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Foldable large-spacing ultra-wideband low-profile tight coupling array antenna

A tightly coupled array, large spacing technology, applied to antennas, individually powered antenna arrays, antenna grounding switch structures, etc., can solve the problem of increasing the overall profile height of tightly coupled phased array antennas, difficult to use foldable function loading platforms, etc. problems, to achieve the effect of reducing the number of active channels, compact storage or transportation, compact size

Pending Publication Date: 2022-04-01
CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in order to achieve strong capacitive coupling between units, tightly coupled phased array units often adopt interleaving structures, such as interdigitation and overlapping. loading platform
Although the profile height of the tightly coupled phased array antenna is relatively low, it is often still necessary to load a matching layer with a certain height (usually 1 / 4 high-frequency wavelength) above the aperture, which greatly increases the The overall profile height of the antenna

Method used

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  • Foldable large-spacing ultra-wideband low-profile tight coupling array antenna
  • Foldable large-spacing ultra-wideband low-profile tight coupling array antenna
  • Foldable large-spacing ultra-wideband low-profile tight coupling array antenna

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Embodiment Construction

[0028] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] The invention discloses a foldable large-spacing ultra-wideband low-profile tightly coupled array antenna, such as figure 1 and figure 2 As shown, the dipole antenna units are periodically arranged according to a rectangular grid, and the dipole antennas with orthogonal polarization in the same grid meet at the end and form an "L"-shaped positional relationship, and the grids are independent of each other without interlacing structure, so that the front can be folded along the edge of the grid in the non-working state, which is convenient for storage and transportation, such as image 3 It is shown that the x-z plane is the azimuth plane, and the y-z plane is the elevation plane. The antennas have different unit spacings and unit forms along different orthogonal planes. This is to meet the requirements of differentiated beam coverage ...

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Abstract

The invention relates to a foldable large-spacing ultra-wideband low-profile tight coupling array antenna, which is characterized in that the array plane is foldable, the unit spacing is large, the profile height is low, and the ultra-wideband wide-angle scanning electrical performance can be realized. As a tight coupling antenna array, tight coupling between the units is realized by thickening the tail end parts of the dipole arms, and the shift-out of resonance in a working frequency band is also realized by designing the biased grounding fork (3). The adjacent units are mutually independent and have no staggered structure, so that the array surface has a foldable function. The foldable large-spacing ultra-wideband low-profile tight coupling array antenna works at a large unit spacing, has dual-polarization ultra-wideband wide-angle scanning performance, is extremely low in profile height, and has an array plane folding function.

Description

technical field [0001] The invention relates to the technical field of microwave antennas, in particular to a dual-polarized ultra-wideband low-profile tightly coupled array antenna with a front folding function and working at a large unit spacing. Background technique [0002] With the rapid development of electronic information technology and the explosive growth of communication capacity, modern electronic systems are increasingly integrated and multi-functional. Using a single or very few arrays to complete the transmission and reception of broadband or relatively discrete signals has become a phased array antenna. future development trend. In addition to the electrical performance requirements of ultra-wideband, many carrier platforms often hope that the phased array antenna has a compact volume and a low profile height due to limited space or for the purpose of stealth. In addition, in order to reduce the number of active channels of the phased array antenna and reduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q1/36H01Q15/14H01Q21/06
Inventor 张航宇刘志惠闫泽郭志宏吴鸿超周志鹏
Owner CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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