
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 10 of 14 May 2007 ver 1
AP603
High Dynamic Range 7W 28V HBT Amplifier
2110-2170 MHz Application Circuit (AP603-PCB2140)
Typical WCDMA Performance at 25
°
C
at a channel power of +30 dBm
Frequency
W-CDMA Channel Power
Power Gain
Input Return Loss
Output Return Loss
ACLR
IMD3 @ +30 dBm PEP
Operating Current, Icc
Collector Efficiency
Output P1dB
Quiescent Current, Icq
Vpd, Vbias
Vcc
2140 MHz
+30 dBm
11.8 dB
10 dB
8.2 dB
-50 dBc
-51 dBc
246 mA
14.6 %
+38.2 dBm
160 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 C22 is placed at 0.185” (17.3
°
@ 2140 MHz) from the center of C1.
4. The center of C1 is placed at 0.860” (80.2
°
@ 2140 MHz) from the center of C5.
5. The center of C5 is placed at 0.085” (7.9
°
@ 2140 MHz) from the edge of the AP603 (U1).
6. The center of C23 is placed at 0.245” (22.9
°
@ 2140 MHz) from the edge of the AP603 (U1).
7. The center of C19 is placed at 0.475” (44.3
°
@ 2140 MHz) from the center of C23.
8. The bold-faced RF trace is for the DC bias feed. The stub’s length is approximately a
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
CW tone, Vcc = 28V, Icq = 160 mA, 25
C
7
8
9
10
11
12
30
32
34
36
38
40
Output Power (dBm)
G
2110 MHz
2140 MHz
2170 MHz
S11, S22 vs. Frequency
Vcc = 28V, Icq = 160 mA, 25
C
-25
-20
-15
-10
-5
0
2
2.05
2.1
2.15
2.2
2.25
2.3
Frequency (GHz)
S
S11
S22
Efficiency vs. Output Power vs. Frequency
CW tone, Vcc = 28V, Icq = 160 mA, 25
C
0
10
20
30
40
50
22
26
30
34
38
Output Power (dBm)
C
2110 MHz
2140 MHz
2170 MHz
ACLR1 vs. Output Power vs. Frequency
WCDMA, Vcc = 28V, Icq = 160 mA, 25
C
-65
-60
-55
-50
-45
-40
22
24
26
28
30
32
Average Output Power (dBm)
A
2110 MHz
2140 MHz
2170 MHz
Icc vs. Output Power vs. Frequency
WCDMA, Vcc = 28V, Icq = 160 mA, 25
C
150
175
200
225
250
275
300
22
24
26
28
30
32
Average Output Power (dBm)
C
2110 MHz
2140 MHz
2170 MHz
Efficiency vs. Output Power vs. Frequency
WCDMA, Vcc = 28V, Icq = 160 mA, 25
C
0
5
10
15
20
25
22
24
26
28
30
32
Average Output Power (dBm)
C
2110 MHz
2140 MHz
2170 MHz
Unconditionally stable circuit version of this application circuit is available for download off of the website at: http://www.wj.com
0.8pF
See note 3
See note 5
See note 6
See note 4
See note 7
V
B
V
P
G
V
C
W = 0.030”
L = 0.980”
C7
1000pF