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Microwave Engineering: Microwave Measurements
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Microwave Engineering: Microwave Measurements
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25 Questions

1. The current reflection coefficient of a line with voltage reflection coefficient of 0.65 is given by
2. Antennas having a constant pattern in the azimuthal plane are called _____________
3. The transmission coefficient is given by 0.65. Find the return loss of the wave.
4. The power transmitted by a wave with incident power of 16 units is(Given that the reflection coefficient is 0.5)
5. A slotted line can be used to measure _____ and the distance of _____________ from the load.
6. A modern device that replaces a slotted line is:
7. _________ of an antenna is a plot of the magnitude of the far field strength versus position around the antenna.
8. If SWR=1.5 with a wavelength of 4 cm and the distance between load and first minima is 1.48cm, then the reflection coefficient is:
9. Find the standing wave ratio, when a load impedance of 250 ohm is connected to a 75 ohm line.
10. The attenuation is given by 20 units. Find the power loss in decibels.
11. Given that the reflection coefficient is 0.6. Find the SWR.
12. The minimum impedance of a transmission line 75 ohm with a standing wave ratio of 4 is
13. The input impedance of a quarter wave line 50 ohm and load impedance of 20 ohm is
14. The range of the standing wave ratio is
15. Slotted line is a transmission line configuration that allows the sampling of:
16. The power of a wave of with voltage of 140V and a characteristic impedance of 50 ohm is
17. Identify the material which is not present in a transmission line setup.
18. Standing wave ratio is defined as the
19. Antennas are bidirectional devices.
20. Beamwidth and directivity are both measures of the focusing ability of an antenna.
21. If the characteristic impedance of a transmission line 50 Ω and reflection coefficient is 0.0126+j0.1996, then load impedance is:
22. Find the reflection coefficient of the wave with SWR of 3.5.
23. For a matched line, the input impedance will be equal to
24. The reflection coefficient lies in the range of
25. The power of the transmitter with a radiation resistance of 12 ohm and an antenna current of 3.5A is

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