Datasheet

1998 Aug 10 11
Philips Semiconductors Product specification
UHF wideband transistor PBR941
Fig.17 Common emitter available gain circles; typical values.
handbook, full pagewidth
MDA885
0
0.2
0.6
0.4
0.8
1.0
1.0
5
2
1
0.5
0.2
0.2
0.5
1
2
5
0.50.2 1 2 5
180°
−135°
−90°
−45°
0°
45°
90°
unstable
region source
unstable
region load
Γ
OPT
G = 16 dB
G = 15 dB
G = 14 dB
NF = 1.9 dB
NF = 1.5 dB
NF = 1.7 dB
135°
f = 1 GHz; V
CE
= 6 V; I
C
= 5 mA; Z
o
=50Ω.
Fig.18 Common emitter available gain circles; typical values.
f = 2 GHz; V
CE
= 6 V; I
C
= 5 mA; Z
o
=50Ω.
handbook, full pagewidth
MDA886
0
0.2
0.6
0.4
0.8
1.0
1.0
5
2
1
0.5
0.2
0
0.2
0.5
1
2
5
0.2 0.5 1 2 5
180°
−135°
−90°
−45°
0°
45°
90°
135°
unstable
region source
unstable
region load
G = 10 dB
G = 9 dB
G = 8 dB
G
max
= 10.26 dB
NF = 2.1 dB
NF = 2.3 dB
NF = 2.5 dB
Γ
OPT