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:
Oct. 06, 2015
Filed:
Apr. 12, 2012
Ngar Loong A. Chan, Santa Clara, CA (US);
Ngar Loong A. Chan, Santa Clara, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
A frequency divider circuit having two stages of transistors has improved performance at low supply voltages. The circuit may include cross-coupled PMOS and NMOS transistors, in which the input signal to be frequency divided is supplied to the body of the PMOS and/or NMOS transistors. The input signal may be coupled to the PMOS and/or NMOS transistors through capacitive or inductive coupling. The input signal to the PMOS and/or NMOS transistors may be generated by a voltage controlled oscillator circuit. With the frequency divider circuit having inputs signals coupled to the body of the PMOS and/or NMOS transistors supply voltages as low as 0.5 Volts may be possible.