FreeLists / si-list / [SI-LIST] Re: PCB Trace Antenna

["Boopathy J." <boopathy_j@xxxxxxxxxxxx>]

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
>
>
>
>  
>


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