QPD2731
2.5 – 2.7 GHz, 110ꢀWꢀ/ꢀ220ꢀW, 48ꢀV, Asymmetric Doherty
Carrier Amplifier – Power Matched Load Impedances
Frequency
(MHz)
Source
Impedance
5.49 – j8.71
Load
Impedance
18.88 + j2.58
Gain @ P3dB
(dB)
P3dB
(dBm)
51.1
Drain Efficiency
(%)
65.2
2500
16.5
2575
2600
2635
2700
6.68 – j7.36
6.37 – j7.32
7.40 – j6.76
4.44 – j5.88
14.44 + j4.37
15.55 + j7.60
15.02 + j4.29
10.20 + j7.54
17.1
16.6
17.7
16.6
51.0
51.1
51.0
51.1
63.1
61.3
69.3
60.4
Test conditions unless otherwise noted: VD1 = +48ꢀV, IDQ1 = 210ꢀmA, T = 25°C, Pulsed (10% duty cycle, 100ꢀµs width)
Carrier Amplifier – Efficiency Matched Load Impedances
Frequency
(MHz)
Source
Impedance
5.49 – j8.71
Load
Impedance
13.13 – j10.46
Gain @ P3dB
(dB)
P3dB
(dBm)
49.6
Drain Efficiency
(%)
80.5
2500
18.5
2575
2600
2635
2700
6.68 – j7.36
6.37 – j7.32
7.40 – j6.76
4.44 – j5.88
15.03 – j9.01
15.61 – j7.50
19.85 – j8.37
21.27 – j3.10
19.3
19.4
19.2
19.4
49.3
49.4
49.2
49.4
75.7
76.9
77.3
77.4
Test conditions unless otherwise noted: VD1 = +48ꢀV, IDQ1 = 210ꢀmA, T = 25°C, Pulsed (10% duty cycle, 100ꢀµs width)
Peaking Amplifier – Power Matched Load Impedances
Frequency
(MHz)
Source
Impedance
2.66 – j7.03
Load
Impedance
8.14 – j5.81
Gain @ P3dB
(dB)
P3dB
(dBm)
53.7
Drain Efficiency
(%)
65.3
2500
17.8
2575
2600
2635
2700
4.23 – j7.85
3.90 – j5.79
4.78 – j5.90
4.56 – j4.36
9.46 – j2.58
9.46 – j2.58
8.04 – j1.63
9.88 – j1.55
18.0
18.0
18.3
18.1
53.4
53.4
53.4
53.5
59.8
59.9
65.0
61.1
Test conditions unless otherwise noted: VD2 = +48ꢀV, IDQ2 = 410ꢀmA, T = 25°C, Pulsed (10% duty cycle, 100ꢀµs width)
Peaking Amplifier – Efficiency Matched Load Impedances
Frequency
(MHz)
Source
Impedance
2.66 – j7.03
Load
Impedance
3.17 – j7.23
Gain @ P3dB
(dB)
P3dB
(dBm)
51.7
Drain Efficiency
(%)
79.0
2500
20.2
2575
2600
2635
2700
4.23 – j7.85
3.90 – j5.79
4.78 – j5.90
4.56 – j4.36
4.46 – j6.85
4.46 – j6.85
5.07 – j6.85
4.01 – j7.91
21.3
21.5
21.5
22.3
51.4
51.3
51.5
49.5
73.4
73.9
73.2
78.9
Test conditions unless otherwise noted: VD2 = +48ꢀV, IDQ2 = 410ꢀmA, T = 25°C, Pulsed (10% duty cycle, 100ꢀµs width)
- 6 of 11 -
Rev. A
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