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Structure that guides waves efficiently
A waveguide is a structure that guides waves by restricting the direction of transmission of energy. Common types of waveguides include acoustic waveguides
Waveguide
Hollow metal pipe used to carry radio waves
and communications engineering, a waveguide is a hollow metal pipe used to carry radio waves. This type of waveguide is used as a transmission line mostly
Waveguide_(radio_frequency)
Electronic filter that is constructed with waveguide technology
A waveguide filter is an electronic filter constructed with waveguide technology. Waveguides are hollow metal conduits inside which an electromagnetic
Waveguide_filter
Physical structure guiding light waves
fiber waveguides, transparent dielectric waveguides made of plastic and glass, liquid light guides, and liquid waveguides. Optical waveguides are used
Waveguide_(optics)
Connector for joining two waveguides
A waveguide flange is a connector for joining sections of waveguide, and is essentially the same as a pipe flange—a waveguide, in the context of this
Waveguide_flange
Type of planar transmission line
Coplanar waveguide is a type of electrical planar transmission line which can be fabricated using printed circuit board technology, and is used to convey
Coplanar_waveguide
Electromagnetic wave with oscillations perpendicular to the direction of travel
the waveguide. For example, a radio wave in a hollow metal waveguide must have zero tangential electric field amplitude at the walls of the waveguide, so
Transverse_mode
Type of antenna used for various communication
are often conducted by a waveguide, and the antenna consists of slots in the waveguide; this is called a slotted waveguide antenna. Multiple slots act
Slot_antenna
Frequency response boundary
attenuation, which for example may be 30 dB or 100 dB. In the case of a waveguide or an antenna, the cutoff frequencies correspond to the lower and upper
Cutoff_frequency
A slot-waveguide is an optical waveguide that guides strongly confined light in a subwavelength-scale low refractive index region by total internal reflection
Slot-waveguide
Synthesis of audio using a digital waveguide
Digital waveguide synthesis is the synthesis of audio using a digital waveguide. Digital waveguides are efficient computational models for physical media
Digital_waveguide_synthesis
Waveguide formed by posts inserted in a dielectric substrate
substrate-integrated waveguide (SIW) (also known as post-wall waveguide or laminated waveguide) is a synthetic rectangular electromagnetic waveguide formed in a
Substrate-integrated waveguide
Substrate-integrated_waveguide
Signal to radar antenna coupler
Waveguide rotary joints or RF Rotary Joints are used in e. g. radar sensors to couple RF and/or other signals from transmitters and receivers of Primary
Waveguide_rotary_joint
Subwavelength-structured waveguides
meta-waveguide is a physical structures that guides electromagnetic waves with engineered functional subwavelength structures. Meta-waveguides are the
Meta-waveguide
The Earth–ionosphere waveguide is the phenomenon in which certain radio waves can propagate in the space between the ground and the boundary of the ionosphere
Earth–ionosphere_waveguide
American radio engineer (1890-1972)
American radio engineer best known for his role in the development of waveguides in the early 1930s. Southworth was born in Little Cooley, Pennsylvania
George_Clark_Southworth
Electronic circuit in which a signal entering any port exits at the next port
Optical circulators have similar behavior. Ports are where an external waveguide or transmission line, such as a microstrip line or a coaxial cable, connects
Circulator
Analytical method
rectangular dielectric optical waveguides . It was published by Enrique Marcatili in 1969. Optical dielectric waveguides guide electromagnetic waves in
Marcatili's_method
Type of optical waveguide
plasmonic waveguide is an optical waveguide that achieves strong light confinement by coupling the light guided by a dielectric waveguide and a plasmonic
Hybrid_plasmonic_waveguide
Physical structure for guiding sound waves
An acoustic waveguide is a physical structure for guiding sound waves, i.e., a waveguide used in acoustics. One example is a speaking tube used aboard
