Pages: [1]   Go Down
Author Topic: Extend RFID Read Range SM130  (Read 1062 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 19
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi Everyone,

Looking for suggestions on enhancing the read distance of SM130 module. The current read distance is 10cm. I would like to double or tripple this distance.

Using
SM130 13.56 MHz RFID Module - http://www.sparkfun.com/datasheets/Sensors/ID/SM130.pdf
RFID Evaluation Shield - 13.56MHz
Arduino Mega

Goal
Enhance read distance

One of the possibile solutions would be to add a power amplifier and attenuator/buffer between the antenna and the SM130 Module.

Example
SM130-->Power Amplifier -->Antenna --> Tag -->Antenna -->Attenuator/Buffer --> SM130

What do you think?
Logged

Massachusetts, USA
Offline Offline
Tesla Member
***
Karma: 212
Posts: 8967
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I think an antenna with more turns would produce a higher signal strength.
Logged

Send Bitcoin tips to: 1L3CTDoTgrXNA5WyF77uWqt4gUdye9mezN
Send Litecoin tips to : LVtpaq6JgJAZwvnVq3ftVeHafWkcpmuR1e

Offline Offline
Newbie
*
Karma: 0
Posts: 19
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Could I add an LNA to the receive input?
Logged

Massachusetts, USA
Offline Offline
Tesla Member
***
Karma: 212
Posts: 8967
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Could I add an LNA to the receive input?

I don't think so.  The antenna connection is for both output and input.  The RFID reader has to send power to the passive RFID card.  The LNA would help the receiver but would likely block the transmitter completely.  No power to the RFID card means no response.
Logged

Send Bitcoin tips to: 1L3CTDoTgrXNA5WyF77uWqt4gUdye9mezN
Send Litecoin tips to : LVtpaq6JgJAZwvnVq3ftVeHafWkcpmuR1e

Pages: [1]   Go Up
Jump to: