Patent ID: 7884683
Filing Date: 2011-02-08
Classification: H01P

Abstract:
1. A directional coupler comprising: a first connection to input or output a wave and a first decoupling connection to decouple a coupled wave, both of said first connection and said first decoupling connection being connected via a first resistance network to an inner conductor and an outer conductor of a coaxial line at a first connection face; and a second connection to input or output said input or output wave from said first connection and a second decoupling connection to decouple a coupled wave, both of said second connection and said second decoupling connection connected via a second resistance network to said inner conductor and to said outer conductor of said coaxial line at a second connection face; wherein, said coaxial line is bent in such a manner that said first connection face and said second connection face are aligned generally parallel to a generally planar printed circuit board; said circuit board including at least one of said first connection, said second connection, said first decoupling connection, or second decoupling connection; wherein, said outer conductor of said coaxial line is led to earth potential at said first connection face via a third resistance network and at said second connection face by a fourth resistance network; and wherein, resistors forming said first, second, third and fourth resistance networks are components soldered onto said circuit board in SMD technology.