Patents Examined by Khaeem E. Almo
  • Patent number: 7298183
    Abstract: Embodiments of the present invention include circuits and methods for dividing high frequency signals. In one embodiment the present invention includes a divider circuit comprising a differential circuit having first and second inputs to receive a first differential signal, a first frequency control input and first and second differential outputs, wherein the differential circuit has a first bias current. The divider circuit further includes a cross-coupled circuit having outputs coupled to the differential circuit outputs and a second frequency control input, wherein the cross-coupled circuit has a second bias current. Embodiments of the present invention may include circuits for controlling the relationship between bias currents and circuit parameters that vary with process or temperature or both.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: November 20, 2007
    Assignee: WiLinx Corp.
    Inventors: Ahmad Mirzaei, Mohammad E Heidari, Masoud Djafari, Rahim Bagheri