Acoustic_waveguide
Radio frequency
The waveguide D band is the range of radio frequencies from 110 GHz to 170 GHz in the electromagnetic spectrum, corresponding to the recommended frequency
D_band_(waveguide)
In optics, an ARROW (anti-resonant reflecting optical waveguide) is a type of waveguide that uses the principle of thin-film interference to guide light
ARROW_waveguide
Funnel-shaped waveguide radio device
antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are widely used
Horn_antenna
A beam waveguide antenna is a particular type of antenna dish, at which waveguides are used to transmit the radio beam between the large steerable dish
Beam_waveguide_antenna
An atmospheric waveguide is an atmospheric flow feature that improves the propagation of certain atmospheric waves. The effect arises because wave parameters
Atmospheric_waveguide
Banded waveguides synthesis is a physical modeling synthesis method to simulate sounds of dispersive sounding objects, or objects with strongly inharmonic
Banded_waveguide_synthesis
Phenomenon in optics
Guided-mode resonance or waveguide-mode resonance is a phenomenon wherein the guided modes of an optical waveguide can be excited and simultaneously extracted
Guided-mode_resonance
Optical multiplexer component
Arrayed waveguide gratings (AWG) are commonly used as optical (de)multiplexers in wavelength division multiplexed (WDM) systems. These devices are capable
Arrayed_waveguide_grating
Optical waveguide
A zero-mode waveguide is an optical waveguide that guides light energy into a volume that is small in all dimensions compared to the wavelength of the
Zero-mode_waveguide
Effect of a material on light
refractive index with optical frequency. However, in a waveguide there is also the phenomenon of waveguide dispersion, in which case a wave's phase velocity
Dispersion_(optics)
Use of plasmons for data transmission in circuits
fibers and coupled-resonator waveguides. This design can result in the previously mentioned hybrid plasmonic waveguide, which exhibits subwavelength
Plasmonics
Set of waveguides including a closed loop
An optical ring resonator, or micro-ring resonator (MRR) is a set of waveguides in which at least one is a closed loop coupled to light input and output
Optical_ring_resonators
An erbium-doped waveguide amplifier (or EDWA) is a type of an optical amplifier enhanced with erbium. It is a close relative of an EDFA, erbium-doped
Erbium-doped waveguide amplifier
Erbium-doped_waveguide_amplifier
Finnish manufacturer of loudspeakers
Genelec Oy is a manufacturer of active loudspeaker systems based in Iisalmi, Finland. It designs and produces products for professional studio recording
Genelec
Radio frequency from 60 to 90 GHz
The waveguide E band is the range of radio frequencies from 60 GHz to 90 GHz in the electromagnetic spectrum, corresponding to the recommended frequency
E_band_(waveguide)
Transmission lines with flat ribbon-like conducting or dielectric lines
and waveguide is used instead. Waveguide, however, is bulkier and more expensive to manufacture. At still higher frequencies dielectric waveguide (such
Planar_transmission_line
Point of entry and exit of electrical energy to/from a circuit
be extended to waveguides, but the definition in terms of current is not appropriate and the possible existence of multiple waveguide modes must be accounted
Port_(circuit_theory)
Quartz substrate of an integrated waveguide optical power distribution device
known as a beam splitter, is based on a quartz substrate of an integrated waveguide optical power distribution device, similar to a coaxial cable transmission
Fiber-optic_splitter
Cable or conductor connecting a radio transmitter to an antenna
special type of cable called transmission line. At microwave frequencies, waveguide is often used, which is a hollow metal pipe carrying radio waves. In a
Antenna_feed
Light-conducting fiber
phenomenon of total internal reflection which causes the fiber to act as a waveguide. Fibers that support many propagation paths or transverse modes are called
Optical_fiber
Loudspeaker using an acoustic horn
have some pattern control, and all waveguides provide a degree of acoustic loading, so the difference between a waveguide and a horn is a matter of judgement
Horn_loudspeaker
Range 3-30 GHz of the electromagnetic spectrum
