Patents Examined by Tod R. Rohm
  • Continuous-wave reflection transmissometer with target discrimination using modulated targets
    Patent number: 5345243
    Abstract: The attenuation of electromagnetic waves by a transmission medium is detected or measured by directing a continuous periodic electromagnetic wave toward a reflector. The reflector is modulated to modulate the electromagnetic wave as it is reflected. The reflected wave is received and an output signal related monotonically to the power of the modulated reflected wave is detected. The output signal is then compared to the output signal which is or would be obtained under various other transmission conditions.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: September 6, 1994
    Assignee: The Ohio State University Research Foundation
    Inventor: Curt A. Levis