H-band Quartz-Silicon Leaky-Wave Lens with Air-Bridge Interconnect to GaAs Front-End

Maria Arias Campo, Katarzyna Holc, Rainer Weber, Carmine De Martino, Marco Spirito, Arnulf Leuther, Simona Bruni, Nuria Llombart

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)
64 Downloads (Pure)


Thanks to the large bandwidth availability, millimeter and sub-millimeter wave systems are getting more attractive to be used in a wide range of applications, such as high-resolution radar or high-speed communications. In this contribution, a new lens antenna in-package solution is presented for the H-band (220320 GHz), including a wideband quartz-cavity leaky-wave feed combined with an air-bridge chip interconnect technology, based on spray coating and laser lithography. This interconnection acts as a wideband, low-loss transition between the GaAs front-end and the quartz antenna, avoiding the use of expensive waveguide split-blocks. An antenna prototype including the interconnect has been manufactured and characterized, validating the full-wave simulated results for the integrated H-band leaky-wave with aperture efficiency higher than 74% over 34% bandwidth, and radiation efficiency higher than 70% over 37% of bandwidth.

Original languageEnglish
Article number9316262
Pages (from-to)297-309
Number of pages13
JournalIEEE Transactions on Terahertz Science and Technology
Issue number3
Publication statusPublished - 2021

Bibliographical note

Accepted author manuscript


  • air-bridge chip interconnect
  • antenna-in-package
  • H-band
  • leaky-wave antenna
  • lens antenna
  • mm-wave
  • off-chip antenna


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