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:
Feb. 21, 2017
Filed:
Sep. 25, 2014
Maxim Integrated Products, Inc., San Jose, CA (US);
Kevin James Witt, Colorado Springs, CO (US);
John Fisher Di Cristina, Acton, MA (US);
Maxim Integrated Products, Inc., San Jose, CA (US);
Abstract
Various embodiments of the invention enable low-power accurate measurement of complex impedance at a range of frequencies of interest to determine a frequency response of a test sample. The system requires only a few external precision components that are not integrated into a microprocessor, thereby, providing a low-cost alternative to existing designs. In certain embodiments, low-power operation is accomplished by utilizing a simplified digital signal processing scheme that requires only a small number of ADC samples. Measurement accuracy is achieved by a digital conversion to baseband that does not suffer from channel matching issues and by utilizing a single analog path.