Broadband broad-angle circular polarization overlapping microstrip antenna

A technology of microstrip antenna and circular polarization, applied in the direction of resonant antenna, radiating element structure, etc., can solve the problems of poor realization of antenna structure engineering, and achieve the expansion of axial ratio bandwidth and impedance bandwidth, good energy coupling, and improved etc. sexual effect

Active Publication Date: 2014-10-01
10TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This makes the engineering realization of the antenna structure poor, not to me

Method used

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  • Broadband broad-angle circular polarization overlapping microstrip antenna
  • Broadband broad-angle circular polarization overlapping microstrip antenna
  • Broadband broad-angle circular polarization overlapping microstrip antenna

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Embodiment Construction

[0027] refer to figure 1 , figure 2 . figure 1 A best implementation example of the cavity form stacked microstrip antenna of the present invention is described. The wide bandwidth angle circularly polarized stacked microstrip antenna includes a rectangular microstrip metal patch, a feeding probe 10, and a rectangular box surrounded by a covering layer dielectric plate 1, a supporting dielectric plate 3, and a bottom dielectric plate 5 in three dimensions. body. The rectangular microstrip metal patch includes an upper rectangular microstrip metal patch 9, a lower rectangular microstrip metal patch 9, and a lower rectangular microstrip metal patch, which are located on the upper and lower end surfaces of the rectangular box body, parallel to each other, and respectively attached to the inner side of the covering layer dielectric plate 1 and the bottom dielectric plate 5. Microstrip patch8. The supporting medium plate 3 surrounds the surrounding medium plate 1 and the botto...

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Abstract

The invention discloses a broadband broad-angle circular polarization overlapping microstrip antenna which is low in profile, wide in axial ratio and impedance bandwidth, and good in wide-angle axial ratio performance. According to the technical scheme, an upper-layer rectangular microstrip metal patch (9) serving as a parasitic radiator is attached under a covering layer dielectric slab (1), a lower-layer rectangular microstrip metal microstrip patch (8) serving as a driving radiator is attached to the upper portion of a bottom-layer dielectric slab (5), the upper-layer rectangular microstrip metal patch works at a high-frequency end in a resonance mode, and the lower-layer rectangular microstrip metal microstrip patch works at a low-frequency end in a resonance mode; a cavity with the dielectric slabs as walls is formed in the central area of a rectangular box body, the cavity area is filled with a dielectric body of which the dielectric constant is similar to that of the air, a feed probe (10) is fixedly connected with the lower-layer rectangular microstrip metal microstrip patch through a metallized via hole, the metallized via hole penetrates through the bottom-layer dielectric slab, and the diameter of the metallized via hole is larger than the feed probe. By means of the broadband broad-angle circular polarization overlapping microstrip antenna, a wider work bandwidth can be achieved.

Description

technical field [0001] The invention belongs to the technical field of microwave antennas, and relates to a stacked microstrip antenna based on a cavity, which is suitable as a unit antenna of a wide-band wide-angle scanning circularly polarized phased array antenna. Background technique [0002] Microstrip antennas have attracted widespread attention due to their small size, light weight, low profile, easy integration, low cost and good electrical performance. With the continuous increase of satellite communication, navigation, and mobile communication system services, the equipment is constantly developing in the direction of miniaturization, and the requirements for antenna volume, integration and working frequency band are also getting higher and higher. Low-profile antenna systems are required in many highly developed applications such as high-performance aircraft, satellites and global positioning systems, mobile communications and wireless communications that must con...

Claims

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Application Information

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IPC IPC(8): H01Q9/04H01Q1/38
Inventor 张剑何海丹张云蓝海邓金峰
Owner 10TH RES INST OF CETC
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