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A Novel Miniaturized Antipodal Vivaldi Antenna with High Gain

Yin, Zhangfei, Yang, Xue‐Xia, Yu, Fan, Gao, Steven (2020) A Novel Miniaturized Antipodal Vivaldi Antenna with High Gain. Microwave and Optical Technology Letters, 62 (1). pp. 418-424. ISSN 0895-2477. (doi:10.1002/mop.32029) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:76488)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
https://doi.org/10.1002/mop.32029

Abstract

A novel antipodal Vivaldi antenna operating at an ultra‐wideband of 5.2 to 40 GHz with high gain and miniaturized size is presented in this article. By introducing a pair of radiation arms with maple‐leaf edge shape, the antenna gain is increased by 1 to 3 dB over the upper operation band (10‐40 GHz) compared to the normal antipodal Vivaldi antenna (AVA). To remain the beamwidth while increasing the gain, two rows of specialized symmetrical metallized vias are loaded on the two inside edges of the exponentially slot. By loading the resistors between the top and the bottom planes, the side lobe level at E‐plane is reduced by 3 dB. This proposed maple‐leaf antipodal Vivaldi antenna (MAVA) has the miniaturization size of 0.66λg × 0.68λg × 0.003λg. According to the simulated results, the relative bandwidth of the reflection coefficient less than −10 dB is 154%, and the gain is higher than 10 dBi over the 22 to 40 GHz band with the maximum value of 14.3 dBi. The antenna design is validated by the measurements

Item Type: Article
DOI/Identification number: 10.1002/mop.32029
Uncontrolled keywords: half power beamwidth (HPBW), high gain, miniaturization, ultra‐wideband (UWB), Vivaldi antenna
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Steven Gao
Date Deposited: 16 Sep 2019 10:48 UTC
Last Modified: 16 Feb 2021 14:07 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/76488 (The current URI for this page, for reference purposes)
Yu, Fan: https://orcid.org/0000-0002-4836-8723
Gao, Steven: https://orcid.org/0000-0002-7402-9223
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