What are the applications of monopole antenna?
Applications – Cellular and cordless telephones, walkie-talkies, CB radios, etc. As Ground Plane Radius R increases, the gain maxima shifts towards lower resonance frequency. Gain and radiation pattern of a monopole antenna on small ground plane (< λ) are similar to that of dipole antenna.
What are the advantages of monopole antenna?
Compact size printed monopole antennas are important for the wireless applications due to its advantages of easy fabrication, omnidirectional radiation and wide operation bandwidth.
What is antenna and its application?
An antenna is mainly used as a metallic device for radiating or receiving radio waves which is basically used for transmitting signals, transmitting antenna is used to transmit information and for receiving signal, receiving antenna is used at receiver end to receive signals.
What is dipole antenna and monopole antenna?
In essence, the difference between a monopole and dipole antenna, is that a dipole antenna uses an additionally radiator to generate a synthetic ground plane between the symmetric radiator elements, where a monopole antenna requires a physical ground plane. Dipoles tend to be more common.
What is the gain of monopole antenna?
The vertical dipole—or its electromagnetic equivalent, the monopole—could be considered one of the best antennas for LMR applications. It is omnidirectional (in azimuth) and, if it is a half-wavelength long, has a gain of 1.64 (or G = 2.15 dBi) in the horizontal plane.
Why do we need antenna?
Antennas are required by any radio receiver or transmitter to couple its electrical connection to the electromagnetic field. Radio waves are electromagnetic waves which carry signals through the air (or through space) at the speed of light with almost no transmission loss.
What type of antennas are used in mobile phones?
The most common outer antenna used with mobile phone is helical antenna and the most common used inner antenna type is microstrip patch antenna.
What is meant by monopole antenna?
A monopole antenna is a class of radio antenna consisting of a straight rod-shaped conductor, often mounted perpendicularly over some type of conductive surface, called a ground plane. Therefore the length of the antenna is determined by the wavelength of the radio waves it is used with.
What is the gain of a monopole antenna?
What does dBi antenna mean?
decibels relative to isotropic
The expression dBi is used to define the gain of an antenna system relative to an isotropic radiator at radio frequencies . The symbol is an abbreviation for “decibels relative to isotropic.” The dBi specification is based on the decibel , a logarithm ic measure of relative power .
What is the difference between a monopole and dipole antenna?
In essence, the difference between a monopole and dipole antenna, is that a dipole antenna uses an additionally radiator to generate a synthetic ground plane between the symmetric radiator elements, where a monopole antenna requires a physical ground plane.
How to calculate a monopole length?
Cell phones
Why do antennas need a ground plane?
for helical antennas ground plane reduces the size of the back lobe and hence the power wastage. larger the ground plane more reduction. hence improved directivity also. basically the ground plane is meant for providing a closed circuit. they are just like the common ground we select for bread boards.
What is a half wave dipole antenna?
The half wave dipole is the most popular version of the dipole antenna or aerial. As the name implies, the half wave dipole is a half wavelength long. This is the shortest resonant length that can be used for a resonant dipole. It also has a very convenient radiation pattern.