Patents by Inventor Anthony E. Hilling

Anthony E. Hilling 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).

  • Electronic amplifier circuit arrangements
    Patent number: 4275360
    Abstract: A push-pull amplifier arrangement for driving a radio transmitter is shown. It comprises two high power transistors connected in push-pull through the primary winding of an output transformer. The base-emitter circuit of each transistor has a separate and independent input drive circuit each comprising a respective frequency-dependent impedance circuit and a respective transformer. The transistors are biased to operate in Class AB. The use of completely independent drive circuits reduces distortion and this effect is assisted by the frequency-dependent impedance circuits.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: June 23, 1981
    Assignee: Racal Communications Equipment
    Inventors: Kenneth E. Gill, Anthony E. Hilling