DocumentCode
1288869
Title
Triple-Tuning Small Antennas for Increased Bandwidth [Antenna Designer´s Notebook]
Author
Simpson, Ted
Author_Institution
Electr. Eng. Dept., Univ. of South Carolina, Columbia, SC, USA
Volume
54
Issue
4
fYear
2012
Firstpage
178
Lastpage
186
Abstract
A method for designing a lossless network to triple tune an electrically small antenna is presented. This approach is based jointly upon Wheeler´s definition of the reflection coefficients at the edges of the band, and upon Fano´s criterion defining the maximum possible bandwidth. Examples are given for a small top-loaded antenna operated at two center frequencies, 175.5 MHz and 300 MHz, with values of Q equal to 100 and 19, respectively.
Keywords
UHF antennas; VHF antennas; Fano criterion; electrically small antenna; frequency 175.5 MHz; frequency 300 MHz; lossless network; reflection coefficients; small top-loaded antenna; triple-tuning small antennas; Antenna measurements; Bandwidth; Equivalent circuits; Impedance; Loss measurement; Resistance; Tuning; Electrically small antennas; high Q circuits; impedance matching; increasing bandwidth;
fLanguage
English
Journal_Title
Antennas and Propagation Magazine, IEEE
Publisher
ieee
ISSN
1045-9243
Type
jour
DOI
10.1109/MAP.2012.6309176
Filename
6309176
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