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2000 Nov 15 6
Philips Semiconductors Preliminary specification
UHF amplifier module BGY280
Fig.8 Output amplitude modulation as a function
of load power; typical values.
Z
S
=Z
L
=50Ω; V
S
=3.6V; P
D
=0dBm; T
mb
=25°C;
∆f = 100 kHz; input amplitude modulation = 5.4%; δ =2:8; t
p
=575µs.
0
10
20
30
40
0 10203040
P
L
(dBm)
output
AM
(%)
900MHz
1800MHz
Fig.9 Output phase at P
D
= +0.5 dBm, relatively
to output phase at P
D
= −0.5 dBm;
typical values.
Z
S
=Z
L
=50Ω; V
S
=3.6V; P
D
=0dBm; T
mb
=25°C;
δ =2:8; t
p
=575µs.
0
2
4
6
8
-10 0 10 20 30 40
P
L
(dBm)
AM-PM
(deg/dB)
1800MHz
900MHz
Fig.10 Noise as a function of load power;
typical values.
Z
S
=Z
L
=50Ω; V
S
=3.6V; P
D
=0dBm;
T
mb
=25°C; δ =2:8; t
p
= 575 µs.
-100
-90
-80
-70
-60
0 10203040
P
L
(dBm)
noise
(dBm)
R
X
=1845MHz
R
X
=942.5MHz