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Patent Searching and Data


Title:
MULTILAYER FILTER
Document Type and Number:
WIPO Patent Application WO/1998/031066
Kind Code:
A1
Abstract:
A multilayer filter which enables constitution of a phase shifter without increasing the shape of the filter and enables miniaturization of the entire filter without causing deterioration in characteristics. Coupling sections (3A) of an input/output pattern are caused to face, via a dielectric layer (3), open ends of a plurality of strip lines (4A) provided on a dielectric layer (4). Continuous section (3B) of the input/output pattern connecting end electrodes (7A, 7B) provided on the lateral sides and the coupling sections (3A) of the input/output pattern, the end electrodes (7A, 7B), an input electrode (8A), and an output electrode (8B) are connected by an electrode pattern (5A). Thus, inductance (L1, L2) is formed.

Inventors:
Nagatomi, Yoshitaka (14-1, Saiwai-cho Suita-shi, Osaka 564, JP)
Yuda, Naoki (5-2-507, Kikugaokaminami-machi Hirakata-shi, Osaka 573, JP)
Ishizaki, Toshio (8-10-1-505, Okamoto Higashinada-k, Kobe-shi Hyogo 658, JP)
Kitazawa, Shoichi (2-11-8, Kofuen Nishinomiya-shi, Hyogo 662, JP)
Yamada, Toru (6-4-305, Myokenzaka Katano-shi, Osaka 576, JP)
Application Number:
PCT/JP1997/004906
Publication Date:
July 16, 1998
Filing Date:
December 26, 1997
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-shi, Osaka 571, JP)
Nagatomi, Yoshitaka (14-1, Saiwai-cho Suita-shi, Osaka 564, JP)
Yuda, Naoki (5-2-507, Kikugaokaminami-machi Hirakata-shi, Osaka 573, JP)
Ishizaki, Toshio (8-10-1-505, Okamoto Higashinada-k, Kobe-shi Hyogo 658, JP)
Kitazawa, Shoichi (2-11-8, Kofuen Nishinomiya-shi, Hyogo 662, JP)
Yamada, Toru (6-4-305, Myokenzaka Katano-shi, Osaka 576, JP)
International Classes:
H01P1/203; (IPC1-7): H01P1/203
Foreign References:
JPH088605A
JPH07226602A
JPH0856102A
JPH0595202A
JPH08321738A
JPH01297901A
JPH08237003A
JPH0316301A
JPH0314310A
JPH03213009A
JPH05114801A
Other References:
See also references of EP 0893839A1
Attorney, Agent or Firm:
Takimoto, Tomoyuki (Matsushita Electric Industrial Co. Ltd, 1006, Oaza Kadom, Kadoma-shi Osaka 571, JP)
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