Radar module for radar system on motor vehicle
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsHiroyuki Andou, Shigeki Katou
Life of this patent
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Abstract
A FM radar alarm system for use on a motor vehicle detects a following motor vehicle in an adjacent lane behind the motor vehicle. The FM radar alarm system includes an FM radar module including a near-region monitoring antenna and a far-region monitoring antenna. The near-region monitoring antenna radiates a relatively wide radio-wave beam in a near region positioned behind the motor vehicle and extending over an adjacent lane. The far-region monitoring antenna radiates a relatively narrow radio-wave beam in a far region positioned behind the motor vehicle and extending over the adjacent lane.
Claims10
A radar module for a radar alarm system on a motor vehicle for detecting a motor vehicle in an adjacent lane behind the motor vehicle, comprising:
- a near-region monitoring antenna for radiating a relatively wide electromagnetic-wave beam in a near region positioned behind the motor vehicle and extending over an adjacent lane;
- and
- a far-region monitoring antenna for radiating a relatively narrow electromagnetic-wave beam in a far region positioned behind the motor vehicle and extending over the adjacent lane.
A radar module for a radar alarm system on a motor vehicle for detecting a motor vehicle in an adjacent lane behind the motor vehicle, comprising:
- a near-region monitoring antenna for radiating a relatively wide radio-wave beam in a near region positioned behind the motor vehicle and extending over an adjacent lane, and receiving a reflected radio-wave beam;
- a far-region monitoring antenna for radiating a relatively narrow radio-wave beam in a far region positioned behind the motor vehicle and extending over the adjacent lane, and receiving a reflected radio-wave beam;
- a radio-wave signal generator for generating a radio-wave signal;
- a transmission path including an electric energy coupler for supplying the radio-wave signal from said radio-wave signal generator to said near-region monitoring antenna and said far-region monitoring antenna;
- and
- a mixer coupled to said transmission path for generating a beat signal by mixing at least one of the reflected radio-wave signal beams with the radio-wave signal generated by said radio-wave signal generator.
An FM radar module for a radar alarm system on a motor vehicle for detecting a motor vehicle in an adjacent lane behind the motor vehicle, comprising:
- a near-region monitoring antenna for radiating a relatively wide FM signal beam in a near region positioned behind the motor vehicle and extending over an adjacent lane, and receiving a reflected FM signal beam;
- a far-region monitoring antenna for radiating a relatively narrow FM signal beam in a far region positioned behind the motor vehicle and extending over the adjacent lane, and receiving a reflected FM signal beam;
- an FM signal generator for generating an FM signal;
- a transmission path including an electric energy coupler for supplying the FM signal from said FM signal generator to said near-region monitoring antenna and said far-region monitoring antenna;
- and
- a mixer coupled to said transmission path for generating a beat signal by mixing at least one of the reflected FM signal beams with the FM signal generated by said FM signal generator.
Dependencies are inferred from the claim text.