The first antennas were built in 1886 by German physicist Heinrich Hertz in his pioneering experiments to prove the existence of electromagnetic waves predicted by the 1867 electromagnetic theory of James Clerk Maxwell.
The first wireless radio was invented in 1893 in St Louis by Nikola Tesla. The credit for the first radio, however, went to Guglielmo Marconi. Marconi was issued the first patent for a wireless radio device in England in 1896. Tesla's patents were not granted in the United States until 1900, four years after Marconi.
The first patent for the technology was filed by Hidetsugu Yagi in 1928, but Grote Reber is credited as the first person to build a parabolic antenna for radio astronomy in 1937. During World War II, parabolic antennas were used in radar systems, which led to further development of their design.
The origin of the word antenna relative to wireless apparatus is attributed to Italian radio pioneer Guglielmo Marconi. In the summer of 1895, Marconi began testing his wireless system outdoors on his father's estate near Bologna and soon began to experiment with long wire "aerials" suspended from a pole.
Dish antenna is curved so as it can receive prallel signal rays coming from same direction. These parallel signal rays reflect from parabolic dish, and gathered main antenna part. This increases directivity of antenna, and gives sufficient amplitude signal.
TESLA SUES MARCONI ON WIRELESS PATENT; Alleges That Important Apparatus Infringes Prior Rights Granted to Him. BASIC PRINCIPLES INVOLVED Marconi Company Manager Claims Ownership of All Underlying Wireless Inventions.
Tim Berners-Lee. Sir Timothy John Berners-Lee (born 8 June 1955), also known as TimBL, is an English computer scientist best known as the inventor of the World Wide Web, HTML, the URL system, and HTTP.
You only need an aerial if you plan to enjoy live television broadcasts. Other features, such as streaming, can be accessed with just a simple internet connection. Just make sure you have a paid membership for any streaming services you plan to use!
The oldest and most widely used (at least in the United States) indoor antenna is the rabbit ears or bunny ears, which are often provided with new television sets.
Guglielmo Marconi (born April 25, 1874, Bologna, Italy—died July 20, 1937, Rome) was an Italian physicist and inventor of a successful wireless telegraph, or radio (1896).
Edwin Howard Armstrong (December 18, 1890 – February 1, 1954) was an American electrical engineer and inventor who developed FM (frequency modulation) radio and the superheterodyne receiver system.
Although the use of electricity as we know it today is the result of much research and years of development, the invention is attributed to Thomas Edison (1879), since he managed to illuminate an incandescent light bulb with energy.
Radia Perlman was the first to write an algorithm that allowed more devices and organizations to connect via the internet. The first computer, invented by Charles Babbage, was revolutionized by the first algorithm written and invented by Ada Lovelace.
In 1884 Marcellus Gilmore Edson of Canada patented peanut paste, the finished product from milling roasted peanuts between two heated surfaces. In 1895 Dr. John Harvey Kellogg (the creator of Kellogg's cereal) patented a process for creating peanut butter from raw peanuts.
We can probably surmise that Tesla was upset when the U.S. Patent Office reversed its earlier decision and awarded Marconi patent rights in 1904. He was probably further unhappy when Marconi was awarded the Nobel prize in 1909.
Whilst Thomas Edison does, rightfully so, get some 'heat' for 'stealing' many of Nikola Tesla's inventions and developments, the lightbulb is not one of them. In fact, Tesla spent little, if any of his time, developing incandescent electrical lighting of any kind.
Documents reveal that he suffered a nervous breakdown, as well as having symptoms that point to a probably presence of obsessive-compulsive disorder, of which included counting and cleanliness rituals, exacerbated by chronic insomnia.
Horn antennas offer wide bandwidth (typically 10:1 ratio) with 10-20 dBi gain, ideal for short-range applications like radar feeds. Parabolic dishes achieve higher gain (30-50 dBi) through reflector focusing, but narrower bandwidth (5-10% of center frequency).
Taylor Howard of San Andreas, California, adapted an ex-military dish in 1976 and became the first person to receive satellite television signals using it. The first satellite television dishes were built to receive signals on the C-band analog, and were very large.
Omnidirectional: Omnidirectional antenna radiates uniform power in planes described by a normal i.e. in any plane perpendicular to a normal, the radiation power would be equal in all directions. Hence the radiation pattern for a simple omnidirectional antenna resembles a “doughnut” as shown in the figure.
