Ridge-waveguide filter and filter bank

Details Ridge-waveguide filter and filter bank Ridge-waveguide filter and filter bank

2007-08-29

2010-02-16

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S208000, C333S212000, C333S248000

Reexamination Certificate

active

07663452

ABSTRACT:
A ridge-waveguide filter with a signal input port at a first end and a signal output port at a second end contains a cascade assembly of metal-bounded ridge-waveguide sections with interspersed metal-bounded evanescent-mode coupling regions, and also contains low-loss ridge-waveguide port coupling networks to impedance-match the ends of the assembly to respective signal-port reference impedances. A frequency multiplexer with a composite-signal port and a plurality of channeled-signal ports is composed of a plurality of ridge-waveguide filters that are series-connected through a ridge-waveguide manifold containing a multiplicity of three-way waveguide junctions and quasi-lumped waveguide elements.

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