What You Need To Know About Satellite Antennas
You may have asked yourself how do antennas work? Even when you are sitting with friends, this question has been most likely requested. What You Need To Know About Satellite Antennas
Either way, it is not mandatory to know how they work in a scientific sense, but there is nothing wrong with learning new stuff every day.
The first-ever satellite to be launched into space happened towards the end of the fifties. It was launched by the Soviet Union. The name of the satellite was Sputnik, and with this step, the beginning of race for space exploration has begun.
Even though the Cold War was nothing else but just bragging about technologies, it allowed scientists to create new inventions. With the first satellite launch, a new field in engineering has been invented- Satellite communications.
An interesting thing to know is that Sputnik orbited in space for three weeks, and after that, its battery died. The one and only message which Sputnik delivered were “this will be the future of communications.”
After sixty years, there are one thousand and one-hundred active satellites that are orbiting the Earth, which of sixty percent are only for communications. If you want to read more into the history of this field, be sure to check out the following link for more information https://www.sciencehistory.org/distillations/magazine/sputnik-fever
How Do They Work?
A satellite can be anything that orbits around a planet or a star. What some people do not know is that the Moon is actually a natural satellite. For antennas to get a signal, they must communicate with satellites that have been launched into space to send information.
Without them, communications would be much slower, and with this invention, a faster approach has been achieved. Some people even consider satellites that are in space to be actually space antennas. This is mostly true because they also transmit and send signals.
You may have asked yourself, how do they orbit? Well, there is a name for that, and it is called geosynchronous. This means that they follow the Earth’s orbit as if they are in a static position.
It all comes down to the manufacturer and what their purpose is. However, there are some main parts that every satellite has, and they are housing, solar array, antennas, and sensors for guidance and stabilization.
Housing is necessary for protection. It serves as a shell that has transponders, thermal control, data handling, etc.
Sensors are mandatory for monitoring any movement to ensure that it stays in the proper orbit and to be correctly targeted.
Solar arrays are photovoltaic panels that are used for collecting and generating energy from the Sun. These days, they are the main power source, but they also have batteries in a solar eclipse.
Frequencies And Types
Most frequencies vary from one to seventy-five GHz range of the electromagnetic spectrum. There are bands such as the L-band, which differs from one to two GHz, and it is used for GPS.
C-band goes from four to eight GHz, and it is used for satellite networks or other satellite feeds. X-band is used for the military, and it has eight to twelve GHz. Others that should be mentioned are Ku-band, Ka-band, and V-band. If you want to read more into this, click on this link.
There are infinite uses for the antennas, but there are some which are the most important in today’s world, one of which is non-broadcast TV. Satellite cable first gained its popularity back in the seventies. The pioneers of this pethood are Gerald Levin, Pat Robertson, and Ted Turner, along with many others who came up with this brilliant idea.
After two decades, its potential got even more significant, and companies have started to implement direct-to-home TV methods, and they used different bands such as Ka and Ku. Nowadays, people use smaller versions of antennas to receive signals for television services.
One of the most essential things which have been a revolutionary invention was the GPS. With the use of satellite antennas, GPS has made lives much easier for people. It serves its purpose even today because there are apps that require no technical skills to know them.
With the rise of new technologies, and even with the invention of the 5G network, the speed of information that travels has been significantly increased. As time goes by, there will be new discoveries that will allow the world to exceed at a faster pace.
One thing is sure, investing in science should be mandatory for all countries as it will allow every field to improve at a significant level. With the invention of 5G, it is possible for doctors to operate on someone from a different country because information travels much faster.
This would not be possible without the improvements of antennas which allow for information to be received and delivered.
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