NXP Semiconductors PN5180 - Fig 45. Test Signals for Type B, Comparison of Rxgain; Fig 46. Test Signals for Type B, Comparison of HPCF

NXP Semiconductors
AN11740
PN5180 Antenna design
AN11740
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Application note
COMPANY PUBLIC
Rev. 1.1 — 19 June 2018
345311
51 of 62
a. RxGain = 2; HPCF = 0
b. Green: LMA (RefPICC input)
c. Blue: TX_ACTIVE (Trigger)
d. Yellow: unfiltered Q-Channel
e. Orange: BPSK_SUM
f. RxGain = 3; HPCF = 0
g. Green: LMA (RefPICC input)
h. Blue: TX_ACTIVE (Trigger)
i. Yellow: unfiltered Q-Channel
j. Orange: BPSK_SUM
Fig 45. Test signals for Type B, comparison of RxGain
a. RxGain = 3; HPCF = 0
b. Green: LMA (RefPICC input)
c. Blue: TX_ACTIVE (Trigger)
d. Yellow: unfiltered Q-Channel
e. Orange: BPSK_SUM
f. RxGain = 2; HPCF = 3
g. Green: LMA (RefPICC input)
h. Blue: TX_ACTIVE (Trigger)
i. Yellow: unfiltered Q-Channel
j. Orange: BPSK_SUM
Fig 46. Test signals for Type B, comparison of HPCF
The RxGain should typically not be used with the maximum setting. The optimum
performance can typically be found the RxGain = 2.