Category: News

Home » Archive by Category "News"

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 – […]

Ferrite Rod Antenna: ferrite bar aerial

Notes about the ferrite rod antenna or ferrite bar aerial, a form of RF antenna that is widely used in RFID and portable transistor radio applications. The ferrite rod aerial or ferrite bar antenna is […]

Vertical Antennas: types, advantages, performance

The performance of vertical antennas lends itself well to many applications – in mobile applications their omnidirectional performance is key. But verticals provide more than just this. Vertical antennas form a widely used form of […]

Antenna Theory – Fundamentals

A person, who needs to convey a thought, an idea or a doubt, can do so by voice communication. The following illustration shows two individuals communicating with each other. Here, communication takes place through sound waves. However, […]

Antenna Theory: aerial basics

Antennas are a key element of any radio system. An antenna is required to radiate and receive the signals and therefore their performance is key to the operation of the overall radio system. If the […]