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. 20, 2012
Filed:
Dec. 29, 2010
Shigeru Kemmochi, Saitama-ken, JP;
Kazuhiro Hagiwara, Saitama-ken, JP;
Keisuke Fukamachi, Saitama-ken, JP;
Mitsuhiro Watanabe, Tottori-ken, JP;
Shigeru Kemmochi, Saitama-ken, JP;
Kazuhiro Hagiwara, Saitama-ken, JP;
Keisuke Fukamachi, Saitama-ken, JP;
Mitsuhiro Watanabe, Tottori-ken, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A multiband high-frequency circuit comprising a first switch SPDTfor switching the connections of a multiband antenna to transmitting circuits-T,-T and receiving circuits-R,-R of first and second communications systems, and a transmitting/receiving circuit BLT-TR of a third communications system, a diplexer circuit Dipfor branching a high-frequency signal to-R and-R or BLT-TR and a diplexer circuit Dipfor branching a high-frequency signal to-T and-T, both of which are disposed downstream of SPDT, each diplexer circuit Dip, Dipcomprising a lower-frequency-side filter and a high-frequency-side filter, a bandpass filter BPFbeing disposed downstream of the lower-frequency-side filter of the diplexer circuit Dip, and a second switch SPDTbeing disposed downstream of the bandpass filter BPF
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