AN4133 Datasheet, PDF (25/35 Pages) STMicroelectronics – Using the SPIRIT1 transceiver under ARIB STD-T108 in the 920 MHz band

AN4133
Permissible values for unwanted emission intensity
Figure 27. Low-power radio station emission in the 10 - 710 MHz bandwidth
Low-power radio station spurious emission 10 - 710 MHz
-20
Spirit
ARIB mask
-30
-40
-50
-60
-70
-80
-90
1.00E+07
1.10E+08
2.10E+08
3.10E+08
4.10E+08
Frequency [Hz]
5.10E+08
6.10E+08
7.10E+08
Figure 28. Low-power radio station emission in the 710 - 900 MHz bandwidth
Low-power radio station spurious emission 710 - 900 MHz
-50
Spirit
ARIB mask
-60
-70
7.10E+08
7.30E+08
7.50E+08
7.70E+08
7.90E+08
8.10E+08
Frequency [Hz]
8.30E+08
8.50E+08
8.70E+08
8.90E+08
Doc ID 023362 Rev 1
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