Microwave Devices and Systems & Dominant Mode Rectangular Wave - Engineering Assignment Help

Assignment Task

Task

1. When the dominant mode is propagated in an air filled rectangular waveguide, the guide wavelength for a frequency of 9 GHz is 4 cm. Calculate breadth of the guide? 2. A rectangular waveguide with dimensions of a = 2 cm and b = 1 cm filled with deionised water operates at 3 GHz. Determine all the propagating modes and the corresponding cut-off frequencies. 3. An air filled circular waveguide is to be operated at a frequency of 6 GHz and is to have dimensions such that fc = 0.8f for TE11 mode. Determine the diameter of the waveguide and guide wavelength. 4. Calculate the ratio of circular waveguide cross sectional area to the rectangular waveguide cross section. Assuming that both these waveguides have similar or equal cut-off frequencies or wavelengths.(Assume suitable data) 5. A typical transmission line has a resistance of 8 ?/km, inductance of 2 mH/km, a capacitance of 0.002 µF/km and a conductance of 0.07 µS/km. Calculate characteristics impedance, attenuation constant, phase constant of the transmission line at a frequency of 2 KHz. If a signal of 2 volt is applied and the line terminated by its characteristics impedance. Calculate the power delivered to the load, if the line length is 500 km. 6. A 600 ? lossless transmission line is fed by a 50 ? generator. If the line is 200 metre long and terminated by load of 500 ?. Determine in dBs a) Reflection loss b) Transmission loss c) Return loss

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