1.
Fiber Optical
Cables are used for light and infrared transmission
2.
Co-axial cabels
provide greater Band Width, Lower Losses,
Lower Cross- Talk
3.
Multiplexing means transmission of two or more signals
simultaneously
4.
The amount of
change in carrier frequency produced by
the modulation is known as Frequency Deviation
5.
In pulse position
modulation the position of periodic sequential pulses are varied
6.
In low level
modulation technique the generation of AM signal takes place at Initial
Stage of amplification
7.
The balanced
modulator circuit is used to suppress the carrier from the AM signal
8.
The Costas Loop
is a method of obtaining a practical synchronous receiving system
9.
The filter method
gives sideband suppression up to 50db
10. Frequency of unmodulated sinusoidal carrier also
termed as Center Frequency
11.
The modulated wave
consist of anUnmodulated carrier and various amplitude modulated
terms
12. Some of the Bessel coefficients may have negative
values
13. Audio frequencies higher than 50hz will be
attenuated in amplitude
14. The variation of output voltage with frequency is
known as the Discriminator Characteristics
15.
The ratio detector
provides Amplitude Limitations
0 comments:
Post a Comment