A terahertz focal plane array using HEB superconducting mixers and MMIC IF amplifiers
| Autor: | Eyal Gerecht, K. S. Yngvesson, Niklas Wadefalk, Jerry Waldman, J. Nicholson, Xin Zhao, Thomas M. Goyette, Dazhen Gu, Fernando Rodriguez-Morales |
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| Rok vydání: | 2005 |
| Předmět: |
Heterodyne
Physics Noise temperature business.industry Terahertz radiation Amplifier Bolometer Astrophysics::Instrumentation and Methods for Astrophysics Physics::Optics Integrated circuit Condensed Matter Physics law.invention Optics law Heterodyne detection Electrical and Electronic Engineering business Monolithic microwave integrated circuit |
| Zdroj: | IEEE Microwave and Wireless Components Letters. 15:199-201 |
| ISSN: | 1531-1309 |
| DOI: | 10.1109/lmwc.2005.845688 |
| Popis: | We present a focal plane array (FPA) designed for operation at terahertz frequencies. The FPA is based on NbN phonon-cooled hot electron bolometer mixers directly coupled to wide-band microwave monolithic integrated circuit IF amplifiers. The array incorporates all the required dc-bias and IF circuitry in a compact split-block design. We present new experimental results describing the optical coupling efficiency to the array, as well as receiver noise temperature measurements. The measurements were performed at 1.6 THz, showing good agreement with theoretical predictions. This is the first low-noise heterodyne focal plane array to be reported for any frequency above 1 THz. |
| Databáze: | OpenAIRE |
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