MC1496, MC1496B
5 5.0?80
9.5 m F
L1
100
Local
Oscillator
Input
100 mVrms
RF Input
51
1.0 k
0.001 m F
2
51 8
10
0.001 m F 1
4
10 k
10 k 51
50 k
Null Adjust
1.0 k
0.01
m F
3
6
MC1496
12
14
6.8 k
V EE
?8.0 Vdc
pF
V CC
+8.0 Vdc
RFC
100 m H
0.001 m F
9.0 MHz
Output
R L = 50 W
90?480 pF
1.0 k
Input
15 mVrms
10 k
+ 100 m F
1.0 k ? 25 Vdc
C2
100 m F ? C2 +
15 Vdc Max 100 m F 15 Vdc
10 k 100 100
50 k
8
10
1
4
2
14
1.0 k
3
MC1496
5
3.9 k
6
12
6.8 k
V CC
12 Vdc
3.9 k
Outp
L1 = 44 Turns AWG No. 28 Enameled Wire, Wound
on Micrometals Type 44 ? 6 Toroid Core.
Balance
I5
V EE
?8.0 Vdc
Figure 29. Doubly Balanced Mixer
(Broadband Inputs, 9.0 MHz Tuned Output)
Figure 30. Low ? Frequency Doubler
1.0 k
1.0 k
V +
V CC
+8.0 Vdc
m F
100
0.001 m F
150 MHz
Input
100
10 k
10 k
0.001
0.001
m F
2
8
10
1 MC1496
4
100 14
3
5
18 pF
R FC
0.68 m H
6
12
L1
18 nH
1.0?10 pF
1.0?10 pF
300 MHz
Output
R L = 50 W
50 k
Balance
V EE
?8.0 Vdc
6.8 k
L1 = 1 Turn AWG
No. 18 Wire, 7/32 ″ ID
Figure 31. 150 to 300 MHz Doubler
Frequency
Balanced Modulator Spectrum
DEFINITIONS
f C
f S
f C ± f S
Carrier Fundamental
Modulating Signal
Fundamental Carrier Sidebands
f C ± nf S Fundamental Carrier Sideband Harmonics
nf C Carrier Harmonics
nf C ± nf S Carrier Harmonic Sidebands
http://onsemi.com
11
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