Sorry, you need to enable JavaScript to visit this website.

  • 7:44 PM, Monday, 18 Oct 2021

Course Postgraduate
Semester Sem. I
Subject Code AVR612
Subject Title Microwave Circuits and Systems


Introduction to Wireless Systems: Classification of wireless systems; Design and performance issues: Choice of operating frequency, multiple access and duplexing, circuit switching versus packet switching, propagation, radiated power and safety; Cellular telephone systems and standards.

Noise and Distortion in Microwave Systems: Basic threshold detection, noise temperature and noise figure, noise figure of a lossy transmission line; Noise figure of cascade systems: Noise figure of passive networks, two-port networks, mismatched transmission lines and Wilkinson power dividers; Dynamic range and inter-modulation distortion.

Resonators: Principles of microwave resonators, loaded, unloaded and external Q, open and shorted TEM lines as resonators, microstrip resonators, dielectric resonators.

Power Dividers and Couplers: Scattering matrix of 3- and 4  port junctions;Design of  T junction and Wilkinson power dividers;design of 90 and 180-- hybrids.

Filters: Analysis of periodic structures, Floquet’s theorem, filter design by insertion loss method, maximally flat and Chebyshev designs.

Microwave Amplifier Design: Comparison of active devices such as BJT, MOSFET, MESFET, HEMT, and HBT; Circuit models for FETs and BJTs; Two-port power gains; Stability of transistor amplifier circuits; Amplifier design using S-parameters: Design for maximum gain, maximum stable gain, design for specified gain, low-noise amplifier design, design of class-A power amplifiers.

Mixers: Mixer characteristics: Image frequency, conversion loss, noise figure; Devices for mixers: p-n junctions, Schottky barrier diode, FETs; Diode mixers: Small-signal characteristics of diode, single-ended mixer, large-signal model, switching model; FET Mixers: Single-ended mixer, other FET mixers; Balanced mixers; Image reject mixers.

Switches: Devices for microwave switches: PIN diode, BJT, FET; Device models; Types of switches; Switch configurations; Basic theory of switches; Multi-port, broad-band and isolation switches.

Oscillators and Frequency Synthesizers: General analysis of RF oscillators, transistor oscillators, voltage-controlled oscillators, dielectric resonator oscillators, frequency synthesis methods, analysis of first and second order phase-locked loop, oscillator noise and its effect on receiver performance.

Text Books
  1. Pozar, D.M. “Microwave and RF Design of Wireless Systems”, John Wiley & Sons. 2001
  2. Gonzalez, G., “Microwave Transistor Amplifiers: Analysis and Design”, 2nd Ed., Prentice- Hall. 1997
  3. Bahl, I. and Bhartia, P., “Microwave Solid State Circuit Design”, 2nd Ed., John Wiley & Sons. 2003
  4. Chang, K., Bahl, I. and Nair, V., “RF and Microwave Circuit and Component Design for Wireless Systems”, Wiley Interscience. 2002
  5. Rohde, U.L. and Newkirk, D.P., “RF/Microwave Circuit Design for Wireless Applications”, John Wiley & Sons. 2000
  6. Larson, L.E., “RF and Microwave Circuit Design for Wireless Applications”, Artech House. 1996

Same as Textbooks