Compact tunable dual band stop filter

Details Compact tunable dual band stop filter Compact tunable dual band stop filter

2011-03-29

2011-03-29

Jones, Stephen E (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S202000

Reexamination Certificate

active

07915978

ABSTRACT:
Various exemplary embodiments include a technique for tuning a filter to have two stop bands. This technique may involve combination of signals from a plurality of high-band notch resonators and low-band notch resonators. Loop wires may couple both high-band and low-band notch resonators to a central conductor, thereby enabling the central conductor to transmit a signal having dual stop bands.

REFERENCES:
patent: 4862122 (1989-08-01), Blair et al.
patent: 5949309 (1999-09-01), Correa
patent: 2006/0071737 (2006-04-01), Puoskari
patent: 2007/0052495 (2007-03-01), Wada

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