A millimeter-wave terahertz waveguide duplexer

Abstract

The invention discloses a millimeter-wave terahertz-wave waveguide diplexer, and belongs to the field of millimeter-wave and terahertz-wave radars. The diplexer comprises a T type waveguide junction and a medium. The T type waveguide junction is of a T type hollow housing structure, one end of a horizontal part of the T type waveguide junction forms a trapezoid transition structure from big to small by means of horizontal extension. End ports of the horizontal part and a vertical part of the T type waveguide junction are respectively rectangular. The end port on one end of the horizontal part is a port I, the end port of the trapezoid transition structure is a port III, and the port end of the vertical part is a port II. The medium is a rectangular structure with a metal thin sheet. The length of the medium is identical with the length of the horizontal part of the T type waveguide junction, and the width and the height of the medium are identical with the width and height of the port II. The medium penetrates through the inner part of the T type waveguide junction, and is in contact with and fixed to the inner surface of the T type waveguide junction. According to the invention, the millimeter-wave terahertz-wave waveguide diplexer is capable of solving the problem that co-aperture transmission of millimeter waves and terahertz waves is difficult.

Description

technical field [0001] The invention belongs to the field of millimeter wave and terahertz wave radar, in particular to a millimeter wave terahertz wave waveguide duplexer. Background technique [0002] Clouds are an important factor affecting the radiation balance of the earth-atmosphere system, and are one of the key meteorological elements affecting global meteorology and climate change. The accurate description of cloud distribution and changes is an important science to improve the ability to cope with climate change and improve weather forecasting. question. [0003] Millimeter-wave radar is an effective method for observing clouds at present. It uses the Rayleigh scattering characteristics of cloud particles on electromagnetic waves, and analyzes the microscopic and macroscopic characteristics of clouds through the radar echoes of clouds. Compared with centimeter-wave radar, millimeter-wave radar has higher detection sensitivity to cloud particles, and it can detect ...

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Problems solved by technology

[0006] In view of this, the present invention provides a millimeter-wave terahertz waveguide duplexer, which can not only overcome the requirement that the working frequency band of the current dual-frequency / multi-frequency common-aperture antenna cannot meet the requirements of the high-frequency band, but also overcome Difficulty in common-aperture transmission of terahertz waves

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