Wide-band E-shaped patch antennas for wireless communications

TLDR

The paper introduces a novel single‑patch E‑shaped microstrip antenna designed for wide bandwidth. The wide‑band performance is achieved by incorporating two parallel slots into the patch, optimizing slot length, width, and position, and analyzing current behavior to expand bandwidth. The design is validated by examples achieving 21.2 %, 32.3 %, and 30.3 % bandwidths, with the 30.3 % antenna resonating at 1.9 and 2.4 GHz and exhibiting the reported radiation pattern and directivity.

Abstract

This paper presents a novel single-patch wide-band microstrip antenna: the E-shaped patch antenna. Two parallel slots are incorporated into the patch of a microstrip antenna to expand it bandwidth. The wide-band mechanism is explored by investigating the behavior of the currents on the patch. The slot length, width, and position are optimized to achieve a wide bandwidth. The validity of the design concept is demonstrated by two examples with 21.2% and 32.3% bandwidths. Finally, a 30.3% E-shaped patch antenna, resonating at wireless communication frequencies of 1.9 and 2.4 GHz, is designed, fabricated and measured. The radiation pattern and directivity are also presented.