Directional coupler

US7859361B2 · kind B2 · utility

Assignee

• Rohde & Schwarz GmbH & Co. KG · DE

Inventors

• Christian Evers · Tauberbischofsheim, DE
• Ralf Juenemann · Munich, DE
• Alexander Bayer · Niedernberg, DE
• Markus Leipold · Isen, DE

Key dates

• Filing date: Aug 6, 2007
• Grant date: Dec 28, 2010
• Expiry date: Dec 12, 2027

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01P5/184
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

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.