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Type of radio antenna consisting of a loop or coil
A loop antenna is a radio antenna consisting of a loop or coil of wire, tubing, or other electrical conductor, that for transmitting is usually fed by
Loop_antenna
Device that transmits and receives radio waves
monopole antennas Array antennas Loop antennas Parabolic antenna Traveling wave antennas Log-periodic antenna Spiral antenna Horn antenna Adcock antenna Sector
Antenna_(radio)
Magnetic core on which the windings of electric transformers and inductors are formed
Reception with Small Magnetic Loop Antenna". "The Creative Science Centre - by Dr Jonathan P. Hare". "Ferrite Rod Antenna :: Radio-Electronics.Com". Service
Ferrite_core
Antenna constructions for different applications
linear antennas are specifically made too small to resonate – short whip antennas, and unplanned random wire antennas, for example. Loop antennas ("magnetic"
Antenna_types
Antenna used with a television to receive television programs
indoor antennas are the dipole ("rabbit ears"), which work best for VHF channels, and loop antennas, which work best for UHF. Outdoor antennas on the
Television_antenna
Measurement of the direction from which a received signal was transmitted
Heinrich Hertz discovered the directionality of an open loop of wire used as an antenna. When the antenna was aligned so it pointed at the signal it produced
Direction_finding
Omnidirectional circular bent dipole antenna
design frequency. Although also a resonant antenna, the halo antenna is distinct from the full-wave loop antenna, which is almost exactly double its size
Halo_antenna
Radio antenna that sends signals in every direction
radiator antenna of AM radio station Whip antenna on a walkie-talkie In radio communication, an omnidirectional antenna is a class of antenna which radiates
Omnidirectional_antenna
Electronic equipment for finding radio sources
system. In earlier RDF systems, the operator mechanically rotated a loop antenna or solenoid and listened for peaks or nulls in the signal to determine
High-frequency direction finding
High-frequency_direction_finding
Antenna consisting of two rod-shaped conductors
and telecommunications, a dipole antenna or doublet is one of the two simplest and most widely used types of antenna; the other is the monopole.[full
Dipole_antenna
Type of radio antenna
A quad antenna is a type of directional wire radio antenna used on the HF and VHF bands. A quad is a Yagi–Uda antenna ("Yagi") made from loop elements
Quad_antenna
Type of antenna
The regenerative loop antenna can consist of a tuned signal winding on an open X frame with a feed back winding in close proximity. High effective gain
Regenerative_loop_antenna
Type of radio direction finder
systems used very large rotating loop antennas, which the B–T system replaced with two fixed antennae and a small rotating loop, known as a radiogoniometer
Bellini–Tosi_direction_finder
German physicist (1857–1894)
from a Ruhmkorff coil. He received the waves with a resonant single-loop antenna with a micrometer spark gap between the ends. This experiment produced
Heinrich_Hertz
Rectangular two-element array antenna
The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. It takes its name from
Moxon_antenna
Telecommunications device
An antenna tuner, a matchbox, transmatch, antenna tuning unit (ATU), antenna coupler, or feedline coupler is a device connected between a radio transmitter
Antenna_tuner
Dipole antenna optimized for operation in the High Frequency bands
this antenna in 1946. It is very popular in the United States. The antenna can be erected as horizontal dipole, as sloper, or an inverted-V antenna. With
G5RV_antenna
Limit between near field and far field in an antenna
is the largest dimension of the radiator (in the case of a magnetic loop antenna, the diameter) and λ {\displaystyle {\lambda }} is the wavelength of
Fraunhofer_distance
Radio antenna on a vehicle for wireless keys
compact size, and ease of integration. Printed loop antennas consist of a closed conductive trace forming a loop on the PCB. They are widely used in early
Automotive RKE receiver antenna
Automotive_RKE_receiver_antenna
3–30 kHz range of the electromagnetic spectrum
transformer, a loading coil and a large wire antenna. Receivers employ an electric field probe or magnetic loop antenna, a sensitive audio preamplifier, isolating
Very_low_frequency
Radio antenna which has greater performance in specific alignments
