What is meant by monopole 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 a quarter wave monopole antenna?
A quarter wave monopole antenna. is another simple and efficient wire. antenna which is formed by driving. a wire with a voltage between the. wire and a conducting ground plane.
Why it is important to maintain a good earth on a monopole antenna?
Monopole antennas such as quarter wave vertical antennas rely on a good earth system for their operation. In reality a good antenna RF ground system should present a low impedance for radio frequencies within the band of frequencies of interest.
Which is a non resonant antenna?
Non-resonant Antennas are those for which resonant frequency does not occur. The wave moves in forward direction and hence do not form a standing wave. They are also called as Unidirectional travelling wave antennas, as the radiated wave moves in forward direction only, which means that only incident wave is present.
What is the difference between a monopole and dipole antenna?
For a monopole antenna, the reference plane of the transmission line connection, outer conductor of a coaxial cable, is the ground plane of the monopole. Both monopole and dipole antennas exhibit similar radiation patterns and performance, except that monopole antennas are not symmetric vertically.
What is the gain of a monopole antenna?
This new structure is called a monopole antenna. The impedance of the quarter wave monopole is 50Ω. The vertical antenna is omni-directional. Because all the radiated power is now concentrated in the half-space above the ground plane, the gain of the monopole is 3 dB larger than the gain of the dipole.
How does a monopole antenna work?
The monopole is a resonant antenna; the rod functions as an open resonator for radio waves, oscillating with standing waves of voltage and current along its length. Therefore, the length of the antenna is determined by the wavelength of the radio waves it is used with.
What is the mean of monopole antenna?
A monopole antenna is basically any sort of radio transmission antenna that stands as a single column . At first glance these sorts of antennas often look like they’re just one piece, which might make them appear simpler, at least in terms of construction, to the more standard dipole antennas, which are branched with two distinctive halves.
