AP601
Frequency (MHz)
W-CDMA Ch. Power
Power Gain
Input Return Loss
Output Return Loss
ACLR
IMD3 @ +24 dBm PEP
Operating Current, Icc
Collector Efficiency
Output P1dB
Quiescent Current, Icq
Vpd, Vbias
Vcc
High Dynamic Range 1.8W 28V HBT Amplifier
869-960 Application Circuit (AP601-PCB900)
Typical WCDMA Performance at 25
°C
at a channel power of +24 dBm
880
940 Units
+24
+24 dBm
16.5 15.8
dB
8.9
14
dB
15
7.5
dB
-50
-50
dBc
-51
-51
dBc
54
52
mA
16.6
17
%
+32.5 +32.5 dBm
40
mA
+5
V
+28
V
V
PD
GND
V
BIAS
V
CC
C7
1000pF
3.3pF
See note 3
5.1 Ohm
C24
1.8pF
See note 4
15nH
See note 6
C26
0.5pF
See note 5
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 C1 is at 0.710” (29.1° @ 940 MHz) from the center of C24.
4. The center of C24 is placed at 0.285” (11.7°@ 940 MHz) from the edge of the AP601 (U1).
5. The center of C26 is placed at 0.055” (2.3° @ 940 MHz) from the edge of the AP601 (U1).
6. The center of L4 is at 0.095” (3.9° @ 940 MHz) from the center of C26.
7. The bold-faced RF trace is for the DC bias feed. The stub’s length is approximately a ¼
λ.
8. The main RF trace is cut at components L3 and L4 for this particular reference design.
869-960 MHz Application Circuit Performance Plots
Gain vs. Frequency
Vcc = 28V, Icq = 40 mA, 25
˚C
S11, S22 vs. Frequency
Vcc = 28V, Icq = 40 mA, 25
˚C
Efficiency vs. Output Power vs. Frequency
CW tone, Vcc = 28V, Icq = 40 mA, 25
˚C
18
17
S11, S22 (dB)
0
60
Collector Efficiency (%)
920 MHz
940 MHz
960 MHz
-5
-10
-15
-20
50
40
30
20
10
0
Gain (dB)
16
15
14
13
0.8
0.84
0.88
0.92
0.96
1
Frequency (GHz)
ACLR1 vs. Output Power vs. Frequency
WCDMA, Vcc = 28V, Icq = 40 mA, 25
˚C
S11
-25
0.8
0.85
0.9
0.95
1
1.05
S22
1.1
17
21
25
29
33
Frequency (GHz)
Output Power (dBm)
ACPR vs. Output Power vs. Frequency
IS-95A, 9 Ch. Fwd, 940 MHz, Vcc = 28V, Icq = 40 mA, 25
˚C
IMD vs. Output Power
CW 2-tone signal, 940 MHz,
∆f
= 1 MHz, 28V, 40 mA Icq, 25
˚C
-40
869 MHz
880 MHz
920 MHz
940 MHz
-40
IMD3L
IMD3U
-40
ACLR1 (dBc)
-45
IMD (dBc)
-50
ACPR (dBc)
894 MHz
960 MHz
IMD5
-50
-50
-60
-60
-55
WCDMA 3GPP Test Model 1+64DPCH,
60% clipping, PAR = 8.6 dB @ 0.01%
-60
16
18
20
22
24
26
-70
20
22
24
26
28
30
Output Power, PEP (dBm)
-70
17
19
21
23
25
27
Average Output Power (dBm)
Average Output Power (dBm)
Unconditionally stable circuit 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
WJ Communications, Inc
•
Phone 1-800-WJ1-4401
•
FAX: 408-577-6621
•
e-mail: sales@wj.com
•
Web site: www.wj.com
Page 4 of 10 May 2007 ver 1
WJCI [ WJ COMMUNICATION. INC. ]
