DocumentCode
1554912
Title
A Pattern Reconfigurable Null Scanning Antenna
Author
Yong, Siwen ; Bernhard, Jennifer T.
Author_Institution
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA
Volume
60
Issue
10
fYear
2012
Firstpage
4538
Lastpage
4544
Abstract
The design, analysis, and measurement of a reconfigurable null scanning antenna operating at 2.4 GHz are presented. Unlike existing null reconfigurable antennas, this compact antenna scans its pattern null continuously, and maintains its impedance bandwidth without the need for feed reconfiguration. Incorporation of 12 varactors enables null reconfiguration. Full-wave simulations of the antenna, including the bias network and the lumped circuit model for the varactors, predict antenna performance. Impedance and pattern measurements verify simulated results.
Keywords
UHF antennas; antenna radiation patterns; varactors; bias network; frequency 2.4 GHz; full-wave simulations; impedance bandwidth; impedance measurements; lumped circuit model; pattern measurements; pattern reconfigurable null scanning antenna; varactors; Antenna measurements; Antennas; Capacitance; Impedance; Resonant frequency; Varactors; Voltage measurement; Cognitive radio; microstrip; null scanning; pattern reconfigurable antenna;
fLanguage
English
Journal_Title
Antennas and Propagation, IEEE Transactions on
Publisher
ieee
ISSN
0018-926X
Type
jour
DOI
10.1109/TAP.2012.2207336
Filename
6236026
Link To Document