Dear Istvan, I need to Create an PCB trace antenna of F=13.5Mhz, Impedence=50 ohms, L=1.2uH. Now I need to determine PCB trace length (end to end), width of the trace etc. Is there is any calculator available to determine it?. Right Now we have a plan to complete the placement & routing of the board which will lie inside the loop antenna. Is it a right design to do it?? Otherwise, I need to Make two separate PCB (one for component & another one for loop antenna). Regards, Boopathy J -----Original Message----- From: Istvan Novak [mailto:istvan.novak@xxxxxxx] Sent: Thursday, September 22, 2005 5:19 PM To: Boopathy J. Cc: si-list@xxxxxxxxxxxxx Subject: Re: [SI-LIST] PCB Trace Antenna Boopathy, Not knowing the RF system parameters you have to achieve, just based on the stated frequency, you probably want to create a tuned loop antenna. In this case the trace impedance matters less, in fact you may want to increase it as much as possible. More will matter the size (and orientation) of loop and the number of turns. regards, Istvan novak SUN Microsystems Boopathy J. wrote: >Content-Type: text/plain; > charset="us-ascii" >Content-Transfer-Encoding: quoted-printable >HI, > > We are designing HF card Reader at f =13.56MHZ. > >we need to implement the Antenna In PCB traces. As I haven't worked = >much on > >RF PCB design, I would like to know how to implement it & > >how to determine the Trace length & impudence for 13.56MHz. > >=20 > >=20 > >Thanks In advance > >=20 > >Regards, > >Boopathy J > >=20 > > > > > -- Attached file included as plaintext by Ecartis -- -- File: disclaimer.txt ----------------------------------------------------------------------------------------------------------------------------- Disclaimer ----------------------------------------------------------------------------------------------------------------------------- "This message(including attachment if any)is confidential and may be privileged.Before opening attachments please check them for viruses and defects.MindTree Consulting Private Limited (MindTree)will not be responsible for any viruses or defects or any forwarded attachments emanating either from within MindTree or outside.If you have received this message by mistake please notify the sender by return e-mail and delete this message from your system. Any unauthorized use or dissemination of this message in whole or in part is strictly prohibited. Please note that e-mails are susceptible to change and MindTree shall not be liable for any improper, untimely or incomplete transmission." ----------------------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu