FP31QF_06 Datasheet, PDF (3/12 Pages) WJ Communication. Inc. – 2-Watt HFET

FP31QF
2-Watt HFET
The Communications Edge ^TM
Product Information
Application Circuit: 870 – 960 MHz (FP31QF-PCB900)
The application circuit is matched for output power.
Typical RF Performance
Drain Bias = +9 V, I_ds = 450 mA, 25 °C
Frequency
MHz 870 915
S21 – Gain
dB 18.3 18
S11 – Input Return Loss
dB -15 -20
S22 – Output Return Loss dB -9.3 -12
Output P1dB
dBm +33.9 +34
Output IP3
dBm
+46
(+18 dBm / tone, 1 MHz spacing)
Noise Figure
dB 3.4 3.5
IS-95 Channel Power
@ -45 dBc ACPR
dBm
+27.8
960
17.7
-16
-16
+33.7
3.5
C2
C3
Circuit Board Material: .014” FR-4 (εr = 4.6),
4 layers (other layers added for rigidity), .062” total thickness, 1 oz copper
The main microstrip line has a line impedance of 50 Ω.
Ref. Desig.
C1, C4, C8, C10
C2, C3
C7, C11
C12
L1, L2
L3
R1
R2
Q1
C5, C6
Bill of Materials
Value
Part style
100 pF
Chip capacitor
4.7 pF
Chip capacitor
1000 pF Chip capacitor
0.1 µF
Chip capacitor
27 nH
Wirewound chip inductor
3.3 nH
Multilayer chip inductor
10 Ω
Chip resistor
51 Ω
Chip resistor
FP31QF WJ 2W HFET
Do Not Place
Size
0603
0603
0603
1206
0805
0603
0603
0603
QFN 6x6
• The C2 and C3 placements are at silk screen markers, “H” and “9.5”, respectively.
• The via hole spacing along the main microstrip line is .040”.
• The distance from the edge of the FP31QF to the closer edge of L3 is .305”.
• The transmission line lengths shown in the schematic are from the FP31QF
device edge to the component edge.
ID=C1
C=100 pF
TLINP
ID=TL1
Z0=50 Ohm
L=500 mil
Eeff=3.46
Loss=0
F0=0 MHz
ID=C2
C=4.7 pF
ID=C8
C=100 pF
ID=C7
C=1000 pF
-Vgg Vds=9V @ 450 mA
ID=R2
R=51 Ohm
ID=C12
C=1e5 pF
ID=C11
C=1000 pF
ID=C10
C=100 pF
ID=L3
L=3.3 nH
ID=L1
L=27 nH
ID=R1
R=10 Ohm
NET="FP31QF"
2
1
ID=L2
L=27 nH
TLINP
ID=TL2
Z0=50 Ohm
L=520 mil
Eeff=3.46
Loss=0
F0=0 MHz
ID=C4
C=100 pF
ID=C3
C=4.7 pF
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
Page 3 of 12 October 2006