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Orthogonal-mode coupler

An orthogonal mode coupler and coupler technology, applied in the field of couplers, can solve problems such as the difficulty of using a dual-polarized array antenna to feed the network, the large size of the orthogonal mode coupler, and the limitations of the orthogonal mode coupler, and achieve Compact structure, eliminating the need for welding process, suppressing the effect of high-order mode

Active Publication Date: 2015-05-27
BEIJING RES INST OF TELEMETRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional orthogonal mode couplers usually use complex structures such as inductance rods, diaphragms, and gradual impedance transformation sections for impedance matching, which makes the orthogonal mode coupler large in size and complex in structure.
In the case of strict limitations on the space size of the system, the application of the traditional orthogonal mode coupler is limited, especially it is difficult to be used in the feed network of the dual-polarized array antenna

Method used

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Examples

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Embodiment Construction

[0030] An orthogonal mode coupler, the coupler includes a square waveguide 1, a side arm waveguide 2, an impedance adjustment block 4 and a straight arm waveguide 6;

[0031] The square waveguide 1 is a metal waveguide with a square cross-section. The surrounding and bottom surface of the square waveguide 1 are metal walls. There is a side arm coupling slit 3 on one of the sides. The side arm coupling slit 3 is a rectangular slit with a thickness of 0.5-1.5 mm, preferably 1 mm; the bottom surface of the square waveguide 1 is provided with a straight-arm coupling slot 5, the straight-arm coupling slot 5 is a rectangular slot, and the thickness of the slot is 0.5-1.5 mm, preferably 1 mm;

[0032] The impedance adjustment block 4 is a cuboid metal block, the bottom surface of the impedance adjustment block 4 is connected to the bottom surface of the square waveguide 1, and the bottom surface of the impedance adjustment block 4 coincides with the center line of the protrusion direc...

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Abstract

The invention relates to an orthogonal-mode coupler, and belongs to the technical field of couplers. The orthogonal-mode coupler comprises a square waveguide, a side arm waveguide, an impedance adjusting block and a straight arm waveguide, wherein the side arm waveguide and the square waveguide perform electromagnetic coupling through a side arm coupling slit, and the straight arm waveguide and the square waveguide perform electromagnetic coupling through a straight arm coupling slit. According to the invention, a wide-seam structure is adopted to realize impedance matching, complex structures such as an inductance rod, a diaphragm, a gradient impedance transformation segment, which are used for matching, in a traditional orthogonal-mode coupler are omitted, so that the structure of the orthogonal-mode coupler provided by the invention is more compact.

Description

technical field [0001] The invention relates to an orthogonal-mode coupler, in particular to a compact orthogonal-mode coupler, which can be used alone as a microwave device, and can also be used for a dual-polarization feed network of a dual-polarization array antenna, and belongs to the technical field of couplers . Background technique [0002] In some dual-polarized electronic systems, quadrature-mode couplers are often required for polarization discrimination. Especially in large-capacity communication systems, it can solve the problem of frequency reuse. Channels with different polarizations and isolated from each other can be used on the same frequency, which can accommodate the maximum number of channels. Traditional orthogonal-mode couplers usually use complex structures such as inductance rods, diaphragms, and gradually changing impedance transformation sections to perform impedance matching, which makes the orthogonal-mode coupler large in size and complex in st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/12
Inventor 史永康王奇伟张海燕
Owner BEIJING RES INST OF TELEMETRY
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