MRF377HR3_09 Datasheet, PDF (9/14 Pages) Freescale Semiconductor, Inc – RF Power Field-Effect Transistor N-Channel Enhancement-Mode Lateral MOSFET

TYPICAL DVBT OFDM BROADBAND CHARACTERISTICS
19
18
17 ^Gps
16
15
η_D
14
V_DD = 32 Vdc, P_out = 45 W (Avg.), I_DQ = 2000 mA
13
8K Mode DVBT OFDM
64 QAM Data Carrier Modulation
12
5 Symbols
11
10 _ACPR
9
420 480 540 600 660 720 780 840
f, FREQUENCY (MHz)
Figure 9. Single - Channel DVBT OFDM
Broadband Performance
40
35
30
25
20
−40
−45
−50
−55
−60
−65
900
19
18.5
18
560 MHz
660 MHz
17.5
860 MHz
17
470 MHz
V_DD = 32 Vdc, I_DQ = 2000 mA
8K Mode OFDM
64 QAM Data Carrier Modulation
5 Symbols
760 MHz
16.5
16
2
4 6 8 10
30
50
P_out, OUTPUT POWER (WATTS) AVG.
Figure 10. Single - Channel DVBT OFDM Broadband
Performance Power Gain versus Output Power
30
V_DD = 32 Vdc
25 ^{IDQ = 2000 mA}
8K Mode OFDM
64 QAM Data Carrier Modulation
20 _{5 Symbols}
15
10
560 MHz
470 MHz
660 MHz
860 MHz
760 MHz
5
0
10
100
P_out, OUTPUT POWER (WATTS) AVG.
Figure 11. Single - Channel DVBT OFDM
Broadband Performance Drain Efficiency versus
Output Power
−56
−58
470 MHz
−60 ^{660 MHz}
860 MHz
−62
V_DD = 32 Vdc
−64 ^IDQ ^{= 2000 mA}
8K Mode DVBT OFDM
−66
64 QAM
Data Carrier Modulation
5 Symbols
−68
10
760 MHz
560 MHz
−20
7.61 MHz
−30
−40
−50
−60
−70
−80
−90
4 kHz BW
−100
4 kHz BW
−110
100
−5 −4 −3 −2 −1 0 1 2 3 4 5
P_out, OUTPUT POWER (WATTS) AVG.
f, FREQUENCY (MHz)
Figure 12. Single - Channel DVBT OFDM Broadband Performance Figure 13. 8K Mode DVBT OFDM Spectrum
Adjacent Channel Power Ratio versus Output Power
RF Device Data
Freescale Semiconductor
MRF377HR3
9