Sökning: "IF amplifier"
Visar resultat 1 - 5 av 37 avhandlingar innehållade orden IF amplifier.
1. Development of Cryogenic Low Noise 4-8 GHz HEMT Amplifier and its Advanced Characterization
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
2. High Voltage Insulation Diagnostics Utilizing HTS-SQUID Based Amplifiers
Sammanfattning : In the design and development of high voltage insulation systems, different diagnostic methods are often used for system characterization. It is therefore crucial to continuously improve existing methods and to develop new ones. LÄS MER
3. High-Temperature Radio Circuits in Silicon Carbide Bipolar Technology
Sammanfattning : High-temperature electronics find many niche applications in downhole drilling, aviation, automotive and future exploration of inner planets like Venus and Mercury. Past studies have shown the potential of silicon carbide (SiC) electronics for catering these extreme temperature applications. LÄS MER
4. Estimation of Inverse Models Applied to Power Amplifier Predistortion
Sammanfattning : Mathematical models are commonly used in technical applications to describe the behavior of a system. These models can be estimated from data, which is known as system identification. Usually the models are used to calculate the output for a given input, but in this thesis, the estimation of inverse models is investigated. LÄS MER
5. Design and Analysis of Highly Linear Integrated Wideband Amplifiers
Sammanfattning : This dissertation deals with techniques for designing integrated amplifiers with high linearity. Amplifiers with operating frequencies from Audio to RF have been built. An enhanced feedback configuration, capable of very low distortion, is presented. LÄS MER