Abstract
In this contribution, we describe a reconfigurable surface, designed in 130um SiGe technology, to realize a fully-electronic, planar chopper aiming at passive terahertz imaging applications. This surface consists of subwavelength metallic patches that are interconnected using FET-based varactors. By switching the bias voltage of the varactors between 0V and 1.2V, the reconfigurable surface can switch between a transmissive and opaque state, respectively. The expected transmissivity is simulated to be between 0.2 and 0.9 over a wide frequency band, from 250 GHz to 550 GHz. This chopping solution would enable a high degree of system integration for future passive terahertz cameras.
| Original language | English |
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| Title of host publication | 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024 |
| Publisher | IEEE |
| Number of pages | 2 |
| ISBN (Electronic) | 9798350370324 |
| DOIs | |
| Publication status | Published - 2024 |
| Event | 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024 - Perth, Australia Duration: 1 Sept 2024 → 6 Sept 2024 |
Publication series
| Name | International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz |
|---|---|
| ISSN (Print) | 2162-2027 |
| ISSN (Electronic) | 2162-2035 |
Conference
| Conference | 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024 |
|---|---|
| Country/Territory | Australia |
| City | Perth |
| Period | 1/09/24 → 6/09/24 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- chopping
- modulator
- passive imaging
- reconfigurable surface
- SiGe
- terahertz