Microwave Engineering — Winter 2023

Define Microwave frequencies. Enlist various frequency bands of microwave signals.

Briefly discuss TEM, TE and TM Modes for microwave transmission.

Sketch a Rectangular Waveguide and a Circular Waveguide and compare their dominant modes. Also, provide advantages and disadvantages associated with each waveguide types.

Discuss in brief applications of microwave.

Define:

Characteristic Impedance (ii) VSWR (iii) Reflection coefficient (iv) Transmission coefficient

Why Scattering parameters are used for higher frequencies? Discuss the properties of Sparameters of microwave devices in brief.

Draw equivalent circuit of transmission line and derive basic equations for voltage and current on transmission line.

Write a brief note on parallel strip lines.

What is standing wave? Derive the equation of voltage standing wave ratio (VSWR) in terms of reflection coefficient.

Explain in detail Magic Tee with its applications.

Define the following:

Group Velocity (ii) Phase Velocity (iii) Return Loss

Explain the role of spectrum analyzer in microwave measurements.

Define Klystron. Write short notes Two Cavity Klystron.

Briefly explain the working of an Isolator.

Write a short note on any one Power measurement method at microwave frequency.

Explain in detail working of Gunn diode.

Briefly explain electromagnetic interference.

Write a short note on effects of microwave on Human body.

Explain briefly different methods of Impedance Measurement at microwave frequency.

What is Remote sensing? List various applications of Remote sensing.

Write a short note on any one Microwave Antenna.

Write notes on Medical and Civil application of microwave.

Discuss briefly Advantages of Microwaves.

Write a short note on Tunnel diode.

Write a short note on Radar Systems.