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Design and development of patch compensated wideband Vivaldi antenna

Published online by Cambridge University Press:  10 July 2018

Rana Pratap Yadav*
Affiliation:
Thapar Institute of Engineering and Technology, Punjab-147004, India
Vinay Kumar
Affiliation:
Thapar Institute of Engineering and Technology, Punjab-147004, India
Rajveer Dhawan
Affiliation:
Thapar Institute of Engineering and Technology, Punjab-147004, India
*
Author for correspondence: Rana Pratap Yadav, E-mail: ranayadav97@gmail.com

Abstract

Design and fabrication of a microstrip feedline-based Vivaldi antenna in the frequency range of 6.0–8.0 GHz have been presented. The Vivaldi antenna is a planar antenna, fabricated at the microstrip feedline by having an exponentially tapered slot profile on it. An optimized computer-aided design has been developed and simulated for the desired radiation parameters like voltage standing wave ratio, bandwidth, directionality, beam-width, etc. The optimized design has been fabricated and tested. Wherever the results are not found as desired; problem has been comprehensively investigated and analyzed. This is found associated with a discontinuity at feed line, fabrication tolerance constraints and parasitic capacitance at the edges or the bent of the microstrip feedline which introduce the parasitic reactance in antenna design. Here, the presented work explores a generalized theoretical procedure for the compensation of associated problem by incorporating the reactive patch on the feedline. The developed theory is applied in fabrication and tested for the desired results.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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