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Binary phase shift keying (bpsk)

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  • 3/4/2016 BinaryPhaseShiftKeying(BPSK)modulationusingCD4016withSimulatedoutputwaveformCircuitsGallery

    http://www.circuitsgallery.com/2012/04/binaryphaseshiftkeyingbpsk.html 1/6

    By 10Comments

    BinaryPhaseShiftKeying(BPSK)modulationusingCD4016withSimulatedoutput

    waveformKhaleel

    Inbinaryphaseshiftkeying(BPSK)modulationscheme,thephaseofacarrierischangedin

    accordancewiththedigitalpulsesignals.BPSKmodulatorisbasicallyaphasemodulator.Here

    thetransmittedsignalisasinusoidoffixedamplitude.Ithasonefixedphasewhenthedataisat

    onelevelandwhenthedataisattheotherlevel,phaseisshiftedby180degree.Binaryphase

    shiftkeyingmethodhasvarietyofapplicationsindigitalcommunicationssystemssuchasthe

    wirelessLANstandard,IEEE802.11,digitalmodems,wirelesstelephonenetworksetc.

    Differentialphaseshiftkeying(DPSK)isanothertypeofphaseshiftkeyingtechniquewhich

    dependsonthedifferencebetweensuccessivephases.DPSKissignificantlysimplerto

    implementthanordinaryPSK,sincethereisnoneedforthedemodulatortohaveacopyofthe

    referencesignaltodeterminetheexactphaseofthereceivedsignal(itisanoncoherent

    scheme).HereisthepracticalcircuitofBPSK,itisbuildaroundCD4016and741Opamp.Also

    read:BinaryAmplitudeShiftKeying(BASK)

    BPSKCircuitDiagram

    ComponentsRequired

    1.Resistors(10k)

    2.741OpAmp

    3.CD4016IC

    4.NotGate7404

    PSKOutputWaveform

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  • 3/4/2016 BinaryPhaseShiftKeying(BPSK)modulationusingCD4016withSimulatedoutputwaveformCircuitsGallery

    http://www.circuitsgallery.com/2012/04/binaryphaseshiftkeyingbpsk.html 2/6

    Working

    AnOpampinvertingamplifierwithgain1isusedtoinvertthephaseoftheinputsine

    wave.

    SinewavecanbeobtainedfromafunctiongeneratororbyusingaRCphaseshift

    oscillator.

    TwoswitchesinsidethequadanalogswitchCD4016areusedinthecircuit.Whenthe

    enableinputofonegateishigh,theinputwillappearattheoutput.

    Whenthebinarydatais1,sinewaveisswitchedtooutputbecausethesinewaveis

    connectedto1 switchandthebinarydataisappliedtoenablepin(13 pin)of1 switch.

    Whenbinarydatais0,the1 switchisdisabledand2 switchisenabledusingNOTgate

    arrangement.Thuswegetaninvertedsineattheoutput.

    Theoutputpinsofbothfirstandsecondswitchesareshortedandtheoutputistakenfrom

    it.Theblockdiagramisselfexplanatory.

    ComponentsPinout

    st th st

    st nd

    http://2.bp.blogspot.com/-wNtNpEk-zus/T5O1W-dO12I/AAAAAAAAAF0/j9x9UKBLvco/s1600/BPSK+Waveform+3.pnghttp://2.bp.blogspot.com/-Dm5YU5nXHtI/T5O5VeMrhfI/AAAAAAAAAGc/mK9rHLEbLwo/s1600/BPSK+lock+Diagram+2.pnghttp://www.circuitsgallery.com/2012/04/op-amp-741-inverting-amplifier-circuit.htmlhttp://www.circuitsgallery.com/2012/03/rc-phase-shift-oscillator-using-741-op.html

  • 3/4/2016 BinaryPhaseShiftKeying(BPSK)modulationusingCD4016withSimulatedoutputwaveformCircuitsGallery

    http://www.circuitsgallery.com/2012/04/binaryphaseshiftkeyingbpsk.html 3/6

    August8,2012at12:59am

    September11,2013at2:15pm

    September12,2013at1:01pm

    March17,2014at3:07pm

    February24,2015at3:24pm

    RelatedCircuits:

    BinaryAmplitudeShiftKeying

    PhaseShiftKeying(PSK)Modulation

    RCPhaseshiftOscillatorusing741op

    AmplitudeShiftKeying(ASK)

    10thoughtsonBinaryPhaseShiftKeying(BPSK)modulationusingCD4016withSimulatedoutputwaveform

    Anonymous

    Niceexplnatnofthecircuit..thanks

    Reply

    Anonymous

    itdoesntworkproperly.becausethesinwaveanddigitalbinaryisnotsynchronized.thebitdurationshouldbeassameassinwaveperiodandalsotheyshouldbeginandendassametime.

    Reply

    admin

    Thereisnoscopeofsynchronization.Itsonlyananalogswitch.

    Reply

    Mark

    Wow,fantasticbloglayout!Howlonghaveyoubeenbloggingfor?youmakeblogginglookeasy.Theoveralllookofyourwebsiteiswonderful,letalonethecontent!

    Reply

    richard

    isthisICispossibletouseforqpskmodulator?

    http://1.bp.blogspot.com/-jbxfd79A9wA/T5O3XUMGB3I/AAAAAAAAAGM/gwLxQaSZoRo/s1600/CD4016+pinout.jpghttp://2.bp.blogspot.com/-XLI8IWqXiMI/T5O3TLsZETI/AAAAAAAAAGE/KXdlv60zMQs/s1600/7404+Not+gate.jpghttp://4.bp.blogspot.com/-NlmUEIGQJ5E/T5O3Z8pLWZI/AAAAAAAAAGU/UKHBiU_9dyA/s1600/Op+Amp+IC+741.jpghttp://www.circuitsgallery.com/2012/05/binary-amplitude-shift-keying-bask-or.htmlhttp://www.circuitsgallery.com/2013/03/psk-matlab-code2.htmlhttp://www.circuitsgallery.com/2012/03/rc-phase-shift-oscillator-using-741-op.htmlhttp://www.circuitsgallery.com/2012/08/ask-modulation-matlab-code2.htmlhttp://www.circuitsgallery.com/2012/04/binary-phase-shift-keying-bpsk.html?replytocom=12#respondhttp://www.circuitsgallery.com/2012/04/binary-phase-shift-keying-bpsk.html?replytocom=241#respondhttp://www.blogger.com/profile/16569584645827453881http://www.circuitsgallery.com/2012/04/binary-phase-shift-keying-bpsk.html?replytocom=245#respondhttp://www.circuitsgallery.com/2012/04/binary-phase-shift-keying-bpsk.html?replytocom=2037#respond

  • 3/4/2016 BinaryPhaseShiftKeying(BPSK)modulationusingCD4016withSimulatedoutputwaveformCircuitsGallery

    http://www.circuitsgallery.com/2012/04/binaryphaseshiftkeyingbpsk.html 4/6

    April7,2015at2:47pm

    April14,2015at11:13am

    July22,2015at12:22am

    July24,2015at1:49pm

    August10,2015at1:13pm

    Reply

    LuizVercosa

    Verycool!Thankyou!

    Reply

    krishna

    frequencyrange?

    Reply

    sreelekshmi

    thanku.

    Reply

    Habeesha

    HiSreelekshmi,Welcome

    Reply

    Fida

    Hello,Thisisnice.doyoualsohaveaDemodulatoridea/circuit?Thankyou

    Reply

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