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. 05, 2007
Filed:
Apr. 24, 2006
Hao San, Gunma, JP;
Haruo Kobayashi, Gunma, JP;
Hiroki Wada, Gunma, JP;
Akira Hayakawa, Gunma, JP;
Hiroyuki Hagiwara, Gunma, JP;
Yoshitaka Jingu, Gunma, JP;
Kazuyuki Kobayashi, Gunma, JP;
Toshiro Tsukada, Tokyo, JP;
Hao San, Gunma, JP;
Haruo Kobayashi, Gunma, JP;
Hiroki Wada, Gunma, JP;
Akira Hayakawa, Gunma, JP;
Hiroyuki Hagiwara, Gunma, JP;
Yoshitaka Jingu, Gunma, JP;
Kazuyuki Kobayashi, Gunma, JP;
Toshiro Tsukada, Tokyo, JP;
Semiconductor Technology Academic Research Center, Yokohama-shi, JP;
Abstract
In a first-order complex band-pass filter, multiplexers are alternately switched over between time intervals of phases A and B, where the multiplexers includes two multiplexers provided at input and output stages, and a multiplexer provided in a feedback circuit of each of first-order filters and being switching over whether to invert a sign of a feedback signal. Then in a circuit part sandwiched between the multiplexers, a processing performed by an I circuit part and a processing performed by a Q circuit part are alternately switched over so that a sign of a signal inputted to an adder is inverted.