AP601
Frequency
W-CDMA Channel Power
Power Gain
ACLR
Operating Current, Icc
Collector Efficiency
Output P1dB
Quiescent Current, Icq
Vpd, Vbias
Vcc
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
2350 MHz
+23 dBm
14 dB
-50 dBc
50 mA
14 %
+32.5 dBm
40 mA
+5 V
+28 V
22pF
C3
1.6pF
See note 3
V
PD
GND
V
BIAS
V
CC
C34
C7
1000pF
W = .030”
L = .590”
C33
C32
22pF
C19
0.6pF
See note 4
C30
0.2pF
See note 5
C31
1.1pF
See note 6
22pF
C32 C33 C34
C31
C30
C19
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 ¼
λ.
2320-2380 MHz Application Circuit Performance Plots
Gain vs. Output Power vs. Frequency
CW tone, Vcc = 28V, Icq = 40 mA, 25
˚C
Efficiency vs. Output Power vs. Frequency
CW tone, Vcc = 28V, Icq = 40 mA, 25
˚C
15
60
Collector Efficiency (%)
2320 MHz
2350 MHz
2380 MHz
14
50
40
30
20
10
0
Gain (dB)
13
12
2320 MHz
11
10
22
2350 MHz
2380 MHz
24
26
28
30
32
34
22
24
26
28
30
32
34
Output Power (dBm)
ACLR1 vs. Output Power vs. Frequency
Vcc = 28V, Icq = 40 mA, 25
˚C
Output Power (dBm)
EVM vs. Output Power
Vcc = 28V, Icq = 40 mA, 25
˚C,
2350 MHz
Efficiency vs. Output Power vs. Frequency
WCDMA, Vcc = 28V, Icq = 40 mA, 25
˚C
2320 MHz
2.5
Collector Efficiency (%)
-40
2350 MHz
3.0
25
2320 MHz
20
15
10
5
0
2350 MHz
2380 MHz
ACLR1 (dBc)
-45
EVM (%)
2380 MHz
2.0
1.5
1.0
0.5
0.0
WCDMA 3GPP TM 1+64DPCH,
60% clipping, PAR = 8.6 dB
-50
-55
WCDMA 3GPP TM 1+64DPCH,
60% clipping, PAR = 8.6 dB
WCDMA 3GPP TM 1+64DPCH,
60% clipping, PAR = 8.6 dB
-60
20
21
22
23
24
25
20
21
22
23
24
25
20
21
22
23
24
25
Average Output Power (dBm)
Output Power (dBm)
Average Output Power (dBm)
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
WJCI [ WJ COMMUNICATION. INC. ]
