Inasmuch as a post coronavirus education could be delivered by way of distance learning or via the Internet, let’s discuss transmitters and receivers. Understanding how information is being relayed by wireless systems, will explain why we need advanced systems of communication to make remote learning more effective. .
Nonetheless, advancements in communications technology have come a long way. Yet all related developments and innovations originated from the simple workings of a transmitter and its receiver/s. These electrical components exist in most of the gadgets we use today, albeit in more complex designs, and working in highly computerized environments and larger infrastructures.
As a form of educational discussion, we will focus on the simple topic about how basic transmitters and receivers work.
What are Transmitters and Receivers? How Do They Work?
A transmitter is actually a set of devices used for generating electromagnetic waves that are sent out to deliver signals or messages. A receiver located in another set of equipment, and usually positioned in another location, will in turn receive and relay the messages. The most common examples of transmitters are those that send out electromagnetic waves to home appliances like radio and television.
Transmitters work by converting electricity into radio waves by passing current to the transmitter antenna. Electrons passing through the antenna vibrate in upward and downward patterns that create the electromagnetic radio waves. The transmitter antenna releases the radio waves in the air, to travel at the speed of light, until it reaches the antenna of a receiver.
The receiving antenna will have been configured to receive the radio waves sent by one or more transmitters. That is why a radio or a TV set can broadcast different programs coming from different stations.
A simple example of how a transmitter and receiver works is an invisible barrier or wireless dog fence that modern day homeowners use in preventing their pets from entering restricted areas.
How Does a Wireless Dog Fence Work?
A wireless dog fence is basically an invisible barrier used in preventing a pet dog from entering a particular outdoor area of a pet owner’s property. Although some owners use it only for training purposes, some others make it a point to turn the invisible barriers on, as a constant precaution ; especially if it means ensuring the safety of their animal.
Many see an invisible barrier as a less expensive alternative to building a fence especially, if required only in a specific and smaller section of an outdoor area, like garden beds. A transmitter attached to a home socket sends electromagnetic signals to that boundary.
Meanwhile, the dog wears a collar outfitted with a receiving device. Every time the dog reaches the space in which electromagnetic waves are sent, the receiver in the dog collar will give the pet a gentle jolt to remind the animal that it is an off-limit area.
While we are merely citing wireless dog fencing as an example of how transmitters and receivers work, we also deem it best to recommend for pet owners to select only the best wireless dog fence there is, in order to truly protect their pet.