Cryogenic LNAs for SKA band 2 to 5
| Autor: | Giuseppe Moschetti, G. Alestig, J. Halonen, Jan Grahn, Joel Schleeh, Niklas Wadefalk, Arsalan Pourkabirian, Eunjung Cha, Bengt Nilsson, Per-Åke Nilsson |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science business.industry Electrical engineering 020206 networking & telecommunications 02 engineering and technology 01 natural sciences Noise (electronics) Low-noise amplifier 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Return loss Optoelectronics business Monolithic microwave integrated circuit |
| Zdroj: | 2017 IEEE MTT-S International Microwave Symposium (IMS). |
| Popis: | Four ultra-low noise cryogenic MMIC LNAs suitable for the Square Kilometer Array (SKA) band 2 to 5 (0.95–13.8 GHz) have been designed, fabricated, packaged and tested. The LNAs are based on 4×50, 8×50 and 16×50 μm HEMTs, designed for stable cryogenic operation, allowing the combination of good noise performance and return loss. The lowest noise temperatures measured in the four bands were 1.0 K, 1.2 K, 1.6 K and 2.6 K, respectively. |
| Databáze: | OpenAIRE |
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