Communication Engineering (B.Tech)

Amplitude, frequency and pulse modulation, noise and radio transmitters and receivers.

6 महीनेअवधि 5Chapters28टॉपिक

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01Unit 1: Amplitude Modulation 6 टॉपिक

Need for modulation
AM: time and frequency domain, modulation index
Power relations in AM
DSB-SC, SSB and VSB
Generation: square-law, balanced and ring modulators
Detection: envelope and coherent detectors

02Unit 2: Angle Modulation 6 टॉपिक

Frequency and phase modulation
Frequency deviation and modulation index
Narrowband and wideband FM, Carson's rule
Direct and Armstrong (indirect) FM generation
FM detectors: slope, Foster-Seeley, ratio, PLL
Pre-emphasis and de-emphasis

03Unit 3: Radio Transmitters and Receivers 6 टॉपिक

AM and FM transmitters
TRF receiver
Superheterodyne receiver
Intermediate frequency and image frequency
Sensitivity, selectivity and fidelity
AGC

04Unit 4: Noise 6 टॉपिक

Sources of noise
Thermal and shot noise
Signal-to-noise ratio
Noise figure and noise temperature
Friis formula for cascaded stages
Noise in AM and FM systems

05Unit 5: Pulse Modulation and Multiplexing 4 टॉपिक

Sampling theorem
PAM, PWM and PPM: generation and detection
Time-division multiplexing
Frequency-division multiplexing

परिचय

आप यह कर पाएँगे

Explain the need for modulation and analyse AM, DSB-SC, SSB and VSB signals
Calculate power and bandwidth of AM and FM signals
Explain generation and detection of AM and FM
Explain superheterodyne receivers and their performance parameters
Calculate thermal noise, noise figure and noise temperature
Explain PAM, PWM, PPM and multiplexing

यह किसके लिए है

B.Tech Electronics & Communication Engineering students of Semester 4 under AKTU
Students preparing for AKTU examinations and GATE communications

आपको क्या चाहिए

Signals and Systems (Semester 3)

सवाल

Which syllabus is followed?

The current AKTU (Dr. A.P.J. Abdul Kalam Technical University, Lucknow) B.Tech syllabus of Communication Engineering (Electronics & Communication Engineering, Semester 4). If your university or college follows a different syllabus, the centre teaches from your own university syllabus.

How is the subject examined?

AKTU assesses it through sessional tests, assignments and attendance, and an end-semester university examination; the centre covers every unit with theory, derivations and numericals.

Are previous-year questions practised?

Yes. Unit-wise AKTU previous-year questions, short-answer questions and the test series are solved in class.