Propagation Of Electromagnetic Waves
Chapter Name : Communication Systems |
Sub Topic Code : 101_12_15_06_03 |
Topic Name : Propagation Of Electromagnetic Waves |
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Sub Topic Name : Space Wave |
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Introduction
A communications system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually capable of interconnection and interoperation to form an integrated whole.
Pre-Requisites:
Communications system
Activity:
Radio.
Real Life Question:
What is Space Wave?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Bandwidth | Bandwidth is the difference between the upper and lower frequencies in a continuous set of frequencies. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Broadcasting | Broadcasting is the distribution of audio and video content to a dispersed audience via any audio or visual mass communications medium, but usually one using electromagnetic radiation (radio waves). |
Real life uses :
Communication.
Places to visit :
Radio station.
Practical examples around us
| Examples | Explainations |
|---|---|
| Radio communication system | A radio communication system is composed of several communications subsystems that give exterior communications capabilities. |
What you learn in Theory:
The component of a ground wave that travels more or less directly through space from the transmitting antenna to the receiving antenna; one part of the space wave goes directly from one antenna to the other; another part is reflected off the earth between the antennas.
What you learn in Practice:
The primary path of the space wave is directly from the transmitting antenna to the receiving antenna.