Wideband Double Leaky Slot Lens Antennas in CMOS Technology at Submillimeter Wavelengths

Sven van Berkel, Eduard Satoshi Malotaux, Carmine De Martino, Marco Spirito, Daniele Cavallo, Andrea Neto, Nuria Llombart

Research output: Contribution to journalArticleScientificpeer-review

21 Citations (Scopus)


The design and performance of two wideband double leaky slot lens antennas, suitable for integration in commercial CMOS technologies, are presented in this article. It is shown that antennas that are of leaky-wave nature are extremely suitable for CMOS integration as the impact of the metal density rules is minimized while simultaneously a dielectric lens can be efficiently illuminated. One antenna, operating over an ultrawide bandwidth from 200 to 600 GHz with a state-of-the-art simulated average efficiency of 57%, is suitable for center-fed direct detection scenarios. As a means of antenna performance verification, a coplanar waveguide (CPW)-fed antenna, which operates from 250 to 500 GHz with an average efficiency of 47%, is designed, fabricated, and characterized. This antenna, which potentially could be interfaced to other on-chip active elements, is fabricated and characterized in terms of S -parameters and gain patterns with excellent agreement with simulation, thanks to the use of an ad hoc quasi-optical measurement setup.
Original languageEnglish
Article number9131807
Pages (from-to)540-553
Number of pages14
JournalIEEE Transactions on Terahertz Science and Technology
Issue number5
Publication statusPublished - Sept 2020


  • CMOS antennas
  • THz imaging
  • direct detection
  • double slot
  • leaky lenses
  • leaky wave
  • millimeter waves
  • on-chip antennas
  • submillimeter waves
  • terahertz (THz)
  • ultrawideband


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