AP603
High Dynamic Range 7W 28V HBT Amplifier
920-960 MHz Application Circuit (AP603-PCB900)
Typical WCDMA Performance at 25 °C
at a channel power of +30 dBm
Frequency
940 MHz
+30 dBm
17 dB
W-CDMA Channel Power
Power Gain
Input Return Loss
Output Return Loss
ACLR
11 dB
C7
5.5 dB
1000pF
-52 dBc
-52 dBc
217 mA
16.6 %
+38.5 dBm
160 mA
+5 V
IMD3 @ +30 dBm PEP
Operating Current, Icc
Collector Efficiency
Output P1dB
1.8 Ohm
See note 5
Quiescent Current, Icq
Vpd, Vbias
5.6pF
See note 3
See note 4
See note 6
Vcc
+28 V
Notes:
1. The primary RF microstrip line is 50 Ω.
2. Components shown on the silkscreen but not on the schematic are not used.
3. The center of C24 is placed at 0.245” (10.0° @ 940 MHz) from the center of C5.
4. The center of C5 is placed at .060” (2.5° @ 940 MHz) from the edge of the AP603 (U1).
5. The center of L4 is placed at 0.170” (7.0° @ 940 MHz) from the edge of the AP603 (U1). L4
is required to be an AVX 0805 type.
6. The center of C25 is placed at 0.480” (19.7° @ 940 MHz) from the center of L4.
7. The bold-faced RF trace is for the DC bias feed. The stub’s length is approximately a ¼ λ.
8. The main RF trace is cut at component L3 and L4 for this particular reference design.
L3
C5
920-960 MHz Application Circuit Performance Plots
W-CDMA 3GPP Test Model 1+64 DPCH, 60% clipping, PAR = 8.6 dB @ 0.01% Probability, 3.84 MHz BW
Efficiency vs. Output Power vs. Frequency
Gain vs. Output Power vs. Frequency
S11, S22 vs. Frequency
CW tone, Vcc = 28V, Icq = 160 mA, 25 ˚C
CW tone, Vcc = 28V, Icq = 160 mA, 25 ˚C
Vcc = 28V, Icq = 160 mA, 25 ˚C
50
40
30
20
10
0
18
17
16
15
14
13
0
-5
920 MHz
940 MHz
960 MHz
-10
-15
-20
-25
920 MHz
S11
S22
940 MHz
960 MHz
0.8
0.85
0.9
0.95
1
1.05
1.1
14
18
22
26
30
34
38
30
32
34
36
38
40
Frequency (GHz)
Output Power (dBm)
Output Power (dBm)
ACLR1 vs. Output Power vs. Frequency
IMD vs. Output Power
Efficiency vs. Output Power vs. Frequency
CW 2-tone signal, 940 MHz, ∆f = 1 MHz, 28V, 160 mA Icq, 25 ˚C
WCDMA, Vcc = 28V, Icq = 160 mA, 25 ˚C
WCDMA, Vcc = 28V, Icq = 160 mA, 25 ˚C
-40
-45
-50
-55
-60
-65
25
20
15
10
5
-50
-55
-60
-65
-70
-75
920 MHz
940 MHz
960 MHz
920 MHz
940 MHz
960 MHz
IMD3L
IMD3U
IMD5
0
26
28
30
32
34
36
22
24
26
28
30
32
22
24
26
28
30
32
Average Output Power (dBm)
Output Power, PEP (dBm)
Average Output Power (dBm)
Specifications and information are subject to change without notice
Page 5 of 14 May 2007 ver 1
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