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A Highly Directional Rectangular Waveguide Directional Coupler

A directional coupler and rectangular waveguide technology, applied in waveguide-type devices, circuits, connecting devices, etc., can solve problems such as poor directivity and large measurement signal errors, and achieve high isolation, improved accuracy, and easy implementation.

Active Publication Date: 2021-08-17
INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a highly directional rectangular waveguide directional coupler to solve the problem of large measurement signal errors caused by poor directivity of existing directional couplers

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  • A Highly Directional Rectangular Waveguide Directional Coupler
  • A Highly Directional Rectangular Waveguide Directional Coupler
  • A Highly Directional Rectangular Waveguide Directional Coupler

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Embodiment Construction

[0035] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0036] The directivity of the existing rectangular waveguide directional couplers is generally not very high, which cannot meet the requirements of high-precision measurement and control, especially in the workplace where the load changes drastically. With the change of the reflected power amplitude and phase position, the directional The measurement value of the sampling signal of the coupler will fluctuate greatly, resulting in a large measurement error. For this reason, this application proposes a high directivity rectangular waveguide directional coupler, the directional coupler composed o...

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Abstract

The invention relates to a rectangular waveguide directional coupler with high directivity, belongs to the technical field of microwave devices, and solves the problem of large measurement signal errors caused by poor directivity of the existing directional coupler. The directional coupler includes a rectangular waveguide and a plurality of coupling heads; the plurality of coupling heads are sequentially arranged on a wide surface of the rectangular waveguide according to the power transmission direction of the rectangular waveguide; wherein, each coupling head includes two ports perpendicular to the wide surface; The rectangular waveguide and any coupling head form a four-port network; the two ends of the rectangular waveguide are the input port and the output port of the four-port network, and the two ports of the coupling head are the coupling port and the isolation port of the four-port network. The measurement of transmission power is realized, the directivity index is high, and it has high practical value.

Description

technical field [0001] The invention relates to the technical field of microwave devices, in particular to a high-directivity rectangular waveguide directional coupler. Background technique [0002] The directional coupler is one of the most commonly used components in the microwave system, especially in the microwave power measurement system, it is often necessary to use the directional coupler to couple the power signal to the range that the measurement system can measure, and then measure the signal accurately and analysis. [0003] The directivity of existing rectangular waveguide directional couplers is generally not very high. Generally, the technical index of products manufactured by foreign manufacturers is 30dB, which cannot meet the needs of high-precision measurement and control, especially in the workplace where the load changes drastically. The magnitude of the power and the change of the phase position will cause large fluctuations in the measured value of the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/18
CPCH01P5/18
Inventor 李健张沛林海英马强黄彤明罗元力孟繁博赵发成乔际民
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACAD OF SCI
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