Electromagnetic filter assemblies

Details Electromagnetic filter assemblies Electromagnetic filter assemblies

2006-06-06

2006-06-06

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S212000

Reexamination Certificate

active

07057482

ABSTRACT:
An electromagnetic filter assembly includes complimentary first and second blocks (1) and (2) defining two conjoined sections (10), (11) of an electromagnetic waveguide duct. A shim-like electromagnetic filter element (3) is held between the blocks and contains a series of holes (14) defining bridges (15) which traverse the waveguide duct to form poles of an electromagnetic filter. The filter element includes integral tuning projections (20) which extend into waveguide duct between the bridges. By adjusting the position of the filter element (3) between the blocks (1), (2) it is possible to vary the extent to which the tuning projections (20) project into the waveguide duct. The arrangement thus facilitates the repeated, continuous adjustment and variation of the electrical characteristics of devices such as filters, diplexers and multiplexers.

REFERENCES:
patent: 4028650 (1977-06-01), Konishi et al.
patent: 4800349 (1989-01-01), Gurcan et al.
patent: 6392508 (2002-05-01), Damphousse et al.

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