K and Ka dual-band orthogonal mode coupler

An orthogonal mode coupler and dual-band technology, applied in the field of communication, can solve the problems of frequency multiplexing in communication systems, increase the number of communication channels and system capacity, etc., achieve good electrical performance, eliminate welding process, and simple structure

Inactive Publication Date: 2020-03-27
NANJING UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of tapered narrow-band K and Ka dual-band orthogonal mode coupler, whic...

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  • K and Ka dual-band orthogonal mode coupler
  • K and Ka dual-band orthogonal mode coupler
  • K and Ka dual-band orthogonal mode coupler

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] Combine Figure 1 to Figure 6 , A K and Ka dual-band quadrature mode coupler, which is connected vertically through a vertical polarization channel and a horizontal polarization channel, using a vertical polarization wave to transmit the transmitted signal, and a horizontal polarization wave to transmit the received signal, using two polarizations Wave quadrature decoupling to achieve isolation between signals. The vertical polarization channel includes a common circular waveguide port (1), a rectangular step transition (4), a square waveguide (7), a stepped impedance matching section (6), and a transmitting port (2) which are connected in sequence, and their centers along the transmission direction The lines coincide.

[0027] The common circular waveguide port (1) uses BY190 standard circular waveguide flange. Compared with the rectangular waveguide, it...

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Abstract

The invention discloses a K and Ka dual-band orthogonal mode coupler, which is applied to the technical field of communication and aims to solve the problem of frequency reuse in a communication system and increase the number of communication channels and the system capacity. Through vertical connection of the vertical polarization channel and the horizontal polarization channel, vertical polarization waves are used for transmitting transmitted signals, horizontal polarization waves are used for transmitting received signals, and orthogonal decoupling of the two polarization waves is used forachieving isolation between the signals. The vertical polarization channel comprises a common circular waveguide port, a rectangular circular step transition, a square waveguide, a step impedance matching section and a transmitting port which are communicated in sequence, and the horizontal polarization channel comprises a receiving port and a coupling resonance window which are communicated in sequence. The invention has the advantages of simple structure, small volume, convenience in processing, high polarization isolation, small standing wave and insertion loss and other excellent electrical properties.

Description

Technical field [0001] The invention belongs to the field of communication technology, and specifically relates to a K and Ka dual frequency band orthogonal mode coupler. Background technique [0002] Orthogonal mode coupler (OMT) is a microwave component used to separate and mix two mutually orthogonal polarized waves. It is generally represented by three physical ports and is widely used in dual-polarized antenna feed networks. On the one hand, the orthogonal modes in the same frequency band can be separated or combined, so that two polarized channels can work simultaneously in the same frequency band, which solves the problem of frequency reuse. On the other hand, the two basic mode ports can be used as signal receiving and transmitting ends to realize the function of a duplexer. [0003] In 2018, Li Dongchao, He Shaolin, and Liu Yulong published "A design of a compact Ku-band quadrature mode coupler" in Chinese Journal of Radio Science. The standing wave of the two frequency b...

Claims

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Application Information

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IPC IPC(8): H01P5/16
CPCH01P5/16
Inventor 王晓青李颖
Owner NANJING UNIV OF SCI & TECH
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