The antenna comes in various shapes, materials, and elements. 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, types, benefits and disadvantages, and many other things related to a dipole antenna.
Dipole Antenna Design, Working, Application, and Types (1).pdfGurleen Nayar
The antenna is a device that helps to send and receive signals to represent data. Germans invented the first antenna in 1888. This antenna was used for wireless communication. As time passed, different kinds of antennas were invented based on aperture, reflector, aperture, log periodic, and wire.
Antenna is used widely in the telecommunication field, military operations, and other applications. It gets an electromagnetic wave and converts it into electric signals. Some antennas receive electric signals and radiate them as electromagnetic waves. A simple radio antenna is a long straight rod. Many indoor TV antennas take the form of a dipole that is divided into 2 pieces and folded horizontally. Numerous outdoor TV antennas have more than one dipole with a central supporting rod. The different types of antenna designs include parabolic satellite dishes and circular loops of wire.
Generally, the waves emitting at the antenna from a transmitter are the same in any shape of the antenna. Different patterns of dipoles help to concentrate the signals for easy detection. This effect can be increased by adding many unconnected dummy dipoles called reflectors and directors. These dipoles bounce the signals over the actual receiving dipoles. This is similar to boosting the signals and picking weaker signals better than a simple antenna. We will further discuss the working of different kinds of antennas and the science behind their working. We will also discuss the various types of antennas and their different properties.
Important Features of Antennas
An Antenna contains many important features such as:
• Gain
The gain of an antenna is a technical measurement and the amount at which the signals are boosted. Television will pick up a poor signal without an antenna plugged in. Metal cases and other components pick up some kinds of signals by default. You need to add a proper directional antenna to gain better signals.
The gain of an antenna is often measured in decibels (DB). You will receive a better reception with a bigger gain. Outdoor antennas work more effectively than outdoor antennas.
• Directionality
Dipole is very directional and picks up incoming radio waves traveling at right angles to them. The telescopic antenna on an FM radio is less directional when the signals are strong. If the telescopic antenna is pointed straight upward, it will capture good signals from any direction.
AM antenna in the radio is very directional. While using AM, you will need to swivel the radio until it picks up strong signals. Highly directional antennas give ample benefits such as reduction in interference from unwanted sources or signals.
• Bandwidth
The bandwidth of an antenna refers to the frequency range on which it works perfectly. Broader bandwidth gives a greater range of radio waves. Broad bandwidth will be more helpful in the case of television but not in other cases like satellite communications, telephones, or cell phones.
Different Kinds of Antennas
An antenna is a tool used for receiving and transmitting signals. It comes in various shapes, sizes, and features according to the needs of the customers. We will now discuss the different types of antennas and how they work.
1. Dipole Antenna
Dipole antennas normally contain 2 similar conductive elements
hello readers i give my PPT presentation for about antenna and ther properties and working explain in this ppt
i hope you like it THANK YOU.......!!!!!!!
Dipole Antenna / Aerial Tutorial the dipole antenna or dipole aerial is a key element in the antenna environment. It can be used on its own or as part of another antenna system.
Dipole Antenna Design, Working, Application, and Types (1).pdfGurleen Nayar
The antenna is a device that helps to send and receive signals to represent data. Germans invented the first antenna in 1888. This antenna was used for wireless communication. As time passed, different kinds of antennas were invented based on aperture, reflector, aperture, log periodic, and wire.
Antenna is used widely in the telecommunication field, military operations, and other applications. It gets an electromagnetic wave and converts it into electric signals. Some antennas receive electric signals and radiate them as electromagnetic waves. A simple radio antenna is a long straight rod. Many indoor TV antennas take the form of a dipole that is divided into 2 pieces and folded horizontally. Numerous outdoor TV antennas have more than one dipole with a central supporting rod. The different types of antenna designs include parabolic satellite dishes and circular loops of wire.
