Lab experiment - microwave assignment Essay Example | Topics and Well Written Essays - 1750 words

Lab experiment - microwave assignment - Essay Example The source of the signal that the system uses is termed as the Gunn Oscillator, which is at a signal of 10.5 GHz. the maximum output power that is recommended for the frequency ranges between 20 Mw to 10 Mw, and the recommended range may vary from time to time in different Gunn Oscillators. The output power may as well be varied by varying the voltage supplied that is received by the Gunn Oscillator via the unit cable attached to it (Campanella 2010). The devise consists of an adjuster, which helps to regulate the level of the power at the microwave point of input and in making of the measurements of the attenuator. This assignment makes use of the side-vane attenuator that uses the fiberglasses that are plastic in nature having resistive coatings in order to achieve the required attenuation. The fiberglasses are erected vertically with respect to the wave-guide and to the short walls in a parallel manner. The position of the blades on the wave-guide dictates the resulting attenuation of the whole system. Each attenuator is calibrated separately due to differences in the attenuation characteristics. Wave-guide support is a system component that acts as a stand and helps in the system stability. The system supports are in parts, one of the supports is the system base while the other is the plastic piece that is attached to the rod end. Wave-guides can be connected to the support by placing it gently onto the plastic piece of the system located on the rod top. The height of the system support is adjustable with the help of setscrews located on the base of the system. For the sake of this assignment, cross-guide couplers were used which consist of two- waveguides that are joined to one another at an angle of 90 degrees. Signals of the microwave that propagates from waveguide couples with microwave signals and finally dictates the coupled signal propagation. Two openings are recommended on the walls. These openings should be