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<html> <head> <title>RFID-Bulletin Board: Re: How long is RFID antenna in a high speed conveyor system., Rodrigue GIL at 5/24/2000 15:02</title> <!-- Anfang Header --><!-- Ende Header --> </head> <BODY BGCOLOR="#fffcf4"><!-- Anfang BeitragsseitenKopf --><!-- Ende BeitragsseitenKopf --><!-- AnfangBanner --><!-- EndeBanner --><blockquote> <center> <h1>Re: How long is RFID antenna in a high speed conveyor system.</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:rodrigue.gil@infineon.com">Rodrigue GIL</a> at 24 May 2000 15:02:17:<p>As an answer to: <a href="102.htm">How long is RFID antenna in a high speed conveyor system.</a> written by WJ at 23 May 2000 20:56:11:<p>>Hi,<br>>What are the dimensions of the antenna of a RFID system with <br>>the following specifications:<br>>maximum dimensions of the passive : 5 cm x 10 cm<br>>speed of moving tag : 8 m/s<br>>reading distance : 5 cm<br>>data : 2 bytes<br>>frequency : 13.56 MHz<br>>Is the antenna maybe 10, 20 or 30 cm long?<br>>The RFID system is used in a high speed (max. 8 m/s) conveyor system, so we want a antenna<br>>that is not long. <br>>Regards,<br>>WJ<p>Hi,<p>just to react to your mail...<br>according to your distance specification, and if we stay in "standardised products" you can use either proximity/vicinity passive cards (ISO14443 or ISO15693), the main difference is the limitation on the data rate between antenna and tag respectively to these norms(106kbit/s and 26kbit/s)<p>first questions: will you save money using this technology? why?<br>if yes, you have to choose:<br>>which kind of "passive chip" from which manufacturer you want to use...memory should be sufficient (price issue)<br>>choose the reader that is able to handle the "passive" tag...(price), or make it by your own (development time)<p>second question is: do you need to read and/or write data?<br>>>if you just need to get a serial number, it can be very fast cause you do not need the security...RF time is about some milliseconds (less than 10ms but it depends on the system complexity and time processing)<br>>>if you want to use "passive tag", you should use full fonctionnality of the device, or maybe "contactless" is not the right technology for your application (bar code should be sufficient then) <p>do you need to protect your data against re-reading/re-writing by a third party? (security)<p>Maybe it is too much question and it does not reply to your question but if you need further details, please do not hesitate to contact me cause I am really interested in your application.<p>Anyway, I worked on a "look like" application for "post mail" and we designed a "rectangular PCB" (15cm x 4 cm) with several turns. Do not forget that antenna need to be tuned: big antenna are harder to tune sometimes.<br>Application was performing anticollision (up to 2 tags in the field), getting serial number and halting the chip.<br> <br>Best Regards,<p>Rodrigue GIL<br>Contactless Application Engineer <p>Infineon Technologies<br>Security & Chip Card ICs<br>Application Support<br>St.-Martin-Str. 76, D-81541 M黱chen<br>Tel.: +49-89-234-81105<br>Fax: +49-89-234-22308<br>mobile: +49-170-793-8372<br>Email: rodrigue.gil@infineon.com<p><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="102,103"><input type=hidden name="origname" value="Rodrigue GIL"><input type=hidden name="origemail" value="rodrigue.gil@infineon.com"><input type=hidden name="origsubject" value="Re: How long is RFID antenna in a high speed conveyor system."><input type=hidden name="origdate" value="24 May 2000 15:02:17"><input type=hidden name="subject" value="Re: How long is RFID antenna in a high speed conveyor system."><input type=hidden name="body" value=">>Hi,>>What are the dimensions of the antenna of a RFID system with >>the following specifications:>>maximum dimensions of the passive : 5 cm x 10 cm>>speed of moving tag : 8 m/s>>reading distance : 5 cm>>data : 2 bytes>>frequency : 13.56 MHz>>Is the antenna maybe 10, 20 or 30 cm long?>>The RFID system is used in a high speed (max. 8 m/s) conveyor system, so we want a antenna>>that is not long. >>Regards,>>WJ>Hi,>just to react to your mail...>according to your distance specification, and if we stay in "standardised products" you can use either proximity/vicinity passive cards (ISO14443 or ISO15693), the main difference is the limitation on the data rate between antenna and tag respectively to these norms(106kbit/s and 26kbit/s)>first questions: will you save money using this technology? why?>if yes, you have to choose:>>which kind of "passive chip" from which manufacturer you want to use...memory should be sufficient (price issue)>>choose the reader that is able to handle the "passive" tag...(price), or make it by your own (development time)>second question is: do you need to read and/or write data?>>>if you just need to get a serial number, it can be very fast cause you do not need the security...RF time is about some milliseconds (less than 10ms but it depends on the system complexity and time processing)>>>if you want to use "passive tag", you should use full fonctionnality of the device, or maybe "contactless" is not the right technology for your application (bar code should be sufficient then) >do you need to protect your data against re-reading/re-writing by a third party? (security)>Maybe it is too much question and it does not reply to your question but if you need further details, please do not hesitate to contact me cause I am really interested in your application.>Anyway, I worked on a "look like" application for "post mail" and we designed a "rectangular PCB" (15cm x 4 cm) with several turns. Do not forget that antenna need to be tuned: big antenna are harder to tune sometimes.>Application was performing anticollision (up to 2 tags in the field), getting serial number and halting the chip.> >Best Regards,>Rodrigue GIL>Contactless Application Engineer >Infineon Technologies>Security & Chip Card ICs>Application Support>St.-Martin-Str. 76, D-81541 M黱chen>Tel.: +49-89-234-81105>Fax: +49-89-234-22308>mobile: +49-170-793-8372>Email: rodrigue.gil@infineon.com"><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: 103--></ul><!--end: 103--><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><p><!-- AnfangButton --><!-- EndeButton --><p><!-- AnfangLinie --><center><p><HR></p></center><!-- EndeLinie --><center>[ <a href="../index.htm">RFID-Bulletin Board</a> ]</center></blockquote><!-- Anfang BeitragsseitenFuss --><!-- Ende BeitragsseitenFuss --></body></html>⌨️ 快捷键说明
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