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Tree branch-shaped ultra-wideband Vivaldi antenna

An ultra-wideband and antenna technology, which is applied in the field of tree branch-shaped ultra-wideband Vivaldi antennas, can solve the problems of Vivaldi antenna bandwidth and size impact and limitation, and achieve the effects of miniaturized antenna size, enhanced end-fire effect, and increased gain

Pending Publication Date: 2019-03-22
YITI INTELLIGENT TECH LTD SHENZHEN CITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bandwidth and size of existing Vivaldi antennas are limited due to practical effects

Method used

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  • Tree branch-shaped ultra-wideband Vivaldi antenna

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Embodiment Construction

[0016] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0017] like figure 1 As shown, the specific embodiment of the present invention is: construct a kind of branch shape ultra-wideband Vivaldi antenna, comprise antenna dielectric substrate (not shown in the figure), antenna radiation module 2 and microstrip line feed module ((not shown in the figure) Shown)), the antenna radiation module 2 includes an upper surface metal layer 21 and a lower surface metal layer (not shown in the figure), the antenna dielectric substrate includes a first antenna dielectric substrate and a second antenna dielectric substrate, the The upper surface metal layer and the microstrip line feed module are respectively arranged on opposite sides of the first antenna dielectric substrate, the lower surface metal layer is arranged on one side of the second antenna dielectric substrate, and the first The antenna dielectric subs...

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Abstract

The invention relates to a tree branch-shaped ultra-wideband Vivaldi antenna, which includes an antenna dielectric substrate, an antenna radiation module and a microstrip line feeding module. The antenna radiation module comprises an upper surface metal layer and a lower surface metal layer. A parallel slot and an exponentially tapered slot are arranged on each of the upper surface metal layer andthe lower surface metal layer. The microstrip slot feeding module is provided with a microstrip transmission line, the parallel slot is coupled with the microstrip transmission line, both sides of the exponentially tapered slot are provided with a plurality of tree branch-shaped slots, and the height of the tree branch-shaped slots decreases progressively along the exponentially tapered opening direction. The two sides of the exponentially tapered slot are provided with a plurality of tree branch-shaped slots, and the tree branch-shaped slots restrict the surface current of the antenna aroundthe tapered slots, so that the radiation characteristics of the antenna can be well improved, the impedance matching of the antenna can be improved, the bandwidth of the antenna can be expanded, thegain of the antenna can be improved, the end radiation effect of the antenna can be enhanced, and the size of the antenna can be miniaturized.

Description

technical field [0001] The invention relates to a Vivaldi antenna, in particular to a branch-shaped ultra-wideband Vivaldi antenna. Background technique [0002] The ultra-wideband Vivaldi antenna is a common device in the field of radio frequency and microwave, and it is widely used in aerospace, material detection, microwave imaging and other fields. How to design an antenna that satisfies miniaturization, wide impedance bandwidth and good radiation performance at the same time is a problem that needs to be solved in the industry. The Vivaldi antenna (that is, the exponential linear tapered slot antenna) is one of the best antennas for ultra-wideband technology. It was first proposed by Gibson in 1979. It is a tapered slot antenna with relatively good comprehensive performance. [0003] As an end-fire traveling wave antenna, the slot line is designed by exponentially splaying. Theoretically, the Vivaldi antenna should have infinite bandwidth, but in fact, the operating f...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50
CPCH01Q1/38H01Q1/50
Inventor 宋泽文宋四云
Owner YITI INTELLIGENT TECH LTD SHENZHEN CITY
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