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Distributed Antenna System (DAS)

A distributed antenna system (DAS) is a network of spatially or geographically separated antenna nodes that are connected to a common source through a transport or communication medium in order to provide wireless communication service in a […]

SCADA: Alive and Well in the Age of IoT

When most people think of the Internet of Things (IoT), home automation is what comes to mind. But in terms of complexity, home automation is a simple network compared with applications in “smart” cities, huge […]

The Dipole Antenna

In this section, the dipole antenna with a very thin radius is considered. 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 […]

Dipole Antenna: Dipole Aerial

The dipole antenna or dipole aerial is one of the most important forms of RF antenna. The dipole can be used on its own, or it can form part of a more complicated antenna array. […]

What is a Yagi Antenna?

A Yagi antenna or a Yagi-Uda antenna, is a directional antenna that radiates signals in one main direction. It consists of a long transmission line with a single driven element consisting of two rods connected […]

Yagi Antenna / Yagi-Uda Aerial

The Yagi antenna or aerial sometimes called the Yagi-Uda antenna is widely used where gain and directivity are required from an RF antenna design. The Yagi antenna or Yagi-Uda antenna or aerial is a particularly […]

RF Systems

The radio-frequency system, or RF system, supplies power to the ALS in the form of microwaves. Microwaves are radio waves with a wavelength between about one meter and one millimeter, which are the wavelengths used […]

Antenna Theory – Basic Parameters

The basic communication parameters are discussed in this chapter to have a better idea about the wireless communication using antennas. The wireless communication is done in the form of waves. Hence, we need to have […]

Distributed Antenna System DAS Technology

The concept of a Distributed Antenna System, DAS has many advantages in some applications. A Distributed antenna system, DAS is a network of antennas spaced apart from each other, but connected to a common source. […]

The Concept of Cellular Base Station Antennas

Cellular antenna concepts: Cellular antennas are a familiar feature in nearly every corner of the world. In many cases, these are cellular networks that bring new connectivity where it had never before been possible – […]