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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Decoupling Method Between Digital Signals on FPCB and Mobile Handset Antenna

  • Kim, Joon-Chul (Department of Electronics and Computer Engineering, Hanyang University) ;
  • Kim, Hyeong-Dong (Department of Electronics and Computer Engineering, Hanyang University)
  • Received : 2010.07.19
  • Accepted : 2010.09.10
  • Published : 2011.02.28
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Abstract

Digital harmonics, which may reduce the radio frequency sensitivity of a system, can be coupled with an antenna in a mobile handset. This letter presents a decoupling method for increasing the isolation between digital harmonics on a flexible printed circuit board (FPCB) and an antenna in terms of the ground mode current and the concept of reaction. We model the signal and ground lines in an FPCB as a loop circuit exciting a ground mode current and demonstrate a simple but efficient decoupling method for reducing the excited ground mode current.

Keywords

References

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