Generally, the waves emitting at the antenna from a transmitter are the same in any shape of the antenna. Different patterns of dipoles help to concentrate the signals for easy detection. This effect can be increased by adding many unconnected dummy dipoles called reflectors and directors. These dipoles bounce the signals over the actual receiving dipoles. This is similar to boosting the signals and picking weaker signals better than a simple antenna. We will further discuss the working of different kinds of antennas and the science behind their working. We will also discuss the various types of antennas and their different properties.
Important Features of Antennas
An Antenna contains many important features such as:
• Gain
The gain of an antenna is a technical measurement and the amount at which the signals are boosted. Television will pick up a poor signal without an antenna plugged in. Metal cases and other components pick up some kinds of signals by default. You need to add a proper directional antenna to gain better signals.
The gain of an antenna is often measured in decibels (DB). You will receive a better reception with a bigger gain. Outdoor antennas work more effectively than outdoor antennas.
• Directionality
Dipole is very directional and picks up incoming radio waves traveling at right angles to them. The telescopic antenna on an FM radio is less directional when the signals are strong. If the telescopic antenna is pointed straight upward, it will capture good signals from any direction.
AM antenna in the radio is very directional. While using AM, you will need to swivel the radio until it picks up strong signals. Highly directional antennas give ample benefits such as reduction in interference from unwanted sources or signals.
• Bandwidth
The bandwidth of an antenna refers to the frequency range on which it works perfectly. Broader bandwidth gives a greater range of radio waves. Broad bandwidth will be more helpful in the case of television but not in other cases like satellite communications, telephones, or cell phones.
Different Kinds of Antennas
An antenna is a tool used for receiving and transmitting signals. It comes in various shapes, sizes, and features according to the needs of the customers. We will now discuss the different types of antennas and how they work.
1. Dipole Antenna
Dipole antennas normally contain 2 similar conductive elements
hello readers i give my PPT presentation for about antenna and ther properties and working explain in this ppt
i hope you like it THANK YOU.......!!!!!!!
Dipole Antenna / Aerial Tutorial the dipole antenna or dipole aerial is a key element in the antenna environment. It can be used on its own or as part of another antenna system.
It was our first real life based designing experience on this platform. From the mentioned designed we tried to develop a prototype of Dipole antenna of 600 Mhz for practical uses. For the further development we’ve a got plan to use a simulation software like CST microwave studio or ADS to simulate our developed design in the long term . We had to work very hard to complete this design in time! But in the end, the challenge and learning experience were well worth it.
Frequency-independent (FI) antennas are radiating structures capable of maintaining consistent impedance and pattern characteristics over multiple-decade bandwidths. Their finite size limits the lowest frequency of operation, and the finite precision of the center region bounds the highest frequency of operation.
In our daily life we see so many antennas everywhere, from simple radio transreceiver to big tower antennas and DTH antennas. Antenna is a magical element in the field of communication. Nobody can dream of wireless communication without the use of antennas. It’s the antenna which creates the magic in the air and makes wireless communication possible.
In this paper authors will discuss about the cellular antennas. They will concentrate mainly on fundamentals of antenna, relationship between frequency, wavelength and dipole wave propagation and parameters of antenna like Gain, VSWR, SFR and FBR etc.
Authors also discuss about types of down tilt, generic requirements of antennas, selection of antennas and beam forming and active antenna systems.
What is a Monopole Antenna | Types of Monopole AntennaGurleen Nayar
A Monopole antenna is half the size of a dipole antenna. It was first discovered by a radio expert Guglielmo Marconi in the year 1895. He patented this antenna after one year in 1896. This radio expert was successful in performing various historical experiments in the field of radio communication.
An antenna is a specialized transducer that converts radio-frequency (RF) fields into alternating current (AC) or vice-versa. ... At frequencies below 3 GHz, many different types of antennas are used. The simplest is a length of wire, connected at one end to a transmitter or receiver
Quick Way to Know about Antenna and Its TypeGurleen Nayar
An antenna plays a significant role in the realm of wireless communication. It is a metallic structure designed for receiving and transmitting a wide range of radiofrequency waves wirelessly.
This article introduces the design of the antenna and recommends two tested low-cost PCB antennas. These PCB antennas can be used with Bluetooth Low Energy (BLE) solutions. For the best performance, BLE and BLE 2.4GHz radio frequencies must be correctly matched to their antennas.
