Design of a Three Dimensional Folded Monopole Antenna Using Current Flow

Liu, Yulin; Lee, Seung-Woo; Kim, Nam

doi:2010.10.2.67

J. Electromagn. Eng. Sci > Volume 10(2); 2010 > Article

Journal of the Korean Institute of Electromagnetic and Science 2010;10(2):67-72.
DOI: https://doi.org/10.5515/JKIEES.2010.10.2.067

Design of a Three Dimensional Folded Monopole Antenna Using Current Flow

Yulin Liu¹, Seung-Woo Lee², Nam Kim²

¹Division of Bioelectronics, Chungbuk National University
²College of Electrical and Computer Engineering, Chungbuk National University

Abstract

A new type of monopole antenna whit broadband characteristics is presented in this article. To reduce the size of the antenna, its upper part is folded. By separating the current flow, the resonance in the shorter part is in the higher band; and the longer part resonates in the lower band. This gives the broadband characteristics of the antenna. Slots on the corner using an oblique line improve the impedance matching and bandwidth. The measurement results show that the bandwidth operates from 0.848~0.992 GHz and 1.744~2.528 GHz, and the radiation patterns are in an omni-directional shape.

Key words: Three Dimensional Folded Atenna, Monopole Antenna, Current Distribution