Selected articles for topic: 125khz rfid antenna inductance
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Designing an RFID antenna - Hackster.io
Designing an RFID antenna:
Basically I am motivated to replace the antenna on this RFID reader. The reader is really cheap, and fits my porpoise, its recognized as a USB keyboard.
My Idea is to build a new antenna that can be fitted into a PVC tube and have a usb "reading rod". Basically I want to make a new coil with copper cable which area is a rectangle instead of a square.
Hackaday has provided me with some information about this, but nothing useful about antenna modding.
Animal tag and RFID reader/writer module - Priority 1 Design
(*1) For animal identification transponders:� Destron, Datamars and Trovan transponder technologies are not supported.
(*2) Reading range indicated is based on connection of our RFIDCOIL-49A antenna. Reading range may increase
or decrease depending on the specifications of the antenna attached,�transponder type,and power supply conditions.
About FDX-B and HDX animal identification.
Date: 2013-05-09 00:43:54
125kHz RFID Reader Design – Electronic Product Design
RFID Circuit & PCB Design Notes
It's usually very important that the voltage supply to an RFID reader is protected from ripple and interference.
Where you have noisy electronics in the proximity:
A simple RC filter of 10R and 1000uF will go a long way to preventing interference. Better still is using a separate power supply from a dedicated voltage regulator if you have the option.
Use a star...