This process would obviously be easier than laying a wiring system throughout the area. An Antenna can be used either as a transmitting antenna or a receiving antenna.
Antenna has the capability of sending or receiving the electromagnetic waves for the sake of communication, where you cannot expect to lay down a wiring system. Radiation Mechanism The sole functionality of an antenna is power radiation or reception. Antenna is the key element of this wireless technology.
The frequency ranges of operation. In two-way communication, the same antenna can be used for both transmission and reception. The device, which converts the required information signal into electromagnetic waves, is known as an Antenna.
The evolution of wireless technology has made this whole process very simple. The device or tube, if bent or terminated to radiate energy, then it is called as waveguide.
If the power has to be radiated, though the current conduction is with uniform velocity, the wire or transmission line should be bent, truncated or terminated. The power from the transmission line travels through the waveguide which has an aperture, to radiate the energy.
You will learn about these antennas in later chapters.
A transmission line conducting current with uniform velocity, and the line being a straight one with infinite extent, radiates no power. Plural of it is, antennae or antennas. Next Page A person, who needs to convey a thought, an idea or a doubt, can do so by voice communication. A transmitting antenna is one, which converts electrical signals into electromagnetic waves and radiates them.
What is an Antenna? However, if two people want to communicate who are at longer distances, then we have to convert these sound waves into electromagnetic waves. Now-adays, antennas have undergone many changes, in accordance with their size and shape. For a transmission line, to become a waveguide or to radiate power, has to be processed as such.
Scenario In order to contact a remote area, the wiring has to be laid down throughout the whole route along the valleys, the mountains, the tedious paths, the tunnels etc. Need of Antenna In the field of communication systems, whenever the need for wireless communication arises, there occurs the necessity of an antenna.Antenna Fundamentals.
An antenna is a device for converting electromagnetic radiation in space into electrical currents in conductors or vice-versa, depending on whether it is being used for receiving or for transmitting, respectively. Passive. Antenna Fundamentals An antenna is a device for converting electromagnetic radiation in space into electrical currents in conductors or vice-versa, depending on whether it is being used for receiving or for.
An Antenna is a transducer, which converts electrical power into electromagnetic waves and vice versa. An Antenna can be used either as a transmitting antenna or a receiving antenna.
In the field of communication systems, whenever the need for wireless communication arises, there occurs the. Antenna Fundamental - Free download as PDF File .pdf), Text File .txt) or read online for free/5(14). Antenna Fundamentals.
May 3, Item Media Amplifiers, The basics of antennas can be deduced from fundamental principles of electromagnetics and electric circuits. How Does the Antenna Impedance Change with Frequency? Antenna impedance is a function of frequency.
A fundamental list of antenna theory concepts, an antenna basics menu is given here. Topics include directivity, polarization, bandwidth, impedance, frequency bands, all things necessary for an understanding of antenna theory, antenna basics .Download