Sökning: "Joel Schleeh"

Hittade 2 avhandlingar innehållade orden Joel Schleeh.

1. 1. Cryogenic Ultra-Low Noise InP High Electron Mobility Transistors

   Författare :Joel Schleeh; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MMIC; LNA; cryogenic; low noise; DC power dissipation; ALD; GaAs MHEMT; gain fluctuations; InP HEMT;

   Sammanfattning : Indium phosphide high electron mobility transistors (InP HEMTs), are today the best transistors for cryogenic low noise amplifiers at microwave frequencies. Record noise temperatures below 2 K using InP HEMT equipped cryogenic low noise amplifiers (LNAs) were demonstrated already a decade ago. LÄS MER

3. 2. Ultra-Low Noise InP HEMTs for Cryogenic Amplification

   Författare :Joel Schleeh; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cryogenic; DC power dissipation; MMIC; LNA; InP HEMT; ALD;

   Sammanfattning : InGaAs/InAlAs/InP High Electron Mobility Transistors (InP HEMTs), are today the best devices to design cryogenic low noise amplifiers. However, reported progress in reducing the noise has been slow in the last decade. LÄS MER