LESSON 1
INTRODUCTION TO FREQUENCY SYNTHESIS
SCOPE ....................................What frequency synthesis means; basic
frequency
synthesis
principle;
synthesizing
methods;
why
synthesized
output signals must be stabilized.
CREDIT HOURS..............................2
TEXT ASSIGNMENT...........................Attached Memorandum
MATERIALS REQUIRED........................None
SUGGESTIONS...............................None
LESSON OBJECTIVES
When you have completed this lesson, you should:
1. Know that to prevent channel interference each carrier signal must be of a
different frequency and extremely stable.
2. Know that frequency synthesis refers to the process of obtaining several
different frequencies either from a single source or from a minimum number of
sources.
3. Be able to identify the three general methods of synthesizing signals.
4. Know that a stabilized master oscillator (SMO) is controlled not only by a
crystal, but also by special frequency-controlling circuits.
5. Be able to identify the two most common methods of stabilizing the SMO.
6. Know that most frequency-synthesizing circuits are made up of circuits that add,
subtract, multiply, or divide the frequency of the signal applied to the input.
327 L1
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