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:
Jun. 09, 2015
Filed:
Jul. 30, 2013
Qualcomm Incorporated, San Diego, CA (US);
Ashok Swaminathan, Cardiff, CA (US);
Ian Galton, Del Mar, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
An oscillating circuit with linear gain is presented. The oscillating circuit may include a relaxation oscillator and a current compensation block. The relaxation oscillator includes a capacitor, a pair of resistors operative to deliver a first current to the capacitor, and a first current source adapted to generate the first current having a first predefined level. The current compensation block includes a second current source, and a pair of cross-coupled transistors coupled to the second current source and adapted to steer a current exceeding the first predefined level in the relaxation oscillator away from the capacitor and to the second current source. The proposed oscillating circuit generates an output signal which has a linear gain over a wide tuning range.