AP603
High Dynamic Range 7W 28V HBT Amplifier
1930-1990 MHz Application Circuit (AP603-PCB1960)
Typical WCDMA Performance at 25 °C
at a channel power of +30 dBm
Frequency
1960 MHz
+30 dBm
13 dB
W-CDMA Channel Power
Power Gain
Input Return Loss
Output Return Loss
ACLR
13 dB
C7
7.5 dB
1000pF
-49 dBc
-52 dBc
230 mA
15.5 %
IMD3 @ +30 dBm PEP
Operating Current, Icc
Collector Efficiency
Output P1dB
W = .030”
L = 1.035”
L3
+38.5 dBm
160 mA
+5 V
4.7nH
See note 3
100pF
100pF
Quiescent Current, Icq
Vpd, Vbias
C29
C5
3.3pF
C28
3.3pF
See note 5
1.2pF
See note 6
See note 4
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 L3 is placed at 0.115” (9.8° @ 1960 MHz) from the center of C5.
4. The center of C5 is placed at 0.100” (8.5° @ 1960 MHz) from the edge of the AP603 (U1).
5. The center of C28 is placed at 0.300” (25.6° @ 1960 MHz) from the edge of the AP603 (U1).
6. The center of C29 is placed at 0.420” (35.9° @ 1960 MHz) from the center of C28.
7. The bold-faced RF trace is for the DC bias feed. The stub’s length is approximately a ¼ λ.
L3
C5
C28
1930-1990 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 = 160 mA, 25 ˚C
Efficiency vs. Output Power vs. Frequency
CW tone, Vcc = 28V, Icq = 160 mA, 25 ˚C
CW tone, Vcc = 28V, Icq = 160 mA, 25 ˚C
50
40
30
20
10
0
14
13
12
11
10
9
0
-5
1930 MHz
1960 MHz
1990 MHz
-10
-15
-20
-25
1930 MHz
S11
S22
1960 MHz
1990 MHz
1.8
1.85
1.9
1.95
2
2.05
2.1
30
32
34
36
38
40
22
26
30
34
38
Frequency (GHz)
Output Power (dBm)
Output Power (dBm)
ACLR1 vs. Output Power vs. Frequency
Icc vs. Output Power vs. Frequency
WCDMA, Vcc = 28V, Icq = 160 mA, 25 ˚C
Efficiency vs. Output Power vs. Frequency
WCDMA, Vcc = 28V, Icq = 160 mA, 25 ˚C
WCDMA, Vcc = 28V, Icq = 160 mA, 25 ˚C
-40
-45
-50
-55
-60
-65
275
250
225
200
175
150
25
20
15
10
5
1930 MHz
1960 MHz
1990 MHz
1930 MHz
1960 MHz
1990 MHz
1930 MHz
1960 MHz
1990 MHz
0
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)
Unconditionally stable 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 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. ]
