Title :
A 62/66 GHz frequency offset retrodirective array
Author :
Buchanan, N.B. ; Brabetz, T. ; Fusco, V.F.
Author_Institution :
Dept. of Electr. & Electron. Eng., Queen´s Univ., Belfast, UK
Abstract :
Measured and predicted results are presented for a 62/66 GHz frequency offset retrodirective array. Measurements show the array to produce a self steered monostatic 3 dB beamwidth of 22.5/spl deg/. Predictions carried out using an active element approach showed close agreement with a theoretical value of 21/spl deg/, confirming for the first time, frequency offset retrodirective action in the millimetre wave region. In addition, amplitude/pulse modulation was shown to be readily applied to the re-transmit self-steered signal. This work enables a variety of. short range mm-wave broadband wireless links and sensor applications such as asset tagging.
Keywords :
active antenna arrays; amplitude modulation; millimetre wave antenna arrays; pulse modulation; 62 GHz; 66 GHz; active element approach; amplitude/pulse modulation; asset tagging; frequency offset retrodirective array; millimetre wave region; re-transmit self-steered signal; self steered monostatic 3 dB beamwidth; sensor applications; short range broadband wireless links; Antenna arrays; Antenna measurements; Circuits; Frequency diversity; Frequency measurement; Polarization; Radio spectrum management; Receiving antennas; Repeaters; Wireless sensor networks;
Conference_Titel :
Microwave Symposium Digest, 2002 IEEE MTT-S International
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-7239-5
DOI :
10.1109/MWSYM.2002.1011620
