FP1189
½ - Watt HFET
Product Information
Reference Design: 2450 MHz
The application circuit is matched for output power.
Typical RF Performance, 25°C
S-Parameters
15
10
5
Frequency
MHz
dB
2450
2450
S21 – Gain
13.2
-36
DB(|S[1,1]|)
DB(|S[2,1]|)
DB(|S[2,2]|)
S11 – Input Return Loss
dB
0
S22 – Output Return Loss
Output P1dB
dB
-7.6
-5
dBm
+27.5 +28.1
-10
-15
-20
-25
-30
Output IP3
dBm
+38
+40
(+12 dBm / tone, 1 MHz spacing)
Drain Voltage
Drain Current
V
+8
+8
mA
100
125
The 2450 MHz Reference Circuit is shown for design purposes only. An
evaluation board is not readily available for this application. The reader can
obtain an FP1189-PCB2140S evaluation board and modify it with the circuit
shown to achieve the performance shown in this reference design. Only two
component changes are required (C4 and L3) from the FP1189-PCB2140S
evaluation board.
2200
2300
2400
2500
2600
2700
Frequency (MHz)
Vds = 8 V @ 125 mA
-Vgg
CAP
CAP
ID=C8
ID=C3
C=100000 pF
C=33 pF
RES
ID=R1
CAP
ID=C6
R=100 Ohm
C=DNP pF
CAP
ID=C2
CAP
C=DNP pF
ID=C7
C=22 pF
TLINP
TLINP
TLINP
ID=TL4
ID=TL1
ID=TL3
IND
Z0=50 Ohm
L=135 mil
Eeff=4.2
Loss=0
F0=0 MHz
Z0=50 Ohm
L=80mil
Eeff=4.2
Loss=0
F0=0 MHz
Z0=50 Ohm
L=35 mil
Eeff=4.2
Loss=0
F0=0 MHz
IND
ID=L1
ID=L2
L=18 nH
IND
CAP
L=18 nH
2
PORT
P=1
Z=50 Ohm
RES
PORT
P=2
Z=50 Ohm
ID=C1
ID=L3
ID=R2
C=22 pF
L=1.8 nH
R=10 Ohm
1
TLINP
ID=TL2
Z0=50Ohm
L=45 mil
Eeff=4.2
Loss=0
F0=0 MHz
CAP
ID=C7
CAP
CAP
ID=C4
C=1.2 pF
C=22 pF
ID=C5
C =0.5 pF
SUBCKT
ID=Q1
NET="FP1189"
The lengths shown in the microstrip lines are referenced from the component or pin edge-to-edge.
Bill of Materials
Part style
Ref. Desig.
C1, C7, C9
C3
C4
C5
C8
L1, L2
L3
Value
22 pF
33 pF
1.2 pF
0.5 pF
0.1 mF
18 nH
1.8 nH
100 O
10 O
Size
0603
Chip capacitor
Chip capacitor
Chip capacitor
Chip capacitor
Chip capacitor
Multilayer chip inductor
Multilayer chip resistor
Chip resistor
0805
0603
0603
1206
0603
0603
0603
0603
R1
R2
Chip resistor
C4
Q1
FP1189
WJ 0.5W HFET
Do Not Place
SOT-89
C2, C4, C6, C11
14 mil GETEKTM ML200DSS (er = 4.2)
The main microstrip line has a line impedance of 50 O.
Specifications and information are subject to change without notice.
September 2004
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. ]
