Patents by Inventor Eric K. Schroeter

Eric K. Schroeter 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).

  • Switch adaptable radio frequency amplifier
    Patent number: 5216378
    Abstract: A radio frequency variable gain amplifier (204) has a plurality of outputs. The amplifier (204) includes a transistor amplifier (330) having a plurality of switchable fixed gain states for amplifying an oscillator signal. The amplifier (204) includes a biasing circuit (302, 306, 312, and 316) for selectively biasing the transistor amplifier (330) to produce the plurality of switchable fixed gain states. The biasing circuit (302, 306, 312, and 316) includes switches (310 and 320) for switching between the switchable fixed gain states of the transistor amplifier (330).
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: June 1, 1993
    Assignee: Motorola, Inc.
    Inventors: Stephen B. Einbinder, Eric K. Schroeter, Leng H. Ooi