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FP31QF-PCB900 Fiches technique(PDF) 9 Page - WJ Communication. Inc.

No de pièce FP31QF-PCB900
Description  2-Watt HFET
Download  12 Pages
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Fabricant  WJCI [WJ Communication. Inc.]
Site Internet  http://www.wj.com
Logo WJCI - WJ Communication. Inc.

FP31QF-PCB900 Fiches technique(HTML) 9 Page - WJ Communication. Inc.

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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 9 of 12 October 2006
FP31QF
2-Watt HFET
Product Information
The Communications Edge
TM
Reference Design: 2400 – 2500 MHz
The application circuit is matched for output power.
Typical RF Performance
Drain Bias = +9 V, Ids = 450 mA, 25 °°°°C
Frequency
MHz
2400
2500
S21 – Gain
dB
12.1
12.0
S11 – Input Return Loss
dB
-13
-16
S22 – Output Return Loss
dB
-13
-17
Output P1dB
dBm
+33.5
Output IP3
(+18 dBm / tone, 1 MHz spacing)
dBm
+46.8
Noise Figure
dB
4.6
The 2.4 – 2.5 GHz Reference Circuit is shown for design purposes only. An
evaluation board is not readily available for this application. The reader can
obtain any FP31QF evaluation board and modify it with the circuit shown to
achieve the performance shown in this reference design.
2.3
2.35
2.4
2.45
2.5
2.55
2.6
Frequency (GHz)
Measured S-Parameters
-25
-20
-15
-10
-5
0
5
10
15
DB(|S[1,1]|)
DB(|S[2,1]|)
DB(|S[2,2]|)
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
.
Bill of Materials
Ref. Desig.
Value
Part style
Size
C1, C4, C8, C10
22 pF
Chip capacitor
0603
C2, C3
1.5 pF
Chip capacitor
0603
C7, C11
1000 pF
Chip capacitor
0603
C12
0.1 µF
Chip capacitor
1206
L1, L2
12 nH
Wirewound chip inductor
0805
L3
3.3 nH
Multilayer chip inductor
0603
R1
5.1
Chip resistor
0603
R2
50
Chip resistor
0603
Q1
FP31QF
WJ 2W HFET
QFN 6x6
C5, C6
Do Not Place
• The C2 and C3 placements are at silk screen markers, “A” and “2”, 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=R1
R=5.1 Ohm
ID=C1
C=22 pF
ID=L2
L=12 nH
ID=C10
C=22 pF
ID=C11
C=1000 pF
ID=C12
C=1e5 pF
ID=C4
C=22 pF
ID=C8
C=22 pF
ID=C7
C=1000 pF
ID=C3
C=1.5 pF
ID=L1
L=12 nH
ID=R2
R=51 Ohm
ID=L3
L=3.3 nH
TLINP
ID=TL2
Z0=50 Ohm
L=180 mil
Eeff=3.46
Loss=0
F0=0 MHz
ID=C2
C=1.5 pF
TLINP
ID=TL1
Z0=50 Ohm
L=150 mil
Eeff=3.46
Loss=0
F0=0 MHz
1
2
NET="FP31QF"
-Vgg
Vds=9V @ 450 mA
C2
C3


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