Microwave millimeter wave self-loading multi-orthogonal filter capable of inverting phase

Abstract

The invention provides a microwave millimeter wave self-loading multi-orthogonal filter capable of inverting a phase. The microwave millimeter wave self-loading multi-orthogonal filter capable of inverting the phase comprises a directional coupler and two microwave millimeter wave filters. The directional coupler comprises two broadside coupled strip lines which are of a double-spiral structure and located on different parallel planes, and the directional coupler further comprises a tantalum resistor. Six levels of parallel resonance units are arranged in each microwave millimeter wave filter, wherein the first-level parallel resonance unit close to the directional coupler is connected with the directional coupler through an input inductor. The microwave millimeter wave self-loading multi-orthogonal filter capable of inverting the phase is small in size, high in reliability, excellent in electrical performance, good in batch consistency, stable in temperature performance and capable of outputting four lines of constant-amplitude multi-orthogonal signals with phases capable of being reversed, and meets various demands.

Description

1. Technical field [0001] The invention relates to a filter, in particular to a microwave and millimeter wave self-loading multi-orthogonal invertible filter. 2. Background technology [0002] In recent years, with the rapid development of miniaturization of mobile communication, satellite communication and national defense electronic systems, high performance, low cost and miniaturization have become the development direction of the microwave / radio frequency field. The performance, size and reliability of microwave filters Both sex and cost have put forward higher requirements. In some state-of-the-art defense equipment, the frequency bands used are quite crowded now, so cutting-edge equipment such as satellite communications are developing towards the millimeter wave band, so the microwave millimeter wave band filter has become the key electronic component coupler in the receiving and transmitting branches of this band It has always been an important component in various ...

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Problems solved by technology

[0004] In the current situation, the output of the directional coupler is two columns of equal-amplitude signals with a phase difference of 90°. The phase difference is not rich enough to meet the needs of many situations.

At the same time, the output of the balanced filter is two columns of equal-amplitude signals with a phase difference of 180°. Similarly, the phase difference is not rich enough

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