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Ultra-wideband dual-polarization phased-array antenna based on strong coupling dipole

A phased array antenna and dipole technology, applied in antennas, antenna coupling, antenna arrays, etc., can solve the problems of reduced radiation efficiency, poor polarization purity, and large weight, optimize scanning performance, reduce cross-polarity, etc. The effect of reducing the degree of resonance and eliminating resonance

Active Publication Date: 2022-02-18
NAT UNIV OF DEFENSE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Reduce the antenna profile height to λ low / 26, the radiation efficiency of the array will be greatly reduced
Not only that, the high manufacturing cost and heavy weight of ferrite materials make it almost impossible for practical application
[0005] To sum up, traditional UWB antennas have the problems of high profile and poor polarization purity
The new tightly-coupled antenna array can realize ultra-wideband scanning with a low profile, but it also faces the difficulty of designing the feed network, and the consequent problems of low antenna efficiency and isolation

Method used

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  • Ultra-wideband dual-polarization phased-array antenna based on strong coupling dipole
  • Ultra-wideband dual-polarization phased-array antenna based on strong coupling dipole
  • Ultra-wideband dual-polarization phased-array antenna based on strong coupling dipole

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment, technical solution of the present invention is described further in detail:

[0034] see figure 1 , the ultra-broadband dual-polarized phased array antenna based on strong coupling dipoles provided in this embodiment arranges 100 array elements in a 10×10 two-dimensional arrangement, and the surrounding elements are connected to a 50-ohm matching load as dummy elements. The array is only a specific implementation of the ultra-wide bandwidth angular scanning phased array antenna, which can expand the infinite array environment to any practical finite array according to actual application requirements.

[0035] Please also refer to Figure 2-5 The array element structure includes a radiating element 1 placed horizontally, a dielectric matching layer 2 located above the radiating element 1, a feed structure 3 placed vertically below the radiating element 1, and a metal ground plate 4 placed horizontal...

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Abstract

The invention provides an ultra-wideband dual-polarization phased-array antenna based on a strong coupling dipole. The antenna comprises a horizontally disposed radiation unit, a dielectric matching layer located above the radiation unit, a vertically disposed feed structure located below the radiation unit, and a horizontally disposed metal grounding plate located below the radiation unit. The radiation unit comprises three layers of horizontal dielectric substrates which are horizontally arranged, dipole units are respectively printed on the top surface and the bottom surface of the middle dielectric substrate, the two dipole units are vertically arranged in different planes, and reinforced coupling patches are respectively printed on the top surface of the upper dielectric substrate and the bottom surface of the lower dielectric substrate. Each reinforcing coupling patch wraps and clamps the vertical crossing part of the dipole unit, and the dielectric substrate, the dipole unit and the reinforcing coupling patch are connected through a plurality of first metalized via holes. The ultra-wideband dual-polarization phased-array antenna based on the strong coupling dipole is low in profile, the isolation degree between ports can be improved, and cross polarization is reduced.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to an ultra-wideband dual-polarization phased array antenna based on a strongly coupled dipole. Background technique [0002] The phased array antenna not only has the advantages of fast scanning speed and high stability, but also can realize beam forming and multi-beam scanning. Therefore, phased array technology has been widely used in radar and communication systems in airborne and space applications in recent years. In the current research field of phased arrays, ultra-wideband, especially the design of phased array antennas that can cover multiple operating frequency bands has become an important trend. For example, a single antenna array covering S-band (2-4GHz), C-band (4-8GHz), X-band (8-12GHz) and Ku-band (12-18GHz) is required on the aircraft. The ultra-wideband antenna array that can cover the above-mentioned frequency bands not only saves space and improve...

Claims

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Application Information

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IPC IPC(8): H01Q21/00H01Q1/48H01Q1/52H01Q5/25
CPCH01Q21/00H01Q1/52H01Q1/48H01Q5/25
Inventor 叶源江云黄昭宇刘博源黄敬健朱畅王青平陈曦崔开博袁乃昌
Owner NAT UNIV OF DEFENSE TECH
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