Title :
A 2-D Phase-Detecting/Heterodyne-Scanning Retrodirective Array
Author :
Watanabe, Monte K. ; Pang, Ryan N. ; Takase, Brandon O. ; Akagi, Justin M. ; Shiroma, Grant S. ; Shiroma, Wayne A.
Author_Institution :
Univ. of Hawaii at Manoa, Honolulu
Abstract :
A 2-D retrodirective array based on phase detection and heterodyne scanning is presented. The system integrates two single voltage-controlled oscillator phase-shifting networks that are autonomously controlled via a phase-detecting array and control circuit that eliminates the R4 path loss typical of other retrodirective arrays. Retrodirectivity is reported for angles of 0deg, +15deg, and -15deg at a transmitting frequency of 6.5 GHz.
Keywords :
antenna accessories; antenna phased arrays; beam steering; microwave antenna arrays; phase detectors; phase shifters; voltage-controlled oscillators; 2D retrodirective array; autonomously control; frequency 6.5 GHz; heterodyne scanning; phase detection; phase-shifting networks; voltage-controlled oscillator; Antenna arrays; Beam steering; Circuits; Control systems; Directive antennas; Phase detection; Phased arrays; RF signals; Radio frequency; Voltage-controlled oscillators; Phased arrays; retrodirective arrays;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2007.909883
