Ultrathin silicon micropackaging for RF MEMS devices

Yong Kook Kim, Yun Kwon Park, Jai Kyeong Kim, Soo Won Kim, Byeong Kwon Ju

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In this paper we report a technology for lightweight, small radio-frequency (rf) microelectromechanical system packaging with a short electrical path length. We used an ultrathin silicon substrate as the packaging substrate. Via holes for vertical feed-through were fabricated on the thin silicon wafer. Then, bottom-up gold electroplating was applied to fill via holes. For hermetic sealing, gold-gold direct metal bonding was used in the sealing line. The packaged rf device has a reflection loss below -22 dB and an insertion loss of -0.05 to -0.08 dB. Therefore, with the ultrathin silicon wafer, a lightweight, small device package can be constructed.

Original languageEnglish
Pages (from-to)G44-G48
JournalElectrochemical and Solid-State Letters
Issue number2
Publication statusPublished - 2006

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Materials Science
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering


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