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Ka-waveband double-reflection circularly-polarized one-dimensional 360 DEG covering antenna

A technology covering antennas and double reflections, applied to antennas, electrical components, etc., can solve the problems of high gain, low gain, low out-of-roundness, etc., and achieve the effect of improving radiation efficiency, good standing wave characteristics, and wide bandwidth

Inactive Publication Date: 2013-01-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned defects of the prior art, the present invention solves the problems of difficulty in achieving one-dimensional 360° coverage, poor out-of-roundness, and low gain of millimeter-wave circularly polarized antennas, and can provide a compact, low-cost, small-volume, energy-efficient Circularly polarized one-dimensional 360° coverage antenna that works stably in the millimeter wave band with broadband, low VSWR, high gain, and low out-of-roundness

Method used

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  • Ka-waveband double-reflection circularly-polarized one-dimensional 360 DEG covering antenna
  • Ka-waveband double-reflection circularly-polarized one-dimensional 360 DEG covering antenna
  • Ka-waveband double-reflection circularly-polarized one-dimensional 360 DEG covering antenna

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Depend on figure 1 It can be seen that the present invention includes a main reflector 1, a secondary reflector 2, a circular polarizer 3, rigid support foams 4, 5, 6 and a flange 7; the circular polarizer 3 and the secondary reflector 2 are designed and processed in one piece , the bottom of the circular polarizer 3 and the flange 7 are welded together. The main reflective surface 1 is placed directly above the secondary reflective surface 2 and supported by rigid support foams 4, 5, 6. Rigid Foam 4, Rigid Support Foam 5 and Rigid Support Foam 6 are made into figure 1 The shape shown supports the primary reflector 1 and seals the primary reflector 1 and the secondary reflector therein. The rigid support foam 4 , the rigid support foam 5 and the rigid support foam 6 are low-loss, fire-resistant dielectric materials that can ...

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Abstract

The invention discloses a Ka-waveband double-reflection circularly-polarized one-dimensional 360 DEG covering antenna which adopts a double-reflection rotational symmetry structure and consists of a rotational parabolic reflector, a rotational table reflector, a circular polarizer, hard support foam and a flange. The rotational table reflector and the circular polarizer are processed integrally and arranged near a focus of the rotational parabolic reflector for feeding. An incident wave enters the circular polarizer through rectangular waveguide to form a circularly polarized wave, emitted to the rotational parabolic reflector and reflected by the rotational parabolic reflector and the rotational table reflector to realize 360DEG wave beam covering in a horizontal plane and minus 10 DEG to 30 DEG in a pitching plane. The one-dimensional 360 DEG covering antenna has the advantages of good electrical properties such as good non-circularity, great bandwidth, small echo and high gain, is compact in structure, low in cost, easy to process and applicable to vehicle-mounted communication systems.

Description

【Technical field】 [0001] The present invention relates to a Ka-band dual-reflection circularly polarized one-dimensional 360° coverage antenna, in particular to a circularly polarized one-dimensional 360° coverage antenna with wide frequency band, low standing wave, high gain, and low out-of-roundness, suitable for In a vehicle communication system. 【Background technique】 [0002] One-dimensional 360° coverage antennas are divided into four types: vertical and horizontal linear polarization and left-handed and right-handed circular polarization. Among them, the vertical linearly polarized one-dimensional 360° coverage antenna is the simplest, and a monopole or dipole antenna is often used. Because of its simple structure and processing, it can still be well used in the millimeter wave band. This is not the case for horizontally polarized one-dimensional 360° coverage antennas, which are most commonly used in bands below the microwave. The best out-of-roundness is the approx...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/19H01Q15/16
Inventor 刘埇吕昕孙厚军倪鸿宾赵海明
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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