Subthreshold VO₂ vertical switches for large-bandwidth millimeter-wave and sub-terahertz detection
- Resource Type
- Conference
- Authors
- Qaderi, Fatemeh; Horst, Yannik; Blatter, Tobias; Burla, Maurizio; Park, Daesung; Gilani, Ali; Leuthold, Juerg; Ionescu, Adrian M.
- Source
- 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) Infrared, Millimeter and Terahertz Waves (IRMMW-THz),2022 47th International Conference on. :1-2 Aug, 2022
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Signal Processing and Analysis
Radio frequency
Wireless communication
Wireless sensor networks
Voltage measurement
Millimeter wave devices
Waveguide components
Detectors
- Language
- ISSN
- 2162-2035
Non-linear impedance characteristics of VO 2 offer solutions to highly sensitive radio-frequency (RF), millimeter-wave (mm-wave), and terahertz (THz) detectors. We demonstrate high-speed broadband sensibility of miniaturized VO 2 switches by utilizing the nonlinearity close to the abrupt insulator-to-metal transition (IMT). We apply an intensity modulated sub-THz signal to the 2-terminal devices inside a coplanar waveguide (CPW) and detect the down-mixed component at the intermediate frequency (IF). The maximum output IF power selectivity over noise reaches 45 dB with a −3 dB bandwidth of 12 GHz. Its responsivity to sub-THz radiation and high-speed switching makes our design a potential detector for a wide range of high-data-rate wireless applications.