Patents by Inventor Wenjun Feng

Wenjun Feng 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).

  • Method and device for controlling a power amplifier configured to use nonlinearity correction and a power amplifier system
    Patent number: 9577592
    Abstract: There is disclosed a method for controlling a power amplifier capable of utilizing nonlinearity correction in a nearly steady operation status of non-linearity correction, in a periodical fast switching system in time domain. The method may comprise receiving a periodic switch signal indicating switch time of the periodical fast switching system; and providing, based on the periodic switch signal, a pre-bias signal with a pre-determined voltage amplitude to the power amplifier for a pre-determined time period before each downlink time slot to preheat a transistor of the power amplifier so as to compensate a temperature change of a die inside the transistor.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: February 21, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Lei Liu, Linsheng Liu, Fan He, Wenjun Feng
  • Method and Device for Controlling a Power Amplifier Capable of Utilizing Nonlinearity Correction and a Power Amplifier System
    Publication number: 20160006404
    Abstract: There is disclosed a method for controlling a power amplifier capable of utilizing nonlinearity correction in a nearly steady operation status of non-linearity correction, in a periodical fast switching system in time domain. The method may comprise receiving a periodic switch signal indicating switch time of the periodical fast switching system; and providing, based on the periodic switch signal, a pre-bias signal with a pre-determined voltage amplitude to the power amplifier for a pre-determined time period before each downlink time slot to preheat a transistor of the power amplifier so as to compensate a temperature change of a die inside the transistor.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 7, 2016
    Inventors: Lei Liu, Linsheng Liu, Fan He, Wenjun Feng