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:
Jun. 24, 2008
Filed:
Jul. 25, 2005
Eiji Suematsu, Nara, JP;
Keisuke Satoh, Tenri, JP;
Eiji Suematsu, Nara, JP;
Keisuke Satoh, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
According to the radio receiver, a first path Pincluded in a frequency conversion circuitdoes not have a filter, and a filterfor extracting a reference signalis provided in a second path Pso that a second IF multiple signaland the reference signalare multiplied together in a mixer section. Consequently, by extracting the reference signal, the filterin the second path Poperates as a local oscillation signal source synchronized with the second IF multiple signal. Therefore, according to the signal obtained by down-conversion of the second IF multiple signalwith use of the reference signalin the mixer section, signals identical in quality to input signals inputted on the transmission side can be reproduced.