Rectangular Ring Open-Ended Monopole Antenna for Mobile Dual-Band Operations

Yoon, Joong Han; Koo, Ryung Seo; Rhee, Young Chul

doi:2013.13.1.8

J. Electromagn. Eng. Sci > Volume 13(1); 2013 > Article

Journal of Electromagnetic Engineering and Science 2013;13(1):8-15.
DOI: https://doi.org/10.5515/JKIEES.2013.13.1.8

Rectangular Ring Open-Ended Monopole Antenna for Mobile Dual-Band Operations

Joong Han Yoon¹, Ryung Seo Koo², Young Chul Rhee³

¹Dept. of Electric Engineering, Silla University
²Defense Agency for Technology and Quality
³Dept. of Information & Communication Engineering, Kyungnam University

Abstract

This paper presents a novel design for a simple rectangular ring with an open-ended monopole antenna that is well suited to DCS/PCS/UMTS/WLAN applications for dual-band operations. A microstrip-fed rectangular monopole antenna is first designed and then modified to introduce the rectangular ring with an open-ended antenna and a rectangular slit in the ground plane. Prototypes of the proposed antenna were fabricated and tested. The antenna, resonating at 1,405 MHz and 4,840 MHz, has a -10 dB impedance bandwidth of about 1,695 and 1,530 MHz (1,220~2,815 and 4,495~6,025 MHz), or about 79.06 % and 29.09 %. The observed 2D radiation patterns and 3D gain performance of the antenna in the operation bands are discussed.

Key words: Ring Antenna with Open-Ended, DCS/PCS/UMTS/WLAN Antenna, Dual-Band Operation, Rectangular Slit in the Ground