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Frequency selective surface element and frequency selective surface based on filter antenna

A frequency-selective surface and filtering antenna technology, which is applied to antennas, antenna parts, antenna grounding devices, etc., can solve the problems of thick surface section thickness, thick section thickness, and difficult processing, etc., to achieve improved selectivity, simple structure, The effect of improving the overall performance

Active Publication Date: 2021-06-15
广州智讯通信系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a frequency selective surface unit based on a filter antenna, which can solve the problems of thicker section thickness, complex structure and difficult processing of the frequency selective surface in the prior art.
[0005] The second object of the present invention is to provide a frequency selective surface based on a filter antenna, which can solve the problems in the prior art that the frequency selective surface section thickness is relatively thick, the structure is complex, and the processing is difficult.

Method used

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  • Frequency selective surface element and frequency selective surface based on filter antenna
  • Frequency selective surface element and frequency selective surface based on filter antenna
  • Frequency selective surface element and frequency selective surface based on filter antenna

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Embodiment 1

[0047] The present invention provides a first embodiment, a frequency selective surface unit based on a filter antenna. This frequency selective surface unit is also called a symmetrical frequency selective surface unit. The radiation zero point generated by the structure of the filter antenna itself is used to make the filter antenna operate at a specific frequency. Inactive down, the filter characteristic is achieved, generating out-of-band transmission zeros on the frequency selective surface. Wherein, since the frequency selective surface is composed of a plurality of frequency selective surface unit arrays, the out-of-band transmission zero of the frequency selective surface is also the out-of-band transmission zero of the frequency selective surface unit.

[0048] like Figure 2-6 As shown, the frequency selective surface unit based on filter antenna provided in this embodiment includes a first filter antenna, a second filter antenna, a floor 5 and a metal post 7 .

[0...

Embodiment 2

[0072] The present invention provides a second embodiment, a frequency selective surface unit based on a filter antenna, and the frequency selective surface unit is an asymmetrical frequency selective surface unit.

[0073] Wherein, the difference between the present embodiment and the first embodiment is that the first filter antenna and the second filter antenna are arranged asymmetrically.

[0074] Specifically, such as Figure 7-12 As shown, the asymmetric frequency selective surface includes a first filter antenna, a second filter antenna, a floor 5 and a metal post 7 .

[0075] One end of the metal post 7 is installed on the first filter antenna, the other end of the metal post 7 is installed on the second filter antenna, and the floor 5 is arranged between the first filter antenna and the second filter antenna.

[0076] Preferably, the floor 5 is provided with a sixth opening 53 . The metal post 7 passes through the sixth opening 53 , so that the first filter antenna,...

Embodiment 3

[0093] Preferably, the present invention also provides a frequency selective surface, which is composed of a plurality of filter antenna-based frequency selective surface unit arrays as provided in the first embodiment, or includes a plurality of element arrays as provided in the second embodiment Frequency-selective surface element array composition based on filter antennas.

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Abstract

The invention discloses a frequency selective surface unit based on a filter antenna, comprising a first filter antenna, a second filter antenna, a metal post and a floor; by installing one end of the metal post on the first filter antenna and the other end on the second filter antenna , and pass the metal post through the third opening set on the floor, so that the first filter antenna, the floor and the second filter antenna are sequentially arranged on the metal post; through the first filter antenna, the second filter antenna and the floor set Corresponding grooves use the radiation zero point of the filter antenna and / or the feeding circuit of the post-filter antenna to generate the out-of-band transmission zero point of the frequency selective surface, thereby improving the selectivity and overall performance of the frequency selective surface, and solving the problem of increasing the frequency in the prior art. When the transmission zero point of the frequency selective surface is generated by the coupling path and the resonator, the overall section of the frequency selective surface is enlarged, the structure is complicated, and the processing is difficult. The invention also discloses the frequency selective surface based on the filtering antenna.

Description

technical field [0001] The invention relates to a frequency selective surface, in particular to a filter antenna based frequency selective surface and a frequency selective surface. Background technique [0002] A frequency selective surface is a periodic structure with filtering properties, which has unique polarization selective properties, such as converting a linearly polarized incident wave into a circularly polarized wave, or converting a horizontally polarized incident wave into a vertically polarized wave wave etc. Based on the unique characteristics of frequency selective surfaces, frequency selective surfaces have been widely used in radar radomes, reflectors, polarizers, microwave sensors, spatial filters, etc. In practical applications, frequency selective surfaces are generally required to have high selectivity and low profile characteristics. The traditional frequency selective surface is usually a two-dimensional periodic array composed of patches and groove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00H01Q1/36H01Q1/48H01Q1/50
CPCH01Q1/364H01Q1/48H01Q1/50H01Q15/0013
Inventor 王世伟李银陈国文何瑶葛建华胡斌强袁素华朱刚黄冠龙
Owner 广州智讯通信系统有限公司