Slot Antenna Wikipedia
A slot antenna consists of a metal surface, usually a flat plate, with one or more holes or slots cut out.Wikipedia
- Antenna types
In radio systems, many different antenna types are used with specialized properties for particular applications. Antennas can be classified in various ways.Wikipedia
- Reflective array antenna
Class of directive antennas in which multiple driven elements are mounted in front of a flat surface designed to reflect the radio waves in a desired direction. They are a type of array antenna.Wikipedia
- Horn antenna
Antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are widely used as antennas at UHF and microwave frequencies, above 300 MHz.Wikipedia
- Vivaldi antenna
Co-planar broadband-antenna, which can be made from a solid piece of sheet metal, a printed circuit board, or from a dielectric plate metalized on one or both sides. Open space via a microstrip line or coaxial cable, and may be terminated with a sector-shaped area or a direct coaxial connection.Wikipedia
- Antenna (radio)
Antenna is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver. Electric current to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic waves .Wikipedia
- Conformal antenna
Flat radio antenna which is designed to conform or follow some prescribed shape, for example a flat curving antenna which is mounted on or embedded in a curved surface. Conformal antennas were developed in the 1980s as avionics antennas integrated into the curving skin of military aircraft to reduce aerodynamic drag, replacing conventional antenna designs which project from the aircraft surface.Wikipedia
Slot antennas are an about λ/2 elongated slot, cut in a conductive plate (Consider an infinite conducting sheet), and excited in the center. This slot behaves according to Babinet's principle as resonant radiator. From Wikipedia, the free encyclopedia A Vivaldi antenna or Vivaldi aerial or tapered slot antenna is a co-planar broadband- antenna, which can be made from a solid piece of sheet metal, a printed circuit board, or from a dielectric plate metalized on one or both sides. If we cut a hole in an infinite conducting plane, and feed it with a voltage source across the center, we get a slot antenna: Because the slot is between the sides of the voltage source, the currents must travel around the slot. These currents traveling over a large distance are what make it an antenna.
Slot Antenna Design
- Phased array
Electronically scanned array, a computer-controlled array of antennas which creates a beam of radio waves that can be electronically steered to point in different directions without moving the antennas. Array antenna, the radio frequency current from the transmitter is fed to the individual antennas with the correct phase relationship so that the radio waves from the separate antennas add together to increase the radiation in a desired direction, while cancelling to suppress radiation in undesired directions.Wikipedia
- Parabolic antenna
Antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio waves. Shaped like a dish and is popularly called a dish antenna or parabolic dish.Wikipedia
- Loop antenna
Radio antenna consisting of a loop or coil of wire, tubing, or other electrical conductor usually fed by a balanced source or feeding a balanced load. Within this physical description there are two distinct antenna types.Wikipedia
- Dual-band blade antenna
Dual-Band Blade Antenna, a type of commercial RF 'Blade antenna' that uses a 'plane and slot design' to get efficient omni-directional coverage at two distinctly different RF bands. It has additive properties similar to a monopole antenna.Wikipedia
- Slotted line
Slotted lines are used for microwave measurements and consist of a movable probe inserted into a slot in a transmission line. Expensive microwave power meter.Wikipedia
- Helical antenna
Antenna consisting of one or more conducting wires wound in the form of a helix. In most cases, directional helical antennas are mounted over a ground plane, while omnidirectional designs may not be.Wikipedia
- Microwave antenna
Physical transmission device used to broadcast microwave transmissions between two or more locations. In addition to broadcasting, antennas are also used in radar, radio astronomy and electronic warfare.Wikipedia
- Slotted waveguide
Waveguide that is used as an antenna in microwave radar applications. Prior to its use in surface search radar, such systems used a parabolic segment reflector.Wikipedia
- Patch antenna
Type of radio antenna with a low profile, which can be mounted on a flat surface. It consists of a flat rectangular sheet or 'patch' of metal, mounted over a larger sheet of metal called a ground plane.Wikipedia
- Turnstile antenna
Radio antenna consisting of a set of two identical dipole antennas mounted at right angles to each other and fed in phase quadrature; the two currents applied to the dipoles are 90° out of phase. The name reflects the notion the antenna looks like a turnstile when mounted horizontally.Wikipedia
- Antenna feed
Antenna feed refers to several slightly different parts of an antenna system: Converted to radiation; in a receiving antenna, the term refers to the parts of the system that convert the electric currents already collected from incoming radio waves into a specific voltage to current ratio needed at the receiver.Wikipedia
- Metamaterial antenna
Metamaterial antennas are a class of antennas which use metamaterials to increase performance of miniaturized (electrically small) antenna systems. To launch energy into free space.Wikipedia
- Passive radiator
Conductive element, typically a metal rod, which is not electrically connected to anything else. Connected to the radio receiver or transmitter through a feed line, and parasitic elements, which are not.Wikipedia
- Plasma antenna
Type of radio antenna currently in development in which plasma is used instead of the metal elements of a traditional antenna. A plasma antenna can be used for both transmission and reception.Wikipedia
- Antenna measurement
