
Specifications and information are subject to change without notice
WJ Communications, Inc
Phone 1-800-WJ1-4401
FAX: 408-577-6621
e-mail: sales@wj.com
Web site: www.wj.com
Page 9 of 10 May 2007 ver 1
AP601
High Dynamic Range 1.8W 28V HBT Amplifier
2320-2380 MHz WiBro Application Circuit
Typical WCDMA Performance at 25
°
C
at a channel power of +23 dBm
Frequency
W-CDMA Channel Power
Power Gain
ACLR
Operating Current, Icc
Collector Efficiency
Output P1dB
Quiescent Current, Icq
Vpd, Vbias
Vcc
2350 MHz
+23 dBm
14 dB
-50 dBc
50 mA
14 %
+32.5 dBm
40 mA
+5 V
+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 C3 is placed at 0.050” (5.1
°
@ 2.35 GHz) from the edge of the AP601 (U1).
4. The center of C19 is placed at 0.650” (66.6
°
@ 2.35 GHz) from the edge of the AP601 (U1).
5. The center of C30 is placed at 0.110” (11.3
°
@ 2.35 GHz) from the center of C19.
6. The center of C31 is placed at 0.040” (4.1
°
@ 2.35 GHz) from the center of C19.
7. The bold-faced RF trace is for the DC bias feed. The stub’s length is approximately a
λ
.
2320-2380 MHz Application Circuit Performance Plots
Gain vs. Output Power vs. Frequency
CW tone, Vcc = 28V, Icq = 40 mA, 25
C
10
11
12
13
14
15
22
24
26
28
30
32
34
Output Power (dBm)
G
2320 MHz
2350 MHz
2380 MHz
Efficiency vs. Output Power vs. Frequency
CW tone, Vcc = 28V, Icq = 40 mA, 25
C
0
10
20
30
40
50
60
22
24
26
28
30
32
34
Output Power (dBm)
C
2320 MHz
2350 MHz
2380 MHz
ACLR1 vs. Output Power vs. Frequency
Vcc = 28V, Icq = 40 mA, 25
C
-60
-55
-50
-45
-40
20
21
22
23
24
25
Average Output Power (dBm)
A
2320 MHz
2350 MHz
2380 MHz
WCDMA 3GPP TM 1+64DPCH,
60% clipping, PAR = 8.6 dB
EVM vs. Output Power
Vcc = 28V, Icq = 40 mA, 25
C, 2350 MHz
0.0
0.5
1.0
1.5
2.0
2.5
3.0
20
21
22
23
24
25
Output Power (dBm)
E
WCDMA 3GPP TM 1+64DPCH,
60% clipping, PAR = 8.6 dB
Efficiency vs. Output Power vs. Frequency
WCDMA, Vcc = 28V, Icq = 40 mA, 25
C
0
5
10
15
20
25
20
21
22
23
24
25
Average Output Power (dBm)
C
2320 MHz
2350 MHz
2380 MHz
WCDMA 3GPP TM 1+64DPCH,
60% clipping, PAR = 8.6 dB
C3
1.6pF
See note 3
V
B
V
P
G
V
C
C30
0.2pF
See note 5
C7
1000pF
C32
22pF
W = .030”
L = .590”
C31
1.1pF
See note 6
C19
0.6pF
See note 4
22pF
22pF
C33
C34
C31
C30
C19
C32 C33 C34