This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TRF7970A: Reading distance using 13 MHz versus 134 kHz

Part Number: TRF7970A
Other Parts Discussed in Thread: TMS3705, UCC27424-Q1

Hi

I have tested an evaluation kit for TRF7970A.

My application is a control panel with some push buttons.

The operator must have a wristwatch tag or even better a tag in his pocket to use the panel.

The user shall not need to push a button on the "tag" to open up the control panel.

If the operator is more than 5 meters away from the panel it shall not be active.

No security is needed. Any tag is OK.

 

The maximum size of the antenna is 135x65 mm.

With wristwatch tag and TRF7970A evaluation module the reading distance is in the range of 50 mm. Increasing the antenna will not solve the task.

Is it possible to use TMS3705 with UCC27424-Q1?

What other solutions?

Best Regards

Goran