type of metal pipe called waveguide must be used. Because of the high cost and maintenance requirements of long waveguide runs, in many microwave antennas
Super_high_frequency
Constant related to electromagnetic wave propagation in a medium
expressions neglect the effect of resistive loss in the walls of the waveguide. For a waveguide entirely filled with a homogeneous dielectric medium, similar
Wave_impedance
Analytical technique that probes molecular layers adsorbed to the surface of a waveguide
analytical technique that probes molecular layers adsorbed to the surface of a waveguide using the evanescent wave of a laser beam. It is used to measure the conformational
Dual-polarization interferometry
Dual-polarization_interferometry
Broadband electromagnetic impulse
their lightning source without major attenuation in the Earth–ionosphere waveguide, and can be received thousands of kilometres from their source. On a time-domain
Radio_atmospheric_signal
Radio technology devices
microwave frequencies, particularly the higher bands, waveguide designs can be used. Many of these waveguide couplers correspond to one of the conducting transmission
Power dividers and directional couplers
Power_dividers_and_directional_couplers
Microwave antenna
dielectric material like plastic, or a composite structure of metal plates or waveguides. Its principle of operation is the same as an optical lens: the microwaves
Lens_antenna
Electric current that periodically reverses direction
keeping the fields inside the waveguide and preventing leakage of the fields to the space outside the waveguide. Waveguides have dimensions comparable to
Alternating_current
a beam of light (e.g., a laser beam) into a thin film to be used as a waveguide without the need for precision polishing of the edge of the film, without
Prism_coupler
Horizontal layer that propagates electromagnetic radiation
the ducts were not present. The duct acts as an atmospheric dielectric waveguide and limits the spread of the wavefront to only the horizontal dimension
Atmospheric_duct
Pulse that is substantially slowed to less than the speed of light
Schemes are generally grouped into two categories: material dispersion and waveguide dispersion. Material dispersion mechanisms such as electromagnetically
Slow_light
Photonic systems which use silicon as an optical medium
signal routing, in addition to the passive transmission of light. Silicon waveguides are also of great academic interest, due to their unique guiding properties
Silicon_photonics
the waveguide and Γ. The overall goal of waveguide design is to find the proper structure that minimizes the threshold gain. The choice of waveguide material
Interband_cascade_laser
The waveguide F band is the range of radio frequencies from 90 GHz to 140 GHz in the electromagnetic spectrum, corresponding to the recommended frequency
F_band_(waveguide)
Antenna built with a metal can
portmanteau blending the words can and antenna) is a homemade directional waveguide antenna, made out of an open-ended metal can. Cantennas are typically
Cantenna
In a phased array or slotted waveguide antenna, squint refers to the angle that the transmission is offset from the normal of the plane of the antenna
Squint_(antenna)
Receiving device on satellite dishes
original microwave frequency it would require an expensive and impractical waveguide line. The LNB is usually a small box suspended on one or more short booms
Low-noise_block_downconverter
Type of antenna
A feed horn (or feedhorn) is a small horn antenna used to couple a waveguide to e.g. a parabolic dish antenna or offset dish antenna for reception or
Feed_horn
Antenna using a traveling wave
based on a ridge or stepped waveguide rather than a rectangular waveguide. In the structures based on rectangular waveguide, the asymmetry was achieved
Leaky_wave_antenna
Methods used to generate sound waveforms using a computer
modelling synthesizer made using waveguide synthesis was the Yamaha VL1 in 1994. While the efficiency of digital waveguide synthesis made physical modelling
Physical_modelling_synthesis
Method for multiplexing signals
circular (or square) waveguide port is the radiating element chosen for modern communication systems. The circular or square waveguide port is needed so
Polarization-division multiplexing
Polarization-division_multiplexing
