AP601
High Dynamic Range 1.8W 28V HBT Amplifier
2110-2170 MHz Application Circuit (AP601-PCB2140)
Typical WCDMA Performance at 25 °C
at a channel power of +24 dBm
Frequency
2140 MHz
+24 dBm
13.5 dB
12 dB
W-CDMA Channel Power
Power Gain
Input Return Loss
Output Return Loss
ACLR
8 dB
-51 dBc
-55 dBc
52 mA
17 %
C7
IMD3 @ +24 dBm PEP
Operating Current, Icc
Collector Efficiency
Output P1dB
1000pF
+32.5 dBm
40 mA
+5 V
Quiescent Current, Icq
Vpd, Vbias
3,3pF
C22 See note 4
1.2pF
C19
1.8pF
See note 6
C5
2.4pF
See note 5
See note 3
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 C22 is placed at 0.090” (8.4° @ 2140 MHz) from the center of C1.
4. The center of C1 is placed at 0.910” (84.9° @ 2140 MHz) from the center of C5.
5. The center of C5 is placed at 0.100” (9.3° @ 2140 MHz) from the edge of the AP601 (U1).
6. The center of C19 is placed at 0.760” (70.9° @ 2140 MHz) from the edge of the AP601 (U1).
7. The bold-faced RF trace is for the DC bias feed. The stub’s length is approximately a ¼ λ.
2110-2170 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
Gain vs. Output Power vs. Frequency
S11, S22 vs. Frequency
Vcc = 28V, Icq = 40 mA, 25 ˚C
Efficiency vs. Output Power vs. Frequency
CW tone, Vcc = 28V, Icq = 40 mA, 25 ˚C
CW tone, Vcc = 28V, Icq = 40 mA, 25 ˚C
14
13
12
11
10
9
0
-5
50
40
30
20
10
0
2110 MHz
2140 MHz
2170 MHz
-10
-15
-20
-25
2110 MHz
S11
S22
2140 MHz
2170 MHz
2
2.05
2.1
2.15
2.2
2.25
2.3
12
16
20
24
28
32
22
24
26
28
30
32
Frequency (GHz)
Output Power (dBm)
Output Power (dBm)
ACLR1 vs. Output Power vs. Frequency
Icc vs. Output Power vs. Frequency
WCDMA, Vcc = 28V, Icq = 40 mA, 25 ˚C
ACLR1 vs. Output Power vs. Vcc
WCDMA, Icq = 40 mA, 2140 MHz, 25 ˚C
WCDMA, Vcc = 28V, Icq = 40 mA, 25 ˚C
-35
-40
-45
-50
-55
-60
65
60
55
50
45
40
-35
-40
-45
-50
-55
-60
26 V
28 V
30 V
32 V
2110 MHz
2140 MHz
2170 MHz
2110 MHz
2140 MHz
2170 MHz
16
18
20
22
24
26
16
18
20
22
24
26
16
18
20
22
24
26
Average Output Power (dBm)
Average Output Power (dBm)
Average Output Power (dBm)
Unconditionally stable circuit version of this application circuit is available for download off of the website at: http://www.wj.com
Specifications and information are subject to change without notice
Page 6 of 10 May 2007 ver 1
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com