94-GHz log-periodic antenna on GaAs substrate using air-bridge structure

Yong Hyun Baek, Le Huu Truong, Sun Woo Park, Sang Jin Lee, Yeon Sik Chae, Eung Ho Rhee, Hyun Chang Park, Jin Koo Rhee

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

We fabricated a compact, 94-GHz log-periodic planar antenna on GaAs substrate. We used millimeter-wave monolithic integrated circuit (MMIC) process technology to fabricate the on-chip antenna. An air-bridge crossover is used to replace the conventional bonded structure for crisscross connection, which is compatible with active devices and circuits. The fabricated antenna chip size is 1.2 × 2.6 mm2. Measurement results show that this antenna can operate from 87 to 99.5 GHz with its return loss better than -10 dB. At 94 GHz, the log-periodic antenna has a return loss of -11 dB and 4.8 dBi of gain.

Original languageEnglish
Pages (from-to)909-911
Number of pages3
JournalIEEE Antennas and Wireless Propagation Letters
Volume8
DOIs
StatePublished - 2009

Keywords

  • 94 GHz
  • Air-bridge
  • Crisscross connection
  • GaAs substrate
  • Log-periodic antenna (LPA)
  • W-band

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