Antenna measurement techniques refers to the testing of antennas to ensure that the antenna meets specifications or simply to characterize it. Typical parameters of antennas are gain, radiation pattern, beamwidth, polarization, and impedance.Wikipedia
- Log-periodic antenna
Multi-element, directional antenna designed to operate over a wide band of frequencies. Invented by Dwight Isbell and Raymond DuHamel at the University of Illinois in 1958.Wikipedia
- Dipole antenna
Simplest and most widely used class of antenna. Any one of a class of antennas producing a radiation pattern approximating that of an elementary electric dipole with a radiating structure supporting a line current so energized that the current has only one node at each end.Wikipedia
- Antenna array
Set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves. The individual antennas (called elements) are usually connected to a single receiver or transmitter by feedlines that feed the power to the elements in a specific phase relationship.Wikipedia
- Monopole antenna
Class of radio antenna consisting of a straight rod-shaped conductor, often mounted perpendicularly over some type of conductive surface, called a ground plane. Applied, or for receiving antennas the output signal to the receiver is taken, between the lower end of the monopole and the ground plane.Wikipedia
- Whip antenna
Antenna consisting of a straight flexible wire or rod. Connected to the radio receiver or transmitter.Wikipedia
- Squint (antenna)
Offset from the normal of the plane of the antenna. Change in the beam direction as a function of operating frequency, polarization, or orientation.Wikipedia
- Folded unipole antenna
Type of monopole antenna; it consists of a vertical metal rod or mast mounted over a conductive surface called a ground plane. Surrounded by a 'skirt' of vertical wires electrically attached to the top of the mast.Wikipedia
- T-antenna
Capacitively loaded monopole wire radio antenna used in the VLF, LF, MF and shortwave bands. T-antennas are widely used as transmitting antennas for amateur radio stations, long wave and medium wave broadcasting stations.Wikipedia
- Driven element
Element in the antenna (typically a metal rod) which is electrically connected to the receiver or transmitter. Driven or excited by the RF current from the transmitter, and is the source of the radio waves.Wikipedia
Sentences forSlot antenna
- For television broadcasting specialized vertical radiators that are mostly modifications of the slot antenna or reflective array antenna are used: the slotted cylinder, zig-zag, and panel antennas.Ultra high frequency-Wikipedia
- At the top end of the band slot antennas and parabolic dishes become practical.Ultra high frequency-Wikipedia
- Parabolic ('dish') antennas are the most widely used directive antennas at microwave frequencies, but horn antennas, slot antennas and dielectric lens antennas are also used.Microwave-Wikipedia
- Behind each building was a 30.5 m (100 ft) self-supporting tower that supported a four-section aluminum RCA'Pylon' tubular slot antenna, 16.5 m (54 ft) high with a power gain of 6.Rural Radio Network-Wikipedia
- Directive antennas at SHF frequencies are mostly aperture antennas, such as parabolic antennas (the most common type), dielectric lens, slot and horn antennas.Super high frequency-Wikipedia
- The concept was an early example of what is today referred to as a slot antenna.AN/APQ-7-Wikipedia
2 Meter Slot Antenna
- This fed the antennas a single signal through a vertically oriented slot antenna, and used an effect known as 'squint' to move the beam up and down.AMES Type 85-Wikipedia
- Radar and satellite communication motivated the development of modern microwave antennas; the parabolic antenna (the most common type), cassegrain antenna, lens antenna, slot antenna, and phased array.Microwave-Wikipedia
- Slot antenna –Index of electronics articles-Wikipedia
- The radar will operate at radio frequencies of 150-1200 MHz and will use a Bow-Tie Slot antenna.RIMFAX-Wikipedia
- It has two rows of slot radiators within two waveguides.Dnestr radar-Wikipedia
- It can be used for, but is not well suited to, slotted waveguide antennas, fractal antennas or similar designs in which the component conductive elements are not rod-like.Numerical Electromagnetics Code-Wikipedia
- He developed a new type of antenna - diffraction antenna (one of its species is slot antenna).Mikhail Samoilovich Neiman-Wikipedia
- In April 2013, KRBK improved its signal coverage in this vast and mostly mountainous market through the implementation of a distributed single-frequency network, consisting of five specially engineered slot antennas positioned throughout the Ozarks.KRBK-Wikipedia
- See also Reflective array antenna and Slot antennaMicrowave Radiometer (Juno)-Wikipedia
- A slot antenna can be viewed as a dipole with opposite polarization.Dual-band blade antenna-Wikipedia
- A 60 milliwatt transmitter fed a dipole antenna consisting of two fiberglass slot antennas in the body of the satellite operating on 108.03 MHz, and four flexible whips forming a turnstile antenna were fed by a 10 milliwatt transmitter operating on 108.00 MHz.Explorer 1-Wikipedia
- The patch antenna was replaced with a slot antenna, doubling its range to 10 mi.AN/ZPY-1-Wikipedia
- The prior art includes an RF MEMS frequency tunable fractal antenna for the 0.1–6 GHz frequency range, and the actual integration of RF MEMS switches on a self-similar Sierpinski gasket antenna to increase its number of resonant frequencies, extending its range to 8 GHz, 14 GHz and 25 GHz, an RF MEMS radiation pattern reconfigurable spiral antenna for 6 and 10 GHz, an RF MEMS radiation pattern reconfigurable spiral antenna for the 6–7 GHz frequency band based on packaged Radant MEMS SPST-RMSW100 switches, an RF MEMS multiband Sierpinski fractal antenna, again with integrated RF MEMS switches, functioning at different bands from 2.4 to 18 GHz, and a 2-bit Ka-band RF MEMS frequency tunable slot antenna.Radio-frequency microelectromechanical system-Wikipedia
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