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:
Nov. 03, 2009
Filed:
Mar. 14, 2007
Fumihiko Aiga, Yokohama, JP;
Hiroyuki Kayano, Fujisawa, JP;
Tatsunori Hashimoto, Yokohama, JP;
Noritsugu Shiokawa, Yokohama, JP;
Fumihiko Aiga, Yokohama, JP;
Hiroyuki Kayano, Fujisawa, JP;
Tatsunori Hashimoto, Yokohama, JP;
Noritsugu Shiokawa, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A multiplexer includes: a first band-pass filter for a first channel, which is formed in a microstrip line on a dielectric substrate and has a first branching characteristic having a center frequency of fand an attenuation pole at a frequency of fa; and a second band-pass filter for a second channel, which is formed in a microstrip line on a dielectric substrate and has a second branching characteristic having a center frequency of fand an attenuation pole at a frequency of fa. The following relationships (1) to (5) are satisfied: (1) f<f; (2) f<fa; (3) fa<f; (4) f−fa<(f−f)/2; and (5) fa−f<(f−f)/2. The second branching characteristic exhibits −20 dB or less at the frequency of faand the first branching characteristic exhibits −20 dB or less at the frequency of fa
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile