Laminated dielectric filter, and antenna duplexer and...

Details Laminated dielectric filter, and antenna duplexer and... Laminated dielectric filter, and antenna duplexer and...

2006-10-03

2006-10-03

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S204000

Reexamination Certificate

active

07116188

ABSTRACT:
A laminated dielectric filter is formed by coupling a plurality of resonators to one another by electromagnetic-field coupling. In the laminated dielectric filter, a bypass circuit formed of a series circuit including bypass capacitors and transmission lines is provided in parallel to a magnetic-field bypass coupling between non-adjacent resonators. Thus, capacitance of the bypass capacitors can be regulated without being affected by the magnetic-field bypass coupling between the non-adjacent resonators. As a result, attenuation poles outside a passband can be controlled freely.

REFERENCES:
patent: 4965537 (1990-10-01), Kommrusch
patent: 5691674 (1997-11-01), Yorita et al.
patent: 6696903 (2004-02-01), Kawahara et al.

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