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<html> <head> <title>RFID-Bulletin Board: max. antenna dimension for 13.56MHz, Reinier Gerritsen at 8/10/2001 12:46</title> <!-- Anfang Header --><!-- Ende Header --> </head> <BODY BGCOLOR="#fffcf4"><!-- Anfang BeitragsseitenKopf --><!-- Ende BeitragsseitenKopf --><!-- AnfangBanner --><!-- EndeBanner --><blockquote> <center> <h1>max. antenna dimension for 13.56MHz</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:r.gerritsen@championchip.nl">Reinier Gerritsen</a> at 10 Aug 2001 12:46:57:<p>Can anyone help me with the correct interpretation of a sentence from ETSI 300 330. For inductive loop coil transmitters:<p>"The length of any antenna loop element shall be < lamda/4 or <30 m wichever is shorter"<p>For 13.56 MHz, lambda/4 = 5.5 m. Question: what is an "antenna loop element?" Is it the length or width of the antenna, or total antenna wire length (perimeter)? Can I make a loop antenna as big as 5.5 x 5.5 meter, or is it only 1.25 x 1.25 meter?<br><br><br><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><form method=POST action="../wwwforum.cgi?formular"><input type=hidden name="followup" value="437"><input type=hidden name="origname" value="Reinier Gerritsen"><input type=hidden name="origemail" value="r.gerritsen@championchip.nl"><input type=hidden name="origsubject" value="max. antenna dimension for 13.56MHz"><input type=hidden name="origdate" value="10 Aug 2001 12:46:57"><input type=hidden name="subject" value="Re: max. antenna dimension for 13.56MHz"><input type="submit" name="abschicken" value="Write an answer"> <br><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><p><a name="followups"><B>List of answers:</B></a><br><ul><!--insert: 437--><!--top: 438--><li><a href="438.htm">Re: max. antenna dimension for 13.56MHz</a> <b>Koos Fockens</b> <i>8/13/2001 09:23</i>(<!--responses: 438-->0)<ul><!--insert: 438--></ul><!--end: 438--></ul><!--end: 437--><!-- 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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