PDA

View Full Version : Desiging Rfid reader

vijbele
Jan14-10, 03:51 PM
Hi to all, I am looking for suggestions and help

I already have Rsk board (TRH031M reader for 13.56MHz rfid, ISO 14442A)

i am planing to design or build a Rfid reader using RFID tags(ISO 14442A).

I am looking at building the small transformer that links rfid reader. I need some suggestion and ideas...........!
berkeman
Jan14-10, 06:01 PM
Hi to all, I am looking for suggestions and help

I already have Rsk board (TRH031M reader for 13.56MHz rfid, ISO 14442A)

i am planing to design or build a Rfid reader using RFID tags(ISO 14442A).

I am looking at building the small transformer that links rfid reader. I need some suggestion and ideas...........!

When you say transformer, do you mean the antenna?

TRH031M info (some in Korean) http://www.3alogics.com/

Google search on 13.56MHz RFID antenna: http://www.google.com/search?hl=en&rlz=1T4GGLL_enUS301US302&ei=TLBPS4fDEIiIsgPN6fjYBw&sa=X&oi=spell&resnum=0&ct=result&cd=1&ved=0CA0QBSgA&q=13.56MHz+rfid+antenna&spell=1

.
berkeman
Jan14-10, 06:06 PM
The first hit on that Google hit list is pretty good, and addresses the antenna aspects pretty well:

http://www.melexis.com/Asset/1356MHz_RFID_systems_and_antennas_design_guide_Dow nloadLink_3929.aspx

.
vijbele
Jan15-10, 05:21 AM
Thanks for the reply, well i need to relate the transformer to make reader. why the coupling of a passive HF-RFID tag can fundamentally be modelled using transformer theory
vijbele
Jan15-10, 05:28 AM
Aim of the mini project is to design a reader that detects the 13.56 Mhz tags by simple transformer theory
berkeman
Jan15-10, 12:05 PM
Have you read the link in my post #3? Do you have any specific questions about it?
vijbele
Jan17-10, 09:14 AM
Well, it was the usefull information.. now i need to design a antenna coil, which should make up resonance frequency 13.56 MHz. if possible can you suggest any site or design.. to make antenna coils.
berkeman
Jan18-10, 04:18 PM
Well, it was the usefull information.. now i need to design a antenna coil, which should make up resonance frequency 13.56 MHz. if possible can you suggest any site or design.. to make antenna coils.

Have you read through the Google search hit list that I posted in Post #2? There appeared to be a number of useful sites.