Mobile and Messaging - Radio & WiFi Fundamentals Flashcards
What are radio signals made of?
Waves of energy
What is the definition of frequency?
How often waves appear
What is the definition of wavelength?
The distance a radio signal will travel in one cycle (measured peak-to-peak)
What is the definition of amplitude?
The height and depth of the waves in relation to the DC value
Which type of signal propagates further; Bluetooth or WiFi?
WiFi
What is the definition of phase?
The relationship between multiple signals
What is constructive interference?
When two or more signals are in phase
What is destructive interference?
When two or more signals are out of phase
What is propagation?
The ability for a signal to travel
Name four ways a signal can be effected by the environment it’s traveling though.
Absorption, reflection, refraction, and diffraction.
What is the definition of modulation?
The modification of a radio wave to contain info