Curriculum Objectives
* To understand basic theories of digital and analog communication
* To design and implement analog/ digital modulator and demodulator
* To understand the applications of balanced modulator circuit.
Curriculum Outline
* Design and Implementation of RF oscillators and filters
* Design and implementation of analog AM/ FM modulation and demodulation
* Design and implementation of a converter between digital and analog
* Design and implementation of ASK and FSK modulation and demodulation
* Design and implementation of PSK and QPSK modulation and demodulation
RF Oscillator Circuits Design
Experiment 1: Colpitts Oscillator Circuit
(Oscillation Frequency: 1 MHz ~ 10 MHz)
Experiment 2: Hartley Oscillator Circuit
(Oscillation Frequency: 500 kHz~ 2MHz)
Second Order Filter Circuits Design
Experiment 1: 2nd Order Low-Pass Filter Circuit
( Low-pass -3 dB Frequency: 1 kHz ~ 10 kHz)
Experiment 2: 2nd Order High-Pass Filter Circuit
(High-pass -3dB Frequency: 800 Hz ~ 8 kHz)
Experiment 3: 2nd Order Band-Pass Filter Circuit
(Center Frequency: 6 kHz; Bandwidth: 10 kHz)
AM Modulator Design
Experiment 1: AM Circuit
(Carrier Signal: 500 kHz~3 MHz, Audio Signal Frequency: 1kHz ~ 3kHz)
AM Demodulator Design
Experiment 1: AM Diode Detection Circuit
(Carrier Signal: 200 kHz ~ 300 kHz; Audio Signal Frequency: 1 kHz ~ 3 kHz)
Experiment 2: AM Product Detection Circuit
(Carrier Signal: 500 kHz ~ 3 MHz; Audio Signal Frequency: 1 kHz ~ 3 kHz;
Modulation Index: 50 %)
COM-10003
FM Modulator Circuit Design
Experiment 1: The Specification Measurement of MC1648 VCO
( Oscillation Frequency: 2 MHz ~ 3 MHz)
Experiment 2: MC1648 FM Circuit
(Carrier Signal: 2.8 MHz; Audio Signal Frequency: 3 kHz ~ 8 kHz)
Experiment 3: The Specification Measurement of LM566 VCO
( Oscillation Frequency: 1 kHz ~ 30 kHz)
Experiment 4: LM566 FM Circuit
(Carrier Signal: 20 kHz; Audio Signal Frequency: 1 kHz ~ 5 kHz)
FM Demodulation Circuit Design
Experiment 1: The Specification Measurement of LM565 PLL
( Nature Frequency: 0.6 kHz ~ 77 kHz; Phase locked Range: 1.1 kHz ~ 3.9 kHz;
Phase Caught Range: 1.2 kHz ~ 3.8 kHz)
Experiment 2: The Specifications of Voltage and Frequency for LM565 PLL
(Input Signal Frequency: 0.5 kH~ 23.5 kHz;Output Voltage: 3 V ~ 4.5V)
Experiment 3: LM 565 Phase locked Loop Circuit
( Nature Frequency: 20 kHz; Audio Signal Frequency: 1 kHz ~ 3 kHz)
Experiment 4: FM to AM Discriminator Circuit
(Nature Frequency: 2 MHz; Audio Signal Frequency: 1 kHz ~ 3 kHz)
Analog to Digital Converter Circuit Design
Experiment 1: ADC 0804 Circuit
( Resolution: 8 bits; Analog Input Voltage: 0V ~ 5V)
Experiment 2: ADC 0809 Circuit
( Resolution: 8 bits; Analog Input Voltage: 0V ~ 5V; Clock Frequency: 120 kHz)
Digital to Analog Converter Circuit Design
Experiment 1:Unipolar DAC 0800 Circuit
( Digital Input: 8 bits; Analog Output Voltage: 0V ~ 5V; Step Value: 0.019V)
Experiment 2: Bipolar DAC 0800 Circuit
( Digital Input: 8 bits; Analog Output Voltage: -5V ~ 5V; Step Value: 0.038V)
Pulse Width Modulation Circuit Design
Experiment 1: uA741 PWM Circuit
(Carrier Signal: 1.5 kHz ~ 2 kHz; Audio Signal Frequency: 500 Hz)
Experiment 2: LM 566 PWM Circuit
(Carrier Signal: 5 kHz ~ 10 kHz; Audio Signal Frequency: 1 kHz)
Pulse Width Demodulation Circuit Design
Experiment 1: PWM Demodulation Circuit
(Carrier Signal: 5 kHz ~ 6 kHz; Audio Signal Frequency: 500 Hz ~ 700 Hz)
Amplitude-Shift Keying Modulation Circuit Design
Experiment 1: ASK Modulation Circuit
(Carrier Signal: 20 kHz ~ 100 kHz; Modulation Signal Frequency: 1 kHz ~ 10 kHz)
Amplitude-Shift Keying Demodulation Circuit Design
Experiment 1: ASK Non-coherent Detection Circuit
(Carrier Signal: 20 kHz ~ 100 kHz; Modulation Signal Frequency: 1 kHz ~ 10 kHz)
Experiment 2: ASK Coherent Detection Circuit
(Carrier Signal: 20 kHz ~ 100 kHz; Modulation Signal Frequency: 1 kHz ~ 10 kHz)
Frequency-Shift Keying Modulation Circuit Design
Experiment 1: FSK Modulation Circuit
(Space Signal: 1370 Hz; Mark Signal: 870 Hz; Data Signal: 200 Hz ~ 5 kHz)
Frequency-Shift Demodulation Circuit Design
Experiment 1: FSK Demodulation Circuit
(Space Signal: 1370 Hz; Mark Signal: 870 Hz; Data Signal: 200 Hz ~ 5 kHz)
Phase-Shift Keying Modulation Circuit Design
Experiment 1: PSK Modulation Circuit
(Carrier Signal: 100kHz; Data Rate: 200 bps; Data Signal: 100 Hz ~ 1 kHz)
Phase-Shift Keying Demodulation Circuit Design
Experiment 1: PSK Demodulation Circuit
(Carrier Signal: 100kHz; Data Rate: 400 bps ~ 1000 bps; Data Signal: 100 Hz ~ 1 kHz)
COM-10009
QPSK Modulation Circuit Design
Experiment 1: Bit-splitter Circuit
(Data Rate: 100 bps ~ 1000 bps)
Experiment 2: QPSK Modulation Circuit
(Carrier Signal: 20 kHz; Data Rate: 1000 bps)
QPSK Demodulation Circuit Design
Experiment 1: Signal-square and PLL Circuit
(Carrier Signal: 20 kHz; Data Rate: 1000 bps)
Experiment 2: QPSK Demodulation Circuit
(Carrier Signal: 20 kHz; Data Rate: 1000 bps)
FG-442002: Function Generator and DC Power Supply (optional)
Function Generator:
Two signal output ports
Freq. Range: 10 Hz ~ 100KHz and 100Hz ~ 1 MHz
Waveforms: Sine, Triangle, Square, TTL Pulse
Amplitude: 10 Vpp
Built-in 6-digit frequency counter
Large 0.5" LED display
Overload protection
DC Power Supply:
Triple bipolar voltage output
Constant voltage operation
Low ripple and noise
Oscilloscope (optional)
