A 12-Gb/s non-contact interface with coupled transmission lines

Tsutomu Takeya, Lan Nan, Shinya Nakano, Noriyuki Miura, Hiroki Ishikuro, Tadahiro Kuroda

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


This paper presents a high data rate, non-contact interface using a coupled transmission line (CTL) composed of two differential transmission lines. The proposed CTL can achieve a measured loss of-13.4 dB and a 3-db bandwidth of 3.4-9.0 GHz as a non-contact channel for a 1-mm communication distance. This wideband characteristic makes it possible to achieve high-speed communication using a single channel. The hysteresis buffer-based receiver recovers the transmitted data from the distorted waveforms derived from the AC coupling characteristics of the channel. The interference from the power delivery coil to the CTL is also evaluated. The simulated results showed that the interference was less than-57.8 dB at 13.56 MHz. The system could achieve a communication speed of 12 Gb/s with a BER < 10-12 at a communication distance of 1 mm both with and without a wireless power supply of 75 mArms. The timing margin with the wireless power supply was 41 ps (=0.49 UI).

Original languageEnglish
Article number6466437
Pages (from-to)790-800
Number of pages11
JournalIEEE Journal of Solid-State Circuits
Issue number3
Publication statusPublished - 2013


  • Coupled transmission line
  • flexible printed circuit (FPC)
  • impedance matching
  • non-contact interface
  • power delivery
  • serial links

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'A 12-Gb/s non-contact interface with coupled transmission lines'. Together they form a unique fingerprint.

Cite this