Patents by Inventor William L. Behrend

William L. Behrend has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • I.F. Delay equalizer for a UHF tv transmitter
    Patent number: 4490693
    Abstract: A group delay compensation circuit for a television transmitter comprises a signal source coupled to a series resonant circuit. A means is present for changing the resonant circuit Q without changing the amplitude of an output signal derived from the resonant circuit. A difference amplifier is coupled to the resonant circuit and to the signal source. The means can be a voltage divider and a variable resistor coupled to the divider. Changing the Q varies the group delay.
    Type: Grant
    Filed: May 18, 1983
    Date of Patent: December 25, 1984
    Assignee: RCA Corporation
    Inventor: William L. Behrend
  • Linear loading for PWM filter
    Patent number: 4336615
    Abstract: An AM broadcast transmitter uses a PWM modulator that requires a pulse width filter. It has been found that the filter load varies over the modulation cycle resulting in distortion. To overcome this problem, a varying voltage is applied to an RF driver stage during portions of the modulation cycle.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: June 22, 1982
    Assignee: RCA Corporation
    Inventors: Richard F. Abt, William L. Behrend