Patents by Inventor Jacob Mannerstrale

Jacob Mannerstrale 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).

  • Amplitude modulation to phase modulation cancellation method in an RF amplifier
    Patent number: 6295442
    Abstract: An RF amplifier for a transmitter develops a phase modulation command representing a desired phase modulation of an RF signal, and an amplitude modulation command representing a desired amplitude modulation of the RF signal. An oscillator develops an RF input signal phase modulated based on the phase modulation command. A power amplifier receives the RF input signal and amplifies the RF input signal based on the amplitude modulation command to develop an RF output signal. A modulation control is operatively associated with the oscillator. The modulation control includes a phase memory for storing phase correction information correlating the amplitude modulation commands to a phase modulation error and a phase control for varying the phase modulation command based on the phase modulation error to correct for unintended phase errors created by amplitude modulation of the power amplifier.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: September 25, 2001
    Assignee: Ericsson Inc.
    Inventors: William O. Camp, Jr., Jeffrey A. Schlang, Charles Gore, Jacob Mannerstrale