupling branch is bridged with the tail endof the third coupling branch through a gold wire; the tail end of the second coupling branch is bridged with the head end of the third coupling branch through a gold wire; the rear-stage coupling partsequentially comprises a fifth coupling branch, a sixth coupling branch, a rear-stage switching branch, a seventh coupling branch and an eighth coupling branch, and the problem that on the basis thata low-dielectric-constant material is adopted, a 3dB Lange bridge is difficult to achieve is solved through the designed Lange bridge structure.

Description

technical field [0001] The invention relates to the technical field of communication passive devices, in particular to a Lange bridge. Background technique [0002] Bridges are often used for power synthesis and power distribution. Commonly used bridges are implemented with stripline systems, which are inconvenient to integrate in microstrip circuits. To achieve 3dB bridges in microstrip planes, lange bridges are very good One of the options, the usual 3dBLange bridges are designed and implemented using high dielectric constant materials, such as ceramic materials, but the insertion loss of high dielectric constant materials is relatively large. However, using conventional materials such as RT5880 low-dielectric constant materials as lange bridges can reduce insertion loss, but it is difficult to achieve 3dB coupling due to insufficient coupling. Contents of the invention [0003] The purpose of the present invention is to provide a Lange bridge to solve the problem that ...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is: for the above-mentioned existing problems, provide a kind of Lange electric bridge, to solve adopting low dielectric constant material, the problem that Lange electric bridge is difficult to realize 3dB coupling

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