By completing this presentation will be have a clear idea about Antenna's working principles, Antenna's Types & Antenna's Parameters. At the end to this document you'll have a brief idea about Antenna's Tilt vs Distance Calculation & Cluster wise optimum Antenna Selection procedure. Impact of antenna PIM & VSWR have been described elaborately in this document as well.
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It was our first real life based designing experience on this platform. From the mentioned designed we tried to develop a prototype of Dipole antenna of 600 Mhz for practical uses. For the further development we’ve a got plan to use a simulation software like CST microwave studio or ADS to simulate our developed design in the long term . We had to work very hard to complete this design in time! But in the end, the challenge and learning experience were well worth it.
Frequency-independent (FI) antennas are radiating structures capable of maintaining consistent impedance and pattern characteristics over multiple-decade bandwidths. Their finite size limits the lowest frequency of operation, and the finite precision of the center region bounds the highest frequency of operation.
In our daily life we see so many antennas everywhere, from simple radio transreceiver to big tower antennas and DTH antennas. Antenna is a magical element in the field of communication. Nobody can dream of wireless communication without the use of antennas. It’s the antenna which creates the magic in the air and makes wireless communication possible.
In this paper authors will discuss about the cellular antennas. They will concentrate mainly on fundamentals of antenna, relationship between frequency, wavelength and dipole wave propagation and parameters of antenna like Gain, VSWR, SFR and FBR etc.
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1. Dipole Antenna: Design, Working, and Types
The antenna comes in various shapes, materials, and elements. 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, types, benefits and
disadvantages, and many other things related to a dipole antenna.
What is Dipole Antenna?
A doublet dipole or a Military coaxial dipole antenna is a kind of Radio Frequency
antenna including 2 conductive elements like wire or rods. It generates a radiation
pattern similar to an elementary electric dipole.
2. Dipole antennas are widely used for communication and other purposes. It is one
of the simplest types of antennas used for transmitting and receiving antennas.
Dipole Antenna Design
The name dipole is 2 poles and this antenna includes 2 same conductive elements
like metal wires or rods. The length of a metal wire in this dipole antenna is about
half of the maximum wavelength in free space. Feeders at the radiating and
center sections of a dipole antenna are on one side.
The conductive element in the log periodic antenna is divided in the center into 2
sections via an insulator. This portion is called an antenna section. This section is
connected to a feeder or coaxial cable in the center of an antenna. Wavelength is
the distance between the highest or lowest points.
In addition, the radiating element length can be calculated by several factors like
feed impedance and center operating frequency. The length of a dipole is a vital
parameter.
Dipole Antenna Transmitter
A dipole antenna produces radio waves at the transmitter section. A high voltage
is provided to the antenna at the preferred frequency. Voltage in the antenna
elements and current flow will produce magnetic and electric waves.
A transmitter is an important element created with a conductor. This conductor
includes electric current when the intensity of the current changes with time and
converts into RF radiation that travels in space.
Dipole antenna Receiver
In the receiver portion of the antenna, the electromagnetic waves flowing will
produce a little voltage. This will further make the antenna a source of signal for
the input of the receiver.
Antenna’s receiver does the reverse operation of the transmitter. It receives RF
radiation and converts them into electric currents with the help of an electric
circuit that is attached to the antenna.
3. The working system of a Dipole antenna
To use a dipole antenna, you need to apply an RF voltage source to the center of 2
sections. This voltage source will produce electromagnetic and radio wave signals
to be radiated outside a dipole antenna.
The voltage is minimum and the electric current is maximum in the center of the
antenna. On the contrary, the voltage is maximum and the current is minimum at
the ends of the antenna.
In short, the dipole antenna converts the signals from RF electromagnetic and
emits them at the transmitting end and converts RF electromagnetic signals into
electrical signals at the end of the receiver.
