Directional diagram reconfigurable wind-angle scanning antenna based on SSPP structure

A technology of wide-angle scanning and pattern, which is applied to the antenna, the structural form of the radiation element, the connection of the antenna grounding switch structure, etc., can solve the problem that the pattern is difficult to cover ultra-wide angles, etc., to improve end-fire performance and impedance matching , flexible switching effect
CN108767451AActive Publication Date: 2018-11-06SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2018-11-06

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Abstract

The invention provides a directional diagram reconfigurable wind-angle scanning antenna based on a SSPP structure. The antenna comprises a coplanar waveguide structure formed by two quasi-trapezoidalmetal sheets and a segment of elongated metal lead together, symmetrical zigzag SSPP metal transmission lines, a feed selection structure formed by two paths of metal lines on which three switches arewelded, a quadrilateral metal modulation unit, an end gradient zigzag structure and an SMA connector. The SMA connector is arranged on the center of the short side of the antenna dielectric plate andused for performing radio frequency excitation for the antenna. The SMA connector is welded on one side of the coplanar waveguide structure, and one side of the coplanar waveguide structure is accessed to the feed selection structure. The feed selection structure is controlled by three changeover switches and used for selecting the current line feeding in the symmetrical zigzag SSPP metal transmission lines from the coplanar waveguide structure. The quadrilateral metal is arranged on the symmetrical zigzag SSPP metal transmission lines. The end gradient zigzag structure is used for improvingthe bandwidth and the end-fire capacity of the antenna. The problem that the present frequency scanning antenna has difficulty to realize wide-angle scanning can be solved.
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Description

technical field

[0001] The present invention relates to an antenna, in particular to a low-profile ultra-wide-angle scanning antenna based on an artificial surface plasmon polariton (Spoof Surface Plasmon Polariton, SSPP for short) structure. Background technique

[0002] The importance of antennas in social life is growing day by day. The scanning antenna can switch the beam pointing to realize the tracking of the target. Because the frequency scanning antenna has different beam directions at different frequencies, it is widely used in radar, point-to-point communication, and satellite communication. However, the beam coverage of most frequency scanning antennas is limited, and it is impossible to achieve large-angle beam coverage. How to realize wide-angle scanning or even ultra-wide-angle scanning is a problem that researchers need to solve.

[0003] The frequency scanning antenna proposed in the prior art realizes a scanning range of about 20°, but the antenna has a c...

Claims

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