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Shielding Methods for Gigahertz-Frequency Wideband Analog-Integrated Circuits
IEEE Transactions on Electromagnetic Compatibility
  • Benjamin Conley
  • Paul Henny
  • Nicholas Erickson
  • Matthew S. Halligan
  • Benjamin Toby
  • David Pommerenke, Missouri University of Science and Technology
  • Mark Walker
  • Chad Robert Essary
  • Paul Dixon
  • Daryl G. Beetner, Missouri University of Science and Technology
Coupling between closely spaced wideband analog radio frequency integrated circuits can cause degradation in device performance. Methods for reducing the coupling between packages were tested, with a strong focus on maintaining manufacturability and minimizing any increase in coupling between structures within the package. Methods include the application of magnetic absorbing material or resistive sheets to the package surface and the inclusion of conductive vias in the package walls. Package modifications were tested from 5-40 GHz through both full-wave simulation and physical measurement. The best tradeoff in performance and manufacturability below 20 GHz was found using 250-Ω/sq. resistive sheets connected to the return plane with vias in the package corners, while above 20 GHz, the best tradeoff was found by covering the package with magnetic absorbing materials. The magnetic absorbing material can be embedded directly in the package polymer itself, allowing easy manufacture.
Electrical and Computer Engineering
Research Center/Lab(s)
Electromagnetic Compatibility (EMC) Laboratory
Keywords and Phrases
  • Conductive films,
  • Electromagnetic coupling,
  • Electromagnetic shielding,
  • Ferrite,
  • Liquid crystal polymers,
  • Liquid crystals,
  • Magnetism,
  • Packaging,
  • Reconfigurable hardware,
  • Shielding,
  • Absorbing materials,
  • Analog radio,
  • Device performance,
  • Full-wave simulations,
  • Gigahertz frequencies,
  • Manufacturability,
  • Physical measurement,
  • Resistive sheets,
  • Analog integrated circuits
Document Type
Article - Journal
Document Version
File Type
© 2016 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
Citation Information
Benjamin Conley, Paul Henny, Nicholas Erickson, Matthew S. Halligan, et al.. "Shielding Methods for Gigahertz-Frequency Wideband Analog-Integrated Circuits" IEEE Transactions on Electromagnetic Compatibility Vol. 58 Iss. 4 (2016) p. 1042 - 1051 ISSN: 0018-9375
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