NXP Semiconductors
AN12550
PNEV5190B evaluation board quick start guide
1. 45 mm x 45 mm antenna coil connected to J10
Figure 10. PNEV5190B antenna circuit
The PN5190 antenna tuning (see
) improves the transfer function compared to
the standard “asymmetrical” tuning and therefore allows using a higher system Q factor,
which results in a higher field strength. The disadvantage of the loading effect, which
causes an increased current ITVDD, is compensated with the PN5190 Dynamic Power
Control (DPC, for details refer to
). For more details on the PN5190 antenna tuning,
refer to
PN5190 Antenna design guide.
Figure 11. PNEV5190B evaluation board antenna tuning
AN12550
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Application note
Rev. 1.5 — 23 April 2021
COMPANY PUBLIC
562315
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