Device for sealing electric waves

Details Device for sealing electric waves Device for sealing electric waves

H - Electricity

05

B

333/104, 327/2.3

H05B 6/76 (2006.01) F24C 7/02 (2006.01) F24C 15/02 (2006.01) H05K 9/00 (2006.01)

Patent

CA 1213001

ABSTRACT In an apparatus which produces high frequency electromagnetic waves, a choke portion is provided in a leakage transmission path, which choke portion comprises a groove wall (29) corresponding to a grounded conductor, a number of strip conductors (30) arranged with a line width a and a pitch p, and a groove bottom (30), so as to minimize leakage prepagation in the longitudinal direction of the groove. Further, this choke portion is designed so that the characteristic impedance of its portion is changed in a region shorter than .lambda./4 of the frequency to be used. As a result, the depth and width of the groove can also be made less than .lambda./4.

435220

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