directional antenna or beam antenna is an antenna that radiates or receives greater radio wave power in specific directions. Directional antennas can radiate
Directional_antenna
Radio antenna that radiates extremely low frequency electromagnetic waves
electricity flows in a giant loop between the electrodes through the ground, radiating ELF waves, so the ground is part of the antenna. To be most effective
Ground_dipole
Type of electrical resistance from an antenna
resistance is that part of an antenna's feedpoint electrical resistance caused by the emission of radio waves from the antenna. A radio transmitter applies
Radiation_resistance
Non-commercial use of the radio spectrum
also affect transmissions: The United Kingdom measures at the point the antenna is connected to the signal feed cable, which means the radio system may
Amateur_radio
Pictogram used to represent various electrical and electronic devices or functions
(IEEE-style) Microphone (IEC-style) General antenna (IEC-style) Dipole antenna (IEC-style) Loop antenna (IEC-style) Loop antenna (IEEE-style) Cable, Shielded 1 conductor
Electronic_symbol
30–300 kHz range of the electromagnetic spectrum
ferrite loop antennas are far more popular because of their small size. Amateur radio operators have achieved good LF reception using active antennas: A short
Low_frequency
Type of radio antenna array, used mainly for early radio navigation
this problem by replacing the loop antennas with symmetrically inter-connected pairs of vertical monopole or dipole antennas of equal length. This created
Adcock_antenna
Electronic musical instrument
usually consists of two metal antennas that function not as radio antennas but rather as position sensors. Each antenna forms one half of a capacitor
Theremin
Electrically conductive surface, usually connected to electrical ground
an antenna, to reflect the radio waves from the other antenna elements. In monopole antennas the ground plane is connected to one side of the antenna feedline
Ground_plane
Marine or aircraft radio-navigation instrument
contained a rotating loop or ferrite loopstick aerial driven by a motor which was controlled by the receiver. Like the RDF, a sense antenna verified the correct
Automatic_direction_finder
American electrical engineer and inventor (1877–1956
filed a patent for a "Magnetic Aerial" (a loop aerial) which was granted on January 21, 1908. Pickard's loop antenna had directional properties that could
Greenleaf_Whittier_Pickard
1970 offshore pirate radio
and was equipped with an unusual horizontal loop antenna. The reasons for installing this type of antenna were also idealistic as well as technical. All
Capital_Radio_(pirate)
US Army Air Forces aircraft that crashed during WWII in the Libyan desert
probably took a reciprocal reading off the back of the radio directional loop antenna from a position beyond and south of Benina but 'on course'. The pilot
Lady_Be_Good_(aircraft)
Use of radio-frequency electromagnetic waves to determine position on the Earth's surface
normally used a loop antenna, a small loop of metal wire that is mounted so it can be rotated around a vertical axis. At most angles the loop has a fairly
Radio_navigation
Regions of an electromagnetic field
The electric field of a linear antenna gains its corresponding magnetic field, and the magnetic field of a loop antenna gains its electric field. It can
Near_and_far_field
Navigation system formerly used by aircraft
low-frequency stations used crossed loop antennas, but later designs for many stations used the Adcock vertical antenna array for improved performance, especially
Low-frequency_radio_range
1949 portable radio
clearly. In addition, the loop antenna was part of the resonant tuning circuit, resulting in near-unity coupling between the antenna and the detector, which
Radio_hat
Set of multiple antennas which work together
An antenna array (or array antenna) is a set of multiple connected antennas which work together as a single antenna, to transmit or receive radio waves
Antenna_array
The Sloper Antenna is a slanted Dipole antenna. While horizontal dipoles required two large support masts, this antenna type only needs one large mast
Sloper_antenna
Method of radio direction finding
the rotation of the antenna with the rotation of a small coil of wire connected to two non-moving loop antennas. The loop antennas were similar to those
Doppler radio direction finding
Doppler_radio_direction_finding
Radio transmission using wavelengths 200-1000 m
antennas include broadband untuned loops, elongated terminated loops, wave antennas (e.g. the Beverage antenna) and the ferrite sleeve loop antenna.
