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A Near-Field Beam Focusing Millimeter-Wave Dual-Reflector Antenna

A near-field beam, dual-reflector technology, applied to antennas, electrical components, etc., can solve the problem of small distance range, and achieve the effect of increasing the distance range, increasing the near-field gain of the antenna, and improving the efficiency of the antenna

Active Publication Date: 2017-01-25
中久安特装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The beam radiated by the mouth surface field is focused to the design area in the near field, which improves the axis power density in the near field area, and solves the problem that the maximum value of the axis power density is low in some applications of the millimeter wave near field and the distance to reach the effective power threshold Insufficient range is too small

Method used

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  • A Near-Field Beam Focusing Millimeter-Wave Dual-Reflector Antenna
  • A Near-Field Beam Focusing Millimeter-Wave Dual-Reflector Antenna
  • A Near-Field Beam Focusing Millimeter-Wave Dual-Reflector Antenna

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Embodiment Construction

[0022] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0023] Such as figure 2 As shown, the system schematic diagram of the dual-reflector antenna described in the present invention, the near-field beam focusing millimeter-wave antenna system is composed of three main components: a feed source, a sub-reflector and a main reflector, and the feed is reflected by the sub-reflector After being reflected by the main reflector, the surface field distribution of the main emitter is perpendicular to the exit direction of the feed source, and the axis of the radiation beam of the surface field and the axis of the feed source can form any angle.

[0024] In this embodiment, a set of near-field beam-focusing millimeter-wave antennas with an aperture of 342.4 mm is designed, which is a Cassegrain antenna. image 3 is the longitudinal profile of the antenna...

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Abstract

The invention discloses a millimeter-wave dual reflector antenna capable of focusing a near-field wave beam. The antenna comprises a main reflector, an auxiliary reflector and a feed source, wherein a wave beam emitted by the feed source is reflected by the auxiliary reflector to the main reflector, and then emitted; a curved surface of the main reflector is a revolution paraboloid; and a central point of the main reflector is located at an intersection point of an emitting central axis of the auxiliary reflector and an axis of a radiation wave beam. The antenna is simple in structure and mature to process; the power density of a near-field region axis of the antenna is improved; the maximum power density of the axis is improved greatly under the same input power; a distance range of an effective power threshold is expanded; the efficiency of the antenna is improved; and a near-field gain of the antenna is increased.

Description

technical field [0001] The invention relates to the technical field of millimeter-wave antennas, in particular to a millimeter-wave double-reflection-surface shaped antenna whose radiation beams can be focused in a near-field area. Background technique [0002] The dual-reflector antenna consists of three parts: the main reflector, the sub-reflector and the feed, including Cassegrain, Gregory and ring-focus antennas. Compared with other antennas, it has the characteristics of low sidelobe, low cross polarization, and high gain. It has been widely used in precision tracking and measurement radars in missile ranges since the 1960s. Such as the AN / FPQ-6 radar and Qudex radar in the United States, and the JLA-1 in France. At the same time, compared with the centimeter wave band, the feeder system working in the millimeter wave frequency band has a large loss. In order to shorten the feeder line of the feed source, a general high-power millimeter wave system uses a double reflec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q19/19H01Q15/16
Inventor 薛长江余川孟凡宝屈劲徐刚施美友陈世韬
Owner 中久安特装备有限公司
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