[Flexradio] Terminology
I still do not understand I/Qcan some one please tell me what this means or at least stands for . thanks John kb2huk ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
Re: [Flexradio] Terminology
http://www.ni.com/white-paper/4805/en -- Richard A Clafton | the brITish guy | W5\G7EIX RIROC - Hosting - Development - Technology http://www.riroc.com | rclaf...@riroc.com Jack of all trades, master of none, though often better than the master of one. -Original Message- From: FlexRadio [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of John Molenda Sent: Monday, November 05, 2012 9:48 AM To: flexradio@flex-radio.biz Subject: [Flexradio] Terminology I still do not understand I/Qcan some one please tell me what this means or at least stands for . thanks John kb2huk ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
Re: [Flexradio] Terminology
On 11/5/2012 10:47 AM, John Molenda wrote: I still do not understand I/Qcan some one please tell me what this means or at least stands for . thanks John kb2huk ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ I = In phase: The carrier fed to the detector or modulator is at zero degrees phase. Q = Quadrature phase: The carrier fed to the detector or modulator is 90 degrees out of phase with reference to the in-phase carrier. By combining the I and Q baseband streams properly many different transmission modes can be generated or demodulated. A more detailed explanation is here: http://en.wikipedia.org/wiki/Quadrature_phase An excellent explanation of using I/Q techniques for modulation and demodulation of AM, DSB, and SSB can be found in Synchronous Communications, _Proceedings of the IEEE_, December 1956; republished in same journal in Vol 90, no. 8, August 2002 as a classic paper. But I don't think it's available free online. With my best, Kevin, WB4AIO. ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
Re: [Flexradio] Terminology
Quadrature Signals: Complex but not complicated by Richard Lyons. http://www.dspguru.com/sites/dspguru/files/QuadSignals.pdf --- Graham / KE9H == On Mon, Nov 5, 2012 at 9:47 AM, John Molenda cdistflatf...@gmail.comwrote: I still do not understand I/Qcan some one please tell me what this means or at least stands for . thanks John kb2huk __**_ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/**mailman/listinfo/flexradio_**flex-radio.bizhttp://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/**flexradio%40flex-radio.biz/http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
Re: [Flexradio] Terminology
I/Q stands for Inphase and Quadrature, the two signals that enable the magic in SDRs Here are a couple of tutorials: http://www.fourier-series.com/IQMod/index.html http://www.physicsforums.com/showthread.php?t=170231 Mickey On Nov 5, 2012, at 10:47 AM, John Molenda cdistflatf...@gmail.com wrote: I still do not understand I/Qcan some one please tell me what this means or at least stands for . thanks John kb2huk ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
Re: [Flexradio] Terminology
Thanks for all the info guys . John kb2huk On 11/5/2012 11:39 AM, Graham Haddock wrote: Quadrature Signals: Complex but not complicated by Richard Lyons. http://www.dspguru.com/sites/dspguru/files/QuadSignals.pdf --- Graham / KE9H == On Mon, Nov 5, 2012 at 9:47 AM, John Molenda cdistflatf...@gmail.com mailto:cdistflatf...@gmail.com wrote: I still do not understand I/Qcan some one please tell me what this means or at least stands for . thanks John kb2huk ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz mailto:FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
Re: [Flexradio] Terminology
After reading this I have aquired a new respect for Gerald and his crew! From: fishflor...@gmail.com Date: Mon, 5 Nov 2012 12:27:56 -0500 To: cdistflatf...@gmail.com CC: flexradio@flex-radio.biz Subject: Re: [Flexradio] Terminology I/Q stands for Inphase and Quadrature, the two signals that enable the magic in SDRs Here are a couple of tutorials: http://www.fourier-series.com/IQMod/index.html http://www.physicsforums.com/showthread.php?t=170231 Mickey On Nov 5, 2012, at 10:47 AM, John Molenda cdistflatf...@gmail.com wrote: I still do not understand I/Qcan some one please tell me what this means or at least stands for . thanks John kb2huk ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/ ___ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flexradio.com/ Homepage: http://www.flexradio.com/
