Patents by Inventor Richard L. Calton

Richard L. Calton 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).

  • Amplifier circuit with non-linear load resistance which increases amplifier forward gain at high frequency
    Patent number: 5055799
    Abstract: An amplifier comprising a bipolar transistor with a non-linear load resistance (21) that increases the forward gain of the amplifier at high frequency. Voltage and thermal stability are provided by a chain of diodes (18) providing the input bias. Supply rail ripples introduced to the circuit via the input and via an output stage transistor (11), are in antiphase and the amplitude of the component introduced via the output stage transistor (11) can be tuned (FIG. 3) by varying the load resistance on the output stage transistor.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: October 8, 1991
    Assignee: British Telecommunications public limited company
    Inventor: Richard L. Calton