In this thesis, an electromechanical design of a knee orthosis in which a custom designed magnetorheological (MR) cylinder is used as a damper is presented. Subsequently, gait phase detection algorithm and related control ...

Mixers have a critical importance on designing receiver and transmitter structures. Mixers are one of the most important elements that determine system performance in radar and electronic warfare. For this reason, the ...

An important factor that is common in the marine and ocean environments and creates some standard rule violation for electromagnetic wave propagation is the evaporation ducts. The purpose of this thesis is to develop ...

In long range short wave (SW) communications, the transmitted signal passes through the ionosphere. Ionosphere approximately covers the area between about 80 kms and 1100 kms above the earth’s surface and it is mostly ...

Autopilot and flight control systems have an extremely important place in today’s aviation and defense technologies. To be able to accomplish long and successful missions with aircrafts, decreasing or even eliminating ...

In this thesis, an image-based attitude determination system, which determines the attitude of a satellite on three axes with images of the Earth and the Sun by using one or two cameras in the satellite body and a ...

Due to the increasing need for data rate and the limit of bandwidth in communication systems, nowadays, usage of high order modulation types has become essential. Communication systems, ever increasing long distance ...

A large number of available omnidirectional antennas are narrow band which causes difficulties such as the use of multiple antennas for different frequency bands. The widespread use of omnidirectional antennas in different ...

Reduction of Radar Cross Section (RCS) of objects, such as airplanes and ships, is an important issue in radar and electronic warfare applications. RCS reduction can effectively be achieved by using the coordinate ...

In the recent years, development of wireless communication devices lead to high demand of wireless communication system traffic and this demand is steadily rising day by day. At the same time, energy consumption problem ...