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:
Dec. 28, 2010
Filed:
Apr. 09, 2009
Guangcai Zhou, Agoura Hills, CA (US);
Tung-sheng Lin, Claremont, CA (US);
Dennis Lai, Cerritos, CA (US);
Joseph Santoru, Agoura Hills, CA (US);
Ernest C. Chen, San Pedro, CA (US);
Shamik Maitra, Redondo Beach, CA (US);
Cecilia Comeaux, Redondo Beach, CA (US);
Guangcai Zhou, Agoura Hills, CA (US);
Tung-Sheng Lin, Claremont, CA (US);
Dennis Lai, Cerritos, CA (US);
Joseph Santoru, Agoura Hills, CA (US);
Ernest C. Chen, San Pedro, CA (US);
Shamik Maitra, Redondo Beach, CA (US);
Cecilia Comeaux, Redondo Beach, CA (US);
The DIRECTV Group, Inc., El Segundo, CA (US);
Abstract
Systems and methods for characterizing amplifiers. A system for characterizing an amplifier in accordance with the present invention comprises a Gaussian signal source for generating a signal in the frequency domain, a notch filter, coupled to the Gaussian Noise source, wherein the notch filter has a notch at a specified frequency and a frequency bandwidth, the frequency bandwidth encompassing the specified frequency, an Inverse Fast Fourier Transform device, coupled to an output of the notch filter, a normalization device, coupled to the Inverse Fast Fourier Transform device, an amplifier under test, coupled to the normalization device, for amplifying the signal generated by the Gaussian signal source, and a measurement device, coupled to an output of the amplifier, for measuring a power output of the amplifier in the frequency bandwidth and a noise output at the specified notch frequency, and for calculating the ratio between the power output and the noise output.