Abstract
Two different 35 GHz low-cost rf front-end Doppler units suited for automotive applications have been constructed. The homodyne unit consists of both receiving and transmitting corporate-fed microstrip patch array antennas, a microstrip directional coupler, a monolithic GaAs fected oscillator and an integrated single Schottky diode mixer. The autodyne configuration uses only one antenna and the fected as a self-oscillating mixer. Inexpensive microstrip technology has been used which yields a good compromise between cost factor and technical performance.
Rféumé
Deux unités d’entrée radiofréquence Doppler adaptées à des applications en automobile ont été construites. La configuration homodyne comprend les antennes d’émission et de réception, qui sont des antennes plaques en réseau réalisées en technologie microruban et alimentées selon une méthode originale, un coupleur directif en microruban, un oscillateur fected (dispositif à transfert d’électrons commandé par effet de champ) en technologie monolithique au GaAs, et un melangeur intégré à diode Schottky. La configuration autodyne n’utilise qu’une seule antenne et un fected servant de mélangeur auto-oscillant. Une technologie microruban peu coûteuse offre un bon compromis entre coût et performance technique.
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This work was supported by the Austrian Science Foundation (fwf) under contract No. P8697 and by the Österreichische Gesellschaft für Mikroelektronik (gme).
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Efanov, A.A., Diskus, C.G., Stelzer, A. et al. Development of a low-cost 35 GHz radar sensor. Ann. Télécommun. 52, 219–223 (1997). https://doi.org/10.1007/BF02996047
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DOI: https://doi.org/10.1007/BF02996047