CSVTU BE VII Semester ET&T Microwave Communication & Engineering Syllabus

Chhattisgarh Swami Vivekanand Technical University, Bhilai

Semester : VII Branch: Electronics & Telecommunication

Subject: Microwave Communication & Engineering

Total Theory Periods: 40 Total Tutorial Periods: 12

Total Marks in End Semester Examination: 80

Minimum number of Class tests to be conducted: Two

UNIT – I

Wave Propagation:

 

Sky wave: Surface wave; space wave: Field and Range Calculation. Ionosphere

Propagation –Refractive Index at High Frequencies. Mechanism of Radio Wave Bending, Critical Frequency.

 

Effect of Earth’s Magnetic Field. Effective Dielectric Constant and conductivity. MUF .Skip Distances.

 

Optimum Working Frequency. Multihop propagation .Ionospheric Abnormalities. Tropospheric Propagation.

 

Field Strength of Troposphere wave. Effect of Earth’s Curvature and Dielectric Constant. Tropospheric Scatter

 

and Duct propagation

 

UNIT – II

Microwave Linear Beam and Crossed-Field Tubes:

 

Failure of conventional tube at high frequency; Klystron-

Velocity modulation; Bunching; output power and loading; Reflex klystron-Velocity modulation; power output

 

and efficiency and electronic admittance; Helix traveling wave tubes; amplification process; Conventional

 

current; Electric field wave modes; Basic principle of coupled cavity; Magnetron-Types and Principles of

 

operation; Modes of oscillation; Strapping; pi-mode separation.

 

UNIT – III

Microwave Devices :

 

Transistors, Tunnel Diodes and Microwave FETs: Structure; Operation; Characteristics

and Power frequency limitations of microwave transistors; Tunnel diodes and Field-Effect Transistors. Transfer

 

Electron Devices: Gunn diode; Gunn effect; Principle and Mode of operation; Microwave generation and

 

amplification Tunnel Diode; PIN diode and Crystal diode. Avalanche Transit- Time Devices: Physical Structure;

 

Principle of operation; Characteristics; Power output and Efficiency of IMPATT, TRAPATT and BARITT

 

Diodes; Parametric amplifiers.

 

UNIT – IV

Microwave Components and Measurement:

 

Rectangular cavity resonators; Q of a cavity resonator;

Reentrant cavities; Slow-wave structure; Microwave hybrid circuits; S-parameters and their properties; Wave

 

guide tees ; Hybrid ring; Waveguide corners bends and twists; Two hole directional coupler; S- Matrix;

 

Circulators and Isolators; Hybrid couplers, MICROWAVE MEASUREMENT: Microwave bench; Precautions;

 

Power measurement; Bolometric method; Attenuation; VSWR; Impedance, Frequency and Q of the Cavity.

 

UNIT – V

Microwave Filters:

 

Periodic structures – Analysis of infinite periodic structures and terminated periodic

structures, Filter design by image parameter method – Constant k, m-derived and composite. Filter design by

 

insertion loss method. Filter transformation and implementation.

 

Name of Text Books:

1. Microwave Devices and Circuits by Samuel Y. Liao, 3

rd

Ed., Pearson Education

2. Foundations of Microwave Engineering by R .E. Collin, TMH Pub.

 

 

Name of Reference Books:

1. Microwave Principles by Reich

2. Microwaves, Gupta, New Age International Publishers

3. Microwave Semiconductor Devices, Roy & Mitra, PHI

4. D. M. Pozar:

Microwave Engineering

, John Wiley, 1998, 2/e.

5. G. D. Vendelin, A. M. Pavio and U. L. Rohde:

 

 

Microwave Circuit Design

, John Wiley, 1990.

6. Guillermo Gonzalez,

 

 

Microwave Transistor Amplifiers: Analysis and Design

(2nd Edition), Prentice

 

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