Sökning: "ground impedance"
Visar resultat 1 - 5 av 29 avhandlingar innehållade orden ground impedance.
1. Multifrequency IP-measurements and parametrization of ground impedance spectra
Sammanfattning : .... LÄS MER
2. Reconfigurable Impedance Matching Networks for Radio Receivers
Sammanfattning : Mobile phones become smaller but include more advanced functions for every new generation. This paradox is possible since reduced transistor size and increased integration of digital building blocks free space for new functions. LÄS MER
3. Prediction and Optimisation of Traffic Noise. A Study on Noise Barriers and Shielded Areas
Sammanfattning : The main contribution of noise levels in cities is today road traffic. The strongest source for all road vehicles is most often the tyre-road contact. This source position close to the ground is fortunate with respect to secondary noise abatement measures, such as absorbing road surfaces or noise barriers. LÄS MER
4. A study of the measurement of the acoustical ground impedance and its effects
Sammanfattning : .... LÄS MER
5. Analysis, Control, and Design Optimization of Engineering Mechanics Systems
Sammanfattning : This thesis considers applications of gradient-based optimization algorithms to the design and control of some mechanics systems. The material distribution approach to topology optimization is applied to design two different acoustic devices, a reactive muffler and an acoustic horn, and optimization is used to control a ball pitching robot. LÄS MER