Patents Assigned to WiLinx Corp.
  • Wireless Communication Systems and Methods
    Publication number: 20090185545
    Abstract: Embodiments of the present invention transmit signals simultaneously over a communication channel at different RF center frequencies, and may use a single power amplifier and antenna. In one embodiment the present invention includes a method of transmitting information in a wireless communication channel comprising receiving digital signals having data to be transmitted, converting the signals to analog signals, up-converting each analog signal, combining the up-converted signals, amplifying the combined up-converted signal and transmitting the combined up-converted signal. In one embodiment, the same data is sent over a transmission channel at two different frequencies to improve reliability.
    Type: Application
    Filed: January 23, 2008
    Publication date: July 23, 2009
    Applicant: WiLinx, Corp.
    Inventors: Alireza Tarighat-Mehrabani, Rahim Bagheri, Alireza Mehrnia, Mahmoud Darvishzadeh
  • Wideband attenuator circuits and methods
    Patent number: 7365617
    Abstract: Embodiments of the present invention include wideband attenuator circuits and methods. In one embodiment the present invention includes a first divider circuit coupled in series with two or more second divider circuits. The divider circuits include resistance and capacitance values that may be set according to particular relationships. In one embodiment, a wideband attenuator may include capacitors that are selectively coupled to each output node.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: April 29, 2008
    Assignee: WiLinx Corp.
    Inventors: Edris Rostami, Rahim Bagheri, Masoud Djafari
  • Wideband attenuator circuits and methods
    Patent number: 7304550
    Abstract: Embodiments of the present invention include wideband attenuator circuits and methods. In one embodiment the present invention includes a first divider circuit coupled in series with two or more second divider circuits. The divider circuits include resistance and capacitance values that may be set according to particular relationships. In one embodiment, a wideband attenuator may include capacitors that are selectively coupled to each output node.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: December 4, 2007
    Assignee: WiLinx, Corp.
    Inventors: Edris Rostami, Rahim Bagheri, Masoud Djafari
  • High frequency divider circuits and methods
    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