DocumentCode :
2941162
Title :
A wideband metamaterial-inspired compact antenna using embedded non-Foster matching
Author :
Mirzaei, Hassan ; Eleftheriades, George V.
Author_Institution :
Univ. of Toronto, Toronto, ON, Canada
fYear :
2011
fDate :
3-8 July 2011
Firstpage :
1950
Lastpage :
1953
Abstract :
Passive electrically small antennas have a small radiation resistance and a narrow bandwidth. In this paper, a new type of active antenna is reported in which an active circuit generating a non-Foster impedance is embedded in a metamaterial-inspired small antenna with an inherent sizable radiation resistance. This circuit interacts with the reactive elements of the antenna. The end result is a compact, broadband antenna which is well matched and has the potential for a high efficiency. In this process, the need for an active (or passive) step-up transformer for the radiation resistance is eliminated. This work opens up the possibility of utilizing non-Foster components embedded in metamaterial-based antenna structures to obtain efficient antennas by manipulating the current and field distribution in and around the antenna.
Keywords :
active antennas; broadband antennas; impedance matching; metamaterial antennas; negative resistance circuits; active antenna; active circuit; broadband antenna; embedded nonFoster impedance matching; field distribution; narrow bandwidth antenna; passive electrically small antenna; radiation resistance; wideband metamaterial-inspired compact antenna; Antenna accessories; Broadband antennas; Capacitors; Impedance; Resistance; Tuning; Metamaterials; active antennas; electrically small antennas; impedance matching; negative resistance circuits;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
ISSN :
1522-3965
Print_ISBN :
978-1-4244-9562-7
Type :
conf
DOI :
10.1109/APS.2011.5996885
Filename :
5996885
Link To Document :
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