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Loop powered radar rangefinder

  • US 6,535,161 B1
  • Filed: 11/28/2000
  • Issued: 03/18/2003
  • Est. Priority Date: 11/28/2000
  • Status: Active Grant
First Claim
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1. A pulse-echo radar rangefinder coupleable to a two-wire process control loop for measuring range to a target, comprising:

  • an antenna, a transmission line, a pulsed RF transmitter-receiver coupled by the transmission line to the antenna for transmitting RF pulses to the antenna and receiving RF pulses from the antenna, the RF pulses from the antenna including echo pulses from a target and reflected reference pulses from the antenna itself, the echo pulses being produced by radiating RF pulses from the antenna to the target and receiving reflected pulses back from the target, measurement circuitry coupled to the transmitter-receiver for determining range solely from the reference pulses and echo pulses.

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