Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1998-10-30
2000-10-03
Pascal, Robert
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333205, 333185, H01P 1203
Patent
active
061279056
ABSTRACT:
A dielectric filter (10) comprises two stripline resonators (20, 40) which are arranged on parallel planes, respectively, with dielectric layers (10d, 10e) being sandwiched therebetween and are electromagnetically coupled to each other. Each of the two stripline resonators (20, 40) comprises a first stripline portion grounded at a proximal end thereof and a second stripline portion extending from a distal end of the first stripline portion in the same direction as the first stripline portion extends. The width of the first stripline portion is slightly less than that of the second stripline portion. Side edges of the second stripline portion is shifted relative to respective side edges of the first stripline portion in the same direction which is perpendicular to the direction in which the first and second stripline portions extend. A generally rectangular notch extends in the second stripline portion from one side edge thereof.
REFERENCES:
patent: 5374909 (1994-12-01), Hirai et al.
patent: 5406235 (1995-04-01), Hayashi
patent: 5489881 (1996-02-01), Yuda et al.
Halajian Dicran
Pascal Robert
Summons Barbara
U.S. Philips Corporation
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