Beam-Switching Dual-Spherical Lens Antenna with Low Scan Loss at 71-76 GHz

Research output: Contribution to journalArticle


Research units

  • VTT Technical Research Centre of Finland


A millimeter wave communication system needs a directive beam-steering antenna with a low scan loss to compensate the high free space loss. In this work, an electronically beam-switching integrated lens antenna (ILA) system with low scan loss is designed for lower E-band (71-76 GHz). An ILA with hemispherical collimating surface of 26 mm radius and spherical feed surface of 37.5 mm radius is fabricated from Teflon material. A conformal 1×16 linear beam-switching feed array based on SP4T switches and Vivaldi antennas is designed. The maximum simulated and measured realized gain including the switch network losses is 21.8 dBi and 19.6 dBi, respectively. The measured scan loss of the ILA excluding the switch network loss is less than 1.3 dB in the lower E-band for beams within ±40°.


Original languageEnglish
Pages (from-to)1871 - 1875
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Issue number10
Early online date1 Sep 2018
Publication statusPublished - 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • beam steering, feed network, integrated lens antenna, millimeter wave technology, RF switches, Vivaldi antenna

ID: 27961512