JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• 1. To present overview of the fundamental concepts required for the design and analysis of RF stages of a modern wireless system.
• 2. To provide knowledge in design concepts of various stages of RF receiver
• 3. To know the noise reduction methods in RF receivers.

Course Outcomes

Students will be able to:

• 1. Choose proper operating frequencies for wireless communication systems
• 2. Design noise reduction methods for wireless communication systems
• 3. Design a Microwave amplifier, Mixer circuits, Switches etc.,

UNIT - I

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.

UNIT - II

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.

UNIT - III

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.

UNIT - IV

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.

UNIT - V

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

REFERENCE BOOKS:

• 1. Bahl, I. and Bhartia, P.- Microwave Solid State Circuit Design, 2nd Ed., John Wiley & Sons. 2003
• 2. Chang, K., Bahl, I. and Nair, V. - RF and Microwave Circuit and Component Design for Wireless Systems”, Wiley Interscience. 2002
• 3. Rohde, U.L. and Newkirk, D.P.- RF/Microwave Circuit Design for Wireless Applications, John Wiley & Sons. 2000
• 4. Larson, L.E. - RF and Microwave Circuit Design for Wireless Applications, Artech House. 1996 M.TECH.- I YEAR- II SEMESTER MICROWAVE AND RADAR ENGINEERING