Electromagnetic wave absorbing body-based high-isolation array antenna

A technology of electromagnetic wave absorption and high isolation, which is applied in the direction of antenna, antenna coupling, electrical components, etc., to achieve the effect of enhancing interference suppression performance, improving isolation, and reducing space wave coupling

Active Publication Date: 2018-11-23
西安航捷电子科技有限公司
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  • Abstract
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Problems solved by technology

However, there are relatively few research reports on the application of electromagnetic absorbers to i

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  • Electromagnetic wave absorbing body-based high-isolation array antenna
  • Electromagnetic wave absorbing body-based high-isolation array antenna
  • Electromagnetic wave absorbing body-based high-isolation array antenna

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[0030] The technical solution of the present invention will be further described below in conjunction with the drawings and specific embodiments.

[0031] The present invention provides a high isolation array antenna based on an electromagnetic absorber. By loading an electromagnetic absorber wall 5 composed of electromagnetic absorber units between the element antennas of the array antenna, the electromagnetic absorber is used to prevent electromagnetic waves. Absorption, which converts the space electromagnetic wave energy that plays a major role in the mutual coupling of the unit antennas into the form of heat energy, and dissipates it, which can greatly reduce the electromagnetic coupling between the unit antennas and improve the isolation between the unit antennas. Further enhance the adaptive interference suppression performance of the array antenna.

[0032] The high isolation array antenna based on electromagnetic wave absorber of the present invention, such as figure 1 As ...

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Abstract

The invention discloses an electromagnetic wave absorbing body-based high-isolation array antenna, which comprises a metal bottom plate, wherein four element antennas are vertically arranged on the metal bottom plate, are symmetrically distributed relative to the center of the metal bottom plate and rotate 90 degrees in sequence; an electromagnetic wave absorbing body unit formed by electromagnetic wave absorbing walls is arranged on two vertical axes of the metal bottom plate; each electromagnetic wave absorbing wall is of a double-sided structure and comprises two layers of electromagnetic wave absorbing plates which are laminated back to back; a plurality of evenly spaced microstrip structures are arranged at the front side of each electromagnetic wave absorbing plate; and each microstrip structure comprises a cross-shaped microstrip patch and square annular microstrip lines arranged at the outer side of the cross-shaped microstrip patch. The antenna is applied to a Beidou satellitenavigation system; and spatial electromagnetic waves, close to a factory, of the element antennas are absorbed through the electromagnetic wave absorbing body unit, so that coupling of the spatial waves between the element antennas is reduced and the isolation between the element antennas is improved.

Description

technical field [0001] The invention belongs to the technical field of antennas, and also relates to the technical field of electromagnetic superconductors; in particular, it relates to a high-isolation array antenna based on an electromagnetic absorber. Background technique [0002] The satellite navigation system is an important information source in the field of modern military weapons and equipment and combat command. It can provide accurate three-dimensional position and speed information and high-precision time reference for various military carriers on land, sea, air and space around the world. However, the power of satellite navigation signals received on the ground is quite weak, and satellite navigation receivers are extremely susceptible to interference from unintentional or artificial radio frequency signals, resulting in reduced navigation accuracy, and in severe cases, even unable to capture satellite navigation signals. The satellite navigation adaptive anti-j...

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/52H01Q17/00
Inventor 李建星舒敏杰肖志成张安学陈娟
Owner 西安航捷电子科技有限公司
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