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:
Jul. 15, 2008
Filed:
May. 01, 2006
Mohandas Palatholmana Sivadasan, Bangalore, IN;
Gajendar Rohilla, Bangalore, IN;
Mohandas Palatholmana Sivadasan, Bangalore, IN;
Gajendar Rohilla, Bangalore, IN;
Cypress Semiconductor Corporation, San Jose, CA (US);
Abstract
A delay cell circuit () is disclosed. The delay cell circuit may include a differential stage () and a cross-coupled stage (). The cross-coupled stage can include resistors (-and-) the function to reduce a gain. The differential stage () and cross-coupled stage () can include variable currents sources (and), respectively. As frequency of operation increases, variable current source () provides a larger current to the differential stage () and variable current source () provides a smaller current to cross-coupled stage (). Delay cell circuit () may be used in a voltage controlled oscillator (VCO). By including gain attenuating devices such as resistors (-and-), a frequency tuning range of the VCO may be increased.