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Fma.1 · 2021-07-12

Hi,We tested the receiving sensitivity of the RFID reader evaluation kit ST25RU3993-HPEV, and the actual measurement is -66dBm, but the sensitivity given in each document is -77dBm.The sensitivity given here(-77dBm) is the sensitivity of the ST25RU39...

Fma.1 · 2021-08-17

Hi Bart,When the RX gain is 3dB and the distance between the tag and the reader is about 3.5m, the tag will respond briefly for about ten seconds, but when the distance is greater than 4m, the GUI displays no response.The dimensions of the microwave ...

Fma.1 · 2021-08-15

Hi Bart,Sorry,here is our latest test results.When the RX gain is 3dB, the receiving sensitivity is -63dBm, and the reading distance of the ISO standard tag is 3m.When the RX gain is 19dB, the receiving sensitivity is -79dBm, and the reading distanc...

Fma.1 · 2021-08-11

We measured the reading distance of the reader in the microwave anechoic chamber to only about 3 m. After the receiving sensitivity is increased to -77dBm, the reading distance of the tag remains the same. Why?Thanks.

Fma.1 · 2021-08-05

Dear Bart，I adjusted the RX gain to 19dBm, and the receiving sensitivity is indeed -77dBm. There is no LNA circuit in the receiving link, so where does the change of the RX gain play its role? In the ST25RU3993 chip data manual, it is said that the...

Fma.1 · 2021-08-01

The RX gain setting of the GUI during the test is the default setting.Is the measurement result -66dBm reasonable?Does the carrier�?cancellation circuit have any effect on the receiving gain?In addition, is there a more detailed document about the...

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ST25RU3993-HPEV sensitivity

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