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General question about antenna designing

I want to ask general question about antenna designing as I am designing antenna to be used with NRF52.

The picture attached with this message shows a printed antenna coil, which will be used for measurement of the magnetic field according to existing ISO Standards

Doc1.docx(/attachment/d75d3e6aa463f954c3b0cdd04274185f)

The magnetic field depends on the open circuit voltage at the connectors of the coil. This voltage will be measured with a high impedance probe on an oscilloscope. All values are peak-peak. It will be assumed, that the magnetic field is homogen over the area of the coil.

Frequency f = 13.56MHz

  • What is the area within the coil in
    mm² ?

  • What is the open circuit voltage in Vpp (Peak-Peak) for a magnetic field strength with the effective value of H = 1 A/m ?

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