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:
Sep. 22, 2015
Filed:
Dec. 16, 2013
Anritsu Corporation, Kanagawa, JP;
Toru Otani, Kanagawa, JP;
Norihiro Akiyama, Kanagawa, JP;
ANRITSU CORPORATION, Kanagawa, JP;
Abstract
To provide a signal analysis apparatus and a signal analysis method which can expand a dynamic range. A spectrum analyzerincludes a frequency conversion unitthat includes an S-ATTwhich adjusts the level of an analog input signal and converts the input signal into a predetermined intermediate frequency signal, a V-ATTthat adjusts the level of an output signal from the frequency conversion unit, an ADCthat converts an output signal from the V-ATTinto a digital signal, an f-response correction filterthat corrects the frequency response of an output signal from the ADC, and a noise floor level subtraction unitthat subtracts the noise level of the ADCfrom a noise floor level indicating an overall noise level of the S-ATTto the f-response correction filterin a predetermined frequency band.