Medium_wave
Type of radio-wave propagation
antenna mast. An alternative configuration consists of a transmitting loop antenna which is configured for maximum signal transmission upwards. International
Near vertical incidence skywave
Near_vertical_incidence_skywave
Passive two-terminal electrical component that stores energy in its magnetic field
Magnetic Loop Antenna. Ostrava, Czech Republic: EDUCA TV o.p.s. Values of π D {\displaystyle \pi D} up to 1⁄3 wavelength are feasible antennas, but for
Inductor
Shortwave antenna
Isotron is the trade name for a shortwave antenna marketed by Bilal Co. for use as an amateur radio transmitting antenna for restricted spaces. It is physically
Isotron
3-30 Hz range of the electromagnetic spectrum
research by atmospheric scientists. Because of the difficulty of building antennas that can radiate such long waves, ELF waves have been used in only very
Extremely_low_frequency
Tool to track the movement and behavior of animals
tagging. Whip antennas are an omni-directional transmitter design that produces more signal over a greater distance. A harness loop antenna design, implemented
Wildlife_radio_telemetry
Electrical component
currents in it, a process called induction heating. Loop antenna - a coil which serves as a radio antenna, to convert radio waves to electric currents. Rogowski
Electromagnetic_coil
Burst of electromagnetic energy
include a large low-inductance capacitor bank discharged into a single-loop antenna, a microwave generator, and an explosively pumped flux compression generator
Electromagnetic_pulse
American aviation pioneer (1897–1937)
In theory, the plane could listen for the signal while rotating its loop antenna; a sharp minimum indicates the direction of the RDF beacon. The Electra's
Amelia_Earhart
Antenna testing techniques
are valid for any type of antenna. It can be as well a dipole antenna, a loop antenna, a parabolic antenna, or an antenna array. From this formula, it
Antenna_measurement
Device for receiving radio transmissions
the antenna back and forth, creating an oscillating voltage. The antenna may be enclosed inside the receiver's case, as with the ferrite loop antennas of
Radio_receiver
Electronic component
is a rectenna (rectifying antenna) that works with visible or infrared light. A rectenna is a circuit containing an antenna and a diode, which turns electromagnetic
Optical_rectenna
German Armored Fighting Vehicle
variant with radio equipment, which can be recognized by a surrounding loop antenna. Since the vehicles in no way corresponded to the desired new type of
Daimler_DZVR_21
Early radio navigation system in the UK
loop antenna from the vehicle to the beacon. The station broadcast a continuous AM longwave signal at 288.5 kHz (1040 m) through a large loop antenna
Orfordness_Beacon
2021 railway crash in the United Kingdom
train if it passes over two on-track loop antennas above a certain speed. When a train passes over the first loop, an onboard timer is started; if the
Kirkby_train_crash
Discrete device in an electronic system
Light dependent resistor (LDR) Antennas transmit or receive radio waves Elemental dipole Yagi Phased array Loop antenna Parabolic dish Log-periodic dipole
Electronic_component
Type of amateur racing sport
approaches are to use either a small loop antenna or an even smaller loop antenna wound around a ferrite rod. These antennas have a bidirectional receiving
Amateur radio direction finding
Amateur_radio_direction_finding
TV set with integrated Internet features
smart TV, being able to eavesdrop on private conversations. A common loop antenna may be set for a bidirectional transmission channel, capable of uploading
Smart_TV
Armoured car
Left: a Kfz 13; right: an armoured Sd.Kfz. 232 with large loop antenna (6-wheeled radio and command vehicle)
Kfz_13
Class of radio antenna
A monopole antenna is a class of radio antenna consisting of a straight rod-shaped conductor, often mounted perpendicularly over some type of conductive
Monopole_antenna
Volunteer-run lightning detection network
choice between a rod antenna, which detects the electric field, and/or a magnetic antenna, which detects the H-field. The electric antenna does not provide
Blitzortung
Antenna with a fractal shape
A fractal antenna is an antenna that uses a fractal, self-similar design to maximize the effective length, or increase the perimeter (on inside sections
Fractal_antenna
Television content transmitted via signals in the air
