Design and Performance of a 600–720-GHz Sideband-Separating Receiver Using ${\hbox{AlO}}_{x}$ and AlN SIS Junctions
| Autor: | Wolfgang Wild, Jacob Kooi, C. F. J. Lodewijk, Ronald Hesper, F. P. Mena, T. M. Klapwijk, G. Gerlofsma, Andrey M. Baryshev, Tony Zijlstra |
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| Přispěvatelé: | Astronomy |
| Rok vydání: | 2011 |
| Předmět: |
Engineering
Noise temperature Radiation superconducting integrated devices Sideband business.industry Local oscillator Superheterodyne receiver superconducting microwave devices Condensed Matter Physics WAVE-GUIDE NOISE law.invention Optics Intermediate frequency law Power dividers and directional couplers MIXERS Hybrid coupler Electrical and Electronic Engineering business Compatible sideband transmission TRANSITION |
| Zdroj: | Ieee transactions on microwave theory and techniques, 59(1), 166-177 |
| ISSN: | 1557-9670 0018-9480 |
| DOI: | 10.1109/tmtt.2010.2090417 |
| Popis: | We present the design, modeling, construction, and characterization of a sideband separating heterodyne receiver that covers the frequency range from 600 to 720 GHz. The receiver has been constructed using waveguide technology in the split-block technique. The core of the mixer consists of a quadrature hybrid, two directional couplers to inject the local oscillator signal, two superconductor-insulator-superconductor (SIS) junctions, three signal-termination loads, and two planar IF/bandpass-filter/dc-bias circuits. The instrument that we have constructed presents excellent performance as demonstrated by two important figures of merit: receiver noise temperature and sideband ratio. Across the entire band, the uncorrected single-sideband noise temperature is below 500 K and reaches 190 K at the best operating point. The sideband ratio is greater than 10 dB over most of the frequency operating range. Superconducting junctions containing AlOx- and AlN-tunnel barriers were tested. |
| Databáze: | OpenAIRE |
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