AN4117

List of figures

Doc ID 023222 Rev 1

3/22

List of figures

Figure 1.

SPIRIT1 application daughterboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 2.

SPIRIT1 application daughterboard plugged into the motherboard . . . . . . . . . . . . . . . . . . . 5

Figure 3.

Daughterboard schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4.

Adjacent power measurement, 12.5 kHz narrowband channel spacing, 1.2 Kbps data rate,

1 kHz frequency deviation, 2-FSK modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5.

Adjacent power measurement, 12.5 kHz narrowband channel spacing, 2.4 Kbps data rate,

2.4 kHz frequency deviation, GFSK (BT=0.5) modulation . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 6.

Adjacent power measurement, 25 kHz narrowband channel spacing, 4.8 Kbps data rate,

2.4 kHz frequency deviation, GFSK (BT=0.5) modulation . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 7.

ETSI spectral mask measurement limits and sub-band edges. . . . . . . . . . . . . . . . . . . . . . 10

Figure 8.

Spectral mask measurement, 12.5 kHz narrowband channel spacing,1.2 Kbps data rate,

1 kHz frequency deviation, 2-FSK modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 9.

Spectral mask measurement, 12.5 kHz narrowband channel spacing, 2.4 Kbps data rate,

2.4 kHz frequency deviation, GFSK (BT=0.5) modulation . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 10.

Spectral mask measurement, 25 kHz narrowband channel spacing, 4.8 Kbps data rate,

2.4 kHz frequency deviation, GFSK (BT=0.5) modulation . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 11.

Spectral mask measurement, 100 kHz channel spacing, 38.4 Kbps data rate, 20 kHz

frequency deviation, GFSK (BT=1) modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 12.

Spectral mask measurement, 500 kHz channel spacing, 250 Kbps data rate, 127 kHz

frequency deviation, GFSK (BT=1) modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 13.

Unwanted emission in the spurious domain mask below 1 GHz . . . . . . . . . . . . . . . . . . . . 13

Figure 14.

Unwanted emission in the spurious domain mask above 1 GHz . . . . . . . . . . . . . . . . . . . . 13

Figure 15.

Sensitivity vs. data rate with 1% BER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 16.

RX blocking vs. CW interferer offset with 1% BER, 12.5 kHz channel . . . . . . . . . . . . . . . . 16

Figure 17.

RX blocking vs. CW interferer offset with 1% BER, 25 kHz channel . . . . . . . . . . . . . . . . . 16

Figure 18.

RX blocking vs. CW interferer offset with 1% BER, 100 kHz channel . . . . . . . . . . . . . . . . 17

Figure 19.

RX blocking vs. CW interferer offset with 1% BER, 500 kHz channel . . . . . . . . . . . . . . . . 17

Figure 20.

RX spurious radiation below 1 GHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 21.

RX spurious radiation above 1 GHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18