Active Metamaterial-Inspired Broad-Bandwidth, Efficient, Electrically Small Antennas

Author

Zhu, Ning ; Ziolkowski, Richard W.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

1582

Lastpage

1585

Abstract

Realistic designs of broad-bandwidth metamaterial-inspired electric and magnetic antennas are characterized numerically. By augmenting their narrow bandwidth counterparts with internal non-Foster elements, active metamaterial unit cells are introduced as near-field resonant parasitic (NFRP) elements. The driven and NFRP elements in each presented case are designed to achieve nearly complete matching of the entire system to a 50- Ω source without any matching network and to yield high radiation efficiencies over their FBW_{10 dB} bandwidths that are more than 75 times their original values.

Keywords

antenna radiation patterns; broadband antennas; metamaterial antennas; NFRP; active metamaterial inspired antenna; antenna bandwidth; broadband antennas; electric antennas; electrically small antennas; magnetic antennas; matching network; near-field resonant parasitic; non-Foster elements; radiation efficiency; Bandwidth; Broadband antennas; Capacitance; Dipole antennas; Resonant frequency; Antenna bandwidth; broadband antennas; electrically small antennas (ESAs); metamaterial-inspired antennas; negative impedance converter (NIC); radiation efficiency;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2182981

Filename

6123189