Title :
Multimode antenna element with hemispherical beam peak and null steering
Author :
Labadie, Nathan R. ; Sharma, Satish K. ; Rebeiz, Gabriel
Author_Institution :
Electr. & Comput. Eng., San Diego State Univ., San Diego, CA, USA
Abstract :
A multimode antenna element consisting of a single fed omnidirectional dielectric resonator antenna and directional dual fed patch antenna is presented. By exciting three orthogonal radiating modes, the resulting element beam peak and null can be steered continuously by adjusting port amplitude ratios. It is also shown through simulation studies that the resulting beam shaping can be used to reduce a grating lobe by 9 dB and increase scan range by 10° in a four element linear array implementation.
Keywords :
antenna feeds; antenna radiation patterns; beam steering; dielectric resonator antennas; directive antennas; linear antenna arrays; microstrip antennas; omnidirectional antennas; beam shaping; directional dual fed patch antenna; element beam null steering; element beam peak steering; four element linear array implementation; grating lobe; hemispherical beam null steering; hemispherical beam peak steering; multimode antenna element; orthogonal radiating mode; port amplitude ratio; single fed omnidirectional dielectric resonator antenna; Arrays; Dielectrics; Finite element methods; Gain; Patch antennas; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6348691
