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A printed high gain UWB vivaldi antenna design using tapered corrugation and grating elements
Author(s) -
Kumar Pandey Gaurav,
Kumar Meshram Manoj
Publication year - 2015
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20899
Subject(s) - vivaldi antenna , grating , antenna (radio) , materials science , microwave , antenna gain , radiation pattern , optics , true time delay , optoelectronics , antenna efficiency , physics , computer science , telecommunications , phased array
A compact Vivaldi antenna is proposed with high gain over the ultrawideband (UWB) using novel combination of corrugation and grating elements. As it is very intricate to improve the radiation characteristics such as gain throughout the UWB using single technique, therefore, corrugation at the flares and grating elements in the area of tapered slot are used to improve gain over the UWB. Due to the corrugation, the gain and front‐to‐back ratio improved significantly over 3–8 GHz whereas the effect of grating elements is observed over 8 GHz. The antenna operates for 2.9 GHz to more than 12 GHz with S 11 < −10 dB and is designed on 0.8‐mm thick low cost FR4 substrate (40 mm × 45 mm). The proposed antenna shows nearly stable unidirectional radiation patterns, peak realized gain more than 5 dBi, and front‐to‐back ratio better than 10 dB over the UWB. Furthermore, the time domain study of the antenna is carried out which shows good pulse handling capability with nearly flat group delay. © 2015 Wiley Periodicals, Inc. Int J RF and Microwave CAE 25:610–618, 2015.