4-12-and 25-34-GHz cryogenic mHEMT MMIC low-noise amplifiers
In this paper, monolithic microwave integrated circuit (MMIC) broadband low-noise amplifiers (LNAs) for cryogenic applications based on a 100-nm metamorphic high-electron mobility transistor (mHEMT) technology in combination with grounded coplanar waveguide are reported. A three-stage LNA, operating...
| Autores: | , , , , , , , , , , , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2012 |
| País: | España |
| Recursos: | Universidad de Cantabria (UC) |
| Repositorio: | UCrea Repositorio Abierto de la Universidad de Cantabria |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unican.es:10902/38419 |
| Acesso em linha: | https://hdl.handle.net/10902/38419 |
| Access Level: | acceso abierto |
| Palavra-chave: | Cryogenic low-noise amplifier (LNA) Metamorphic high electron-mobility transistor (mHEMT) Monolithic microwave integrated circuit (MMIC) |
| Resumo: | In this paper, monolithic microwave integrated circuit (MMIC) broadband low-noise amplifiers (LNAs) for cryogenic applications based on a 100-nm metamorphic high-electron mobility transistor (mHEMT) technology in combination with grounded coplanar waveguide are reported. A three-stage LNA, operating in 4-12 GHz and cooled to 15 K exhibits an associated gain of 31.5 dB ± 1.8 dB and average noise temperature of 5.3 K (NF=0.079 dB) with a low power dissipation of 8 mW. Additionally another three-stage LNA 25-34 GHz cooled to 15 K has demonstrated a flat gain of 24.2 dB ± 0.4 dB with 15.2 K (NF=0.22 dB), average noise temperature, with a very low power dissipation of 2.8 mW on chip. The mHEMT-based LNA MMICs have demonstrated excellent noise characteristics at cryogenic temperatures for their use in radio-astronomy applications. |
|---|