Calculate the Ratio of Circular Waveguide Cross-Sectional Area - Management Assignment Help

Assignment Task:

Task:

1. Calculate the ratio of circular waveguide cross-sectional area to the rectangle waveguide cross-sectional area assuming that both these wave guide had equal cutoff frequency for the dominant mode, if P11 = .841.
2. Draw beam current waveform at a Klystron for the least four values of bunching parameters. Write an Expression for the bunching and specify each quality in the expression.
3. Compare O-and M-type tubes. Write your answer in the tabular form.
4. Specify the characteristic feature of INSAT-2E.
5. List out the satellite the subsystem, their function and their main characteristics. Write your answer in a tabular form.
6. A x-band rectangular waveguide filled with a dielectric (Er = 2.56) is operating at 9.5 GHz calculate group and phase velocities. Also calculate TE and TM wave impedances.

7. What is the purpose of tape in a waveguide? The peak value of a wave at the i/p of a transmission line with attenuation factor Equal to 0.01 N/m is 10 mV. What is the value of voltage 100 meters down the line?
8. A reflex Klystron is the amplitude modulated only. Describe with neat diagram and justification, the method of such modulation.
9. Perfect matching of all three port of a reciprocal, Loss-less 3 port junctions. Junction is impossible to achieve. Do you agree? Justify your comments.
10. Obtain the scattering matrix of a lossless transmission line with the propagation constant B(Bita) and length L.
11. What is the measured frequency on a waveguide slotted line if the distance between adjacent minima is 1.27 cm and the width dimensions of the waveguide is 2.286 cm?

12. Determine the internal noise power (Pn) of a microwave amplifier operating with a bandwidth of 500 MHz and a specified noise figure of 2.5 dB.

13. Explain the following parameters used to characterize a direction coupler:
(i) Coupling coefficient
(ii) Directivity
(iii) Isolation

What will be the value of directivity and isolation for an ideal directional couple?
An X-band directional couple has a coupling coefficient of 10 dB. What will be the output power in the main branch if the input power is 20 mW?

14. A reflex klystron generates at 9.375 GHz with a d.c beam current of 10mA and 3 mm spacing between the repellers and the resonator grid. Find the repleller voltage, maximum power output and electronics efficiency and the corresponding gap voltage. For the first 2 modes of operation.

15. The longitudinal modes of germanium arsenide inflection laser emitting at the wavelength of 0.87 are separated in frequency by 278 GHz. Determine the length of optical cavity and the number of longitudinal nodes emitted. The refractive index of germanium arsenide is 3.6

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