Novel small Vivaldi antenna

An antenna and a new type of technology, applied in the direction of antenna, slot antenna, antenna grounding switch structure connection, etc., can solve the problems of large antenna volume, low radiation efficiency, unsuitable frequency band, etc., to enhance end-fire effect, improve gain, and improve the gain of Effect

Inactive Publication Date: 2016-08-03
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the antennas in the past are bulky, difficult to feed, low radiation efficiency, and the frequency band is not suitable for the field of civil wireless communication, so further research is needed

Method used

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  • Novel small Vivaldi antenna
  • Novel small Vivaldi antenna
  • Novel small Vivaldi antenna

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] like figure 2 As shown, a novel miniaturized Vivaldi antenna includes a dielectric board 1, a metal conductor layer 2, and a metal microstrip feeder 3, and the metal conductor layer 2 and the metal microstrip feeder 3 are printed on both sides of the dielectric board 1, respectively. The metal conductor layer 2 is arranged on the front of the dielectric plate and is symmetrical with respect to the radiation direction. The metal conductor layer 2 is engraved with groove lines having an exponential function curve, and the groove lines include circular groove lines 4 and parallel groove lines 5 As well as the exponential gradient slot line 6, the first circular slot line 4 is equivalent to a resonant cavity, which plays the role of antenna impedance matching, the second parallel slot line 5 plays a coupling role, mainly affecting the trans...

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Abstract

The invention discloses a novel miniaturized Vivaldi antenna, which is a novel Vivaldi antenna with a center frequency of 5.4GHz, a standing wave ratio of less than 2, an impedance bandwidth of 4GHz, a gain of 6.55dB, and a cross polarization ratio of -24.59dB. , the antenna also has the characteristics of small size, simple feeding, and high radiation efficiency, and can be suitable for civil wireless communication, wireless local area network (RLAN), fixed wireless access system (FWA), WiMAX and IEEE 802.11a wireless network, with Good application prospects, worth promoting.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a novel miniaturized Vivaldi antenna. Background technique [0002] The Vivaldi antenna is a traveling-wave slot antenna that couples energy to the antenna patch through a microstrip transmission line and radiates it. Pay attention to. The Vivaldi antenna is the first slot-line end-fire traveling-wave antenna proposed by Gibson in 1979. The slot line is opened according to the exponential gradient, forming a shape similar to a bell mouth, radiating or receiving electromagnetic waves outward, because different parts radiate differently. Theoretically, the antenna has a wide operating bandwidth, so it is suitable as a transmitting antenna for pulse signals. Vivaldi antennas generally introduce energy in the form of microstrip, stripline, or coaxial transmission lines. Through electro-decoupling or dielectric coupling, energy conversion is performed between the feed transmission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q13/10
CPCH01Q1/38H01Q1/50H01Q13/106
Inventor 万发雨陈军徐国建
Owner NANJING UNIV OF INFORMATION SCI & TECH
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