Convention in engineering geometry
are reference planes for linearly polarized waveguides, antennas and other microwave devices. In waveguide systems, as in the electric circuits, it is
E-plane_and_H-plane
Type of microwave generator
equipment. A typical vircator is built inside an evacuated resonant cavity or waveguide. An electrode, a cold cathode, at one end injects an intense electron
Vircator
Porous form of silicon dioxide
system waveguide as low as possible (see also humidity buffering). Excessive moisture buildup within a waveguide can cause arcing inside the waveguide itself
Silica_gel
Israeli display technology manufacturer
Israeli-based company headquartered in Ness Ziona, Israel that creates optical waveguides for head-mounted displays. Founded in 2000, Lumus has developed technology
Lumus
Type of wearable device
into two main families: "Curved Mirror" (or Curved Combiner) based and "Waveguide" or "Light-guide" based. The curved mirror technique has been used by
Optical see-through head-mounted display
Optical_see-through_head-mounted_display
Electromagnetic radiation with wavelengths from 1 m to 1 mm
microwaves are carried by metal pipes called waveguides. Due to the high cost and maintenance requirements of waveguide runs, in many microwave antennas the output
Microwave
the waveguide its progress varies depending on the moisture content of the material being examined. When the pulse reaches the end of the waveguide it
TDR_moisture_sensor
A leaky mode or tunneling mode in an optical fiber or other waveguide is a mode having an electric field that decays monotonically for a finite distance
Leaky_mode
circulators, gyrators, etc. In rectangular waveguide topology, it also requires the implementation of circular waveguide sections which come out of the device
Isolator_(microwave)
Type of optical fiber waveguide
optical fibers (MOF) are optical fiber waveguides where guiding is obtained through manipulation of waveguide structure rather than its index of refraction
Microstructured_optical_fiber
It consists of a coin-shaped resonant cavity mounted at the end of a waveguide, with radiating slots cut into the face of the cavity that direct energy
Cutler_feed
computers. Semiconductor ring lasers are literally ring-shaped optical waveguides with a lasing medium. They have the ability to trap light in a ring, and
Semiconductor_ring_laser
The non-radiative dielectric (NRD) waveguide was introduced by Yoneyama in 1981. In Fig. 1 the crosses shown: it consists of a dielectric rectangular
Non-radiative dielectric waveguide
Non-radiative_dielectric_waveguide
technique for simulating the propagation of light in slowly varying optical waveguides. It is essentially the same as the so-called parabolic equation (PE) method
Beam_propagation_method
Device for generating microwaves
coupling loop that is connected to a waveguide (a metal tube, usually of rectangular cross section). The waveguide directs the extracted RF energy to the
Cavity_magnetron
Microchip manipulating light instead of electricity
optical planar waveguides. Especially, if modes can be easily converted from conventional single-mode planar waveguides into few-mode waveguides, and selectively
Photonic_integrated_circuit
Computational electrodynamics technique
fully vectorial. In a typical waveguide, there are a few guided modes (which propagate without coupling along the waveguide) and an infinite number of radiation
Eigenmode_expansion
examples of such standard resonant cavities are rectangular and circular waveguide cavities and coaxial cables resonators . Cavity perturbation measurement
Cavity_perturbation_theory
Model of phonons-polaritons
into the waveguides is facilitated by reflective and focusing structures. Phonon-polaritons are guided through the circuit by terahertz waveguides carved
Polaritonics
ITU-T Recommendation
University and ASSIA researchers: Waveguide over copper, which enables the Terabit DSL (TDSL). This exploits waveguide transmission modes, in particular
G.fast
Global electromagnetic resonances, generated and excited by lightning discharges
acts as a closed, although variable-sized, waveguide. The limited dimensions of the Earth cause this waveguide to act as a resonant cavity for electromagnetic
Schumann_resonances
