BLS2731-110,114

2001 Dec 05 4
Philips Semiconductors Product specification
Microwave power transistor BLS2731-110
Fig.2 Power gain and efficiency as functions of
frequency; typical values.
V
CE
= 40 V; class-C; t
p
= 100 µs; δ = 10%.
handbook, halfpage
2.7 2.8 2.9
G
p
(dB)
G
p
3.1
f (GHz)
10
0
8
3
6
4
2
η
C
(%)
η
C
50
0
40
30
20
10
MBK284
V
CE
= 40 V; class-C; t
p
= 100 µs; δ = 10%.
Fig.3 Load power as a function of drive power;
typical values.
handbook, halfpage
10 12 14 20
P
L
(W)
P
D
(W)
18
140
0
40
20
120
16
2.9 GHz
2.7
3.1
100
80
60
MBK285
Fig.4 Input impedance as function of frequency
(series components); typical values.
V
CB
= 40 V; class-C; P
L
= 110 W.
handbook, halfpage
2.6
12
8
4
0
2.8 3 3.2
MGM538
f (GHz)
Z
i
()
r
i
x
i
Fig.5 Load impedance as function of frequency
(series components); typical values.
V
CB
= 40 V; class-C; P
L
= 110 W.
handbook, halfpage
2.6 2.8 3 3.2
8
4
4
8
0
MGM539
f (GHz)
Z
L
()
X
L
R
L
2001 Dec 05 5
Philips Semiconductors Product specification
Microwave power transistor BLS2731-110
Fig.6 Component layout for 2.7 to 3.1 GHz class-C test circuit.
Dimensions in mm.
The components are located on one side of the copper-clad printed-circuit board, the other side is unetched and serves as a ground plane.
Earth connections from the component side to the ground plane are made by through metallization.
handbook, full pagewidth
MGM540
input output
40
30 30
L5
L4
L6
L3
L9 C1
L12
L13 L14
L10
C2
RC
L11
L2
L1
L8
L7
2001 Dec 05 6
Philips Semiconductors Product specification
Microwave power transistor BLS2731-110
List of components (see Fig.6)
Notes
1. American Technical Ceramics type 100A or capacitor of same quality.
2. The striplines are on double-clad printed-circuit board with Duroid dielectric (ε
r
= 2.2); thickness = 0.38 mm.
COMPONENT DESCRIPTION VALUE DIMENSIONS
C1 multilayer ceramic chip capacitor; note 1 12 pF
C2 multilayer ceramic chip capacitor; note 1 18 pF
RC multilayer ceramic chip capacitor in series
with SMD resistor
100 nF + 5
L1 stripline; note 2 length 4.5 mm
width 10 mm
L2 stripline; note 2 length 2.5 mm
width 16.4 mm
L3 stripline; note 2 length 8.3 mm
width 1 mm
L4 stripline; note 2 length 8 mm
width 1.5 mm
L5 stripline; note 2 length 2 mm
width 8.9 mm
L6 stripline; note 2 length 12.7 mm
width 1.2 mm
L7 stripline; note 2 length 4.5 mm
width 10 mm
L8 stripline; note 2 length 2.5 mm
width 24.4 mm
L9 stripline; note 2 length 4.4 mm
width 1 mm
L10 stripline; note 2 length 5.2 mm
width 1 mm
L11 stripline; note 2 length 9.3 mm
width 1 mm
L12 stripline; note 2 length 2.5 mm
width 6 mm
L13 stripline; note 2 length 7.8 mm
width 1.2 mm
L14 stripline; note 2 length 7.5 mm
width 1.2 mm

BLS2731-110,114

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Manufacturer:
Description:
RF TRANS NPN 75V 3.1GHZ CDFM2
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