Types of Dipole Antenna
Now, we will discuss the different kinds of dipole antennas to understand this
concept better. Read below to know the different kinds of a dipole antenna in the
below section:
Folded Dipole Antenna
The folded dipole antenna is one of the most popular types. It has 2 dipole
antennas that are connected separately to make a thin wire loop. This kind of
antenna is folded backwards and contains 2 half-wave dipoles where one is
constant and the other is divided at the center part. These dipole antennas are
folded together in parallel at both ends of an antenna.
Short Dipole Antenna
As the name says, this short dipole antenna has a small length in comparison to
half a wavelength. It is a kind of simple wire antenna in which there are two ends.
One end is open circulated while the other end is fed with an AC source. Usually,
the frequency range of a short dipole antenna starts from 3 KHz and ends at
30MHz. This kind of antenna is used in various low-frequency-based receivers.
In a short dipole antenna, the antenna’s length is shorter than the wavelength.
The voltage source is connected at one end, and the lines are connected to the
other end.
4. Half-wave Dipole Antenna
The half-wave dipole antenna is a popular kind of antenna wherein the total
length is equal to the half-wavelength at the frequency of operation. This antenna
is also called a doublet or half-wavelength dipole or Hertz antenna.
There are 2-quarter wavelength conductors with the feed point at the center. This
symmetrical antenna has 2 ends connected from equal potential to the center
point.
The frequency range of a half-wave dipole antenna starts from 3 KHz and ends at
300 GHz. Many radio receivers use half-wave dipole antennas for clear
transmissions.
FM Dipole Antenna
FM dipole antenna is a cost-effective antenna that is very easy to make. Because
of affordable cost, these antennas are used widely in roof space in internal FM
antenna. The most common task of FM dipole antennas is offering better
reception of VHF FM broadcasting. They are used in FM broadcasting and their
frequency range starts from 88 MHz and goes up to 108 MHZ.
Fan Dipole Antenna
The fan dipole antenna is also known as a parallel or fanned dipole antenna. It is
a kind of multi-band antenna and is easy to design. Fan dipole antenna contains
many small dipole antennas with a similar coaxial feed line. When the signal is
transmitted, the resonating element is observed through the radio.
You can arrange the mechanical design of a fan dipole antenna in an inverted V
shape horizontally. Some arrangements can be made with the help of adjacent
spread wires in various directions. In this antenna, some elements interfere with
each other because of tight arrangement.
Advantages of Dipole Antenna
Now, we will discuss the various benefits of a dipole antenna in this section.
Some of the major benefits of a dipole antenna are:
A dipole antenna is a simple antenna used in radio receivers.
5. Even though the antenna has gaps, these gaps do not affect its
performance of the antenna.
To get the smooth working of the antenna, you must use a dipole antenna
at the resonant frequency.
It is easy to design and install a dipole antenna in various configurations
such as drooping and inverted V.
This antenna will receive the signal from all directions.
The antenna gives a radiation pattern of a donut shape.
One can reduce a dipole antenna with the help of a loading coil.
Disadvantages of Dipole Antenna
A dipole antenna has some drawbacks such as:
Low frequencies might not work in this antenna because of a long
wavelength.
The antenna will not perform well if the efficiency goes below 27 MHz
frequencies when the length of the antenna reduces.
Folded type antenna is a complicated kind of antenna. You will need
professional guidance to use a folded-type antenna.
Outdoor antennas are very bulky. It is difficult to install these bulky
antennas from one place to another.
Transporting outdoor antennas is difficult because of their heavy weight.
A dipole antenna is not efficient as a typical antenna.
An indoor dipole antenna is very small in the size.
Where is a dipole antenna used?
A dipole antenna is used for different applications such as:
A dipole antenna can be used in radio receivers and TV.
You can use a dipole antenna with many other simple antennas in different
areas.
It can be used for telecommunications and radio.
You can use a dipole antenna either as a transmitter or a receiver.
6. UHF and VHF antennas are used in different areas such as public
communication, coastal areas and land mobile communication.
Final words
This is all about a dipole antenna, its designs, working, benefits, and
disadvantages. A dipole antenna is a very popular type of antenna that can be
used for TV broadcasting and radio transmission. A Dipole antenna is an
affordable antenna used in various areas for gaining solid signals.