A Compact Slot Antenna Utilizing a Right/Left-Handed Transmission Line Feed

Author

Wang, Yu-Shin ; Hsu, Min-Feng ; Chung, Shyh-Jong

Author_Institution

Nat. Chiao Tung Univ., Hsinchu

Volume

56

Issue

3

fYear

2008

fDate

3/1/2008 12:00:00 AM

Firstpage

675

Lastpage

683

Abstract

A novel compact planar antenna utilizing cascaded right/left-handed transmission lines is proposed. The significance of layout planning with respect to radiation is investigated and discussed in this paper. Two segments of transmission lines of the same electrical length with opposite signs are cascaded to provide zero phase at the operation frequency. The closed-form formulas for the equivalent circuit of a transmission line are used for circuit design. Both antenna layout and radiation mechanism are discussed. For experimental demonstration, the proposed antenna operating at 2.45 GHz was implemented on an FR4 substrate. The topology using several patches has quite smaller size than the conventional patch antenna. Besides, a fairly omnidirectional radiation pattern was measured.

Keywords

antenna radiation patterns; equivalent circuits; slot antennas; telecommunication transmission lines; antenna radiation mechanism; equivalent circuit; right/left-handed transmission line feed; slot antenna; Antenna feeds; Circuit synthesis; Circuit topology; Distributed parameter circuits; Equivalent circuits; Frequency; Planar arrays; Planar transmission lines; Slot antennas; Transmission line antennas; Antenna layout; left-handed (LH) transmission line; metamaterial; printed antenna; radiating edge;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2008.916910

Filename

4463915