Patents by Inventor Allen Nan He

Allen Nan He 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).

  • Methods and apparatuses for inductor tuning in radio frequency integrated circuits
    Patent number: 8405467
    Abstract: An apparatus for matching impedance within a Radio Frequency (RF) integrated circuit is presented. The apparatus includes a first impedance element placed in an RF signal path, an first inductor fabricated on the integrated circuit and connected to the first impedance element, and an adjustable capacitance circuit connected in series with the first inductor and placed between the first inductor and a ground node, where the adjustable capacitance circuit is adjusted to tune the inductance of the first inductor. A method for tuning an inductor is presented. The method includes ascertaining a target inductance value for an inductor in a RF integrated circuit, and determining a capacitance value of an adjustable capacitance circuit so that, when coupled to the inductor, the combined impedance of the adjustable capacitance circuit and the inductor is tuned to the ascertained target inductance value.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: March 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventor: Allen Nan He
  • METHODS AND APPARATUSES FOR INDUCTOR TUNING IN RADIO FREQUENCY INTEGRATED CIRCUITS
    Publication number: 20090134949
    Abstract: An apparatus for matching impedance within a Radio Frequency (RF) integrated circuit is presented. The apparatus includes a first impedance element placed in an RF signal path, an first inductor fabricated on the integrated circuit and connected to the first impedance element, and an adjustable capacitance circuit connected in series with the first inductor and placed between the first inductor and a ground node, where the adjustable capacitance circuit is adjusted to tune the inductance of the first inductor. A method for tuning an inductor is presented. The method includes ascertaining a target inductance value for an inductor in a RF integrated circuit, and determining a capacitance value of an adjustable capacitance circuit so that, when coupled to the inductor, the combined impedance of the adjustable capacitance circuit and the inductor is tuned to the ascertained target inductance value.
    Type: Application
    Filed: November 27, 2007
    Publication date: May 28, 2009
    Applicant: QUALCOMM INCORPORATED
    Inventor: Allen Nan He