Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1987-04-30
1988-01-26
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333204, 333219, 333246, H01P 1203, H01P 708
Patent
active
047219319
ABSTRACT:
A stripline filter includes a cylindrical substrate made of a dielectric material and having inner and outer surfaces with opposite ends thereof opened. A ground electrode is deposited on the inner surface, and on the inner surface, interdigitated electrodes are deposited. Alternately, the ground electrode may be deposited on the outer surface, and the interdigitated electrodes may be deposited on the inner surface. Thus, the stripline filter can be arranged in a compact size. Also, the ground electrode provided on the outer surface prevents electromagnetic waves generated from the interdigitated electrodes from being emitted out.
REFERENCES:
patent: 4599586 (1986-07-01), Brown
patent: 4641116 (1987-02-01), Shibata et al.
Hattori Jun
Ishikawa Youhei
Kato Hideyuki
Nishikawa Toshio
Murata Manufacturing Co. Ltd.
Nussbaum Marvin L.
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