Distributed constant type filter

Details Distributed constant type filter Distributed constant type filter

2005-04-12

2005-04-12

Le, Don (Department: 2819)

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

C333S202000, C333S204000

Reexamination Certificate

active

06879223

ABSTRACT:
Provided is a distributed constant type filter. In a stacked body formed by stacking a plurality of printed circuit boards, signal line coil patterns on adjacent printed circuit boards face each another and are electrically connected together at both ends, and ground line coil patterns on adjacent printed circuit boards face each other and are electrically connected together at both ends. Accordingly, the distributed constant type filter has an attenuation characteristic superior to conventional distributed constant type filters while having an equivalent circuit completely different to the conventional distributed constant type filters. In addition, attenuation characteristics can be obtained without being greatly affected by a deviation upon a manufacturing process, and a process of manufacturing the filter is simple.

REFERENCES:
patent: 6170154 (2001-01-01), Swarup
patent: 6191666 (2001-02-01), Sheen
patent: 6643924 (2003-11-01), Hirabayashi
patent: 6713162 (2004-03-01), Takaya et al.

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