A Compact Printed Antenna With an Embedded Double-Tuned Metamaterial Matching Network

Author

Selvanayagam, Michael ; Eleftheriades, George

Author_Institution

Edward S. Rogers Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada

Volume

58

Issue

7

fYear

2010

fDate

7/1/2010 12:00:00 AM

Firstpage

2354

Lastpage

2361

Abstract

A compact antenna intended for use in a laptop computer is proposed with the antenna consisting of a simple radiating strip and a matching network based on a metamaterial particle. The matching network is used to increase the -10 dB bandwidth of the antenna. Double-tuned matching network theory is used to increase the bandwidth of the antenna by forming a loop on the Smith Chart inside a given VSWR circle. The matching network is implemented using a complementary-split-ring-resonator (CSRR) microstrip network to act as a shunt LC network. This is confirmed by means of a circuit model to model the CSRR-microstrip network. Finally the antenna is fabricated and tested with the measured and simulated results showing good agreement. The measured antenna has 560 MHz of bandwidth centered at 2.54 GHz with an efficiency of 89%.

Keywords

metamaterials; microstrip antennas; resonators; CSRR-microstrip network; Smith chart; VSWR circle; antenna bandwidth; bandwidth 560 MHz; compact printed antenna; complementary-split-ring-resonator microstrip network; double-tuned metamaterial matching network; frequency 2.54 GHz; shunt LC network; Antenna measurements; Antenna theory; Bandwidth; Computer networks; Frequency; Impedance; Iron; Loaded antennas; Metamaterials; Portable computers; RLC circuits; Laptop antennas; matching networks; meta materials;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2010.2048876

Filename

5454306