PTB20237 Datasheet, PDF (3/4 Pages) Ericsson – 150 Watts, 470-860 MHz UHF TV Power Transistor

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Impedance Data (shown for fixed-tuned broadband circuit)
V_CC = 28 Vdc, P_OUT = 150 W, I_CQ = 800 mA Total
Z Source
Z Load
Frequency
MHz
470
560
665
760
860
Test Circuit
Z Source
R
jX
1.10
3.00
1.20
4.30
2.35
5.85
7.10
7.10
6.75
-1.10
Z Load
R
jX
4.40
0.80
3.15
1.50
2.50
0.35
1.85
-0.55
1.50
-0.60
PTB 20237
Z₀ = 50 Ω
Schematic for broadband test fixture (f = 470–860)
DUT
C1
C2, 3
C4, 16
C5,7
C6, 8
C9
C10
C11
C12
C13
20237
10 pF
0.001 uF
100 uF, 50 V
3.6 pF
0.35–3.5 pF
15 pF
7.5 pF
12 pF
8.2 pF
0.35–3.5 pF
ATC 100A
ATC 100B
Electrolytic Capacitor
ATC 100B
Johanson Trimmer
Dialectric Labs
ATC 100B
ATC 100B
ATC 100B
Johanson Trimmer
5/6/98
C14
C15
C17, 18
C19
C20, 21
L1
L2
R1
R2
R3-6
Circuit Board
7.5 pF
ATC 100B
75 pF
ATC 100B
0.1 uF
1206 Chip
22 pF
ATC 100B
100 pF
ATC 100A
25 W, Semi-rigid Balun
25 W, Semi-rigid Balun
100 W
Chip Resistor
100 W
Chip Resistor
1W
Chip Resistor
e Copper Clad PTFE _r = 2.5, .031" Thick
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