Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Patent
1998-03-30
2000-02-29
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
342 89, 342128, G01S 1334
Patent
active
060314834
ABSTRACT:
A transmission channel selection controller intermittently energizes transmission amplifiers indicated by transmission channel information, based on a modulation signal supplied from a modulation signal generator, to modulate an FM signal. The modulated FM signal is radiated as a beam from transmission antennas. When the beam is reflected as an echo beam by an object, the echo beam is received by reception antennas which supply a reception signal to reception amplifiers. A first mixer mixes the FM signal with the amplified reception signal, producing a modulated beat signal which is a beat signal representing the distance up to the object and modulated by the frequency of the modulation signal. A second mixer mixes the modulated beat signal with the modulation signal thereby demodulating the modulated beat signal into the beat signal.
REFERENCES:
patent: Re36095 (1999-02-01), Urabe et al.
patent: 3811774 (1974-05-01), Honetcutt et al.
patent: 4666295 (1987-05-01), Duvall, III et al.
patent: 5369409 (1994-11-01), Urabe et al.
patent: 5448244 (1995-09-01), Komatsu et al.
patent: 5583511 (1996-12-01), Hulderman
patent: 5731781 (1998-03-01), Reed
Komatsu Satoru
Urabe Masanobu
Honda Giken Kogyo Kabushiki Kaisha
Sotomayor John B.
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