A plane-wave beam-steering lens design using microstrip switched-line phase shifters

H. J. Park, D. H. Lee, Moonil Kim, D. S. Eom, Y. K. Chang

Research output: Contribution to journalArticle

Abstract

A compact beam-steering lens design appropriate for millimeter-wave and submillimeter-wave applications is experimentally verified with an X-band test model. The lens achieves coupling to plane-wave beams through arrays of patch antennas placed on its two outer surfaces. The isolation between input and output antennas is accomplished by inserting a metal ground plane in the middle of the lens. The two closest patch antennas on the front and the backside are connected together with microstrip circuits that include switched-line phased shifters and interconnecting vias through the lens substrate. Three different X-band 100-element plane-wave microstrip lenses that use passive delay lines instead of actual phase-shifters were fabricated to successfully demonstrate the beam-steering angles of 20 and 40 degrees. From a separate waveguide measurement on the unit-cell element only, the insertion loss of the lens was estimated to be approximately 3.5 dB with bandwidth of 2% at 10 GHz.

Original languageEnglish
Pages (from-to)117-124
Number of pages8
JournalInternational Journal of Infrared and Millimeter Waves
Volume26
Issue number1
DOIs
Publication statusPublished - 2005 Jan 1

Keywords

  • Beam-steering lens
  • Patch antenna
  • Phase shifter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'A plane-wave beam-steering lens design using microstrip switched-line phase shifters'. Together they form a unique fingerprint.

  • Cite this