What is the typical range of the ST25RU3993 RFID reader?

[Bhargav]

Hi,

Am working on making a RFID reader using the ST25-EVAL kit. According to its user manual, it is capable of transmitting at 29dBm with external PA. I intend to use this with a 8dBi far field antenna. What is the typical distance my reader can detect tags, with such a setup?

Regards,

Bhargav

[Marcel Rossignol · Accepted solution]

Hi Bhargav,

the range also depends on the tag sensitivity.

Assumming a tag sensitivity of around -20dBm, the read range could be easisly around 15 meters.

The attached link-budget picture describes the relation between reader output power, reader sensitivity and tag sensitivity very well.

Best regards,

Marcel

[MSerr.1]

Hi Marcel,

could you provide the link-budget calculator you attach?

Best regards,

Max Serra

[Marcel Rossignol]

​Hi Max,

I am sorry to say that this calculator version cannot be shared. It was made just for internal use.

But we want to bring this calculator online in the eDesignSuite. Unfortunatly I do not know when this will happen.

Best regards,

Marcel