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Control of radiated and conducted energy
electronics, industrial electronics, power engineering; electromagnetic interference control is the control of radiated and conducted energy such that emissions
Electromagnetic interference control
Electromagnetic_interference_control
Disturbance in an electrical circuit due to external sources of radio waves
Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by
Electromagnetic_interference
equipment, information systems, or electrically controlled processes. IEMI is a subset of electromagnetic interference (EMI) that is deliberate rather than accidental
Intentional electromagnetic interference
Intentional_electromagnetic_interference
Electrical engineering concept
propagation and reception of electromagnetic energy which may cause unwanted effects such as electromagnetic interference (EMI) or even physical damage
Electromagnetic_compatibility
Uses of the 2.4 GHz ISM radio spectrum
standard has been proven to generate significant amounts of electromagnetic interference that can interfere with any Bluetooth devices a user has connected
2.4_GHz_radio_use
Burst of electromagnetic energy
and can occur as an electromagnetic field, as a magnetic field, or as a conducted electric current. The electromagnetic interference caused by an EMP can
Electromagnetic_pulse
Using conductive or magnetic materials to reduce electromagnetic field intensity
In electrical engineering, electromagnetic shielding is the practice of reducing or redirecting the electromagnetic field (EMF) in a space with barriers
Electromagnetic_shielding
Electromagnetic interference standards body
Special Committee on Radio Interference) was founded in 1934 to set standards for controlling electromagnetic interference in electrical and electronic
CISPR
Enclosure of conductive mesh used to block electric fields
external or internal electromagnetic fields, and thus they block a large amount of the electromagnetic interference (see also electromagnetic shielding). They
Faraday_cage
Military unit
and electromagnetic interference for satellite communications systems, supporting combatant commanders. 16th SPCS operators can remotely control and task
16th Electromagnetic Warfare Squadron
16th_Electromagnetic_Warfare_Squadron
US Standard (test)
equipment for electromagnetic compatibility. The United States Department of Defense issued MIL-STD-461 in 1967 to integrate electromagnetic compatibility
MIL-STD-461
spectral efficiency Cellular traffic Electromagnetic interference control IEEE 802.11h - Transmit power control and dynamic frequency selection (DFS)
Radio_resource_management
Type of filter in signal processing
amplifier output for load stabilization, filter damping, or electromagnetic-interference control, even when it is not specifically intended to cancel loudspeaker
Zobel_network
Spreading the frequency domain of a signal
by default. Direct-sequence spread spectrum Electromagnetic compatibility (EMC) Electromagnetic interference (EMI) Frequency allocation Frequency-hopping
Spread_spectrum
Phenomenon resulting from the superposition of two waves
(constructive interference) or lower amplitude (destructive interference) if the two waves are in phase or out of phase, respectively. Interference effects
Wave_interference
Electricity meter Electromagnetic environment Electromagnetic interference control Electromagnetic radiation Electronic pest control Electronic Road Pricing
Index of environmental articles
Index_of_environmental_articles
Switching Control Techniques address electromagnetic interference (EMI) mitigation on power electronics (PE). The design of power electronics involves
Switching_control_techniques
Voluntary Control Council for Interference by Information Technology Equipment or VCCI is the Japanese body governing RF emissions (i.e. electromagnetic interference)
Voluntary Control Council for Interference by Information Technology Equipment
Voluntary_Control_Council_for_Interference_by_Information_Technology_Equipment
Modulation technique for mitigating EMI of power converters
modulation (RPWM) is a modulation technique introduced for mitigating electromagnetic interference (EMI) of power converters by spreading the energy of the noise
Random_pulse-width_modulation
requirements such as connection redundancy, reduced sensitivity to Electromagnetic Interference (EMI), and good error checking and correction. Determinacy involves
Process_control_network
Electrical component
An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil (spiral or helix). Electromagnetic coils are used in electrical
Electromagnetic_coil
Electromagnetic quantum-mechanical effect in regions of zero magnetic and electric field
physicality of electromagnetic potentials, Φ and A, in quantum mechanics. Classically it was possible to argue that only the electromagnetic fields are physical
Aharonov–Bohm_effect
Electric circuit added to biological signal amplifiers
antenna which picks up electromagnetic interference, especially 50/60 Hz noise from electrical power lines. This interference can obscure the biological
Driven_right_leg_circuit
Optical phenomenon
explain the electromagnetic nature of light. After the invention of the Fabry–Perot interferometer, in 1899, the mechanisms of thin-film interference could
Thin-film_interference
Disruptive modification of a signal
examples include: Electromagnetic interference (EMI) Co-channel interference (CCI), also known as crosstalk Adjacent-channel interference (ACI) Intersymbol
Interference_(communication)
Effect of a nuclear explosion on electronic equipment
A nuclear electromagnetic pulse (nuclear EMP or NEMP) is a burst of electromagnetic radiation created by a nuclear explosion. The resulting rapidly varying
Nuclear_electromagnetic_pulse
Type of magnetometer
A SQUID (superconducting quantum interference device) is a very sensitive magnetometer used to measure extremely weak magnetic fields, based on superconducting
