Wave transmission lines and networks – Wave mode converters
Reexamination Certificate
2007-04-20
2008-09-02
Lee, Benny (Department: 2817)
Wave transmission lines and networks
Wave mode converters
C333S035000, C333S249000, C333S251000
Reexamination Certificate
active
07420434
ABSTRACT:
A compact circular waveguide system can connect circular waveguides through a bend while avoiding excessive interaction between the orthogonal modes of the circular waveguides. A compact bend system with circular waveguide input and output can be achieved by providing short quarter wave transformers. The quarter wave transformers can be positioned at the transitions between the circular waveguides and a single-mode quasi-rectangular waveguide segment. Within the single-mode quasi-rectangular waveguide segment, a bend can be formed without concern for mixing of the orthogonal modes of the circular guided wave. The undesired mode of propagation can be substantially reduced or eliminated within the quarter wave transformers with a resistive mode suppressor. The compact system can be machined out of a single block of material from the outside flange faces.
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PCT/US07/61511, International Search Report, Feb. 6, 2008, 1 page.
EMS Technologies Inc.
King & Spalding LLP
Lee Benny
LandOfFree
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