NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)
GUIDED BY: MRS.BHAGYASHRI WANKHEDE
PRESENTED BY :
ASHISH SADAVARTI
MICROPROJECT SEMINAR ON
TITLE:-BUILD CIRCUIT TO GENERATE FSK FREQUENCY
SHIFT KEYING

AIM AND OBJECTIVE
INTRODUCTION
COURSE OUTCOME
DIAGRAM
WORKING / PROCEDURE
RESOURCES USED
APPLICATIONS
CONCLUSION SKILL DEVELOPED
REFERENCES
CONTENTS
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

AIM AND OBJECTIVE
 understand the actual working of circuit to generate fsk
shift keying frequency
 develop basic technical knowledge about the circuit
 identify different component active or passive
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

INTRODUCTION
 Frequency-shift keying (FSK) is the frequency modulation
system in which digital information is transmitted through
the discrete frequency change of a carrier wave.
 The technology is used in communication systems such as
amateur radio, caller ID, and urgent situation broadcasts.
The simplest FSK is binary FSK (BFSK).
 BFSK uses a pair of discrete frequencies to transmit
binary (0s and 1s) information. With this scheme, the “1”
is called the mark frequency and the “0” is called the space
frequency.
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

COURSE OUTCOME
 analyze the various error detection
 use all pulse code modulation technique
 maintenance system based on modulation technique
 develop the skill to construct and Mount component on
PCB
 apply the knowledge to build circuit carefully
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

DIAGRAM
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

WORKING / PROCEDURE
 In FSK, two carrier signals are used to produce FSK
modulated waveforms.
 The reason behind this, FSK modulated signals are
represented in terms of two different frequencies.
 The frequencies are called “mark frequency” and “space-
frequency”.
 Mark frequency has represented logic 1 and space-
frequency has represented the logic 0.
 There is only one difference between these two carrier
signals, i.e. carrier input 1 having more frequency than the
carrier input 2.
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

RESOURCES USED
s.no Name of resources specification quantity
01 Transistor 2n3904 01
02 Timer IC 555 01
03 Resistor 2k,1k 04
04 Capacitor 100nf 01
05 Pcb 3”*2” 01
06 Battery 9v 01
07 DSO 2mhz 01
08 Function generator 2mhz 01
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

APPLICATION
 Cordless technology
 Radio communication
 Telemetry
 caller ID
 garage door openers
 low frequency radio transmission
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

SKILL DEVELOPED
 Complex problem-solving skills and a methodical mind.
 Critical thinking.
 Strong interest in technology.
 Aptitude for maths.
 Communications skills.
 Strong IT skills.
 Time management and an ability to prioritise and plan
work effectively.
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

CONCLUSION AND REFERENCES
 https://en.wikipedia.org/wiki/Frequency-shift_keying
 https://www.gadgetronicx.com/fsk-modulator-using-
ic-555/
 Dcs practical manual
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)

Thank you
NIT POLYTECHNIC NAGPUR
(An NBAAccredited Institute)
(DEPARTMENT OF ELECTRONICS AND TELECOMMUNICATION
ENGINEERING)