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:
May. 29, 2007
Filed:
May. 23, 2003
Ken Fujita, Tokyo, JP;
Ken Fujita, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A frequency modulating device includes a frequency generator for generating a frequency-modulated, first carrier and an input terminal to which a non-modulated second carrier is input. An amplifier amplifies the second carrier. A frequency converter receives the first and second carriers for producing an intermediate frequency signal and feeds the intermediate frequency signal to an output terminal. A band-pass filter limits the frequency band of the intermediate frequency signal to output a band-limited signal. A calculator calculates the spectrum distribution of the band-limited signal. The frequency generator, input terminal, amplifier, frequency converter and output terminal are included in a semiconductor device constructed on a semiconductor wafer in the form of integrated circuit.