Antipodal-type broadband Vivaldi antenna

A broadband and antenna technology, applied in the field of opposite-to-the-heel broadband Vivaldi antenna, can solve the problems of narrow frequency band and low gain of Vivaldi antenna

Inactive Publication Date: 2016-11-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention solves the problem of low gain and narrow frequency band of the traditional Vi...

Method used

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  • Antipodal-type broadband Vivaldi antenna
  • Antipodal-type broadband Vivaldi antenna
  • Antipodal-type broadband Vivaldi antenna

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specific Embodiment approach 1

[0012] Embodiment one: the Vivaldi antenna designed by the present invention comprises a dielectric plate (1-1), on which the impedance matching balun (1-2; 1-3) and two tapered metal microstrips (1) are loaded by metal etching -4). The main function of the impedance matching balun is to adjust the impedance matching characteristics of the antenna. The balun on one side is a metal strip (1-2) with a width of 3mm, while the other side gradually changes from 30mm to 3mm (1-3). Broadband impedance matching is achieved through the tapered structure; the tapered metal microstrip (1-4) of the antenna is placed on both sides of the dielectric plate, and its inner curve is y=1.07*exp(0.045*x)-4.5, and the outer Along the bottom curve is an ellipse line, the antenna has a working bandwidth of 5-12GHz, a beam width of 60°, and a gain of 10dB.

specific Embodiment approach 2

[0013] Specific embodiment two: the Vivaldi antenna designed by the present invention comprises a dielectric plate (2-1), on which by metal etching loading impedance matching balun (2-2; 2-3) and two tapered metal microstrips (2 -4). The main function of the impedance matching balun is to adjust the impedance matching characteristics of the antenna. The balun on one side is a metal strip (2-2) with a width of 3mm, while the other side gradually changes from 30mm to 3mm (2-3). Broadband impedance matching is achieved through the tapered structure; the tapered metal microstrip (2-4) of the antenna is placed on both sides of the dielectric plate, and its inner curve is y=1.07*exp(0.045*x)-4.5, and the outer The curve along the bottom is an ellipse line. At the same time, the antenna is slotted (2-5) on the outer edge. The slot depth is 3mm, the width is 1mm, and the interval is 1mm. The working bandwidth of the antenna is 3-12GHz, the beam width is 60°, and the gain is 12dB.

specific Embodiment approach 3

[0014] Specific embodiment three: the Vivaldi antenna designed by the present invention includes a dielectric plate (3-1), on which the impedance matching balun (3-2; 3-3) and two tapered metal microstrips (3) are loaded by metal etching -4; 3-5). The main function of the impedance matching balun is to adjust the impedance matching characteristics of the antenna. The balun on one side is a metal strip (3-2) with a width of 3mm, while the other side gradually changes from 30mm to 3mm (3-3). Broadband impedance matching is achieved through the gradient structure; the gradient metal microstrip of the antenna, the inner curve on one side is y=1.07*exp(0.045*x)-4.5(3-5), and the inner curve on the other side is y =1.07*exp(0.06*x)-4.5(3-5), the outer edge and the bottom curve are elliptical lines, the working bandwidth of this antenna is 5-12GHz, the beam width is 50°, and the pointing direction is y=1.07* The exp(0.06*x)-4.5 gain is 10dB at 10° in the direction.

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Abstract

The invention discloses an anti-heel type wide-band Vivaldi antenna, which works at 5-12 GHz and has the advantages of simple structure, convenient power feeding, good directivity and the like. Its antenna type is a microstrip patch type, and its main structure includes a dielectric plate and a metal patch. The metal patch includes an impedance matching balun and two gradient metal microstrips. In order to improve the performance of the antenna, the present invention also proposes a heel-shaped Vivaldi antenna with side slots, which effectively improves the gain and bandwidth of the Vivaldi antenna; in addition, the present invention also proposes a novel asymmetrical Vivaldi antenna , the invention effectively improves the impedance bandwidth of the antenna and can adjust the radiation direction of the antenna.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an anti-heel wide-band Vivaldi antenna. Background technique [0002] With the development of modern communication technology, high-performance antennas have attracted more and more attention. In many applications, broadband, high-gain, and directional antennas play an extremely important role, and Cassegrain satisfies Under this application condition, the impedance matching balun can effectively adjust the matching of the antenna, so that the bandwidth of the antenna is very wide, and the metal radiation microstrip effectively limits the radiation direction of the electromagnetic wave, making the propagation direction of the antenna smaller, so the gain of the antenna is obtained. improved. The Vivaldi antenna has many applications, the most important of which is the transmitting antenna in the antenna measurement system. Due to the wide-band characteristics, it can bring...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50
CPCH01Q1/38H01Q1/50
Inventor 杨国辉于赫孟繁义
Owner HARBIN INST OF TECH
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