terrestrial (Earth-based) transmitter of a TV station to a TV receiver having an antenna. The term terrestrial is more common in Europe and Latin America, while
Terrestrial_television
Device for suppressing part of a signal
garnet sits on a strip of metal driven by a transistor, and a small loop antenna touches the top of the sphere. An electromagnet changes the frequency
Filter_(signal_processing)
Range 30-300 Hz of the electromagnetic spectrum
inefficient antennas can be used. Radio amateurs have received signals in this range using simple receivers built around personal computers, with coil or loop antennas
Super_low_frequency
Radio navigation system
beacon can be measured by using a simple mechanism known as a loop antenna. As the antenna is rotated around a vertical axis, the strength of the received
Sonne_(navigation)
Type of plane curve
Cardioid microphone Lemniscate of Bernoulli Loop antenna Radio direction finder Radio direction finding Yagi antenna Giovanni Salvemini Weisstein, Eric W. "Parabola
Cardioid
Hertz used spark-excited dipole antennas to generate the waves and micrometer spark gaps attached to dipole and loop antennas to detect them. These precursor
History_of_radio_receivers
transmitter) and observing the sparks created between the gap in a nearby metal loop antenna, between 1886 and 1888 Hertz would conduct a series of scientific experiments
Invention_of_radio
Luftwaffe usage of radio equipment during World War II
A "flat" equivalent of a D/F loop was used for the Peilgerät device to reduce drag over a protruding D/F loop antenna, and made up of a series of metal
Luftwaffe radio equipment of World War II
Luftwaffe_radio_equipment_of_World_War_II
Lower bound on the quality factor of small radio antennae
the order 10%. Underhill and Harper claim that an electrically small loop antenna can violate the Chu limit Bing, Benny (2008). Emerging Technologies in
Chu–Harrington_limit
Passport issued to German citizens
card) chip and 13.56 MHz loop antenna embedded into the front cover page, in accordance with ICAO standards. The chip and antenna are not easily visually
German_passport
Hungarian light tank of World War II
radios were also changed from R/5 radios with loop antennas to improved R/5a radios with stick antennas. 42M Toldi IIA (B40) - modification developed
38M_Toldi
Type of radio antenna
A Yagi–Uda antenna, or Yagi antenna, is a directional antenna consisting of two or more parallel resonant antenna elements in an end-fire array; these
Yagi–Uda_antenna
Shoplifting prevention mechanism
Jiang, J.; Rafique, U.; Eric, D. (October 2020). "Modified Planar Square-Loop Antenna for Electronic Article Surveillance Radio Frequency Identification Applications"
Electronic article surveillance
Electronic_article_surveillance
Multi-element, directional antenna useable over a wide band of frequencies
A log-periodic antenna (LP), also known as a log-periodic array or log-periodic aerial, is a multi-element, directional antenna designed to operate over
Log-periodic_antenna
Definitions of terms used in amateur radio
Long Wire Antenna An antenna that is a quarter wavelength or longer and is driven at one end and open at the other. Loop Antenna A type of antenna that consists
Glossary_of_amateur_radio
Type of mediumwave radio reception
box loop or outdoor longwire antenna. At the lower end of the spectrum, a portable radio with a larger-than-normal internal ferrite core antenna designed
MW_DX
Simple radio receiver circuit for AM reception
they used a ferrite core loop antenna, which was more compact than the previous air core coils, also functioned as an antenna, and eliminated the need
Crystal_radio
Aviation navigation system
antenna in a DVOR uses an omnidirectional antenna. These are usually Alford Loop antennas (see Andrew Alford). Unfortunately, the sideband antennas are
VHF_omnidirectional_range
Hypothetical wave source which radiates equally in all directions
type sin θ {\textstyle \sin \theta } such as short dipoles or small loop antennas. The parameter used to define accuracy in the measurements is called
Isotropic_radiator
German rigid airship (1928–1940)
receiver for 10 to 280 m (high frequency). A radio direction finder used a loop antenna to determine the airship's bearing from any land radio station, or a
LZ_127_Graf_Zeppelin
Wireless protocol
approximately 10,000 square feet (900 m²), using volumetric loop antennas — From even a small volumetric antenna of 1 sq ft (900 cm²), RuBee can read a tag within
RuBee
