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. 16, 2006
Filed:
Oct. 24, 2001
Makoto Takemoto, Yokohama, JP;
Katsuyuki Kawase, Sagamihara, JP;
Tetsu Takase, Yokohama, JP;
Jun Shibata, Yokohama, JP;
Makoto Takemoto, Yokohama, JP;
Katsuyuki Kawase, Sagamihara, JP;
Tetsu Takase, Yokohama, JP;
Jun Shibata, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
While a spectrum waveform of an output signal from a subtracter () is visibly monitored, an operator controls a variable phases shifter () based upon a second control signal (CL) so that a shape of a spectrum waveform of an output signal from a subtracter () is approximated to a spectrum waveform of a desirable wave to change a phase of a local oscillation frequency signal from a local oscillator (). As a result, a phase of a duplicated loop signal is changed. Also, the operator controls a variable attenuator () based upon a first control signal (CL) so that a shape of this spectrum waveform is approximated to a spectrum waveform of a desirable wave () to change a signal level of the duplicated loop signal.