A compact saber antenna with reconfigurable pattern

A pattern and antenna technology, applied in the field of compact saber antennas and saber antennas, can solve the problems of insufficient compact size, insufficient wind resistance, and inability to completely cover half-space angle coverage, and achieve the effect of compact structure and small size

Active Publication Date: 2021-06-25
常州安塔歌电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the research results of airborne antennas at home and abroad are generally antennas with horizontal omnidirectional radiation characteristics, such as patent [CN102881995A] and literature ["Omnidirectional Dual-Polarized Antenna With Sabre-Like Structure", P. Liu et al., "IEEE Transactions on Antennas and Propagation", Vol. 65, March 2017] are all horizontal omnidirectional antennas, which cannot fully cover half-space angle coverage, and the size is not compact enough, and the wind resistance is not small enough

Method used

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  • A compact saber antenna with reconfigurable pattern
  • A compact saber antenna with reconfigurable pattern
  • A compact saber antenna with reconfigurable pattern

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Embodiment Construction

[0022] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0023] The invention is a small-sized saber antenna based on reconfigurable technology. According to the design schematic, a specific embodiment of an airborne antenna covering the half-space angle coverage of the 2.15-2.63GHz frequency band is given, which will be described below in conjunction with the accompanying drawings:

[0024] Such as figure 1 with figure 2 , the saber antenna contains a metal floor 1, a dielectric substrate 2, a metal ring 3 and a Π-shaped metal polygon 4. The dielectric substrate 2 is rectangular and welded vertically on the metal floor 1. The metal ring 3 and the Π-shaped metal polygon 4 are etched on the front of the dielectric substrate 2, wherein the Π-shaped metal polygon 4 is located above, and the upper part of the metal ring 3 extends into the Π-shaped metal polygon. Between the two vertical branches of th...

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Abstract

A compact saber antenna with reconfigurable pattern, including a metal floor, a dielectric substrate, a metal ring and a Π-shaped metal polygon; a thin slot is opened on the metal ring and a switch is located at the thin slot. Since the switch has two states of on and off, it can realize the switching of two radiation modes: monopole mode and dipole mode. When the switch is turned on, the antenna works in the monopole radiation mode, the metal ring is equivalent to a monopole antenna and the Π-shaped metal polygon acts as a reactance load, which can further reduce the resonant frequency and widen the bandwidth; when the switch is turned off, the metal ring is excited by coupling From the dipole mode of the Π-shaped metal polygon, the antenna works in the dipole radiation mode. The invention has the advantages of small size, small vertical sheet structure wind resistance and half-space angle coverage, etc., and is suitable for various compact saber antennas represented by airplanes that need to ensure maximum range angle communication coverage and low wind resistance.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a saber antenna, in particular to a compact saber antenna with a reconfigurable pattern. Background technique [0002] The airborne antenna is the medium through which the aircraft communicates with the outside world through electromagnetic wave propagation, and is a part of the aircraft's many perception systems. The quality of the airborne antenna determines the communication quality of the whole system, so it is of great significance to study the airborne antenna. The aircraft will perform complex maneuvers in the air, so it is hoped that the antenna can ensure the maximum range of angle coverage when the aircraft is in different attitudes. Due to the flight characteristics of the aircraft, the airborne antenna must also meet the aerodynamic requirements and reduce the air resistance as much as possible. However, the limited size of airborne antennas and their location on met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/48H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/48H01Q1/50
Inventor 张伟泉张志军
Owner 常州安塔歌电子科技有限公司
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