Use of multiple antennas in radio
multiplies the capacity of a radio link using multiple transmit and receive antennas. MIMO has become a core technology for broadband wireless communications
MIMO
Scottish physicist who pioneered radio direction-finding and radar (1892–1973)
ranges up to 2,500 km (1500 miles). Location was determined by rotating a loop antenna to maximize (or minimise) the signal, thus "pointing" to the storm. The
Robert_Watson-Watt
British twin-engined torpedo bomber of the WWII era
on late Mk Is included replacing the elongated direction finding antenna with a loop aerial enclosed in a clear, tear-drop fairing on the top of the cabin
Bristol_Beaufort
300–3000 kHz range of the electromagnetic spectrum
the rod points exactly at the transmitter. Other types of loop antennas and random wire antennas are also used. Electromagnetic spectrum Global Maritime
Medium_frequency
Capacitor whose capacitance can be changed
advantages for makeshift or home construction, and may be found in resonant-loop antennas or crystal radios. Small variable capacitors operated by screwdriver
Variable_capacitor
Computer-aided-design software for evaluating electromagnetic devices
Pei-Ji (27 August 2014). "Small-size adjustable LTE/WWAN coupled-fed loop antenna for mobile handset applications". Microwave and Optical Technology Letters
Sim4Life/SEMCAD
Passport of the Republic of Kenya issued to Kenyan citizens
card) chip and 13.56 MHz loop antenna embedded in the front cover page, in accordance with ICAO standards. The chip and antenna and are not visually recognized
Kenyan_passport
Radio transmitter which emits radio waves in all directions, used as a navigational aid
other submarines or aircraft, which were equipped with DF receivers and loop antennas. NDBs typically operate in the frequency range from 190 kHz to 535 kHz
Non-directional_beacon
Francis FitzGerald publishes a formula for the power radiated by a small loop antenna, showing it as proportional to the fourth power of the frequency. 1884:
Timeline_of_radio
2006 mobile phone from Kyocera Wireless
keypad, built-in polyphonic ring tones, screen savers, caller alerts, a loop antenna, speaker phone, headset jack, and a VGA camera with flash and 5x zoom
Kyocera_Strobe
American electrical engineer and academic
Circularly Symmetric High-Impedance Surfaces for Loop Antenna Applications," in IEEE Transactions on Antennas and Propagation, vol. 64, no. 2, pp. 618–29,
Constantine_A._Balanis
Type of radio transmitter
electromagnetic waves, and George Fitzgerald had calculated the output power of a loop antenna. Fitzgerald in a brief note published in 1883 suggested that electromagnetic
Spark-gap_transmitter
Heavy duty bus
in 2006. The Changes in 2008 is the replacement of the power antenna with the loop antenna. Diesel versions now comes with D6GA producing 250-255hp, D6GB
Hyundai_Green_City
Signal processing technique for sensor arrays
transmission or reception. This is achieved by combining elements in an antenna array in such a way that signals at particular angles experience constructive
Beamforming
Pocket-sized card with authentication circuitry
an antenna to communicate. Like smart cards with contacts, contactless cards do not have an internal power source. Instead, they use a loop antenna coil
Smart_card
Radio signal filtering device
preselector is a name for an electronic device that connects between a radio antenna and a radio receiver. The preselector is an adjustable band-pass filter
Preselector
American television network
Antenna TV is an American digital television network owned by Nexstar Media Group. The network's programming consists of classic television series, primarily
Antenna_TV
LOOP ANTENNA
LOOP ANTENNA
Surname or Lastname
English
English : possibly from the Old Norse personal name Tópi, Túpi, a short form of a personal name formed with þórr, name of the Norse god of thunder (see Thor) + a second element with initial b-, for example björn ‘bear’, ‘warrior’. On the other hand, the name is found mainly in Dorset and Devon, which are far from areas of Scandinavian settlement.
Male
Dutch
, Jehovah's gift (or grace).
Boy/Male
Arabic
The Biblical Lot is the English Language Equivalent
Boy/Male
Hebrew
God will multiply.
Boy/Male
Hindu
Flower
Girl/Female
Gujarati, Hindu, Indian
Look
Boy/Male
Bengali, Indian
Loop; Autumn
Surname or Lastname
Dutch
Dutch : from a short form of the Germanic personal name Robrecht.Altered spelling of German Rupp.English : variant spelling of Roope.
