Dual-band and dual-polarization millimeter wave feed source

A dual-polarization, millimeter-wave technology, applied in the field of target detection, can solve problems such as unbearable dielectric loss, and achieve the effect of simple structure

Active Publication Date: 2015-10-14
ANHUI SUN CREATE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if this method is used in the W frequency band, the dielectric loss is unbearable

Method used

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  • Dual-band and dual-polarization millimeter wave feed source
  • Dual-band and dual-polarization millimeter wave feed source
  • Dual-band and dual-polarization millimeter wave feed source

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Embodiment

[0039] see figure 1 , the dual-frequency dual-polarized millimeter-wave feed consists of a radiating end, a Ka-band quadrature-mode coupler and a W-band quadrature-mode coupler. Wherein, the radiating end is composed of the horn body 1 and the Ka-band waveguide 2 connected in sequence, and is both the radiating end of the Ka-band and the radiating end of the W-band. see figure 2 , the horn body 1 is a vertical corrugated conical horn, and four corrugated grooves symmetrical along the central axis of the horn body are arranged in the body.

[0040]The Ka-band orthogonal mode coupler is composed of a W-band multimode horn, a Ka-band first feeding waveguide 5 and a Ka-band second feeding waveguide 6 . see image 3 , the W-band multimode horn is composed of Ka-band waveguide 2, transition cone 4 and W-band waveguide 3 connected in sequence; the small-diameter end of the horn body 1 is connected to one end of Ka-band waveguide 2, and the other end of Ka-band waveguide 2 One en...

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Abstract

The invention provides a dual-band and dual-polarization millimeter wave feed source which comprises a radiation end, a Ka-band orthogonal mode coupling and a W-band orthogonal mode coupling. The radiation end and the couplings use a waveguide structure. Dual bands and dual polarization are realized through single caliber. A high band is located in the middle. Low bands carry out feeding from sides. A high-band dual-mode feed source is connected with an external orthogonal mode coupling. The low bands carry out feeding from a circular waveguide segment with increasing diameter. The dual-polarization feed source has a simple main structure, and breaks through the technical problems of the dual-band and dual-polarization millimeter wave feed source. In order to prevent crosstalk and improve the feed source performance, a filter is added on an output rectangular waveguide segment of a low-band orthogonal mode coupling. The filter is a low-pass filter which has low-band passband and high-band stop-band. Two kinds of polarization exit waveguide of two bands are respectively located in four directions of a major radiation waveguide axis, are in pairwise orthogonal, are staggered up and down, are not located in the same level, and are easily connected with rear end waveguide.

Description

technical field [0001] The invention belongs to the technical field of target detection, and in particular relates to a millimeter-wave feed source applied to a Cassegrain reflector antenna of a dual-frequency millimeter-wave cloud measuring radar. Background technique [0002] The dual-frequency dual-polarized millimeter-wave feed is used as the primary radiator of the dual-frequency millimeter-wave cloud radar Cassegrain reflector antenna to provide effective illumination for it. Dual-frequency millimeter-wave cloud radar is the development and extension of millimeter-wave cloud radar technology, and it is the product of refined detection requirements. [0003] Early dual-wavelength detection used dual radars, that is, two radars with different frequency bands were turned on at the same time to detect the same target. The biggest problem with this method is that it is difficult to ensure that the two radars detect the same target, and the amount of equipment is large, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/55H01Q13/02
Inventor 胡卫东金秀梅杨邦宏任翠锋侯艳茹
Owner ANHUI SUN CREATE ELECTRONICS
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