Binary phase shift keying (bpsk)
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This document describes a binary phase-shift keying (BPSK) modulation circuit using a CD4016 analog switch integrated circuit. In BPSK, the phase of a carrier wave is shifted by 180 degrees to represent a 1 and unchanged to represent a 0. The circuit uses a CD4016 to switch the phase of a sine wave based on an input binary signal. An op-amp inverts the sine wave and the CD4016 switches between the normal and inverted sine wave based on the binary input. The output provides the BPSK modulated signal.
Binary phase shift keying (bpsk)
- 1. 3/4/2016 Binary Phase Shift Keying (BPSK) modulation using CD4016 with Simulated output waveform Circuits Gallery http://www.circuitsgallery.com/2012/04/binaryphaseshiftkeyingbpsk.html 1/6 By 10 Comments Binary Phase Shift Keying (BPSK) modulation using CD4016 with Simulated output waveform Khaleel In binary phase shift keying (BPSK) modulation scheme, the phase of a carrier is changed in accordance with the digital pulse signals. BPSK modulator is basically a phase modulator. Here the transmitted signal is a sinusoid of fixed amplitude. It has one fixed phase when the data is at one level and when the data is at the other level, phase is shifted by 180 degree. Binary phase shift keying method has variety of applications in digital communications systems such as the wireless LAN standard, IEEE 802.11, digital modems, wireless telephone networks etc. Differential phase shift keying (DPSK) is an other type of phase shift keying technique which depends on the difference between successive phases. DPSK is significantly simpler to implement than ordinary PSK , since there is no need for the demodulator to have a copy of the reference signal to determine the exact phase of the received signal (it is a non coherent scheme). Here is the practical circuit of BPSK, it is build around CD4016 and 741 Op amp.Also read: Binary Amplitude Shift Keying(BASK) BPSK Circuit Diagram Components Required 1. Resistors (10kΩ) 2. 741 Op Amp 3. CD 4016 IC 4. Not Gate 7404 PSK Output Waveform Circuits Gallery Electronic Circuits and projects, DIY circuit diagrams, Robotics & Microcontroller Projects…..! Home Advertise Here About Us Contact Us
- 2. 3/4/2016 Binary Phase Shift Keying (BPSK) modulation using CD4016 with Simulated output waveform Circuits Gallery http://www.circuitsgallery.com/2012/04/binaryphaseshiftkeyingbpsk.html 2/6 Working An Op amp inverting amplifier with gain 1 is used to invert the phase of the input sine wave. Sine wave can be obtained from a function generator or by using a RC phase shift oscillator. Two switches inside the quad analog switch CD 4016 are used in the circuit.When the enable input of one gate is high, the input will appear at the output. When the binary data is 1, sine wave is switched to output because the sine wave is connected to 1 switch and the binary data is applied to enable pin (13 pin) of 1 switch. When binary data is 0, the 1 switch is disabled and 2 switch is enabled using NOT gate arrangement. Thus we get an inverted sine at the output. The output pins of both first and second switches are shorted and the output is taken from it. The block diagram is self explanatory. Components Pin out st th st st nd
- 6. 3/4/2016 Binary Phase Shift Keying (BPSK) modulation using CD4016 with Simulated output waveform Circuits Gallery http://www.circuitsgallery.com/2012/04/binaryphaseshiftkeyingbpsk.html 6/6 555 Circuits Alarm Circuits Amplifiers Arduino Basic Electronics Circuits C Programs Beginner Guide Charger Circuits Circuit Simulation DIY Hobby Circuits Electronics Animations Electronics Softwares Engineering Projects ESP8266 GPS Projects GSM Projects Indicator Circuits Inverter Circuits Java Applets MATLAB Microcontroller Projects Microprocessor Mikro C OpAmp Circuits Oscillator Circuits PIC Microcontroller PLC Power Supplies Proteus Radio Circuits Robotics School Projects Simple Electronic Projects Timer / Counters Tutorials Uncategorized Video Lab CircuitsGallery 31 ﻣﻘﻁﻊ ﻓﻳﺩﻳﻭ ﺍﺷﺗﺭﺍﻙ 999+ Gallery of Circuits Popular Circuits Simple low power Inverter Circuit (12V DC to 230V or 110V AC) diagram using CD4047 and IRFZ44 power MOSFET Top 10 Simple 555 Timer Projects Kits for Students 12v Battery Charger Circuit with Auto Cut off Top 10 Science fair Electronics projects for School students Home security alarm system circuit diagram Automatic water tank level controller motor driver circuit Engineering project without Microcontroller Powered by iSt@r Group of Technologies