Integrated CNT Aerogel Absorbers for Sub-THz Waveguide Systems

Piotr A. Drozdz, James Campion, Nikolaos Xenidis, Akelsandra Krajewska, Aleksandra Przewloka, Serguei Smirnov, MacIej Haras, Albert Nasibulin, Dmitri Lioubtchenko

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


The ongoing development of sub-THz systems and applications has created a need for new absorbing materials which can be integrated in a simple, low-cost manner. Here, we investigate the properties of CNT-based aerogels in the range of 67-110 GHz and develop a simple technique for their integration. The aerogels are synthesised using standard techniques and then shaped using a laser cutter to allow for direct integration. The S-parameters of a total of four aerogel absorber samples are measured. The absorbers offer a return loss of up to 12 - 14.5 dB across the measurement band, with a maximum absorption of 5 dB/mm. The observed performance makes CNT aerogels extremely promising candidates for use in sub-THz waveguide systems and applications.

Original languageEnglish
Title of host publication2022 IEEE/MTT-S International Microwave Symposium, IMS 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9781665496131
Publication statusPublished - 2022
Externally publishedYes
Event2022 IEEE/MTT-S International Microwave Symposium, IMS 2022 - Denver, United States
Duration: 19 Jun 202224 Jun 2022

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X


Conference2022 IEEE/MTT-S International Microwave Symposium, IMS 2022
Country/TerritoryUnited States


  • absorber
  • carbon nanotubes
  • integrated
  • sub-THz
  • W - band
  • waveguide


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