Microwave Communication Questions

• As frequency is increased, the skin effect
• At millimeter wavelength the favoured mode in circular wave guide is
• In a TWT the phase velocity of the axial component of the field on the slow wave structure is kept
• Microwaves
• Performance of a PIN diode switch is represented by
• The manufacturing technique used to manufacture strip type transmission line is
• In microstrip line has dielectric material most commonly used is
• In the given figure power meters at A and B indicate 1 mW and 110 μW respectively. VSWR of line is
• The earliest uses of electromagnetic waves were
• An electromagnetic wave can be completely guided by a dielectric rod or slab.
• In fibre optics the use is made of thin glass fibres for efficient transmission of light.
• Klystron amplifier is not used to amplifier very weak microwave signals due to
• Which of the following modes in circular waveguides are circularly symmetric?
• The electrical requirement on wall thickness of rectangular wave guide is
• Which mode is called dominant mode in rectangular wave guide?
• Radar reciever has high sensitivity and low noise figure
• Which of the following lines behaves as infinite line?
• Most electromagnetic transmission in rectangular wave-guide uses
• A line of characteristic impedance 400 Ω is terminated by a resistance of 400 Ω. The reflected quantities are
• VTM stands for voltage tunable magnetron.