Microstripline filter and method for manufacturing the same

Details Microstripline filter and method for manufacturing the same Microstripline filter and method for manufacturing the same

2011-03-15

2011-03-15

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S219000, C029S829000

Reexamination Certificate

active

07907036

ABSTRACT:
A microstripline filter in which characteristics of a plurality of resonators which are connected to one another in a manner of inductive coupling are precisely set. The microstripline filter includes a ground electrode, main-surface lines, common electrodes, short-circuit electrodes, and input/output electrodes. The ground electrode is arranged on a lower surface of a dielectric substrate having a rectangular plate shape. The plurality of main-surface lines are arranged on an upper surface of the dielectric substrate and form respective resonators. The common electrodes connect some of the main-surface lines to one another in conduction states. The plurality of short-circuit electrodes connect a group of the main-surface lines which are brought to conduction states by the common electrodes to the ground electrode through an identical side surface of the dielectric substrate. The input-and-output electrodes are connected to corresponding ones of the resonators including the main-surface lines.

REFERENCES:
patent: 5521564 (1996-05-01), Kaneko et al.
patent: 56-105902 (1981-08-01), None
patent: 10-065401 (1998-03-01), None
patent: 2006-270508 (2006-10-01), None
patent: 2007-180684 (2007-07-01), None

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