Directional coupler and wireless communication device

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United States of America Patent

PATENT NO 9178264
APP PUB NO 20150180112A1
SERIAL NO

14638803

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A directional coupler according to the present invention includes a primary line for transmitting a transmission signal; an input port for inputting the transmission signal to the primary line; an output port for outputting the transmission signal from the primary line; a secondary line for electromagnetically coupling with the primary line to extract part of the transmission signal; a coupling port provided at one end of the secondary line; an isolation port provided at the other end of the secondary line; and a low pass filter unit having a function of low pass filter, disposed between the secondary line and the coupling port.

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Patent Owner(s)

  • TDK CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujiwara, Toshiyasu Tokyo, JP 12 119
Kuwajima, Hajime Tokyo, JP 35 279
Ohyama, Naoto Tokyo, JP 4 43
Sasaki, Masami Tokyo, JP 21 410
Tsuya, Yoshikazu Tokyo, JP 5 25

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