CHAPTER 2
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Electronic Communications System By Wayne Tomasi
SIGNAL ANALYSIS AND MIXING
DEFINITIONS
TERMS
1)
Electrical signals of which amplitude changes continuously with respect to time with no breaks or discontinuities. Analog Signals
2)
Electrical signals that are described as discrete; their amplitude maintains constant level for a prescribed period of time and then it changes to another level with respect to time with no breaks or discontinuities.
Digital Signals
3)
Digital signal with only two levels possible.
Binary Signal
4)
Digital signal with four levels possible.
5)
Is the mathematical analysis of the frequency, bandwidth, and voltage level of a signal.
Signal Analysis
6)
A signal that repeats at a uniform rate.
Periodic Wave
7)
A description of signal with respect to time.
Time-domain
Representation
8)
A time-domain instrument that shows signal waveforms. Oscilloscope
The display on the cathode ray tube (CRT) that shows the shape and instantaneous magnitude of the signal with respect to time.
9)
10)
A description of signal with respect to its frequency.
Prepared By : APRIL A. BALDOVINO
Quaternary Signal
Signal Waveform
Frequency Domain
Representation
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BOOK REVIEW IN COMMUNICATIONS
Electronic Communications System By Wayne Tomasi
11)
A frequency-domain instrument that shows amplitude-versus-frequency plot.
12)
Any repetitive wave that is comprised of more than one harmonically related sine or cosine wave.
13)
A mathematical series developed in 1826 by French physicist and mathematician Baron Jean Fourier used to analyze complex periodic wave.
Fourier Series
14)
A mathematical tool that allows us to move back and forth between the time and frequency domains.
It is used in signal analysis to represent the sinusoidal components of nonsinusoidal periodic waveforms.