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# EC3551 Transmission lines and RF Systems [PDF]

## EC3551 Transmission lines and RF Systems Study Materials

Anna University – EC3551 Transmission lines and RF Systems Regulation 2021 Syllabus , Notes , Important Questions, Question Paper with Answers Previous Year Question Paper.

UNIT I TRANSMISSION LINE THEORY EC3551 Transmission lines and RF Systems Syllabus

General theory of Transmission lines – the transmission line – general solution – The infinite line –
Wavelength, velocity of propagation – Waveform distortion – the distortion less line – Loading and
different methods of loading – Line not terminated in Z 0 – Reflection coefficient – calculation of
current, voltage, power delivered and efficiency of transmission – Input and transfer impedance –
Open and short circuited lines – reflection factor and reflection loss.

UNIT II HIGH FREQUENCY TRANSMISSION LINES EC3551 Transmission lines and RF Systems Notes

Transmission line equations at radio frequencies – Line of Zero dissipation – Voltage and current on
the dissipation less line, Standing Waves, Nodes, Standing Wave Ratio – Input impedance of the dissipation less line – Open and short circuited lines – Power and impedance measurement on lines –
Reflection losses – Measurement of VSWR and wavelength.

UNIT III IMPEDANCE MATCHING IN HIGH FREQUENCY LINE EC3551 Transmission lines and RF Systems Important Questions

Impedance matching: Quarter wave transformer ,One Eighth wave line, Half wave line- Impedance
matching by stubs- Single stub and double stub matching – Smith chart – Application of Smith chart,
Solutions of problems using Smith chart – Single and double stub matching using Smith chart.

UNIT IV WAVEGUIDES EC3551 Transmission lines and RF Systems Question Bank

Waves between parallel planes of perfect conductors- Transverse Electric waves and Transverse
Magnetic waves, Characteristics of TE and TM waves, Transverse Electromagnetic waves, TM and
TE waves in Rectangular waveguides, TM and TE waves in Circular waveguides.

UNIT V RF SYSTEM DESIGN CONCEPTS EC3551 Transmission lines and RF Systems Question Paper

Active RF components: Semiconductor basics in RF, bipolar junction transistors, RF field effect
transistors, High electron mobility transistors, Fundamentals of MMIC, Basic concepts of RF design:
Filters, couplers, power dividers, Amplifier power relations, Low noise amplifiers, Power amplifiers.

TEXTBOOKS EC3551 Transmission lines and RF Systems Notes

1. John D Ryder, “Networks lines and fields”,Prentice Hall of India,New Delhi,2005.(Unit I–IV)
Education Asia, Second Edition, 2002 (Unit – V)
3. Annapurna Das, Sisir K. Das, “Microwave Engineering”, McGraw Hill Education (India)
private limited, Third edition,2000.(Unit – V)

REFERENCES EC3551 Transmission lines and RF Systems Important Questions

1. Reinhold Ludwig and Powel Bretchko, “RF Circuit Design” – Theory and Applications”,
Pearson Education Asia, First Edition, 2001.
2. D. K. Misra, “Radio Frequency and Microwave Communication Circuits”- Analysis and
Design, John Wiley &amp; Sons, 2004.
3. Richard Chi-Hsi Li – , “RF Circuit Design” – A John Wiley &amp; Sons, Inc, Publications
4. W.Alan Davis, Krishna Agarwal, “Radio Frequency Circuit Design”, John willy &amp;
Sons,2001