Title:
LADDER-TYPE ELECTRIC FILTER
Document Type and Number:
Japanese Patent JP3400524
Kind Code:
B2
Abstract:
PURPOSE: To prevent the dispersion in the characteristic depending on the arrangement state in the ladder-type electric filter F in which a thin profile is attained by arranging series resonators S1, S2 in parallel on a laminator comprising parallel resonators
CONSTITUTION: A broadwise overlapped area (x) is produced by overlapping vertically connection end faces f1, f2, of connection swells t1, t2 formed to a connection terminal board 13 and in close contact with series resonators S1, S2 and a connection end face f3 of a connection swell (u) in close contact with a parallel resonator P2. Thus, even when a press contact force is produced while each member is laminated in a case l, the connection terminal board 13 receives a nearly equal press contact force within a total width W from the left side connection swell t1 to the right side connection swell t2, then no bent is caused in the connection terminal board, production of dispersion in the characteristic due to the assembling state is prevented to the utmost and a stable filtering characteristic is attained.
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Inventors:
Tatsuo Ogawa
Yasuhiko Nakagawa
Junji Kawai
Yasuhiko Nakagawa
Junji Kawai
Application Number:
JP4205294A
Publication Date:
April 28, 2003
Filing Date:
February 15, 1994
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
H03H9/58; (IPC1-7): H03H9/58
Domestic Patent References:
| JP4121125U | ||||
| JP5657524U | ||||
| JP61151428U | ||||
| JP5455244U | ||||
| JP6244592Y1 |
Attorney, Agent or Firm:
Kitao Matsuura