×

Handheld obstacle penetrating motion detecting radar

  • US 5,345,240 A
  • Filed: 08/04/1993
  • Issued: 09/06/1994
  • Est. Priority Date: 08/04/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A motion detecting radar system that is adapted to detect motion of a moving object, said system comprising:

  • a frequency tunable continuous wave transmitter comprising a voltage tuned oscillator, an antenna, and a mixer coupled to the voltage tuned oscillator and the antenna;

    a receiver coupled to the continuous wave transmitter that comprises a signal processor that includes amplifiers adapted to receive output signals from the mixer, detectors coupled to the amplifiers for, a level shifter coupled to the detector for level shifting the detected signal, and a tone generator coupled to the level shifter for generating an audible tone whose frequency is a function of the relative motion of moving objects detected by the system;

    an FM transmitter comprising an FM antenna coupled to the receiver for transmitting the audible tone indicative of the motion of a moving object; and

    an FM receiver adapted to receive the audible tone produced by the FM transmitter and reproduce the tone to indicate the presence of moving objects detected by the system.

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