Patents by Inventor Gert Draijer

Gert Draijer 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).

  • Orthogonal frequency division multiplexing transceiver and method of operating the same
    Patent number: 7058379
    Abstract: For use in an orthogonal frequency division multiplexing (OFDM) transceiver, a multimode local oscillator circuit and a method of operating the same. In one embodiment, the circuit includes: (1) a single sideband mixer having an output, first and second inputs and a local oscillator input and (2) a signal generator, coupled to the single sideband mixer, for alternatively providing to the first and second inputs: (2a) constant values to cause the single sideband mixer to generate a first receiver local oscillator signal for operating the OFDM transceiver as a zero intermediate frequency receiver and (2b) a first orthogonal baseband signal to cause the single sideband mixer to generate a second receiver local oscillator signal for operating the OFDM transceiver as a low intermediate frequency receiver.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: June 6, 2006
    Assignee: Agere Systems, Inc.
    Inventor: Gert Draijer
  • Orthogonal frequency division multiplexing transceiver and method of operating the same
    Publication number: 20040235444
    Abstract: For use in an orthogonal frequency division multiplexing (OFDM) transceiver, a multimode local oscillator circuit and a method of operating the same. In one embodiment, the circuit includes: (1) a single sideband mixer having an output, first and second inputs and a local oscillator input and (2) a signal generator, coupled to the single sideband mixer, for alternatively providing to the first and second inputs: (2a) constant values to cause the single sideband mixer to generate a first receiver local oscillator signal for operating the OFDM transceiver as a zero intermediate frequency receiver and (2b) a first orthogonal baseband signal to cause the single sideband mixer to generate a second receiver local oscillator signal for operating the OFDM transceiver as a low intermediate frequency receiver.
    Type: Application
    Filed: May 19, 2003
    Publication date: November 25, 2004
    Applicant: Agere Systems, Inc.
    Inventor: Gert Draijer