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
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 ...
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...
a type of electromagnetic radiation, enable the transfer of data over the air, eliminating the need for wired connections. Think of an antenna as the “ear” or “voice” of a wireless system, capturing signals from the environment
TypesofDirectionalAntennas•Themostwell-knownreflectorantennaistheparabolicreflectorantenna,commonlyknownasasatellitedishantenna.Examplesofthisdishantennaareshown.TypesofDirectionalAntennas•Thebasicstructureofaparabolicdishantennaisshown.Itconsistsofafeedantennaandaparabolicreflector.Thefeedantennaisoftenahornantennawitha...
The most common antenna used for radio astronomy is the parabolic reflector with the feed horn or dipole located at the parabolic focus. One principal advantage of this antenna is the ease with which the receiver may be coupled to it. The input terminals are at the feed horn or dipole. ...
It also rejects the forming of beam circuits for usual base station antennas to decrease the range of passive intermediation. This kind of reflector antenna can be fed through the conventional base station’s elemental antenna, thus it is equipped through the beam tilting functionalities & radiation...
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
1x1 optical resonators have been designed based on multi-mode interference (MMI) splitters of different splitting ratios (85:25 and 73:27) and different types of back-reflectors as feedback mechanism. They are basically 2x2 MMIs of uneven splitting ratios with one of the ports from both sides...
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 ...