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Oct 25, 2020 · A dipole antenna, also called a doublet or dipole aerial, consists of two conductive elements like rods or wires. This antenna type emits a radiation pattern similar to an elementary electric dipole, making it both simple and widely used.
A dipole antenna is a type of RF antenna that includes two conductive elements like wires or rods where the metal wire length is half of the highest wavelength approximately in free space at the operation of frequency. At the center of the antenna, the conductive materials are separated through an insulator which is called an antenna section.
The length of the total wire, which is being used as a dipole, equals half of the wavelength (i.e., l = λ/2). Such an antenna is called as half-wave dipole antenna. This is the most widely used antenna because of its advantages. It is also known as Hertz antenna.
Dipole antennas (or such designs derived from them, including the monopole) are used to feed more elaborate directional antennas such as a horn antenna, parabolic reflector, or corner reflector. Engineers analyze vertical (or other monopole) antennas on the basis of dipole antennas of which they are one half.
The dipole antenna is similar to the short dipole except it is not required to be small compared to the wavelength (at the frequency the antenna is operating at). For a dipole antenna of length L oriented along the z-axis and centered at z=0, the current flows in the z-direction with amplitude which closely follows the following function:
Aug 25, 2023 · The term dipole means “Two poles” and it contains two similar elements like wire or rods. The length of a metal wire is about half of the maximum wavelength. In the center of the dipole antenna,...
Apr 27, 2023 · A Dipole antenna is one of the most popular kinds of antennas used in different devices and tools. It is also called a doublet. In this blog, we will discuss a dipole antenna, its design,...
Using the basic expressions for radiation derived in Section 10.1, simple short dipole antennas are shown in Section 10.2 to have stable directional properties far from the antenna (the antenna far field), and different directional properties closer than ~λ/2π (the antenna near field).
A dipole antenna is the simplest, usually the least expensive and most popular type of radio antenna used in ham radio and radio communications and has been around longer than you can remember. Before we get into what a dipole antenna is, we should understand a couple of important scientific facts about antennas in general.
Aug 18, 2023 · The dipole antenna is one of the most elemental types. It not only makes a simple and effective antenna on its own, but it also forms a basic building block for many other types of antennas. First, let’s start with some definitions of the terms we will use.
