CA3127
GENERAL RADIO 1021-P1
100MHz GENERATOR
ATTN
100MHz
TEST SET
BOONTON 91C
RF VOLTMETER
12VDC
POWER SUPPLY
FIGURE 3A. POWER GAIN SET-UP
VHF NOISE SOURCE
HEWLETT PACKARD HP343A
100MHz
TEST SET
100MHz
POST AMPLIFIER
NOISE FIGURE METER
HEWLETT PACKARD HP342A
12VDC
POWER SUPPLY
15VDC
POWER SUPPLY
FIGURE 3B. NOISE FIGURE SET-UP
FIGURE 3. BLOCK DIAGRAMS OF POWER-GAIN AND NOISE-FIGURE TEST SET-UPS
Typical Performance Curves
TA = 25°C
30 VCE = 6V
RSOURCE = 500Ω
20
f = 10Hz
f = 100Hz
f = 1kHz
10
f = 10kHz
f = 100kHz
0
0.01
0.1
1.0
COLLECTOR CURRENT (mA)
FIGURE 4. NOISE FIGURE vs COLLECTOR CURRENT
TA = 25°C
30 VCE = 6V
RSOURCE = 1kΩ
f = 10Hz
f = 100Hz
20
f = 1kHz
f = 10kHz
10
0
0.01
f = 100kHz
0.1
1.0
COLLECTOR CURRENT (mA)
FIGURE 5. NOISE FIGURE vs COLLECTOR CURRENT
4
FN662.5
June 5, 2006