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:
Apr. 16, 2013
Filed:
Aug. 24, 2009
Arie Van Staveren, Hazerswoude, NL;
Michael Hendrikus Laurentius Kouwenhoven, Morgan Hill, CA (US);
Arie van Staveren, Hazerswoude, NL;
Michael Hendrikus Laurentius Kouwenhoven, Morgan Hill, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A circuit is configured to receive an input signal and to produce an output signal measuring a power of the input signal. The circuit includes a multiplier cell configured to multiply first and second signals, where each of the first and second signals includes a component related to the input signal and a component related to the output signal. The circuit also includes a controlled amplifier configured to amplify an intermediate signal produced by the multiplier cell, where an amplification provided by the controlled amplifier is a function of the output signal. The circuit could further include at least one first converting amplifier configured to generate the component related to the input signal and at least one second converting amplifier configured to generate the component related to the output signal. Transconductances of the converting amplifiers could be selected to configure the circuit as a linear or logarithmic RMS power detector.