Title :
Variable beamforming characterization of a 3-element dipole ESPAR antenna from a complexity-of-directivity viewpoint
Author :
Sakai, Naoki ; Uehara, Hideyuki ; Ohira, Takashi
Author_Institution :
Dept. of Inf. & Comput. Sci., Toyohashi Univ. of Technol., Toyohashi, Japan
Abstract :
This paper characterizes 3-element ESPAR antenna´s variable beamforming performance from a viewpoint of directivity complexity. We measure and analyze antenna about radiation directivity. The result shows that directivity pattern is numerous and we classify it into 6 specific patterns. The said directivity patterns are mapped on varactor-voltage plane. We propose Locus Line Length (LLL) to be an index for the purpose of evaluating directivity complexity, which combines phase and amplitude. Then the LLL result is plotted on varactor-voltage plane.
Keywords :
antenna radiation patterns; array signal processing; dipole antennas; directive antennas; 3-element dipole ESPAR antenna; antenna radiation directivity pattern analysis; directivity complexity evaluation; locus line length; varactor-voltage plane; variable beamforming characterization; Antenna arrays; Antenna measurements; Array signal processing; Centralized control; Dipole antennas; Directive antennas; Multiaccess communication; Space technology; Varactors; Wireless communication; ESPAR antenna; performance directional variable; spatial correlation;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5384253
