Search for dissertations about: "cryogenic measurements"
Showing result 1 - 5 of 37 swedish dissertations containing the words cryogenic measurements.
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1. TRL-calibration procedure using SP4T-switches
Abstract : .... READ MORE
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2. InAs/AlSb HEMTs for Cryogenic Low-Noise Applications
Abstract : The InAs/AlSb high electron mobility transistor (HEMT) is an emerging microwave device technology. The high electron mobility and high peak electron velocity of the InAs channel makes this device technology a potential candidate for low-noise applications operating at very low power dissipation. READ MORE
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3. Cryogenic Ultra-Low Noise InP High Electron Mobility Transistors
Abstract : 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. READ MORE
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4. InP High Electron Mobility Transistor Design for Cryogenic Low Noise Amplifiers
Abstract : The InGaAs/InAlAs/InP high electron mobility transistor (InP HEMT) is the superior technology for the most demanding low-noise and high-speed microwave and millimeter-wave applications, in particular in radio astronomy and deep-space communication. InP HEMT has enabled cryogenic low noise amplifier (LNA) designs with noise temperatures about ten times the quantum noise limit from sub GHz up to 120 GHz. READ MORE
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5. THz Vector Beam Measurement System for APEX Instrument SHeFI and Microwave Cryogenic Low Noise Amplifier Design
Abstract : This licentiate thesis describes results of the author’s work on development of THz vector beam measurement system and microwave cryogenic low-noise amplifier.The first part, and the main focus, of the thesis covers the vector beam measurement system for frequency range 210-500 GHz developed to characterize/verify the cold opticsof the APEX instrument SHeFI. READ MORE