Title :
An inter-element phase-detecting retrodirective array for nonuniform wavefronts
Author :
Zamora, Alexis ; Watanabe, Monte K. ; Akagi, Justin M. ; Chun, Tyler F. ; Shiroma, Wayne A.
Author_Institution :
Dept. of Electr. Eng., Univ. of Hawaii at Manoa, Honolulu, HI, USA
Abstract :
A retrodirective array designed to respond to nonuniform wavefronts is presented. The design overcomes the limitations of existing phase-detection-based retrodirective array architectures by measuring the phase difference between adjacent element pairs to increase array resolution. The transmit and receive frequencies are 2.45 and 2.4 GHz, respectively. Measurements demonstrate the ability to retrodirect to both single and multiple interrogators.
Keywords :
antenna phased arrays; array signal processing; beam steering; signal resolution; array resolution; beam steering; frequency 2.45 GHz; interelement phase-detecting retrodirective antenna array design; nonuniform wavefront; phase difference; phased antenna array; Antenna arrays; Circuits; Detectors; Electromagnetic scattering; Frequency; Phase detection; Phase measurement; Phased arrays; Principal component analysis; Signal resolution; Beam steering; phased arrays; retrodirective array;
Conference_Titel :
Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2803-8
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2009.5165822
