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

Antti Eino Ilmari Lamminen, Sabin Kumar Karki, Aki Karttunen, Mikko Kaunisto, Jussi Saily, Manu Lahdes, Juha Ala-Laurinaho, Ville Viikari

    Research output: Contribution to journalArticleScientificpeer-review

    24 Citations (Scopus)


    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 1x16 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
    Article number8454298
    Pages (from-to)1871-1875
    Number of pages5
    JournalIEEE Antennas and Wireless Propagation Letters
    Issue number10
    Publication statusPublished - 3 Oct 2018
    MoE publication typeNot Eligible


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


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