Title :
Hand-held microwave direction-of-arrival finder based on varactor-tuned analog aerial beamforming
Author :
Ohira, Takashi ; Gyoda, Koichi
Author_Institution :
ATR Adaptive Commun. Res. Labs., Kyoto, Japan
Abstract :
A newly developed prototype microwave direction-of-arrival (DOA) finder is presented. Varactor-loaded passive radiators around the main monopole radiator steer the beam in the full 360-degree azimuth angles. Unlike digital beamforming (DBF) approaches, only one RF receiver is needed for estimating the DOA. This simplicity provides sufficient light weight for hand-held portability, and low power consumption for 4-hour continuous battery operation.
Keywords :
UHF antennas; array signal processing; direction-of-arrival estimation; directive antennas; microwave antenna arrays; monopole antenna arrays; radio direction-finding; tuning; varactors; 2.484 GHz; 4 hour; RF receiver; battery operation; direction-of-arrival finder; directivity formulation; hand-held DOA finder; hand-held microwave navigation; high-resolution DOA finder; low power consumption; main monopole radiator; microwave DOA finder; portable DOA finder; varactor-loaded passive radiators; varactor-tuned analog aerial beamforming; Array signal processing; Batteries; Circuits; Direction of arrival estimation; Directive antennas; Energy consumption; Impedance; Prototypes; Radio frequency; Varactors;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei, Taiwan
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985441
