1040234340                Basics of Communication Engineering

                                              Practicum
Unit I INTRODUCTION TO COMMUNICATION ENGINEERING
Electromagnetic Frequency Spectrum: Introduction to
Communication-Electromagnetic Frequency Spectrum – Relationship
between Wavelength and Frequency
Filters: Definition, Types of Filters- LPF, HPF and BPF (Frequency
Response Characteristics only) -applications
Introduction to Modulation: Definition- Need for Modulation – Types
of modulation

Ex.No Name of the Experiment
1 Construct and Test the performance of LPF and HPF 6
2 Construct and Test the performance of BPF.
  Unit II AMPLITUDE MODULATION
Amplitude modulation (AM): Definition – Waveform representation
of AM – Expression for AM and modulation index – Frequency spectrum
of AM – AM sidebands: DSB, SSB and VSB
AM Transmitter and Receiver: AM Transmitter-Super Heterodyne
Receiver

3

Ex.No Name of the Experiment
3
Construct and Test the Performance of AM Modulator.

4
Construct and Test the Performance of AM demodulation using
envelope detector.
Unit III ANGLE MODULATION

Frequency Modulation (FM): Concept of Angle Modulation-
Waveform representation of FM – Modulation index- Modulation and

Demodulation of FM: Block diagram of FM Transmitter and Receiver-
Basics of Phase modulation

Ex.No Name of the Experiment
5 Construct and test the performance of FM Modulator.

6 Construct and test the performance of FM Demodulator

Unit IV PULSE MODULATION
Pulse Analog Modulation Techniques: Generation and detection of
PAM, PWM, PPM.
Pulse Digital Modulation Techniques: PCM, DPCM and DM
Transmitter and Receiver.

Ex.No Name of the Experiment
7 Construct and test the performance of Sample and Hold circuit. 6
8 Construct and test the performance of Pulse Width Modulator.
Unit V AUDIO SYSTEMS AND INTRODUCTION TO ANTENNA
Microphones: Definition-Construction and performance of the
following microphones: Carbon, Moving coil and Velocity ribbon.
Loudspeakers: Construction and working of dynamic cone type –
Surround-sound systems.
Antenna: Definition-types of antenna (parabolic reflector antenna,
Microstrip patch antenna)

Ex.No Name of the Experiment
9
Determine the directional characteristics of Moving Coil
Microphone. 6
10 Determine the directional characteristics of Dynamic cone
Loudspeaker.

SIMULATION EXPERIMENTS

Note: Experiments should be designed and verified through open
source simulation tools (Any five experiments)
Ex.No Name of the Experiment
1 Simulation of frequency response of LPF
2 Simulation of frequency response of HPF
3 Simulation of frequency response of BPF
4 Simulation of AM generation
5 Simulation of FM generation

6 Simulation of PM generation.

7 Simulation of PAM generation.
8 Simulation of PWM generation.
9 Simulation of PPM generation.
10 Simulation of Delta modulation.