Dielectric loaded wideband miniature dual circularly polarized antenna

A dual circular polarization and dielectric loading technology, applied to antennas, electrical components, etc., can solve the problems of low power capacity, narrow operating frequency band, and low gain when the microwave band circularly polarized antenna has wide beam coverage, so as to maintain consistency , the effect of wide bandwidth

Inactive Publication Date: 2013-04-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the above-mentioned defects of the prior art, the present invention solves the problems of low gain, narrow operating frequency band, and low power capacity when the microwave band circularly polarized antenna covers a wide beam, and can provide a stable working in the microwave band wide frequency band, low dwell Wave ratio, high gain, large power capacity, compact structure, low cost, small size, good consistency medium-loaded wide-beam dual circularly polarized antenna

Method used

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  • Dielectric loaded wideband miniature dual circularly polarized antenna
  • Dielectric loaded wideband miniature dual circularly polarized antenna
  • Dielectric loaded wideband miniature dual circularly polarized antenna

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Embodiment

[0041] Such as figure 1 As shown, the medium-loaded broadband miniaturized dual circularly polarized antenna includes a dual circularly polarized radiator 1 and a frustum reflector 2;

[0042] Such as figure 2 As shown, the dual circularly polarized radiator 1 includes a medium 3, a square waveguide 4, a stepped partition 5, and coaxial joints 6, 7; the medium 3 is polytetrafluoroethylene, which is a high temperature resistant , weather-resistant, low-loss, low-cost dielectric material, and easy to process and shape, its dielectric constant is about 2.1;

[0043] The main body of the dual circularly polarized radiator 1 is a clapboard circular polarizer based on a metal waveguide; the metal part of the dual circularly polarized radiator 1 is processed in two parts, and they are installed together. The two sides of the dual circularly polarized radiator 1 are respectively connected to the The coaxial joints 6 and 7 are fixed together;

[0044] A part of the medium 3 is fill...

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Abstract

The invention relates to a dielectric loaded wideband miniature dual circularly polarized antenna, in particular to a dual circularly polarized antenna which is applied to emit and receive dual circularly polarized waves and wide in frequency band, low in standing wave, high in gain and large in power capability. The dielectric loaded wideband miniature dual circularly polarized antenna comprises a dual circularly polarized radiator (1) and a frustum reflector (2), the dual circularly polarized radiator (1) comprises a medium (3), a square waveguide (4), a step partition (5) and coaxial joints (6 and 7), and the medium is teflon. A partition circular polarizer is used to directly feed, and signals are radiated into the space through dielectric loading and reflection of the reflector, so that good standing-wave characteristics are guaranteed while wave beams are widened, gain and axial ration within a range of pitch angle of + / -65 degrees are guaranteed to meet requirements, and bandwidth is wide. In addition, a symmetric structure is adopted, so that radiating performances of left and right rotating circularly polarized waves are guaranteed to be consistent.

Description

technical field [0001] The invention relates to a medium-loaded broadband miniaturized dual circularly polarized antenna, in particular to a dual circularly polarized antenna with wide frequency band, low standing wave, high gain and large power capacity, which is applied to transmitting and receiving dual circularly polarized waves . Background technique [0002] In recent years, dual circularly polarized antennas have been more and more widely used in satellite navigation, communication systems, radar, and electronic countermeasures, and their role has become more and more important; circularly polarized antennas can accept any polarized line Polarized waves improve the ability of the antenna to receive signals; the advantage of dual circularly polarized antennas is that one antenna can transmit and receive left-handed circularly polarized waves and right-handed circularly polarized waves. Interference between ports; in addition, it can achieve polarization diversity rece...

Claims

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Application Information

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IPC IPC(8): H01Q13/00H01Q15/24H01Q19/10
Inventor 刘埇司黎明周凯水孝忠卢宏达朱思衡倪鸿宾吕昕
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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