Title:
DIELECTRIC FILTER AND METHOD FOR ADJUSTING BANDPASS CHARACTERISTICS OF SAME
Document Type and Number:
WIPO Patent Application WO1999022564
Kind Code:
A3
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 are 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.
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Inventors:
HORIE KENICHI
Application Number:
PCT/IB1998/001657
Publication Date:
July 15, 1999
Filing Date:
October 19, 1998
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS SVENSKA AB (SE)
PHILIPS SVENSKA AB (SE)
International Classes:
H01P1/203; H01P1/205; H01P1/212; H01P7/08; (IPC1-7): H01P1/203; H01P7/08
Domestic Patent References:
| WO1996019843A1 | 1996-06-27 | |||
| WO1998005120A1 | 1998-02-05 |
Foreign References:
| EP0641035A2 | 1995-03-01 |
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