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True or False
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1
There are dozens of modulator circuits developed that will cause the carrier amplitude to be varied in accordance with the modulating information signal.
A)True
B)False
2
If the gain of an amplifier or the attenuation of a voltage divider is varied in accordance with a modulating signal minus 1, AM will be produced.
A)True
B)False
3
One way to generate the product of the carrier and modulating signal is to apply both signals to a nonlinear component or circuit.
A)True
B)False
4
A nonlinear circuit is one in which the current is directly proportional to the voltage.
A)True
B)False
5
Diodes and transistors whose function is a pure square-law function produce harmonics known as intermodulation products.
A)True
B)False
6
High-level modulators produce AM at low power levels, usually in the first amplifier stage of a transmitter.
A)True
B)False
7
One of the simplest amplitude modulators is the diode modulator.
A)True
B)False
8
A diode modulator is used rather than a transistor modulator because the diode circuit provides gain.
A)True
B)False
9
PIN diodes are a special type of silicon junction diode for use at frequencies above approximately 100 MHz.
A)True
B)False
10
A differential amplifier modulator cannot be used as an amplitude modulator.
A)True
B)False
11
The 1496/1596 IC balanced modulator can work with frequencies up to approximately 100 MHz.
A)True
B)False
12
In addition to being a balanced modulator, the 1496 IC can be configured to perform as an amplitude modulator, a product detector, or a synchronous detector.
A)True
B)False
13
Analog multipliers are never used to generate DSB signals.
A)True
B)False
14
The simplest and most widely used method of generating SSB signals is the filter method.
A)True
B)False
15
A phase shifter is usually an RC network that causes the output to either lead or lag the input by 90°.
A)True
B)False





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