Sökning: "Y-factor measurement"

Hittade 2 avhandlingar innehållade orden Y-factor measurement.

1. 1. Small-signal, large-signal and noise modelling of HEMTs

   Författare :Mikael Garcia; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; small-signal equivalent circuit; direct extraction; L-network; MMIC_lib; noise model; TRL-calibration; -nerwork; ninlinear model; HEMT; HFET; Y-factor measurement; #928; coldFET measurement; method; power-spectrum measurement;

   Sammanfattning : .... LÄS MER

3. 2. Development of Cryogenic Low Noise 4-8 GHz HEMT Amplifier and its Advanced Characterization

   Författare :Erik Sundin; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shot-noise; low noise amplifier; cryogenic amplifier; sis; noise measurement; HEMT;

   Sammanfattning : In most radio astronomy instrumentation, cryogenic low noise amplifiers (LNA) are used as intermediate frequency (IF) amplifiers. The system noise temperature is among the most important parameters of a receiver and requires state of the art components. LÄS MER