Boy/Male
Hindu, Indian, Rajasthani, Sindhi, Traditional
Look; Beauty; Appearance
Surname or Lastname
English (Somerset)
English (Somerset) : habitational name from Look in Puncknowle, Dorset, named in Old English with lūce ‘enclosure’.English : possibly a variant of Luck 3.Northern English and Scottish : from a vernacular pet form of Lucas.Dutch (van Look) : topographic name from look ‘enclosure’ or habitational name from a place named with this word.Thomas Look (b. c. 1622) was in Lynn, MA, by 1646. His son, also called Thomas (b. 1646), moved to Martha’s Vineyard about 1670.
Boy/Male
British, English
Barrel Maker
Boy/Male
Indian, Sanskrit
Natural; Original; Innate; Simply; Loop
Girl/Female
Hindu
Look, Blessed with beauty, Shape, Beauty
Boy/Male
Hindu, Indian
Look
Male
French
French form of Latin Lupus, LOUP means "wolf."
Surname or Lastname
English
English : metonymic occupational name for a cooper, from Middle English coupe ‘tub’, ‘container’ (see Cooper). In some cases the surname may have been derived from a pub or house sign.Dutch : from koop ‘purchase’, ‘bargain’, hence a nickname for a haggler or a metonymic occupational name for a merchant.
Girl/Female
Arabic, Muslim
Look
Surname or Lastname
North German
North German : habitational name from any of several places called Loose or Loosey.North German : from a short form of Nikolaus, German form of Nicholas.Dutch : nickname from the adjective loos ‘cunning’, ‘artful’, ‘guileful’.English : variant spelling of Loose.
Boy/Male
Dutch, German, Hebrew
God will Multiply; God will Add
Girl/Female
Tamil
Look, Blessed with beauty, Shape, Beauty
LOOP ANTENNA
LOOP ANTENNA
Girl/Female
Hindu
Pure, Clean, Spotless, Without blemish
Girl/Female
Christian & English(British/American/Australian)
White, Fair
Girl/Female
Australian, French, Italian
Female Version of Abraham
Girl/Female
German, Turkish
Shining Like a Moon
Girl/Female
Muslim/Islamic
Dawn
Female
Scottish
 Scottish name ILKA means "of the same class." Compare with another form of Ilka.
Boy/Male
Hindu, Indian, Sanskrit
Watchful; Bright
Girl/Female
Muslim
The 45th surah, One who kneels (1)
Surname or Lastname
English
English : nickname for a carefree person, from Old English carlēas (a compound of caru ‘grief’, ‘care’ + lēas ‘free from’, ‘without’).
Boy/Male
Hindu, Indian
Name of a Star
LOOP ANTENNA
LOOP ANTENNA
LOOP ANTENNA
LOOP ANTENNA
LOOP ANTENNA
v. t.
To make a loop of or in; to fasten with a loop or loops; -- often with up; as, to loop a string; to loop up a curtain.
n.
Hence; Appearance; aspect; as, the house has a gloomy look; the affair has a bad look.
pl.
of Trou-de-loup
v. t.
To beat in the game of loo by winning every trick.
v. i.
To seem; to appear; to have a particular appearance; as, the patient looks better; the clouds look rainy.
v. i.
To direct the attention (to something); to consider; to examine; as, to look at an action.
n.
The act of looking; a glance; a sight; a view; -- often in certain phrases; as, to have, get, take, throw, or cast, a look.
n.
Any one of several aquatic, wed-footed, northern birds of the genus Urinator (formerly Colymbus), noted for their expertness in diving and swimming under water. The common loon, or great northern diver (Urinator imber, or Colymbus torquatus), and the red-throated loon or diver (U. septentrionalis), are the best known species. See Diver.
n.
See Loon, the bird.
v. t.
To express or manifest by a look.
v. t.
To let hang down; as, to lop the head.
v. t.
To influence, overawe, or subdue by looks or presence as, to look down opposition.
n.
See 1st Loop.
n.
A curve of any kind in the form of a loop.
n.
Expression of the eyes and face; manner; as, a proud or defiant look.
v. t.
To bind or fasten with hoops; as, to hoop a barrel or puncheon.
v. t.
To look at; to turn the eyes toward.
v. t.
To confine in a coop; hence, to shut up or confine in a narrow compass; to cramp; -- usually followed by up, sometimes by in.
v. t.
To break over the poop or stern, as a wave.
n.
A ring; a circular band; anything resembling a hoop, as the cylinder (cheese hoop) in which the curd is pressed in making cheese.