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<html> <head> <title>RFID-Bulletin Board: Long range read passive tags., Ray Floyd at 10/25/2000 16:47</title> <!-- Anfang Header --><!-- Ende Header --> </head> <BODY BGCOLOR="#fffcf4"><!-- Anfang BeitragsseitenKopf --><!-- Ende BeitragsseitenKopf --><!-- AnfangBanner --><!-- EndeBanner --><blockquote> <center> <h1>Long range read passive tags.</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:icubed@tritel.net">Ray Floyd</a> at 25 Oct 2000 16:47:31:<p>One problem is in the definition of "passive" versus "active". One common approach is that "passive" is equivalent to "back scatter", while "active" means an active transmit function. A second approach means that "passive" has no battery, while "active" may. Amtech, among others, can detect "passive backscatter" tags with a battery to about 200 feet. <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="200"><input type=hidden name="origname" value="Ray Floyd"><input type=hidden name="origemail" value="icubed@tritel.net"><input type=hidden name="origsubject" value="Long range read passive tags."><input type=hidden name="origdate" value="25 Oct 2000 16:47:31"><input type=hidden name="subject" value="Re: Long range read passive tags."><input type=hidden name="body" value=">One problem is in the definition of "passive" versus "active". One common approach is that "passive" is equivalent to "back scatter", while "active" means an active transmit function. A second approach means that "passive" has no battery, while "active" may. Amtech, among others, can detect "passive backscatter" tags with a battery to about 200 feet. "><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: 200--><!--top: 202--><li><a href="202.htm">Re: Long range read passive tags.</a> <b>Jeremy Nysen</b> <i>10/26/2000 01:36</i>(<!--responses: 202-->0)<ul><!--insert: 202--></ul><!--end: 202--></ul><!--end: 200--><!-- 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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