Объектом исследования является дискретный фазовращатель ДМВ диапазона. Цель работы - разработка фазовращателя с требуемыми в техническом задании параметрами. В процессе работы был рассчитан и смоделирован фазовращатель в среде проектирования «АWR Design Environment», разработана электрическая принципиальная схема и перечень элементов, создан макет устройства и проведены его измерения. Моделирование ФВ проводилось с применением методов электромагнитного анализа и использованием в качестве основных активных элементов их S-параметров и Spice-моделей. В результате проведенной работы был создан макет фазовращателя с требуемыми параметрами. Результаты работы будут применены при создании фазированной антенной решетки метеорологического радиолокатора. / The object of the research is a discrete phase shifter of the UHF range. The purpose of the work is to develop a phase shifter with the parameters required in the technical specification. In the process of work, the phase shifter was calculated and modeled in the AWR Design Environment, an electrical schematic diagram and a list of elements were developed, a device model was created and its measurements were carried out. PV modeling was carried out using the methods of electromagnetic analysis and using their S-parameters and Spice-models as the main active elements. As a result of the work carried out, a prototype of a phase shifter with the required parameters was created. The results of the work will be used to create a phased array of a meteorological radar.

The goal of the following thesis is to transfer radar basic theory in a practical work using Texas Instrument’s mmWave radar series. The range of practical applications for FMCW radars has increased, for example in automotive sector. Understanding the basics of radar mathematics in a simplified way, as well as the transfer from theory to practical work is important for any engineer working on radar projects. Even if the theory is known, the way from a theory to a running system can be hard, facing several problems, because the reality is limited. In two experiments, data from the radar is collected while cars are crossing the observation area of the radar.The data is then used to count the number of vehicles passing the observation area and to estimate the movement of the objects in the field of view.

This work is focused on design of L band power amplifier. First, the design of the amplifier is substantiated by necessary theoretical basics of RF power amplifiers. Then, after comparsion of availible RF power amplifiers concepts, the doherty power amplifier is chosen as a suitable type. Design of the amplifier is focused on the linearity and efficiency. AWR design program is used for simulation of the amplifier. Amplifier is then realized and parameters are measured. Measured results are then discussed and evaluated. This work proposes design of the linear doherty amplifier for modern communications systems.

This master thesis report details the process of developing a simulation platform for radio transceivers with a focus on analog receiver front end system design. The platform was implemented in the National Instruments VSS environment for the company Ericsson AB.

The goal of this diploma's thesis is to create a design of a two stages amplifier working in a band reserved for the secondary surveillance radar at the frequency of 1090 MHz. Output power of the amplifier should be 20 W and efficiency should be as high as possible. Because of this the second stage is designed in class C. Contents of this diploma's thesis include a theoretical analysis, simulations of the amplifier parameters, comparison of the Ansys Designer and AWR Microwave Office simulation programs and design of both stages of the amplifier, followed by a comparison of the measured parameters with the simulations.

This master's thesis describes possibilities of Oracle Database 10g and 11g monitoring. It let the reader know about practical tools for monitoring and describes the database's internal catalogs preserving statistics and the information about running database instances within history. Next, it describes design of an Oracle database monitoring tool, describtion of its implementation and at the end its evaluation and comparison with other similar applications.