Surface-wave coupling of active antennas for homodyne sensor systems

Author

Rasshofer, Ralph H. ; Biebl, Erwin M.

Author_Institution

Inst. fur Hochfrequenztech., Tech. Univ. Munchen, Germany

Volume

46

Issue

12

fYear

1998

fDate

12/1/1998 12:00:00 AM

Firstpage

2457

Lastpage

2462

Abstract

In this paper, we present a novel method for significantly enhancing the performance of low-cost millimeter-wave sensor systems based on active integrated antennas. Our method uses the planar active antenna´s parasitic surface-wave field as a local oscillator signal for a mixing rectenna. Compared to a self-mixing active 67-GHz antenna, the surface-wave coupled rectenna receiver shows a considerably improved minimum detectable signal (10 dB lower) and the possibility for high-quality homodyne in-phase/quadrature signal detection

Keywords

Doppler radar; active antennas; homodyne detection; millimetre wave detectors; millimetre wave measurement; road vehicle radar; surface electromagnetic waves; active integrated antennas; homodyne sensor systems; in-phase/quadrature signal detection; local oscillator signal; low-cost millimeter-wave sensor systems; minimum detectable signal; mixing rectenna; parasitic surface-wave field; surface-wave coupling; Doppler radar; Millimeter wave radar; Millimeter wave technology; Pulse modulation; Radar antennas; Rectennas; Schottky diodes; Sensor systems; Signal detection; Velocity measurement;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.739235

Filename

739235