Dielectric filter and method for adjusting bandpass characteristics of same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 3, 2000
Grant Date -
N/A
app pub date -
Oct 30, 1998
filing date -
Oct 30, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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