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<html> <head> <title>RFID-Bulletin Board: Re: modulation subcarrier of RFID system (picture), Klaus Finkenzeller at 8/31/2000 08:13</title> <!-- Anfang Header --><!-- Ende Header --> </head> <BODY BGCOLOR="#fffcf4"><!-- Anfang BeitragsseitenKopf --><!-- Ende BeitragsseitenKopf --><!-- AnfangBanner --><!-- EndeBanner --><blockquote> <center> <h1>Re: modulation subcarrier of RFID system (picture)</h1> </center><!-- Anfang BeitragsNavigationsLeisteOben --><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><center><P><B>[ <a href="../index.htm">RFID-Bulletin Board</a> ]</B></P></center><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><!-- Ende BeitragsNavigationsLeisteOben --><p>Written by <a href="mailto:klaus.finkenzeller@web.de">Klaus Finkenzeller</a> at 31 Aug 2000 08:13:49:<p>As an answer to: <a href="141.htm">modulation subcarrier of RFID system</a> written by Theresia at 23 Aug 2000 12:25:43:<p><center><img src="http://rfid-handbook.com/scrr.gif"></center><p>>Dear RFID community,<br>>I want to know about load modulation with subcarrier, that used in RFID system.<br>>How to modulate the carrier and subcarrier, and how is the shape of the <br>>signal after it modulated<p>The picture above shows the generation of a load-modulation with subcarrier step by step:<p>a) The data bits in baseband coding (e. g. NRZ or Manchester-Code).<br>b) A Subcarrier-signal (e. g. 847 kHz) after ASK-modulation with said data signal (a).<br>c) The voltage at the transponder coil, after load-modulation with the modulated subcarrier signal (b).<br>d) Signal at a reader coil while receiving a subcarrier-load-modulated signal (c) from a transponder.<p>With best regards,<br>Klaus Finkenzeller<br><br><br><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><form method=POST action="http://f16.parsimony.net/forum26490/wwwforum.cgi?formular"><input type=hidden name="followup" value="141,151"><input type=hidden name="origname" value="Klaus Finkenzeller"><input type=hidden name="origemail" value="klaus.finkenzeller@web.de"><input type=hidden name="origsubject" value="Re: modulation subcarrier of RFID system (picture)"><input type=hidden name="origdate" value="31 Aug 2000 08:13:49"><input type=hidden name="subject" value="Re: modulation subcarrier of RFID system (picture)"><input type=hidden name="body" value=">>Dear RFID community,>>I want to know about load modulation with subcarrier, that used in RFID system.>>How to modulate the carrier and subcarrier, and how is the shape of the >>signal after it modulated>The picture above shows the generation of a load-modulation with subcarrier step by step:>a) The data bits in baseband coding (e. g. NRZ or Manchester-Code).>b) A Subcarrier-signal (e. g. 847 kHz) after ASK-modulation with said data signal (a).>c) The voltage at the transponder coil, after load-modulation with the modulated subcarrier signal (b).>d) Signal at a reader coil while receiving a subcarrier-load-modulated signal (c) from a transponder.>With best regards,>Klaus Finkenzeller"><input type="submit" name="abschicken" value="Write an answer"> <br><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><p><a name="followups"><B>Answers:</B></a><br><ul><!--insert: 151--></ul><!--end: 151--><!-- Anfang BeitragsNavigationsLeisteUnten --><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><center><P><B>[ <a href="../index.htm">RFID-Bulletin Board</a> ]</B></P></center><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><!-- Ende BeitragsNavigationsLeisteUnten --></blockquote><!-- Anfang BeitragsseitenFuss --><!-- Ende BeitragsseitenFuss --></body></html>⌨️ 快捷键说明
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