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:
Jul. 18, 2006
Filed:
Mar. 24, 2000
Yasuaki Namura, Kanagawa, JP;
Yasuaki Namura, Kanagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A quadrature demodulator' and a quadrature modulator′ convert a reception intermediate frequency signalinto reception baseband signalsand, and also convert transmission baseband signalsandinto a transmission intermediate frequency signal, respectively. While local oscillation signals having frequencies suitable for the respective bands are outputted from a commonly used local oscillator, such a local oscillation signal obtained by shifting a phase thereof π/2 by a phase shifteris supplied to one mixer of quadrature mixersand, and such a signal obtained by inverting, or not inverting the plurality of the local oscillation signal by an exclusive OR gate circuitin response to a band switching signalis supplied to the other mixer of quadrature mixersand
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile