Title :
A reconfigurable electrically-small antenna operating in the ´DC´ mode
Author :
Urwin-Wright, P.R. ; Hilton, G.S. ; Craddock, I.J. ; Fletcher, P.N.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
Abstract :
In this paper, an explanation of the design of an electronically tunable electrically-small antenna, operating in the ´DC´ mode is presented. Although this antenna has a narrow instantaneous bandwidth, electronic tuning allows a large band to be covered whilst maintaining the same good narrow-band operational characteristics. Evaluation of the antenna´s performance is provided by practical results, which consider: 3-D radiation patterns, efficiencies and non-linearities.
Keywords :
UHF antennas; antenna radiation patterns; circuit tuning; loop antennas; 3-D radiation patterns; DC mode; antennas performance evaluation; electronic tuning; electronically tunable antenna; narrow instantaneous bandwidth; narrow-band operational characteristics; reconfigurable electrically-small antenna; Antenna radiation patterns; Band pass filters; Bandwidth; Broadband antennas; Buildings; Protocols; Radio frequency; Size control; Telephone sets; Wire;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207747
