Title :
An electronically-steerable artificial-impedance-surface antenna
Author :
Gregoire, D.J. ; Colburn, J.S. ; Patel, A.M. ; Quarfoth, Ryan ; Sievenpiper, Daniel
Author_Institution :
Appl. Electromagn. Lab., HRL Labs., LLC, Malibu, CA, USA
Abstract :
A Ku-band, electronically-steerable, artificial-impedance-surface antenna (AISA) was designed, fabricated and measured. It is capable of scanning in elevation from -5° to 80° with gain variation of less than 3 dB. The antenna operates by launching a surface wave along a surface-wave waveguide (SWG) whose impedance elements are rectangular patches with electrically tunable capacitors between them. The radiation beam is scanned in elevation by applying voltages to the varactors to change SWG´s impedance pattern.
Keywords :
antenna radiation patterns; microstrip antennas; varactors; waveguide antennas; AISA; Ku-band electronically-steerable artificial-impedance-surface antenna; SWG; antenna radiation beam; electrically tunable capacitor; rectangular patch; surface-wave waveguide; varactors; Antennas and propagation; Impedance; Modulation; Resistance; Surface impedance; Surface waves; Varactors;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904606
