Dielectric filter and shield therefor

Details Dielectric filter and shield therefor Dielectric filter and shield therefor

1992-07-17

1994-01-11

Nelli, Raymond A.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333206, H01P 120

Patent

active

052785270

ABSTRACT:
A filter assembly comprised of a dielectric filter and a shield positioned about the dielectric filter. The dielectric filter may be surface-mounted upon a circuit board and includes at least one notch formed to extend along a side face surface thereof. The shield is integrally formed of two sheets of an electromagnetic wave-absorptive material interconnected by a shoulder forming a right angle to fit about two sides of the dielectric filter. At least one projecting prong, corresponding in number and position with the at least one notch of the dielectric filter, extends beyond an end surface of one of the sheets of the shield to interfittingly engage with a corresponding notch formed on the filter. The shield is positioned about the dielectric filter prior to tuning of the filter, and openings are formed to extend through the shield to permit access to the dielectric filter to permit tuning thereof once the shield is positioned thereabout.

REFERENCES:
patent: 4742562 (1988-05-01), Komusrusch
patent: 4954796 (1990-09-01), Green et al.
patent: 5023580 (1991-06-01), Kim et al.
patent: 5130682 (1992-07-01), Agahi-Kesneh et al.
patent: 5130683 (1992-07-01), Agahi-Kesneh et al.
patent: 5173672 (1992-12-01), Heine
patent: 5177458 (1993-01-01), Newell et al.
patent: 5225799 (1993-07-01), West et al.

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