FP1189-RFID Datasheet, PDF (9/12 Pages) WJ Communication. Inc. – 1/2 - Watt HFET

FP1189
½ - Watt HFET
Product Information
Reference Design: 2450 MHz
The application circuit is matched for output power.
Typical RF Performance, 25°C
Frequency
MHz 2450 2450
S21 – Gain
dB
13.2
S11 – Input Return Loss
dB
-36
S22 – Output Return Loss dB
-7.6
Output P1dB
dBm +27.5 +28.1
Output IP3
(+12 dBm / tone, 1 MHz spacing)
dBm +38 +40
Drain Voltage
V
+8
+8
Drain Current
mA 100 125
S-Parameters
15
10
5
DB(|S[1,1]|)
DB(|S[2,1]|)
DB(|S[2,2]|)
0
-5
-10
-15
-20
-25
The 2450 MHz Reference Circuit is shown for design purposes only. An
-30
2200
2300
2400
2500
2600
2700
evaluation board is not readily available for this application. The reader can
Frequency (MHz)
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.
Vds = 8 V @ 125 mA
-Vgg
RES
ID=R1
R=100 Ohm
CAP
I D =C3
C=33 pF
CAP
I D =C2
C=DNP pF
CAP
I D =C8
C=100000 pF
CAP
I D =C6
C=DNP pF
CAP
I D =C7
C=22 pF
PORT
P= 1
Z=50 Ohm
CAP
I D =C1
C=22 pF
CAP
I D =C4
C=1.2 pF
IND
ID=L1
L=18 nH
TLINP
I D =T L 1
Z0=50 Ohm
L=135 mil
Eeff=4.2
Loss=0
F0=0 MHz
RES
I D =R2
R=10 Ohm
2
1
TLINP
I D =TL3
Z0=50 Ohm
L=80 mil
Eeff=4.2
L o s s =0
F0=0 MHz
IND
I D =L3
L=1.8 nH
TLINP
I D =TL4
Z0=50 Ohm
L=35 mil
Eeff=4.2
L o s s =0
F0=0 MHz
TLINP
I D =TL2
Z 0 =50 Ohm
L=45 mil
Eeff=4.2
L o s s =0
F 0 =0 MHz
SUBCKT
I D =Q1
N E T ="FP1189"
The lengths shown in the microstrip lines are referenced from the component or pin edge-to-edge.
IND
I D =L2
L=18 nH
PORT
P= 2
Z=50 Ohm
CAP
I D =C5
C =0.5 pF
CAP
I D =C7
C=22 pF
Bill of Materials
Ref. Desig.
Value
Part style
Size
C1, C7, C9
22 pF
Chip capacitor
0603
C3
33 pF
Chip capacitor
0805
C4
1.2 pF Chip capacitor
0603
C5
0.5 pF Chip capacitor
0603
C8
0.1 µF Chip capacitor
1206
L1, L2
18 nH
Multilayer chip inductor
0603
L3
1.8 nH Multilayer chip resistor
0603
R1
100 O
Chip resistor
0603
C4
R2
10 O
Chip resistor
0603
Q1
FP1189 WJ 0.5W HFET
SOT-89
C2, C4, C6, C11
Do Not Place
14 mil GETEK^TM ML200DSS (er = 4.2)
The main microstrip line has a line impedance of 50 O.
Specifications and information are subject to change without notice.
WJ Communications, Inc • Phone 1-800- WJ1-4401 • FAX: [phone] • e- mail: [e-mail] • Web site: www.wj.com
September 2004