MRF317 Datasheet, PDF (3/5 Pages) Motorola, Inc – BROADBAND RF POWER TRANSISTOR NPN SILICON

RFC3
R1
C5
RFC2
RF
INPUT
C1
L1
L2
C2
RFC1
C3 C4
RFC4
L3
DUT
R2
R3
RFC5
C11
C13
C12
RFC6
DC +ā28 Vdc
L4
C10
RF
OUTPUT
C6
C7
C8
C9
C1, C9 — 39 pF, 100 mil ATC
C2 — 120 pF, 100 mil ATC
C3, C4 — 360 pF, 100 mil ATC
C5 — 1000 pF Dipped Mica
C6, C7 — 100 pF, 100 mil ATC*
C8 — 18 pF, 100 mil ATC*
C10 — 43 pF, 100 mil ATC
C11 — 60 pF, Underwood
C12 — 0.1 µF Erie Redcap
C13 — 1000 pF, Underwood J102
L1 — 50 nH
L2 — 6.0 nH
L3 — 8.0 nH
L4 — 32 nH
RFC1 — 0.15 µH Molded Coil
RFC2, RFC3 — Ferroxcube Bead 56–590–65/3B
RFC4 — 1 Turn, #18 Wire, 2.0″ L
RFC5 — Ferroxcube VK200 19/4B
RFC6 — 7 Turns, #18 Wire, 0.3″ ID
R1 — 10 Ω 1/2 W
R2, R3 — 10 Ω 1.0 W
*Combination of C6, C7, C8 equals 220 pF.
Figure 1. 110ā–ā160 MHz Broadband Amplifier — Test Fixture Schematic
10
9
8
7
P_out = 100 W
V_CC = 28 V
6
110
135
160
f, FREQUENCY (MHz)
Figure 2. Power Gain versus Frequency
Broadband Test Fixture
70
60
50
40
P_out = 100 W
30
V_CC = 28 V
20
110
135
160
f, FREQUENCY (MHz)
Figure 3. Efficiency versus Frequency
Broadband Test Fixture
6
P_out = 100 W
5
V_CC = 28 V
4
3
2
1
110
135
160
f, FREQUENCY (MHz)
REV 7
3
Figure 4. Input VSWR versus Frequency
Broadband Test Fixture
140
V_CC = 28 V
120
100
f = 30 MHz 50 MHz
80
60
200 MHz
40
150 MHz
20
0.2
0.5
1
2
100 MHz
5
10
20
P_in, INPUT POWER (WATTS)
Figure 5. Output Power versus Input Power