Broadband millimeter-wave planar antenna array with a waveguide and microstrip-feed network

Soon Soo Oh, John Heo, Dong Hyeon Kim, Jae Wook Lee, Myung Sun Song, Young Sik Kim

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


In this paper, we describe a fixed-beam broadband planar antenna array at millimeter-wave frequencies. The antenna is fed by waveguide-feed and microstrip-feed networks. In order to ensure fixed beams and a broad bandwidth, a subarray concept is introduced. For efficient coupling, a novel waveguide-to-slot transition consisting of a slot pair and a narrow conductive bar is proposed. Simulated and measured bandwidth is found to be more than 7.1% from 40.5-43.5 GHz. The main beam directions are broadside over all frequencies. The maximum measured antenna gain is 30.2 dBi at 42.0 GHz.

Original languageEnglish
Pages (from-to)283-287
Number of pages5
JournalMicrowave and Optical Technology Letters
Issue number4
Publication statusPublished - 2004 Aug 20


  • Antenna array
  • Millimeter-wave
  • Planar antenna
  • Waveguide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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