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Electronic Circuit &
Communication
System
Yong Heui Cho @ Mokwon University
2
Electronic Circuit Design
2. Basic Circuit Theory
3. Basic Electronic Circuit
4. Electronic Ckt & Commo
System
5. Basic Measurement System
3
Communication Tx
• Tx: transmitter
 )cos()cos(
2
1
)cos()cos( yxyxyx 
BBf BBLO ff  BBLO ff 

← RFDH.com
4
Communication Rx
• Rx: receiver
 )cos()cos(
2
1
)cos()cos( yxyxyx 
BBfBBIF ff BBLO ff 
IFLO fff  IFff 

← RFDH.com
5
Analog System
6
Digital System
7
AM Receiver
8
FM Receiver
9
FM Receiver with IC
• One IC for FM radio and TV
– TDA7000: 70~120 MHz
TDA7000
block diagram
10
Radio Wave Detector

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Electronic Circuit and Communication System