PTB20170 Datasheet, PDF (4/5 Pages) Ericsson – 30 Watts, 1.8-2.0 GHz Cellular Radio RF Power Transistor

PTB 20170
Test Circuit
e
* Thermally linked to RF device.
Schematic for f = 2 GHz
Q1
L1
L1
L5, L6
L7
L8
C1, C2,
C3, C4
C5, C7
C6, C8
C9
20170, NPN RF Transistor
.185 λ 2GHz, Microstrip 18 Ω
.195 λ 2GHz, Microstrip 9.5 Ω
4 Turn #20 AWG, .120” I.D.
56 µA SMT Inductor
Ferrite Bead
33 pF ATC-B
33 pF ATC-B
0.1 υF, 1206
10 pF SMT Electrolytic Capacitor
0–4 pF Johanson Variable Capacitor
R1
R2
Circuit Board
22 Ω 118 W SMT Resistor
12 Ω .5 W Axial Resistor
.031 G-200, Solid Copper Bottom
AlliedSignal
Bias Parts (not shown on layout)
Q2
BCP 56
D1
BAV 99
C10, C11
0.1 pF
R2
2K
R3, R4
10 Ω
SMT NPN Transistor
Diode
SMT Capacitor
Potentiometer
1206 SMT Resistor
Board Assembly (not to scale)
4
5/18/98