Invention Grant
- Patent Title: Filter, transmitter-receiver, and amplifying circuit
- Patent Title (中): 滤波器，收发器和放大电路
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Application No.: US12859573Application Date: 2010-08-19
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Publication No.: US08933765B2Publication Date: 2015-01-13
- Inventor: Akihiko Akasegawa
- Applicant: Akihiko Akasegawa
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Kratz, Quintos & Hanson, LLP
- Priority: JP2009-230555 20091002; JP2010-044155 20100301
- Main IPC: H01P3/08
- IPC: H01P3/08 ; H01P5/12
Abstract:
A filter includes: an input terminal to which a fundamental wave signal and a harmonic signal group of the fundamental wave signal are supplied; an output terminal configured to output the fundamental wave signal supplied to the input terminal; a transmission line configured to connect the input terminal and the output terminal; an open-end stub configured to be provided corresponding to an odd harmonic signal among the harmonic signal group, coupled to the transmission line, and has a length corresponding to one quarter of a wavelength of the corresponding odd harmonic signal; a first short-end stub configured to be coupled to the transmission line and has a length corresponding to one quarter of a wavelength of the fundamental wave signal; and a second short-end stub configured to be coupled to the transmission line.
Public/Granted literature
- US20110081873A1 FILTER, TRANSMITTER-RECEIVER, AND AMPLIFYING CIRCUIT Public/Granted day:2011-04-07
Information query
