Title :
A constant beamwidth reflector antenna for a harmonic radar operating in the near-field
Author :
Aumann, Herbert M. ; Emanetoglu, Nuri W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Maine, Orono, ME, USA
Abstract :
A dual-frequency constant beamwidth reflector antenna for use with a harmonic radar in the focused near-field is proposed. The technique matches reflector defocusing effects to the frequency dependent phase center displacement of a log-period dipole antenna feed by specifying the LPDA apex angle. The technique was verified by simulations and measurements.
Keywords :
antenna feeds; dipole antennas; log periodic antennas; multifrequency antennas; near-field communication; radar antennas; reflector antennas; LPDA apex angle; dual-frequency constant beamwidth reflector antenna; focused near-field; frequency dependent phase center displacement; harmonic radar; log-period dipole antenna feed; reflector defocusing effects; Antenna feeds; Broadband antennas; Dipole antennas; Harmonic analysis; Radar; Radar antennas;
Conference_Titel :
Antenna Technology and Applied Electromagnetics (ANTEM), 2014 16th International Symposium on
Conference_Location :
Victoria, BC
DOI :
10.1109/ANTEM.2014.6887680
