Dual-polarized ultra-wide-band wide-angle scanning Vivaldi antenna array

A technology of wide-angle scanning and antenna array, which is applied in the direction of antenna array, separately powered antenna array, antenna, etc., can solve the problems of Vivaldi antenna's ultra-wide bandwidth angular scanning effect is not good, and achieve cost reduction, cost reduction, and noise reduction Effect

Inactive Publication Date: 2018-11-13
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Abstract
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the effect of the ultra-wide bandwidth angle scanning of the exi

Method used

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  • Dual-polarized ultra-wide-band wide-angle scanning Vivaldi antenna array
  • Dual-polarized ultra-wide-band wide-angle scanning Vivaldi antenna array
  • Dual-polarized ultra-wide-band wide-angle scanning Vivaldi antenna array

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Embodiment Construction

[0027] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0028] Such as Figure 7 As shown, this embodiment includes an antenna base 1 and a plurality of metal arrays 2 arranged on the base in an array, each metal array 2 includes four antenna arms arranged at intervals of 90° along the circumference, and two adjacent The metal arrays 2 are spliced ​​together, and the adjacent two antenna arms on the adjacent metal arrays 2 are spliced ​​together to form an antenna unit 3, and the adjacent two antenna arms on the adjacent metal arrays 2 are connected by a microstrip board 4 .

[0029] Such as figure 1 and figure 2 As shown, the resonant cavity 31 of each antenna uni...

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Abstract

The invention discloses a dual-polarized ultra-wide-band wide-angle scanning Vivaldi antenna array. The antenna array comprises an antenna pedestal and a plurality of metal arrays arranged on the pedestal in an array mode. Each metal array comprises four antenna arms which are arranged 90 degree apart along a circumference. The two adjacent metal arrays are spliced together. The two adjacent antenna arms on the adjacent metal arrays are spliced together to form one antenna unit. The two adjacent antenna arms on the adjacent metal arrays are connected through a microstrip plate. An ultra-wide-band wide-angle scanning problem is solved. Through optimizing an antenna parameter, a 0.3-1.5GHz operating frequency band, +/-45 degree wide angle scanning, and a -13dB maximum side lobe can be realized. A system requirement is satisfied. When a system noise is reduced, the effective aperture requirement of the array is less. An antenna unit number, an LNA unit number, a data processing module andthe like can be effectively reduced, and then the cost of the whole system can be greatly reduced. In the invention, through designing a microstrip plate barron, the noise is reduced and cost is greatly decreased.

Description

technical field [0001] The invention relates to a Vivaldi antenna for receiving or transmitting ultra-wideband millimeter-wave band electromagnetic waves, in particular to a dual-polarization ultra-wide bandwidth angular scanning Vivaldi antenna array. Background technique [0002] Cosmology in the 21st century still has many fundamental issues to be resolved, such as: the nature of elementary particles and fundamental forces, the formation and evolution of the universe, the origin of dark matter, the formation of planetary systems, etc. This requires astronomers to further observe the structure of the early universe, that is, to build telescopes with higher sensitivity and field of view (sky survey speed). Whether on the ground or in the sky, many new generation telescopes will be built, such as SKA (Square Kilometer Array). The international large-scale scientific project - the Square Kilometer Array Radio Telescope (SKA) is a joint venture of more than ten countries arou...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50H01Q21/00H01Q21/06
CPCH01Q1/36H01Q1/50H01Q21/0006H01Q21/061
Inventor 曹锐李庄陶小辉荣大伟方佳
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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