公开(公告)号：US09762294B2

公开(公告)日：2017-09-12

申请号：US14431216

申请日：2013-08-02

Applicant: DENSO CORPORATION

Inventor： Takashi Saitou ,  Akira Takaoka ,  Koji Ito ,  Koichi Ito

IPC: H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H04B5/00 ,  H01Q7/00 ,  H04B3/56 ,  H01Q1/46 ,  H02J5/00

CPC classification number: H04B5/0037 ,  H01Q1/46 ,  H01Q7/00 ,  H02J5/005 ,  H02J7/025 ,  H02J50/12 ,  H02J50/40 ,  H04B3/56

Abstract: The communication system includes a first communication device, a second communication device, and a third communication device. The first communication device outputs a high frequency alternating current power, and a power receiving circuit of the second communication device receives the high frequency alternating current power via a second antenna. A power line is connected between the second antenna and the power receiving circuit. A first power line has a first semicircle portion and a second power line has a second semicircle portion. The first and second semicircle portions are combined together to provide a loop-shaped antenna. The third communication device receives the high frequency alternating current power output from the loop-shaped antenna. At least two of the first, second, or third communication devices transmit or receive communication signals using respective antennas. The first and second power lines are twisted with each other at a portion other than the loop-shaped antenna.