AP501
The Communications Edge
TM
Product Information
PCS-band 4W HBT Amplifier Module
Performance Graphs – Class B Configuration
The AP501 can be adjusted to operate at lower current biasing levels by modifying the R7 resistor for improved efficiency
performance. The configuration shown on this page has the AP501 operating with Icq = 250 mA (Icc = 400 mA @ 27 dBm).
Output L-C matching components have been added externally on the circuit to optimize the amplifier for ACPR performance at
this biasing configuration.
+12V
GND
+12V
10μF
DNP
+5V
DNP
0Ω
730Ω
DNP
100pF
.01μF
DNP
RF IN
0Ω
DNP
DNP
6
.01μF
DNP
100pF
RF OUT
2.2nH
5
4
3
2
1
DNP
R2
0.2pF
Notes:
1. Please note that for reliable operation, the evaluation board will have to
be mounted to a much larger heat sink during operation and in laboratory
environments to dissipate the power consumed by the device. The use of
a convection fan is also recommended in laboratory environments.
Details of the mounting holes used in the WJ heatsink are given on the
last page of this datasheet.
2. The area around the module underneath the PCB should not contain any
soldermask in order to maintain good RF grounding.
3. For proper and safe operation in the laboratory, the power-on sequencing
should be followed:
a. Connect RF In and Out
b. Connect the voltages and ground pins as shown in the circuit.
c. Apply the RF signal
d. Power down with the reverse sequence
Narrowband S-Parameters
+25 °C, Icq=250mA
PAE / Icc vs. Output Power
+25 °C, 1960 MHz, Icq=250mA
OIP3 / IMD vs. Output Power
50%
31
30
S 2 1 (d B )
29
28
27
26
1930
0
-5
S 1 1 , S 2 2 (d B )
500
-20
-30
P A E (d B m )
+25 °C, 1960 MHz, Icq=250mA
55
50
45
40
35
O IP 3 (d B m )
Icc
400
PAE
40%
IM D (d B c )
Ic c (m A )
-10
S21
S11
-15
S22
-20
-25
1990
300
200
100
0
24
25
26
27
28
29
30
Output Power (dBm)
30%
20%
10%
0%
-40
-50
-60
IMD
-70
22
24
26
28
30
Output Power / tone (dBm)
ACLR vs. Channel Power
OIP3
30
1950
1970
Frequency (MHz)
ACPR vs. Channel Power
ACPR vs. Channel Power
+25 °C, IS-95A, 9 Ch. Fwd, 7FA, fo=1935 MHz, Icq=250mA
-40
+25 °C, IS-95A, 9 Ch. Fwd, 1FA, fo=1960 MHz, Icq=250mA
±885 kHz
-40
-40
+25 °C, 3GPP W-CDMA, Test Model 1+32 DPCH, 1960 MHz, Icq=250mA
±885 kHz
A C P R (d B c )
A C L R (d B c )
A C P R (d B c )
-50
±1.25 MHz
-50
±1.25 MHz
±5 MHz
±10 MHz
-50
-60
-60
-60
-70
25
26
27
28
29
30
31
Output Channel Power (dBm)
-70
18
19
20
21
22
23
24
25
Output Channel Power (dBm)
-70
20
21
22
23
24
25
26
27
28
Output Channel 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 3 of 5 February 2006
WJCI [ WJ COMMUNICATION. INC. ]
