Plasma antennas represent a transformative approach in the manipulation and propagation of electromagnetic waves. By utilising ionised gases instead of traditional metallic elements, these antennas ...
Antennas can be designed to transmit and receive radio waves in all horizontal directions equally (omnidirectional antennas), or preferentially in a particular direction (directional, or high-gain, or "beam" antennas).
antenna, component of radio, television, and radar systems that directs incoming and outgoing radio waves.
That's more or less what an antenna (sometimes called an aerial) does: it's the metal rod or dish that catches radio waves and turns them into electrical signals feeding into something like a radio or television or a telephone system. Antennas like this are sometimes called receivers.
Antennas are designed to transmit and receive EM waves at specific frequencies. Their design is also determined by such factors as direction, movement and signal strength. This is why antennas come in so many different shapes and sizes.
It is fitting in a book about wireless communication to look at the phenomena that lets us transfer information from one point to another without any physical medium—the propagation of radio waves. If ...
Queen Mary University of London: ESoA third in a series course on Antennas and Propagation for Body-Centric Wireless Communications
The European School of Antennas (ESoA) presents a third course in a series on Antennas & Propagation for Body-Centric Wireless Communication. The course addresses the main issues related to ...
ESoA third in a series course on Antennas and Propagation for Body-Centric Wireless Communications
EurekAlert!: UESTC researchers develop a new phased array antenna for millimeter-wave communications
Radio waves should really be called electromagnetic or EM waves simply because they consist of a magnetic field and an electric field. A signal from a transmitter applied to an antenna generates the ...