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Dual-line polarized ultra-wideband compact antenna

A dual-linear polarization, ultra-wideband technology, applied in slot antennas, radiating element structures, circuits, etc., can solve problems such as conversion structure limitations, and achieve the effects of low cross polarization, simple structure, symmetrical and stable pattern

Inactive Publication Date: 2019-05-17
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-frequency cut-off frequency is limited by the switching structure of the microstrip antenna slot line

Method used

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  • Dual-line polarized ultra-wideband compact antenna
  • Dual-line polarized ultra-wideband compact antenna
  • Dual-line polarized ultra-wideband compact antenna

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Embodiment 1

[0020] to combine figure 1 The structure of the 0.8-18GHz dual-line polarization ultra-wideband compact antenna of the present invention designs a 0.8-18GHz dual-line polarization anti-heel Vivaldi antenna: the frequency range is 0.8-18GHz; VSWR<2.5 in this frequency band, the maximum radiation direction The gain is greater than -3.5dB. The dielectric layer a3 of the antipodal Vivaldi antenna is Rogers RO3006 with a dielectric constant of 6.15 and a thickness of 0.508 mm.

[0021] Figure 5 It is the standing wave ratio VSWR result graph of the dual-linear polarization ultra-wideband compact antenna of the present invention. The working frequency range of the antenna is 0.8-18GHz, and the standing wave ratio VSWR<2.5, which meets the design index.

[0022] Figure 6 It is the maximum gain result graph of the dual-linearly polarized ultra-wideband compact antenna of the present invention. The antenna works in the frequency range of 0.8-18GHz, the maximum gain of the antenn...

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Abstract

The invention discloses a dual-line polarized ultra-wideband compact antenna. The dual-line polarized ultra-wideband compact antenna includes two identical antipode Vivaldi antenna bodies which are arranged to be in a T shape at a 90-degree right angle, the antipode Vivaldi antenna bodies are of a single-layer dielectric structure, and metal plates are arranged on both sides of a dielectric layer.Specifically, (1) radiation patches with Y-shaped gradient slits are located on both sides of the single-layer dielectric layer and are composed of exponential gradient sections which act as radiation roles; (2) chip resistors are connected to the tail ends of the radiation patches, parasitic patches are connected to the other ends of the chip resistors, and the chip resistors are located on bothsides of the single-layer dielectric layer; (3) the parasitic patches are loaded with four parallel rectangular slits correspondingly and located on both sides of the single-layer dielectric layer; and (4) a parallel double-line structure which is different from a traditional balun structure is adopted in a feeding transmission section. The characteristics of compact ultra-wideband and double-line polarization can be realized, the advantages of simple structure and convenient processing are achieved, and mass production can be carried out by using a printed circuit technique.

Description

technical field [0001] The invention belongs to the technical field of microstrip antennas, in particular to a dual-line polarized ultra-wideband compact antenna. Background technique [0002] With the development of communication technology and electronic countermeasure technology, the requirements for all aspects of the antenna are becoming more and more stringent, especially for the broadband of the frequency band and the miniaturization of the overall structure of the antenna. It is a trend in the future to expand the antenna bandwidth, reduce the size of the antenna, and develop the frequency to a lower frequency. The Vivaldi antenna has the advantages of ultra-wideband, low cross-polarization, small size, stable pattern, planar structure, and easy processing. However, the bandwidth of the Vivaldi antenna is limited by two factors. The low-frequency cut-off frequency is mainly limited by the antenna width. Usually The opening width of the antenna slot line is equal to ...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/10
Inventor 陈如山凌玲樊振宏李兆龙
Owner NANJING UNIV OF SCI & TECH
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