A V-band beam-steering antenna on a thin-film substrate with a flip-chip interconnection

Sanghyo Lee, Sangsub Song, Youngmin Kim, Jangsoo Lee, Chang Yul Cheon, Kwang Seok Seo, Youngwoo Kwon

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


We propose a planar V-band beam-steering antenna based on a millimeter-wave (mm-wave) system-on-package technology using advanced thin-film technology on a silicon mother board. The thin-film substrate has the capability of integrated passive elements and flip-chip interconnection. Space-consuming components such as a microstrip Rotman lens and patch antennas are implemented on a low-loss, low-cost, and low-dielectric-constant material, benzocyclobutane. V-band monolithic microwave integrated circuits, a power amplifier, and a SP4T switch, are flip-chipped on the thin-film substrate while minimizing parasitic effects. The fabricated antenna module shows H-plane beam steering at four angles, ±6° and ±20°. The measured effective isotropic radiated power is in the range of 17.3-18 dBm. To our knowledge, this is the first demonstration of a planar mm-wave beam-steering antenna module on a thin-film substrate incorporating integrated terminating loads and flip-chip interconnections.

Original languageEnglish
Article number4469934
Pages (from-to)287-289
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number4
StatePublished - Apr 2008


  • Beam-steering
  • Flip-chip
  • Thin-film
  • V-band


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