Patents by Inventor Richard E. Lunquist

Richard E. Lunquist 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).

  • Multi-channel transceiver using a single high-stability element
    Patent number: 4450583
    Abstract: A multi-channel transceiver uses a single high-stability crystal to generate a signal that is multiplied to a frequency near a desired transmitting and receiving frequency. The multiplied frequency is mixed with the output of an offset oscillator having a frequency selected so that the sum or difference of the two frequencies is a desired transmission frequency and the other of the sum or difference is an appropriate frequency for a local oscillator. The offset oscillator may use crystals of lower frequency stability than that of the single high-stability crystal.
    Type: Grant
    Filed: November 23, 1981
    Date of Patent: May 22, 1984
    Assignee: Motorola, Inc.
    Inventors: Russell A. Strobel, Jawdat Rihani, Richard E. Lunquist
  • Audio amplifier output circuit
    Patent number: 4146845
    Abstract: A PNP/NPN complementary pair of common emitter connected output transistors are driven by separate differential amplifiers having unity feedback and biasing to prevent simultaneous operation. Only a single battery supply is required.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: March 27, 1979
    Assignee: Motorola, Inc.
    Inventor: Richard E. Lunquist