Title:
FILTER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2003/052930
Kind Code:
A1
Abstract:
A filter circuit for passing signals within a particular frequency range and attenuating signals outside the particular frequency range, comprising series and parallel elements. Resonant elements having anti-resonant characteristics are used to constitute the series elements, while series circuits of an inductor and a capacitor are used to constitute the parallel elements.
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Inventors:
MISU KOICHIRO (JP)
IBATA KOJI (JP)
MURAI KOUJI (JP)
YOSHIDA KENJI (JP)
YAMAGATA KOUSAKU (JP)
ITOH KENJI (JP)
MURASE ISAO (JP)
KOSHINAKA MASAO (JP)
IBATA KOJI (JP)
MURAI KOUJI (JP)
YOSHIDA KENJI (JP)
YAMAGATA KOUSAKU (JP)
ITOH KENJI (JP)
MURASE ISAO (JP)
KOSHINAKA MASAO (JP)
Application Number:
PCT/JP2002/013088
Publication Date:
June 26, 2003
Filing Date:
December 13, 2002
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MISU KOICHIRO (JP)
IBATA KOJI (JP)
MURAI KOUJI (JP)
YOSHIDA KENJI (JP)
YAMAGATA KOUSAKU (JP)
ITOH KENJI (JP)
MURASE ISAO (JP)
KOSHINAKA MASAO (JP)
MISU KOICHIRO (JP)
IBATA KOJI (JP)
MURAI KOUJI (JP)
YOSHIDA KENJI (JP)
YAMAGATA KOUSAKU (JP)
ITOH KENJI (JP)
MURASE ISAO (JP)
KOSHINAKA MASAO (JP)
International Classes:
H03H7/01; H03H9/54; H03H9/58; H03H9/64; (IPC1-7): H03H9/64; H03H9/58; H03H9/54
Foreign References:
| JPS5192147A | 1976-08-12 | |||
| JPS5352344A | 1978-05-12 | |||
| US3970972A | 1976-07-20 | |||
| JPH01194603A | 1989-08-04 |
Other References:
See also references of EP 1455448A4
Attorney, Agent or Firm:
Tazawa, Hiroaki (Kasumigaseki 3-Chome Chiyoda-ku, Tokyo, JP)
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