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. 11, 2007
Filed:
Oct. 14, 2003
Hiroshi Miyagi, Jouetsu, JP;
Hiroshi Katsunaga, Kariya, JP;
Hiroshi Miyagi, Jouetsu, JP;
Hiroshi Katsunaga, Kariya, JP;
Niigata Seimitsu Co., Ltd., Niigata, JP;
Abstract
A receiver of double conversion system wherein unwanted components included in received signals can be removed without fail and wherein the number of constituent parts has been reduced. The receiver comprises an antenna tuning circuitincluding a tuning coiland a variable-capacitance diode; a high frequency amplification circuitfor performing a high frequency amplification of a signal outputted by the antenna tuning circuit; two-stage mixing circuitsfor performing two frequency conversions of an output from the high frequency amplification circuit; and a detecting circuitfor detecting an output from the latter-stage mixing circuit