AR
C
HIVE INF
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O
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A
RCHIVE INFORMATION
6
RF Device Data
Freescale Semiconductor
MRF21085LR3 MRF21085LSR3
TYPICAL CHARACTERISTICS
-- 5 5
-- 5 0
-- 4 5
-- 4 0
-- 3 5
-- 3 0
-- 2 5
10
4
Figure 3. 2-Carrier W-CDMA ACPR, IM3, Power Gain and
Drain Efficiency versus Output Power
Figure 4. Intermodulation Distortion
Products versus Output Power
Pout, OUTPUT POWER (WATTS) PEP
Figure 5. Third Order Intermodulation
Distortion versus Output Power
IM3, THIRD ORDER
INTERMODULATION D
ISTORTION (dBc)
, DRAIN EFFICIENCY (%),
η
G
ps
, POWER GAIN (dB)
Pout, OUTPUT POWER (WATTS Avg.) N-CDMA
IM3 (dBc), ACPR (dBc)
f, FREQUENCY (MHz)
INPUT RETURN LOSS (dB)
, DRAIN EFFICIENCY (%)
η
Figure 6. 2-Carrier W-CDMA Broadband
Performance
Figure 7. CW Performance
0
5
10
15
20
25
30
-- 5 5
-- 5 0
-- 4 5
-- 4 0
-- 3 5
-- 3 0
-- 2 5
11030
4
VDD
=28Vdc,IDQ
= 1000 mA
f1 = 2135 MHz, f2 = 2145 MHz
3.84 MHz Channel Bandwidth
-- 4 5
-- 6 0
-- 5 0
-- 4 0
-- 3 0
-- 2 5
5
10
25
30
35
45
10
η
INTERMODULATION D
ISTORTION (dBc)
IMD,
Pout, OUTPUT POWER (WATTS) PEP
VDD
=28Vdc
IDQ
= 1000 mA
f1 = 2135 MHz
f2 = 2145 MHz
, DRAIN EFFICIENCY (%),
η
G
ps
, POWER GAIN (dB)
IM3 (dBc), ACPR (dBc), IRL,
1150 mA
1300 mA
1000 mA
IDQ
= 700 mA
850 mA
12
14
16
18
20
22
24
-- 6 0
-- 5 0
-- 4 0
-- 3 0
-- 2 0
-- 1 0
0
2090 21702110 2130 2150 2190
VDD
=28Vdc
Pout
=19W(Avg.)
IDQ
= 1000 mA
Gps
ACPR
η
IRL
Pout, OUTPUT POWER (WATTS)
G
ps
, POWER GAIN (dB)
11.5
12
12.5
13
13.5
14
14.5
0
10
20
30
40
50
60
2 13010 100
VDD
=28Vdc
IDQ
= 1000 mA
f = 2140 MHz
Gps
η
, DRAIN EFFICIENCY (%)
η
η
IM3
Gps
ACPR
15
100
-- 6 5
7th Order
5th Order
3rd Order
100
VDD
=28Vdc
f1 = 2135 MHz
f2 = 2145 MHz
IM3
40
34
35
36
37
38
-- 3 2
-- 3 1
-- 3 0
-- 2 9
-- 2 8
-- 2 7
24 25 26 27 28 29
VDD, DRAIN SUPPLY (V)
Figure 8. Two-Tone Intermodulation Distortion and
Drain Efficiency versus Drain Supply
INTERMODULATION D
ISTORTION (dBc)
IMD,
, DRAIN EFFICIENCY (%)
η
η
IDQ
= 1000 mA
f = 2140 MHz
10 MHz Tone Spacing
IMD
39
-- 2 6
Peak/Avg. = 8.3 dB @ 0.01% Probability(CCDF)
-- 5 5
-- 3 5
20
40
41
42
-- 2 5
-- 2 4
2-Carrier W-CDMA
10 MHz Carrier Spacing
3.84 MHz Channel Bandwidth
Peak/Avg. = 8.3 dB @ 0.01% Probability(CCDF)
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