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Improved feeds for log-periodic microstrip antenna arrays

Published online by Cambridge University Press:  23 March 2022

Arjuna Muduli Open the ORCID record for Arjuna Muduli [Opens in a new window]  and
Rabindra K. Mishra
Arjuna Muduli*
Affiliation:
Department of ECE, Koneru Lakshmaiah Education Foundation, Vijayawada, Guntur 522502, Andhra Pradesh, India
Rabindra K. Mishra
Affiliation:
Electronic Science Department, Berhampur University, Berhampur 760007, Odisha, India
*
Author for correspondence: Arjuna Muduli, E-mail: arjunamuduli@gmail.com
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Abstract

This note proposes a log-periodic microstrip antenna (LPMA), particularly after developing possible feed structures. The process develops an appropriate feed such that the LPMA can exhibit almost end-fire characteristics such as a log-periodic dipole antenna. The study simulated two LPMAs, one with five elements and the other with seven elements, followed by measurements on a five-element prototype. The five-element prototype LPMA with such a feed exhibits a bandwidth of 2.2–3 GHz. Over this band, radiation patterns remain consistent with a gain of 9.8 dBi. Simulated results follow the measured ones closely.

Keywords

End-fire antennaslog-periodic antennasmicrostrip antennas
Type
Antenna Design, Modeling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Issue 3 , April 2023 , pp. 477 - 485
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Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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