MRF899 Datasheet, PDF (2/6 Pages) Motorola, Inc – RF POWER TRANSISTOR NPN SILICON

ELECTRICAL CHARACTERISTICS — continued (TC = 25°C unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
FUNCTIONAL CHARACTERISTICS
Common–Emitter Amplifier Power Gain
Gpe
VCC = 26 Vdc, Pout = 150 Watts (PEP), Icq = 300 mA, f1 = 900 MHz,
f2 = 900.1 MHz
Collector Efficiency
η
VCC = 26 Vdc, Pout = 150 Watts (PEP), Icq = 300 mA, f1 = 900 MHz,
f2 = 900.1 MHz
3rd Order Intermodulation Distortion
IMD
VCC = 26 Vdc, Pout = 150 Watts (PEP), Icq = 300 mA, f1 = 900 MHz,
f2 = 900.1 MHz
Output Mismatch Stress
ψ
VCC = 26 Vdc, Pout = 150 Watts (PEP), Icq = 300 mA, f1 = 900 MHz,
f2 = 900.1 MHz, VSWR = 5:1 (all phase angles)
8.0
9.0
—
dB
30
40
—
%
—
– 32
–28
dBc
No Degradation in Output Power
Before and After Test
INPUT
VBB
COAX 1
VB
R1b
C5 C7
R2
L4
C3
TL1
B1
L2
C1
TL3
C10 C12 C14
VCC
C17
R3 L6
TL5
C20 C22
TL7
L7
C24
C9
C2
TL4
C16
C19
L3
D.U.T. _TL6
C25
L9
TL2
B2
L1
BALUN 1
TL8
+
R4 L8 C21
C23
R3
L5
+
+
C4
C27
R1a
VBB
+
C6 C8 C11
C13 C15 C18
+
Q1
C26
VB
VCC
BALUN 2
COAX 2
OUTPUT
B1, B2 — Ferrite Bead, Ferroxcube #56–590–65–3B
C1, C2, C24, C25 — 43 pF, B Case, ATC Chip Capacitor
C3, C4, C20, C21 — 100 pF, B Case, ATC Chip Capacitor
C5, C6, C12, C13 — 1000 pF, B Case, ATC Chip Capacitor
C7, C8, C14, C15 — 1800 pF, AVX Chip Capacitor
C9 — 9.1 pF, A Case, ATC Chip Capacitor
C10, C11, C17, C18, C22, C23 — 10 µF, Electrolytic Capacitor
Panasonic
C16 — 3.9 pF, B Case, ATC Chip Capacitor
C19 — 0.8 pF, B Case, ATC Chip Capacitor
C26 — 200 µF, Electrolytic Capacitor Mallory Sprague
C27 — 500 µF Electrolytic Capacitor
L1 — 5 Turns 24 AWG IDIA 0.059″ Choke, 19.8 nH
L2, L3, L7, L9 — 4 Turns 20 AWG IDIA 0.163″ Choke
L4, L5, L6, L8 — 12 Turns 22 AWG IDIA 0.140″ Choke
N1, N2 — Type N Flange Mount, Omni Spectra
Q1 — Bias Transistor BD136 PNP
R2, R3, R4, R5 — 4.0 x 39 Ohm 1/8 W Chips in Parallel
R1a, R1b — 56 Ohm 1.0 W
TL1 – TL8 — See Photomaster
Balun1, Balun2, Coax 1, Coax 2 — 2.20″ 50 Ohm 0.088″ o.d.
Balun1, Balun2, Coax 1, Coax 2 — Semi–rigid Coax, Micro Coax
Board — 1/32″ Glass Teflon, ε_r = 2.55″ Arlon (GX–0300–55–22)
Figure 1. 900 MHz Power Gain Test Circuit
MRF899
2
MOTOROLA RF DEVICE DATA