The Wave systems use a folded waveguide (a series of passages from the speaker driver to the speaker grill). The waveguide is claimed to improve low-frequency
List_of_Bose_shelf_stereos
Single-pulse radar system
RF wavefront is launched into both waveguide feedhorns. The RF signal from both feedhorns travels up the waveguide where the signals from the left and
Monopulse_radar
Optical instrument
coupled back into the gain medium. Two types of optical waveguides are in common use. A ridge waveguide is created by etching parallel trenches in the quantum
Quantum-cascade_laser
Measurement technique in microwave engineering
material sample with a known thickness inside a waveguide, such as a coaxial cable or a rectangular waveguide, after which the dispersion data is extracted
Nicolson–Ross–Weir_method
Object detection system using radio waves
radar to detect targets. Some clutter may also be caused by a long radar waveguide between the radar transceiver and the antenna. In a typical plan position
Radar
Physical property of allowing light
of wavelengths. Guided light wave transmission via frequency selective waveguides involves the emerging field of fiber optics and the ability of certain
Transparency_and_translucency
Method of physical modelling synthesis
simplest class of wavetable-modification algorithms now known as digital waveguide synthesis, because the delay line acts to store one period of the signal
Karplus–Strong string synthesis
Karplus–Strong_string_synthesis
Waveguide component
flap-type waveguide attenuator that allows for precise and continuous attenuation of electromagnetic waves traveling through a rectangle waveguide. It comprises
Flap_attenuator
Proposed sixth-generation mobile telecommunications technology
modes. In 2023, Nagoya University in Japan created three-dimensional waveguide structures made of superconducting niobium for communication in the 100
6G
Periodic optical nanostructure that affects the motion of photons
waveguide – subwavelength grating (SWG) waveguide. The SWG waveguide operates in subwavelength region, away from the bandgap. It allows the waveguide
Photonic_crystal
Specialty of electronic engineering
electrical engineering involving the application of transmission line, waveguide, antenna, radar, and electromagnetic field principles to the design and
Radio-frequency_engineering
Reflection which reverses the direction of a wave, particle, or signal
In physics, backscatter (or backscattering) is the reflection of waves, particles, or signals back to the direction from which they came. It is usually
Backscatter
Method of electrical transmission
A single-wire transmission line (or single wire method) is a method of transmitting electrical power or signals using only a single electrical conductor
Single-wire_transmission_line
Gas-discharge lamp using induction to excite the gas inside
Alvara. This lamp replaces the opaque ceramic waveguide in earlier lamps with an optically clear quartz waveguide that increases efficiency. In previous lamps
Induction_lamp
Curve whose curvature changes linearly
in singlemode waveguides, to smoothen the abrupt change of curvature and suppress coupling to radiation modes, or in multimode waveguides, in order to
Euler_spiral
Device or system that exhibits resonance
short antenna that is connected to a waveguide (a metal tube usually of rectangular cross section). The waveguide directs the extracted RF energy to the
Resonator
Chemical compound
and oxygen. Its single crystals are an important material for optical waveguides, mobile phones, piezoelectric sensors, optical modulators and various
Lithium_niobate
International radio division of the BBC
Jolly Good Show, a music request programme presented by Dave Lee Travis; Waveguide, a radio reception guide; and The Merchant Navy Programme, a show for
BBC_World_Service
WAVEGUIDE
WAVEGUIDE
WAVEGUIDE
WAVEGUIDE
Girl/Female
Hindu
Girl/Female
Indian, Traditional
Goddess Lakshmi
Boy/Male
Tamil
Active, Quick
Boy/Male
Hindu, Indian
Strong
Boy/Male
Arabic
Girl/Female
Hindu, Indian
Blessing
Boy/Male
Muslim
Having many followers, Modesty, Decency
Girl/Female
Indian
Love, Friendship
Male
English
Anglicized form of Hebrew Zebiyna, ZEBINA means "bought." In the bible, this is the name of a son of Nebo who took a foreign wife.
Boy/Male
Tamil
Wealth
WAVEGUIDE
WAVEGUIDE
WAVEGUIDE
WAVEGUIDE
WAVEGUIDE