AP603
High Dynamic Range 7W 28V HBT Amplifier
2110-2170 MHz High Efficiency Reference Design
Targeted for Linearized Power Amplifiers
Typical WCDMA Performance at 25 °C
at a channel power of +32 dBm
Frequency
2140 MHz
+32 dBm
11.5 dB
20 dB
W-CDMA Channel Power
Power Gain
2.3 kΩ
Input Return Loss
Output Return Loss
ACLR
11 dB
C7
-34 dBc
170 mA
32.5 %
+38.5 dBm
40 mA
W = 0.030”
L = 0.980”
Operating Current, Icc
Collector Efficiency
Output P1dB
1000pF
C21
Quiescent Current, Icq
Vpd, Vbias
See note 4
+5 V
C28
3.6 pF
See note 6
C29
0.4 pF
See note 7
0.8pF
See note 3
3.6 pF
See note 5
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 0.185” (17.3° @ 2140 MHz) from the center of C1.
4. The center of C1 is placed at 0.875” (81.6° @ 2140 MHz) from the center of C5.
5. The center of C5 is placed at 0.070” (6.5° @ 2140 MHz) from the edge of the AP603 (U1).
6. The center of C28 is placed at 0.190” (17.7° @ 2140 MHz) from the edge of the AP603 (U1).
7. The center of C29 is placed at 0.300” (28.0° @ 2140 MHz) from the center of C28.
8. The bold-faced RF trace is for the DC bias feed. The stub’s length is approximately a ¼ λ.
2110-2170 MHz High Efficiency Application Circuit Performance Plots
DPD Correction vs ACLR vs. Output Power
WCDMA, 2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C
DPD Correction vs ACLR vs. Output Power
WCDMA, 2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C
DPD Correction vs ACLR vs. Output Power
WCDMA, 2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C
-30
-40
-50
-60
-70
-30
-40
-50
-60
-70
-30
-40
-50
-60
-70
Single-carrier WCDMA TM 1+64 DPCH,
No Clipping, PAR = 9.5 dB @ 0.01% CCDF
Single-carrier WCDMA TM 1+64 DPCH,
69% Clipping, PAR = 8.6 dB @ 0.01% CCDF
Single-carrier WCDMA TM 1+64 DPCH,
33% Clipping, PAR = 6.6 dB @ 0.01% CCDF
Uncorrected, Upper / Lower
Uncorrected, Upper / Lower
Uncorrected, Upper / Lower
DPD Corrected, Upper / Lower
DPD Corrected, Upper / Lower
DPD Corrected, Upper / Lower
22
24
26
28
30
32
22
24
26
28
30
32
22
24
26
28
30
32
Average Output Power (dBm)
Average Output Power (dBm)
Average Output Power (dBm)
Gain vs. Output Power
CW tone, 2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C
Icc vs. Output Power
2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C
Efficiency vs. Output Power
2140 MHz, Vcc = 28V, Icq = 40 mA, 25 ˚C
13
12
11
10
9
180
160
140
120
100
80
40
30
20
10
0
Single-carrier WCDMA TM 1+64 DPCH,
69% Clipping, PAR = 8.6 dB @ 0.01% CCDF
Single-carrier WCDMA TM 1+64 DPCH,
69% Clipping, PAR = 8.6 dB @ 0.01% CCDF
8
60
20
24
28
32
36
40
22
24
26
28
30
32
22
24
26
28
30
32
Output Power (dBm)
Average Output Power (dBm)
Average Output Power (dBm)
Specifications and information are subject to change without notice
Page 13 of 14 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
WJCI [ WJ COMMUNICATION. INC. ]
