Invention Grant
- Patent Title: Filter circuit and communication device
- Patent Title (中): 滤波电路及通讯装置
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Application No.: US12614684Application Date: 2009-11-09
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Publication No.: US08390370B2Publication Date: 2013-03-05
- Inventor: Sachio Iida , Atsushi Yoshizawa
- Applicant: Sachio Iida , Atsushi Yoshizawa
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-326199 20081222
- Main IPC: H03K5/00
- IPC: H03K5/00

Abstract:
There is provided a filter circuit that includes: a flying capacitor which maintains polarity when switching from an input terminal to an output terminal, and the polarity of which is reversed when switching from the output terminal to the input terminal; a first capacitor that is provided in parallel with the flying capacitor, at the input terminal of the flying capacitor; and a second capacitor that is provided in parallel with the flying capacitor, at the output terminal of the flying capacitor. The flying capacitor is switched from the input terminal to the output terminal with a delay of a predetermined time after the switching from the output terminal to the input terminal, and the flying capacitor is switched from the output terminal to the input terminal with a delay of a predetermined time after the switching from the input terminal to the output terminal.
Public/Granted literature
- US20100156564A1 FILTER CIRCUIT AND COMMUNICATION DEVICE Public/Granted day:2010-06-24
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