PN7462 family Quick Start Guide - Development Kit
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© NXP B.V. 2018. All rights reserved.
User manual
COMPANY PUBLIC
Rev. 1.6 — 14 May 2018
319816
Fig 27. Default 65x65 antenna matching diagram – symmetrical
The antenna connection uses the standard tuning circuit Fig 10. The EMC filter is
typically a second order low pass filter as shown in Fig 18, and contains an inductor (L0)
and a capacitor (C0). The cut off frequency defines the overall detuning behavior as well
as the transfer function of the antenna circuit. For symmetrical (DPC) tuning, EMC filter is
designed with a cut off frequency of f
EMC
= 14,8 MHz, and the antenna impedance is
tuned to Z = 20Ω.
(4) Standard tuning circuit
Fig 28. Matching circuit principle
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