Patents Assigned to Ceva Services Limited
  • Phase locked loop with floating capacitor boost circuit
    Patent number: 7248123
    Abstract: Charge from a charge pump of a PLL is dumped to a loop filter of the PLL. The dumped charge is temporarily stored in a capacitor, between the charge pump and the loop filter. A voltage of the capacitor is shifted, while temporarily storing the dumped charge. Other embodiments are also described and claimed.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: July 24, 2007
    Assignee: Ceva Services Limited
    Inventor: John M. Horan
  • Phase locked loop with a switch capacitor resistor in the loop filter
    Patent number: 7145400
    Abstract: A filter couples an output of a phase detector to an input of a voltage controlled oscillator. The filter has a first capacitor and a switch capacitor resistor that is in series with the first capacitor, between the first capacitor and the output of the phase detector. The switch capacitor resistor is to display a resistance that is obtained by switching back and forth a second capacitor to the first capacitor and to the phase detector output. Other embodiments are also described and claimed.
    Type: Grant
    Filed: January 20, 2005
    Date of Patent: December 5, 2006
    Assignee: Ceva Services Limited
    Inventor: John M. Horan