Short-range automotive radar transceiver
First Claim
1. An automotive radar transceiver, comprising:
- a transmit antenna;
a receive antenna separate and isolated from said transmit antenna;
a frequency generator for generating a voltage pulse;
a voltage-controlled oscillator (VCO) arranged to receive the voltage pulse from said frequency generator and generate a signal;
a transmitter active IMPATT multiplier module arranged to receive the signal from said VCO and generate a radar probing signal which is directed to said transmit antenna;
a heterodyne active IMPATT multiplier module arranged to receive the signal from said VCO;
a first balance mixer arranged to receive the signal from the VCO;
a second balance mixer arranged to receive a signal from said receive antenna and said heterodyne active IMPATT multiplier module and derive a first intermediate frequency (IF) signal;
a first amplifier for amplifying the output of said second balance mixer and providing the amplifier output to said first balance mixer; and
a second amplifier for amplifying the output of said first balance mixer, whereby analysis of the signal transmitted by said transmit antenna and the signal received by said receive antenna provides information for use in the vehicle.
2 Assignments
0 Petitions
Accused Products
Abstract
Automotive vehicle including a radar transceiver each including a heterodyne active IMPATT multiplier module arranged to receive a signal from a VCO, a first balance mixer arranged to receive a signal from a VCO, a second balance mixer arranged to receive a signal from a receive antenna and the IMPATT multiplier module and derive a first intermediate frequency signal, a first amplifier for amplifying the output of the second balance mixer and providing the amplifier output to the first balance mixer, and a second amplifier for amplifying the output of the first balance mixer. The vehicle also includes a processor which receives output from the second amplifier of each transceiver and generates a control signal for controlling one or more vehicular components based on the output from the second amplifier(s). The components can be part of a collision avoidance system, blind spot monitoring system and the like.
40 Citations
20 Claims
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1. An automotive radar transceiver, comprising:
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a transmit antenna;
a receive antenna separate and isolated from said transmit antenna;
a frequency generator for generating a voltage pulse;
a voltage-controlled oscillator (VCO) arranged to receive the voltage pulse from said frequency generator and generate a signal;
a transmitter active IMPATT multiplier module arranged to receive the signal from said VCO and generate a radar probing signal which is directed to said transmit antenna;
a heterodyne active IMPATT multiplier module arranged to receive the signal from said VCO;
a first balance mixer arranged to receive the signal from the VCO;
a second balance mixer arranged to receive a signal from said receive antenna and said heterodyne active IMPATT multiplier module and derive a first intermediate frequency (IF) signal;
a first amplifier for amplifying the output of said second balance mixer and providing the amplifier output to said first balance mixer; and
a second amplifier for amplifying the output of said first balance mixer, whereby analysis of the signal transmitted by said transmit antenna and the signal received by said receive antenna provides information for use in the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for generating and processing radar signals for vehicular uses, comprising:
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providing a transmit antenna and a receive antenna separate and isolated from the transmit antenna on a vehicle;
directing a voltage pulse to a voltage-controlled oscillator (VCO) which generates a signal;
dividing the signal from the VCO into three signals and directing the divided signals to a transmitter active IMPATT multiplier module arranged having a multiplication factor of 30 and providing a radar probing signal in a 76-77 GHz frequency range, to a heterodyne active IMPATT multiplier module and to a first balance mixer;
directing an output signal from the transmitter active IMPATT multiplier module to the transmit antenna;
directing a signal from the receive antenna and a signal from the heterodyne active IMPATT multiplier module to a second balance mixer which derives a first intermediate frequency (IF) signal;
amplifying the output of the second balance mixer and providing the amplified output to the first balance mixer; and
amplifying the output of the first balance mixer to form a usable signal. - View Dependent Claims (13, 14)
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15. An automotive vehicle, comprising:
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a radar transceiver including a transmit antenna;
a receive antenna separate and isolated from said transmit antenna;
a frequency generator for generating a voltage pulse;
a voltage-controlled oscillator (VCO) arranged to receive the voltage pulse from said frequency generator and generate a signal;
a transmitter active IMPATT multiplier module arranged to receive the signal from said VCO and generate a radar probing signal which is directed to said transmit antenna;
a heterodyne active IMPATT multiplier module arranged to receive the signal from said VCO;
a first balance mixer arranged to receive the signal from said VCO;
a second balance mixer arranged to receive a signal from said receive antenna and said heterodyne active IMPATT multiplier module and derive a first intermediate frequency (IF) signal;
a first amplifier for amplifying the output of said second balance mixer and providing the amplifier output to said first balance mixer; and
a second amplifier for amplifying the output of said first balance mixer; and
a processor arranged to receive the output from said second amplifier and generate a control signal for controlling a component in the vehicle based on the output from said second amplifier. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification