Antenna, component of radio, television, and radar systems that directs incoming and outgoing radio waves. Antennas are usually metal and have a wide variety of configurations, from the mastlike devices employed for radio and television broadcasting to t
The corner antenna which has two surfaces on orthogonal planes is known as a dihedral corner reflector. This antenna has two plane reflectors which form 90* a dihedral angle. This type of reflector is formed whenever two conducting sheets are perpendicularly joined & this is used majorly in an...
TypesofDirectionalAntennas•Themostwell-knownreflectorantennaistheparabolicreflectorantenna,commonlyknownasasatellitedishantenna.Examplesofthisdishantennaareshown.TypesofDirectionalAntennas•Thebasicstructureofaparabolicdishantennaisshown.Itconsistsofafeedantennaandaparabolicreflector.Thefeedantennaisoftenahornantennawitha...
Today, antennas are everywhere. From the tiny ones in our smartphones to massive satellite dishes scanning the cosmos, they come in various shapes and sizes. When exploring the types of antennas, you’ll encounter terms like dipole, monopole, Yagi, and parabolic reflectors, each designed for s...
Another one of the most common antenna designs associated with television reception is Yagi-Uda antennas, also known as directional or beam antennas. These usually consist of an array of dipole shafts and reflectors that help to focus the signal for better reception. Most are mounted on or ...
Planar Inverted-F Antennas Reflector Antennas Corner Reflector Parabolic Reflector Log-Periodic Antennas A log-periodic antenna is also named a log-periodic array. It is a multi-element, directional narrow beam antenna that works on a wide range of frequencies. This antenna is made of a series ...
A list of different antennas (antenna types) with links to detailed descriptions. Particularly, wire antennas such as the short dipole and half-wave dipole antennas are presented, aperture, patch, reflector and travelling wave antenna types are presente
This chapter discusses different types of astronomical antennas. The pattern of the pencil-beam antenna has one main lobe or maximum with a single-output terminal pair or a few main lobes each with its own separate output. The output at a single terminal pair corresponds to one main lobe for...
telecommunication antennasShortwave, microwave, cellular telephone, and other types of telecommunication antennas typically receive and send messages from atop tall buildings or higher ground. In radio transmission a radiatingantennais used to convert a time-varyingelectric currentinto anelectromagnetic wave ...
with a round encasing that serves as a parabolic reflector. The center piece acts as a regular dipole would but then bounces the signal against the sides of the dish and broadcasts it to a specific area. Parabolic dish antennas are semi-directional but offer a very good range and accuracy...