Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Patent
1997-11-21
1999-07-27
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 71, G01S 1393
Patent
active
059298022
ABSTRACT:
An automotive forward looking sensor (FLS) includes (a) a voltage controlled oscillator (VCO) having an input port to which a VCO control signal comprising at least one of a ramp up portion and a ramp down portion is coupled and an output port at which a transmit RF signal is provided for coupling to a transmit antenna and (b) a linearization circuit having a first input port to which a feedback signal proportional to the transmit RF signal is coupled, a second input port to which a fixed frequency reference signal is coupled and an output port at which an error signal proportional to at least one of a phase difference and a frequency difference between the feedback signal and the fixed frequency reference signal is provided, wherein the VCO control signal is a function of the error signal and wherein the at least one ramp up portion and ramp down portion has a substantially linear slope. The FLS also includes an antenna assembly having thirteen antenna beams thereby allowing accurate resolution of multiple objects at distances up to 100 meters from the FLS.
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Patent Abstracts of Japan vol. 95, No. 6, Jul. 31, 1995 & JP 07 081604A (Honda Motor Corp.), Mar. 28, 1995.
Automotive Anticollision Radar, Yukio Takimoto and Minoru Kotaki, Applied Microwave Fall 1992, pp. 70, 72, 74-78, 80-82.
Miccioli William F.
Russell Mark E.
Raytheon Company
Sotomayor John B.
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