The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2008
Filed:
Sep. 19, 2006
Song-rong Han, Taipei County, TW;
Ming-shih Yu, Taipei County, TW;
Song-Rong Han, Taipei County, TW;
Ming-Shih Yu, Taipei County, TW;
Faraday Technology Corp., Hsin-Chu, TW;
Abstract
An automatic switching phase-locked loop (PLL) is disclosed, including a phase detector, a charge pump generating a pump current, a band selector receiving a control voltage to produce a band selection signal and a voltage setting signal based the control voltage, a loop filter generating the control voltage corresponding to the pump current and setting the control voltage based on the voltage setting signal, and a multi-band voltage control oscillator (VCO) coupled to the control voltage and the band selection signal, selecting one of a plurality of operating bands based on the band selection signal, and providing an output signal of a frequency within the selected operating band based on the control voltage.