Leaf-shaped log-periodic slot antenna for broadband applications

Abstract

This paper describes simulation study on a single-sided planar log-periodic slot antenna providing wide bandwidth. The proposed antenna is very compact having overall physical size of 50.9×50.9 mm2 (equivalent to electrical size of 0.27λ×0.27λ at lowest operating frequency) and is easy to integrate with other circuit components of communication devices. It provides wide bandwidth of 11.6 GHz (from 1.6 to 13.2 GHz), nearly stable bidirectional radiation pattern and gain variation of 2-6 dBi with more than 60% radiation efficiency over its operating frequency band. It can be a suitable element for portable wireless systems operating over wide range of frequencies including IMT 1800, UMTS 2100, WLAN 2450, and UWB. © 2017 IEEE.