Patents by Inventor Wilson E. Alexander

Wilson E. Alexander 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).

  • Transistor microstrip oscillator and diode attenuator modulator
    Patent number: 4140982
    Abstract: An RF oscillator and modulator especially useful for UHF applications. The oscillator may comprise a series-tuned Colpitts circuit with the tuned circuit including microstrip transmission lines as impedance elements. The modulator includes a pair of serially connected diodes with the common terminal of the diodes receiving a modulation signal which varies the total current through the diodes. The diodes function as current-variable resistances to attenuate the carrier frequency signal in response to the modulation signal.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: February 20, 1979
    Assignee: Fairchild Camera and Instrument Corporation
    Inventor: Wilson E. Alexander
  • RF oscillator and modulator having regulated low harmonic output
    Patent number: 4047127
    Abstract: An RF oscillator and modulator produces a stable moudlated RF signal with a varying voltage source and without the requirement for critical device selection. A bias voltage for the oscillator transistor is provided by diode means at the oscillator output, the bias voltage being commuted to the transistor through the oscillator tuned circuit. Advantageously, the diode means biases a diode modulator connected to the oscillator output and to a modulation signal whereby linear operation of the diode modulator is enhanced.
    Type: Grant
    Filed: August 27, 1976
    Date of Patent: September 6, 1977
    Assignee: Fairchild Camera and Instrument Corporation
    Inventor: Wilson E. Alexander