Title :
A Retrodirective Array Based on Phase Detection and Frequency Scanning
Author :
Watanabe, Monte K. ; Shiroma, Grant S. ; Takase, Brandon O. ; Akagi, Justin M. ; Shiroma, Wayne A.
Author_Institution :
Univ. of Hawaii at Manoa, Honolulu
Abstract :
A novel retrodirective array consisting of a single-VCO frequency-scanned array with phase-detecting control circuitry is presented. An analog third-order polynomial control circuit is used to precision-match the phase detection error voltage to the VCO tuning voltage characteristic for accurate steering. The interrogator and retrodirective transmit frequencies are 1.0 GHz and 7.3 GHz, respectively. Retro-directivity is reported for angles of 0deg, -20deg, and +15deg.
Keywords :
antenna phased arrays; beam steering; phase detectors; VCO tuning voltage characteristic; analog third-order polynomial control circuit; beam steering; control circuitry; frequency 1 GHz; frequency 7.3 GHz; interrogator; phase detection error voltage; retrodirective array; single-VCO frequency-scanned array; Antenna arrays; Circuit optimization; Detectors; Frequency; Phase detection; Phase shifters; Phased arrays; Sensor arrays; Voltage control; Voltage-controlled oscillators; Beam steering; phased arrays; retrodirective array;
Conference_Titel :
Microwave Symposium, 2007. IEEE/MTT-S International
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0688-9
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2007.380039
