一种改进的対拓Vivaldi天线设计

提出了一种新颖的対拓Vivaldi天线。该天线的辐射耀斑用新的复合指数曲线修正。为改善天线的辐射特性(增益, 波束偏离和交叉极化), 采用了一个新的引向器, 该引向器由两个混合椭圆金属贴片构成。测试结果表明该天线在1~40 GHz频率范围内增益>0 dBi, 并且在15~40 GHz频段内天线的增益>12 dBi。在3~40 GHz频率范围内, E面的波束偏离小于3°, 并且在15~40 GHz不超过2°。

Abstract

In this paper, a novel antipodal Vivaldi antenna (AVA) is presented. The radiation flares were modified by a new composite compound exponential curve. A novel director containing two hybrid elliptical metal patches was adopted to improve the radiation parameters (gain, beam tilts and cross-polarization). The measurement results show that the proposed antenna operates from 1 GHz to more than 40 GHz with peak gain >0 dBi in the range of 1~40 GHz and >12 dBi over the 15~40 GHz range. The squinted beam of E-plane is less than 3° from 3 to 40 GHz and less than 2° from 20 to 40 GHz.

参考文献

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刘宇, 夏鑫淋, 杨涛. 一种改进的対拓Vivaldi天线设计[J]. 红外与毫米波学报, 2017, 36(2): 2017. Liu Yu, Xia Xinlin, Yang Tao. Design and improvement of an antipodal Vivaldi antenna[J]. Journal of Infrared and Millimeter Waves, 2017, 36(2): 2017.

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