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Article Dans Une Revue IEEE Transactions on Terahertz Science and Technology Année : 2014

2.7 THz Balanced Waveguide HEB Mixer

Résumé

We report on the development of a waveguide-based balanced superconducting mixer for operation near 2.7 THz. The mixer employs a pair of NbN hot-electron bolometers defined on 6 mum-thick silicon substrate that follows a 90° hybrid coupler. To produce the critical structures of the coupler and waveguide embedding circuit, we have utilized silicon micromachining techniques based on deep reactive ion etching. Operating near 4.2 K bath temperature, we have measured a minimum uncorrected DSB receiver noise temperature of less than 2000 K using Callen-Welton formula and local oscillator sideband noise rejection better than 13 3 dB at 2.74 THz. The concept is suitable for building arrays, readily scalable for higher frequencies up 5 THz, and could accommodate other mixer technologies, such as room-temperature Schottky diode mixers.
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Dates et versions

hal-03801411 , version 1 (06-10-2022)

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Faouzi Boussaha, Jonathan Kawamura, Jeffery Stern, Cecile Jung-Kubiak. 2.7 THz Balanced Waveguide HEB Mixer. IEEE Transactions on Terahertz Science and Technology, 2014, 4, pp.545-551. ⟨10.1109/TTHZ.2014.2342507⟩. ⟨hal-03801411⟩
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