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P-band broadband high-isolation double circularly-polarized thin-film array antenna

A high-isolation, array antenna technology, applied in the field of antennas, can solve the problems of large VSWR fluctuations and heavy weight, and achieve the effects of reducing parasitic radiation, light weight, and reducing storage volume and weight

Inactive Publication Date: 2015-08-19
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After research, the array antenna is a conventional metal reflector with a heavy mass. At the same time, the voltage standing wave ratio fluctuates greatly in the range of 440MHz to 480MHz, and the bandwidth of the voltage standing wave ratio is less than 1.5 is only 80MHz.

Method used

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  • P-band broadband high-isolation double circularly-polarized thin-film array antenna
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  • P-band broadband high-isolation double circularly-polarized thin-film array antenna

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing and embodiment the present invention will be further described: the present embodiment is implemented under the premise of the technical solution of the present invention, has provided detailed implementation and specific operation process, but protection scope of the present invention is not limited to Examples described below.

[0024] Such as figure 1 As shown, the present invention provides a broadband high-isolation dual circularly polarized film array antenna with an overall size of 2.4m×3.6m×0.16m (length×width×height). This embodiment includes: a parasitic patch layer (1), a radiation patch layer (2), a honeycomb cardboard medium layer (3), and a gridded metal reflector layer (4).

[0025] Such as figure 2 As shown, the parasitic patch layer (1) described in this embodiment contains 6×8 square patch units, and the initial size of the parasitic patch is according to the formula After being optimized by the full-...

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Abstract

The invention belongs to the field of communication technology and specifically relates to a P-band broadband high-isolation double circularly-polarized thin-film array antenna. The array antenna successively comprises, from top to bottom, a parasitic patch layer, a radiation patch layer, a cellular cardboard dielectric layer having a supporting effect, and a rasterized metallic reflecting plate layer. Each of the top surface of the parasitic patch layer and the top surface of the radiation patch layer is equipped with M*N square copper patches. The top surface of the cellular cardboard dielectric layer is a ground layer and M*N pairs of vertical H-shaped slits are etched on the top surface of the cellular cardboard dielectric layer. The bottom surface of the cellular cardboard dielectric layer is a feed network layer. A feed network is formed by M 3dB bridges and M pairs of one-to-eight T-shaped power dividers which are connected. A signal is transmitted via the feed network and is coupled to the radiation patches and the parasitic patches via the H-shaped slits. The rasterized metallic reflecting plate layer is arranged at a position under the feed network layer and a quarter wavelengths away from the feed network layer. The array antenna is a flexible foldable and deployable structure, decreased in weight, increased in bandwidth, and capable of achieving left-hand circular polarization and right-hand circular polarization.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a P-band broadband high-isolation double circularly polarized film array antenna. Background technique [0002] With the continuous development of communication technology, people have put forward higher requirements for communication quality. For example, in the case of severe multipath, congestion and interference, people hope to maintain a good communication quality. This requires the array antenna to have very high bandwidth and strong anti-interference ability. However, the general microstrip array antenna has a narrow bandwidth and weak anti-interference ability. At the same time, due to the long signal wavelength of the P-band, the conventional design size is too large, which makes the overall weight of the array antenna too heavy to meet the needs of modern communication. Therefore, designing a broadband circularly polarized microstrip array antenna with excellent perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/06H01Q1/36
Inventor 杨国敏张福恒金亚秋
Owner FUDAN UNIV
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