×

HARMONIC RADAR DETECTING AND RANGING SYSTEM FOR AUTOMOTIVE VEHICLES

  • US 3,781,879 A
  • Filed: 06/30/1972
  • Issued: 12/25/1973
  • Est. Priority Date: 06/30/1972
  • Status: Expired due to Term
First Claim
Patent Images

1. A detecting and ranging system for use with an automotive vehicle, comprising a transmitter, a receiver, an output means and a directional antenna network coupled to said transmitter and said receiver;

  • said transmitter comprising means for generating electromagnetic energy signals of a predetermined frequency;

    said receiver comprising means adapted to detect electromagnetic energy signals which are derived from and harmonically related to said signals of said predetermined frequency;

    said output means being coupled to said receiver and cooperating with said receiver for producing an output signal in response to said detected signals; and

    said antenna network including means for selectively transmitting said signals of said predetermined frequency into a given transmission direction while polarizing said transmitted signals into a given polarization direction, said antenna network further including means selectively responsive only to electromagnetic signals originating from said given transmission direction, which signals have been derived from and are harmonically related to said transmitted signals and which have a polarization direction substantially orthogonal to said given polarization direction, for applying said selectively derived signals to said receiver.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×