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<html> <head> <title>RFID-Bulletin Board: Re: read range problem of Microchip's MCRF355/360, David Dressen at 2/08/2001 17:11</title> <!-- Anfang Header --><!-- Ende Header --> </head> <BODY BGCOLOR="#fffcf4"><!-- Anfang BeitragsseitenKopf --><!-- Ende BeitragsseitenKopf --><!-- AnfangBanner --><!-- EndeBanner --><blockquote> <center> <h1>Re: read range problem of Microchip's MCRF355/360</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:rfideng@stupid.com">David Dressen</a> at 08 Feb 2001 17:11:16:<p>As an answer to: <a href="310.htm">read range problem of Microchip's MCRF355/360</a> written by TY Lee at 08 Feb 2001 16:05:34:<p>You are correct that increasing the antenna signal amplitude will increase the read range. The antenna dimmensions and tuning are also very important to optimizing the read range. Microchip has some excellent application notes on this. AN725 specifically addresses read range. <p>http://www.microchip.com/10/appnote/category/rfid/index.htm<p>An entire reader reference design is also provided at:<p>http://www.microchip.com/10/lit/pline/rfid/guides/index.htm<p>David <p><p>>Could anyone help me with my problem:<br>>i am doing a research on microID MCRF355/360, hoping that I can increase the read range of the reader from 4 inches to about 10 inches. <br>>I propose disconnecting the antenna of the reader and add an amplifier before the signal enters the antenna, so that the antenna would be able to output a higher power level of more than 4Vpp; thus increasing the potential of the passive tag to read the signal.( passive tag MCRF355 reads at 4Vpp).<br>>Another way I think would work is to modify the passive tag. My question is: can I use N-turn circular coil with single layer copper wire to build the antenna, by forgetting the original square loop coil of the mcrf355 passive tag? Would this increase the reading potential of the tag, thus increasing the read range of the system?<br>>thank you.<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="310,311"><input type=hidden name="origname" value="David Dressen"><input type=hidden name="origemail" value="rfideng@stupid.com"><input type=hidden name="origsubject" value="Re: read range problem of Microchip's MCRF355/360"><input type=hidden name="origdate" value="08 Feb 2001 17:11:16"><input type=hidden name="subject" value="Re: read range problem of Microchip's MCRF355/360"><input type=hidden name="body" value=">You are correct that increasing the antenna signal amplitude will increase the read range. The antenna dimmensions and tuning are also very important to optimizing the read range. Microchip has some excellent application notes on this. AN725 specifically addresses read range. >http://www.microchip.com/10/appnote/category/rfid/index.htm>An entire reader reference design is also provided at:>http://www.microchip.com/10/lit/pline/rfid/guides/index.htm>David >>Could anyone help me with my problem:>>i am doing a research on microID MCRF355/360, hoping that I can increase the read range of the reader from 4 inches to about 10 inches. >>I propose disconnecting the antenna of the reader and add an amplifier before the signal enters the antenna, so that the antenna would be able to output a higher power level of more than 4Vpp; thus increasing the potential of the passive tag to read the signal.( passive tag MCRF355 reads at 4Vpp).>>Another way I think would work is to modify the passive tag. My question is: can I use N-turn circular coil with single layer copper wire to build the antenna, by forgetting the original square loop coil of the mcrf355 passive tag? Would this increase the reading potential of the tag, thus increasing the read range of the system?>>thank you."><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: 311--></ul><!--end: 311--><!-- 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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