Directional coupler

Details Directional coupler Directional coupler

2007-08-06

2010-12-28

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S111000

Reexamination Certificate

active

07859361

ABSTRACT:
In a directional coupler with two coupled lines arranged in a flat chamber of an enclosed metal housing within the coupling region side-by-side in the longitudinal direction and at a spacing distance from one another, of which the ends are connected to connecting ports attached at the sides of the metal housing, these coupled lines include flat, sheet-metal strip conductors, which are arranged within the coupling region with their broad sides facing towards one another side-by-side at a spacing distance and held by several support elements made of insulating material in a cantilever manner at a spacing distance from the opposing internal walls of the flat metal-housing chamber within the latter. In this context, at least one strip conductor is curved relative to the opposing strip conductor in such a manner that the spacing distance of the strip conductors in coupling region increases starting from the beginning of the coupling region approximately exponentially up to the end of the coupling region. The width of the two strip conductors increases within the coupling region.

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International Search Report or PCT/EP2007/006936 dated October 24, 2007.

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