11 uppsatser
A feasibility study
… with high voltage swing. It is also needed for the receivers to have low power consumption since they are close to the load, which is sensitive to heat. Different amplifier architectures were investigated to find a suitable circuit for the given prerequisites. In this report the …
… The purpose with this thesis is to design a compact amplifier with high power to function together with the DSP-card and build a unit that can replace several other guitar amplifiers. The advantages with that kind of solution could be that it would be cheaper, easier to carry …
Bredbandig drivförstärkare med hög verkningsgrad
… for the amplifier were a high efficiency and to deliver a predefined output power. To reach the second goal an additional preamplifier had to be constructed. The amplifiers were constructed in three steps: Design and Layout in the software Microwave Office, Mounting components …
The power system modelled in this thesis work has been developed for simulationwhen e.g. the production in some part of the power system is changed. The powersystem has been modelled according to the swing mass of the system, the frequencydependency of the load and the turbine …
The purpose with the report is to show that it is possible to design a class-D amplifier, using a programmable FPGA mounted on a developing card from Xess and a H-bridge. The FPGA was programmed in VHDL which is the language the software from Xilinx use to implement a logical …
… between two antennas in a MIMO system affects the linearity of the power amplifiers powering the antennas. For the MIMO system, two power amplifiers and twoantennas were constructed and designed using the software ADS and a software defined radio was constructed using the …
… circuit performance. This tool has been tested on three different circuits, a power-amplifier, a Nested Miller Compensated amplifier with an active feedback (Active Nested Miller Compensation) and a Nested Miller Compensated amplifier without an active feedback (Nested Miller …
… report deals with the theoretical aspects of preamplifiers, crossovers and power amplifiers as well as power supply and control. The section about design accounts for the layout of the system and simulation results show how the system should work. The section regarding …
… hang the headphones after usage. When doing this you can ensure to always have power left in the headphones. The project resulted in a working prototype of the headphones showing the thought of the project. We have also made models of the charging stand and charging list.
… parallel strain gauges and pairs of perpendicular strain gauges, were tested. Power and logging of data was supplied through an Inertial Measurement Unit. The rein tension meters were calibrated by lifting known weights and were tested at local riding schools as well as with …
… In particular, it addresses predistortion, realized in the digital domain, of power amplifiers, modeled in the analog domain. The former is implemented in Matlab while the latter is implemented in ADS. Two versions of integrating the two systems have been tested: 1) Iterative …
