An integrated 11 GHz cryogenic downconverter
| Autor: | Neil McN. Alford, Paul Smith, Tim W. Button, S.J. Zammattio, N. Peters, R.B. Greed, B.F. Nicholson, J. Grier, P.R. Whitehead, K. Lamacraft, S.J. Hedges, D. Jedamzik, W.A. Phillips |
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| Rok vydání: | 1995 |
| Předmět: |
Superconductivity
Materials science High-temperature superconductivity Physics::Instrumentation and Detectors business.industry Local oscillator Bandwidth (signal processing) Astrophysics::Instrumentation and Methods for Astrophysics High-electron-mobility transistor Condensed Matter Physics Microstrip Electronic Optical and Magnetic Materials law.invention law Condensed Matter::Superconductivity Optoelectronics Electrical and Electronic Engineering business Microwave Diode |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 5:2283-2286 |
| ISSN: | 1051-8223 |
| Popis: | A cryogenic downconverter has been designed and built to demonstrate the integration of semiconducting and superconducting components in a complete subsystem cooled by a closed cycle Stirling cryocooler. The frequency selective receiver converts 11 GHz (X-band) signals to an IF of 1000 MHz using a high temperature superconducting (HTS) microstrip input filter with a 1% bandwidth, a silicon diode mixer and a local oscillator stabilized by means of a 10 GHz HTS cavity and driven by a GaAs HEMT. The components are packaged into a cryogenic unit cooled to 60 K. Details of the system integration are presented, together with microwave and thermal test results. > |
| Databáze: | OpenAIRE |
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