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A device for increasing phased array wide-angle scanning gain

A wide-angle scanning, phased array technology, applied in antenna grounding devices, antenna arrays, antennas, etc., can solve the problem of large gain drop, reduce the side lobe level, change the radiation performance, and reduce the back lobe. Effect

Active Publication Date: 2018-10-19
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] In order to overcome the problem of excessive gain drop during wide-angle scanning of small phased array arrays, the present invention provides a phased array wide-angle scanning that is simple in structure, does not change the antenna structure itself, is beneficial to low profile, and is suitable for various antenna types. High-gain technology, the application of this technology does not make any changes to the antenna structure itself, which is beneficial to the low profile of the phased array and can be adapted to a variety of antennas

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  • A device for increasing phased array wide-angle scanning gain
  • A device for increasing phased array wide-angle scanning gain
  • A device for increasing phased array wide-angle scanning gain

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, and the present invention includes but not limited to the following embodiments.

[0024] Traditional microstrip antennas (such as figure 1 Shown) is the metal as the ground plane, the dielectric substrate and the ground plane are separated by air at a certain distance, and the conductor sheet is pasted on the dielectric substrate; N such microstrip antenna units are arranged into a linear array, and the N antennas share A large dielectric substrate and a ground plate are separated by half the operating wavelength of the microstrip antenna. When such an array scans to a wide angle (for example, the scan angle θ≧40°), the gain will drop seriously. The present invention provides a technique for improving the wide-angle scanning gain of a small phased array. The technique is mainly based on the traditional microstrip antenna array without changing the struc...

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Abstract

The invention provides a device for enhancing phased array wide angle scanning gain. A dielectric plate is additionally arranged between a metal grounding plate and a microstrip antenna dielectric plate of a microstrip antenna array. The dielectric plate is closely fit with the surface of the metal grounding plate. The size of the dielectric plate is consistent with the size of the metal grounding plate. Radiation performance of an element radiation pattern is changed and back lobe is reduced without influencing the structure of the antenna so that array antenna wide angle scanning is enabled to possess relatively high gain.

Description

technical field [0001] The invention relates to the improvement of the wide-angle scanning gain of a small-scale phased array, and belongs to the field of phased array wide-angle scanning. Background technique [0002] Phased array antennas are widely used because of the flexible control of beam direction. Due to the influence of mutual coupling between array elements and the limitation of the beam width of the element pattern itself, the gain of the antenna array drops greatly when the beam sweeps to a wider angle. For example, the gain of the phased array antenna of the microstrip antenna unit drops by 4 to 5 dB when the beam scans to ±50 degrees. Improving the antenna gain during wide-angle scanning has always been a difficult problem for antenna researchers. In recent years, some methods have been proposed to improve the problem of large gain drop during wide-angle scanning: [0003] Literature 1 Jain, S.Mittra, R; Abdel-Mageed, M. Broadband flat-base Luneburg lensante...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q21/00
Inventor 李建瀛杨光伟魏昆张兆林王伶杨祎
Owner NORTHWESTERN POLYTECHNICAL UNIV