Module 1
Introduction: communication systems – Modulation – need for modulation- bandwidth- Amplitude modulation – theory- mathematical representation- frequency spectrum – USB & LSB- power relation- Frequency modulation – theory- mathematical representation- frequency spectrum- Phase modulation- comparison of AM- FM- PM.
Introduction: communication systems – Modulation – need for modulation- bandwidth- Amplitude modulation – theory- mathematical representation- frequency spectrum – USB & LSB- power relation- Frequency modulation – theory- mathematical representation- frequency spectrum- Phase modulation- comparison of AM- FM- PM.
Module 2
Radio transmitters: AM transmitter – block diagram – Solid state modulators – circuit explanation- FM transmitter – reactance modulator- varactor diode modulator- Amstrong modulator.
Radio transmitters: AM transmitter – block diagram – Solid state modulators – circuit explanation- FM transmitter – reactance modulator- varactor diode modulator- Amstrong modulator.
Module 3
Radio receivers: Tuned radio frequency receiver- superheterodyne receiver – block schematic- selectivity- sensitivity- importance of IF – image frequency rejection – AM receivers – schematic explanation – RF amplifiers – circuit explanation – Mixer circuits – IF amplifiers – circuit explanation- simple diode detector – Automatic gain control circuit – simple and delayed AGC – FM receivers – block schematic explanation – amplitude limiting – FM demodulators: slope detectors- phase discriminator- ratio detectors.
Radio receivers: Tuned radio frequency receiver- superheterodyne receiver – block schematic- selectivity- sensitivity- importance of IF – image frequency rejection – AM receivers – schematic explanation – RF amplifiers – circuit explanation – Mixer circuits – IF amplifiers – circuit explanation- simple diode detector – Automatic gain control circuit – simple and delayed AGC – FM receivers – block schematic explanation – amplitude limiting – FM demodulators: slope detectors- phase discriminator- ratio detectors.
Module 4
Side band communication: Single side band transmission – suppression of carrier – balanced modulator – filtering of unwanted sideband – SSB receivers – block schematic explanation – pilot carrier receiver – suppressed carrier receiver – Vestigial side band transmission – transmitter and receiver responses – advantages of VSB in television.
Side band communication: Single side band transmission – suppression of carrier – balanced modulator – filtering of unwanted sideband – SSB receivers – block schematic explanation – pilot carrier receiver – suppressed carrier receiver – Vestigial side band transmission – transmitter and receiver responses – advantages of VSB in television.
Module 5
Telephone Systems – Telephone subscribers loop circuit – subscribers line interface circuit – Pulse and tone signaling – Frequency assignments – Electronic telephone – block schematic of a telephone set- block schematic of single line analog SLIC board – two wire repeaters – Electronic private automatic branching exchange – basic block schematic- Power line communication: block schematic explanation- Facsimile – FAX transmitter and receiver.
Telephone Systems – Telephone subscribers loop circuit – subscribers line interface circuit – Pulse and tone signaling – Frequency assignments – Electronic telephone – block schematic of a telephone set- block schematic of single line analog SLIC board – two wire repeaters – Electronic private automatic branching exchange – basic block schematic- Power line communication: block schematic explanation- Facsimile – FAX transmitter and receiver.
mgu university b.tech syllabus
References
1. Electronic communication Systems: Wayne Tomasi- Pearson Edn.
2. Electronic communication: Roody and Coolen- PHI.
3. Electronic Communication systems: George Kennedy- Mc Graw Hill.
4. Electronic and radio engineering: A P Mathur.
5. Telephony and Carrier current engineering: P N Das.
6. Modern communication Systems: Couch- PHI.
2. Electronic communication: Roody and Coolen- PHI.
3. Electronic Communication systems: George Kennedy- Mc Graw Hill.
4. Electronic and radio engineering: A P Mathur.
5. Telephony and Carrier current engineering: P N Das.
6. Modern communication Systems: Couch- PHI.