Design of active shield circuit with automatic tuning scheme

Retdian Agung Nicodimus, Shigetaka Takagi

Research output: Contribution to journalArticlepeer-review


A feedforward-based active shielding technique for digital noise suppression is more preferred for its capability of reducing the noise on the entire area inside the guard ring. In order to compensate for the variation of substrate parameters, an automatic control scheme to tune the gain of the active shield circuit is proposed. Simulation results show the effectiveness of the proposed system in reducing the digital noise regardless of circuit layout. Simulation results also show that noise suppression improvement from passive guard ring to active shield with tuning is 20 dB or one tenth while that from active shield without tuning to active shield with tuning is 12 dB.

Original languageEnglish
Pages (from-to)1196-1202
Number of pages7
JournalIEICE Transactions on Electronics
Issue number6
Publication statusPublished - 2005 Jun
Externally publishedYes


  • Active noise cancellation
  • Active shield circuit
  • Digital noise
  • Mixed-signal integrated circuits
  • Substrate coupling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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