Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2008-12-05
2011-12-06
Pascal, Robert (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S135000, C333S137000, C333S207000, C333S209000
Reexamination Certificate
active
08072294
ABSTRACT:
The filter has a switch function of selectively transmitting a transmission signal through one of first and second branch waveguides branching from a primary waveguide. The filter includes resonators disposed in the first and second branch waveguides. The resonator includes a space formed inside a metal cover, a central conductor disposed inside the space, and a short-circuiting plate. The central conductor has one end grounded to an outer conductor. The short-circuiting plate allows the neighborhood of an open end of the central conductor to be selectively conducted to the outer conductor. The filter performs a selection from the first and second branch waveguides by switching electrical conductivity in a region between the neighborhood of the open end of the central conductor and the outer conductor.
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Hamada Tsuyoshi
Tanpo Hiroshi
Glenn Kimberly
NEC Corporation
NEC Engineering Ltd.
Pascal Robert
Young & Thompson
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