Title :
Surface-wave coupling of active antennas for homodyne sensor systems
Author :
Rasshofer, R.H. ; Biebl, E.M.
Author_Institution :
Inst. fur Hochfrequenztech., Tech. Univ. Munchen, Germany
Abstract :
In this paper, we present a novel method for significantly enhancing the performance of low cost millimeter wave sensors systems based on active integrated antennas. Our method uses the planar active antenna´s parasitic surface-wave field as a LO signal for a mixing rectenna. Compared to a self-mixing active 67 GHz antenna, the surface-wave coupled rectenna receiver shows a considerably improved MDS (10 dB lower) and the possibility for high quality homodyne I/Q signal detection.
Keywords :
IMPATT oscillators; active antennas; millimetre wave antennas; millimetre wave detectors; millimetre wave oscillators; radar antennas; rectification; surface electromagnetic waves; transceivers; 67 GHz; EHF; LO signal; MM-wave radar; active integrated antennas; homodyne I/Q signal detection; homodyne sensor systems; low cost sensors systems; millimeter wave sensors systems; mixing rectenna; parasitic surface-wave field; planar active antennas; rectifying antenna; surface-wave coupled rectenna receiver; surface-wave coupling; Costs; Millimeter wave radar; Millimeter wave technology; Noise level; Oscillators; Radar antennas; Rectennas; Schottky diodes; Sensor systems; Surface waves;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.700862
