Device for modulating and strengthening electromagnetic radiation of miniature omnidirectional antenna by plasma

A technology of plasma and electromagnetic radiation, applied in the field of plasma, can solve the problems of not being able to achieve high gain and miniaturization at the same time, small gain of plasma antenna, large noise, etc., to reduce radar scattering cross section, increase antenna gain, and low noise Effect

Active Publication Date: 2016-10-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the problem that the traditional metal conductor antenna cannot achieve high gain and miniaturization at the same time, and the plasma antenna has small gain and large noise, so as to provide a device for enhancing the electromagnetic radiation of the miniaturized omnidirectional antenna by using plasma modulation

Method used

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  • Device for modulating and strengthening electromagnetic radiation of miniature omnidirectional antenna by plasma
  • Device for modulating and strengthening electromagnetic radiation of miniature omnidirectional antenna by plasma

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specific Embodiment approach 1

[0017] Specific implementation mode one: refer to figure 1 Describe this embodiment in detail. The device for enhancing the electromagnetic radiation of a miniaturized omnidirectional antenna described in this embodiment includes a miniaturized omnidirectional antenna system and a plasma modulation enhanced electromagnetic radiation system;

[0018] The miniaturized omnidirectional antenna system includes a metal antenna 1, a coaxial feeder 2 and a vector network analyzer 3;

[0019] The metal antenna 1 is fixed on the bottom of the coaxial feeder 2, and the top of the coaxial feeder 2 is connected to the output end of the vector network analyzer 3;

[0020] The plasma modulation enhanced electromagnetic radiation system includes a vacuum chamber, a discharge electrode 4 and a radio frequency power source 5;

[0021] The vacuum chamber includes a vacuum chamber body 6 and a vacuum pump group 9, the top of the vacuum chamber body 6 has an air inlet 7 and an air outlet 8, and t...

specific Embodiment approach 2

[0025] Specific embodiment two: This embodiment is a further description of the device that uses plasma modulation to enhance the electromagnetic radiation of a miniaturized omnidirectional antenna described in specific embodiment one. In this embodiment, the vacuum chamber is also provided with an inward recess The chamber 10, the opening side of the chamber is located at the top of the vacuum chamber, the inwardly recessed chamber 10 and the vacuum chamber are of split structure and sealed connection, the lower part of the coaxial feeder 2 and the metal antenna 1 are fixed on In the recessed chamber.

[0026] The shape of the vacuum chamber body 6 is not limited, and it is cylindrical, elliptical cylindrical, triangular cylindrical, cuboid, square, spherical, ellipsoid, etc. The shape of the inwardly recessed chamber 10 is not limited, and it is cylindrical or elliptical. Shape, triangular prism, cuboid, cube, sphere, ellipsoid, etc.

specific Embodiment approach 3

[0027] Specific embodiment three: This embodiment is a further description of the device for enhancing the electromagnetic radiation of miniaturized omnidirectional antennas using plasma modulation described in specific embodiment two. In this embodiment, sealant or mechanical fastening devices are used to secure the The inwardly recessed chamber 10 is airtightly connected with the vacuum chamber.

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Abstract

The invention provides a device for modulating and strengthening electromagnetic radiation of a miniature omnidirectional antenna by plasma, relates to the technical field of low-temperature plasma, and aims at solving the problems that a traditional metal conductor antenna cannot simultaneously achieve high gain and miniaturization and a plasma antenna is small in gain and high in noise. A metal antenna is fixed at the bottom end of a coaxial feeder; the top end of the coaxial feeder is connected with an output end of a vector network analyzer; an air inlet and an air outlet are formed in the top end of a vacuum chamber body; a vacuum pump set is fixed at the bottom end of the vacuum chamber body; a discharge electrode is wound on the side wall of the vacuum chamber body; the vacuum chamber body is full of a working gas; one end of the discharge electrode is grounded and the other end is connected with an output end of a radio frequency power source; the lower part of the coaxial feeder and the metal antenna are fixed in the vacuum chamber body; and the axis of the coaxial feeder overlaps with the central line of the vacuum chamber body. The device is high in radiation gain, adjustable in gain, small in size and low in noise, and is suitable for the occasion of antenna application.

Description

technical field [0001] The invention relates to the technical field of low-temperature plasma, in particular to a technology for enhancing antenna electromagnetic radiation by using plasma modulation. Background technique [0002] Antenna is an important part of transmitting and receiving signals in a wireless communication system. The performance of the antenna determines the quality of the communication system to a large extent. Therefore, the research on the optimization of the antenna performance has important practical significance. Antenna gain, an important characteristic parameter, largely determines its effective coverage distance, including communication distance, reconnaissance distance, interference distance and direction finding distance, etc. Under the same conditions, the higher the antenna gain, the greater the coverage distance. The farther it is, the closer the coverage distance will be. [0003] In order to improve the antenna gain, the traditional method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/50H01Q21/00H01Q23/00H04L27/34
CPCH01Q1/50H01Q21/00H01Q23/00H04L27/34
Inventor 聂秋月孔繁荣孙宇飞林澍张仲麟王春生江滨浩
Owner HARBIN INST OF TECH
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