Truncation metasurface-loaded low-profile broadband high-gain omnidirectional surface-wave antenna

A super-surface and high-gain technology, which is applied in the direction of antenna, antenna grounding switch structure connection, radiation element structure, etc., can solve the problems of narrow bandwidth and low gain, and achieve the effect of increasing bandwidth, increasing antenna gain, and widening bandwidth

Inactive Publication Date: 2017-11-28
XIDIAN UNIV
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  • Claims
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Problems solved by technology

[0003] To sum up, the problems existing in the prior art are: the ...

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  • Truncation metasurface-loaded low-profile broadband high-gain omnidirectional surface-wave antenna
  • Truncation metasurface-loaded low-profile broadband high-gain omnidirectional surface-wave antenna
  • Truncation metasurface-loaded low-profile broadband high-gain omnidirectional surface-wave antenna

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, the truncated metasurface loaded low-profile broadband high-gain omnidirectional surface wave antenna provided by the embodiment of the present invention includes: metasurface 1, circular patch 2, truncated metasurface ring structure 3, metal floor 4, coaxial probe Needle 5 , first dielectric substrate 6 , dielectric bolt 7 , second dielectric substrate 8 .

[0025] A metasurface 1 composed of m×m periodic patch arrays, a first dielectric substrate 6, ...

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Abstract

The invention belongs to the technical field of antenna design, and discloses a truncation metasurface-loaded low-profile broadband high-gain omnidirectional surface-wave antenna. The antenna comprises a metasurface formed by m*m equivalent period patch units; the metasurface is printed on a first dielectric substrate; a circular patch and a truncation metasurface annular structure are printed on a second dielectric substrate; the truncation metasurface annular structure is loaded on the periphery of the circular patch; the first dielectric substrate is positioned above the second dielectric substrate; and the first dielectric substrate and the second dielectric substrate are isolated by air dielectric. Compared with the existing surface-wave antenna without loading the structure, the truncation metasurface annular structure converts electromagnetic energy below the circular patch into surface wave outside the circular patch, so that surface wave diffraction is increased, thereby improving the bandwidth and antenna gain; certain air dielectric exists between the dielectric substrates; and therefore, compared with the existing surface-wave antenna without loading the air dielectric structure, the circular patch can excite surface wave by air coupling, and the surface wave can be propagated along the metasurface.

Description

technical field [0001] The invention belongs to the technical field of antenna design, in particular to a low-profile broadband high-gain omnidirectional surface wave antenna that cuts off metasurface loading. Background technique [0002] The traditional monopole antenna has simple structure, vertical polarization, and omnidirectional pattern in the horizontal plane, and has been widely used in wireless communication systems. However, the profile of a traditional monopole antenna is relatively high, about 0.25λ 0 (λ 0 wavelength in air), it is difficult to integrate with other devices. In order to realize an antenna with a low profile and an omnidirectional pattern, two methods can generally be used: 1) a modified vertical monopole loaded on the top; 2) high-order modes excited by circular or loop patch antennas. A patch unit of appropriate size is loaded on the top of the vertical monopole antenna, which reduces the height of the antenna by increasing the surface curren...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q15/00
CPCH01Q1/38H01Q1/50H01Q15/0013
Inventor 冯桂荣陈蕾史小卫岳浩杨耀州
Owner XIDIAN UNIV
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