SQUID
conductor. In electromagnetic compatibility (EMC), there are two common terms that will be found in many electromagnetic interference discussions or
Common_mode_current
Range of frequencies or wavelengths of electromagnetic radiation
The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate
Electromagnetic_spectrum
Electromagnetic induction Electromagnetic interference control Electromagnetic mass Electromagnetic metamaterials Electromagnetic pulse Electromagnetic radiation Electromagnetic
Index_of_physics_articles_(E)
capacitor – Electromagnetic environment – Electromagnetic induction – Electromagnetic interference control – Electromagnetic pulse – Electromagnetic radiation
Index_of_electronics_articles
Division of the U.S. Naval Surface Warfare Center
the Platform and Launch Tube. Analyses include Electromagnetic Compatibility/Electromagnetic Interference (EMC/EMI) using Circuit Modeling and Simulation
Naval Surface Warfare Center Crane Division
Naval_Surface_Warfare_Center_Crane_Division
standards on Electromagnetic compatibility (EMC) are mostly part of the IEC 61000 family. Below are some examples. IEC/TR EN 61000-1-1, Electromagnetic compatibility
List of common EMC test standards
List_of_common_EMC_test_standards
Technology to send internet signals over conventional power line grids
- Electromagnetic Compatibility (EMC) Requirements - Testing and Measurement Methods" is a working group focused on PLC equipment, electromagnetic compatibility
Broadband_over_power_lines
Room designed to be completely echo free
for performing measurements of antenna radiation patterns and electromagnetic interference. Performance expectations (gain, efficiency, pattern characteristics
Anechoic_chamber
Electromagnetic spectrum, 3 Hz – 3000 GHz
radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range
Radio_spectrum
Signal processing technique to reduce noise
used in communication and control to reduce the effect of additive interference corrupting an electric or electromagnetic target signal. In this context
Adaptive_noise_cancelling
Fundamental principle of physics
Fourier analysis is particularly common for waves. For example, in electromagnetic theory, ordinary light is described as a superposition of plane waves
Superposition_principle
Building containing the valves of static inverters of a HVDC plant
protect communication systems from electromagnetic interference, valve hall buildings must have shielding installed to control emission of radio-frequency energy
Valve_hall
Digital serial communication standard
The transmitter incorporates a coding algorithm which reduces electromagnetic interference over copper cables and enables robust clock recovery at the receiver
Transition-minimized differential signaling
Transition-minimized_differential_signaling
Combat involving electronics and directed energy
Electromagnetic warfare or electronic warfare (EW) is warfare involving the use of the electromagnetic spectrum (EM spectrum) or directed energy to control
Electronic_warfare
Electromagnetic frequencies ranging from 3 kHz to 300 GHz
modulation (AM) Bandwidth (signal processing) Electromagnetic interference Electromagnetic radiation Electromagnetic spectrum EMF measurement Frequency allocation
Radio_frequency
Military radar
architecture to suppress jamming, clutter or other sources of electromagnetic interference. The radar antenna consists of a group of horizontally polarized
AN/APY-9
Response of a system to a change from an equilibrium state
include lightning, electrostatic discharge and nuclear electromagnetic pulse. Within Electromagnetic compatibility testing, transients are deliberately administered
Transient_response
Use of radio waves for communication
induction, electromagnetic induction and aquatic and earth conduction, so there was a need for a more precise term referring exclusively to electromagnetic radiation
Radio
Topics referred to by the same term
to: A measure of turbidity in water quality control Interferometric visibility, which quantifies interference contrast in optics The reach of information
Visibility_(disambiguation)
Voltage common to both input terminals of an electrical device
longitudinal voltage. Common-mode interference (CMI) is a type of common-mode signal. Common-mode interference is interference that appears on both signal leads
Common-mode_signal
Type of audio equalization
sensitivity to ubiquitous electromagnetic interference. Historically, tone control was achieved via analog electronics, and most tone control circuits produced
Tone_control_circuit
Intereference effect in quantum optics
sodium atoms, achieving this by using quantum interference effects responsible for electromagnetically induced transparency (EIT). Her group performed
Electromagnetically induced transparency
Electromagnetically_induced_transparency
Wireless communication technology using visible light
useful in electromagnetic sensitive areas without causing electromagnetic interference. Both Wi-Fi and Li-Fi transmit data over the electromagnetic spectrum
Li-Fi
Potential for two waves to interfere
an electromagnetic field or quantum wave packet, at different points in space or time. Coherence controls the visibility or contrast of interference patterns
Coherence_(physics)
Military unit
The United States Space Force's 4th Electromagnetic Warfare Squadron (4 EWS) is an offensive space electromagnetic warfare unit formerly located at Holloman
4th Electromagnetic Warfare Squadron
4th_Electromagnetic_Warfare_Squadron
Localized dielectric breakdown under high voltage stress
signals are detected and carried to a master control unit where a filtering process is applied to reject interference. The amplitude and frequency of the UHF
Partial_discharge
Form of distortion affecting communication reliability
In telecommunications, intersymbol interference (ISI) is a form of distortion of a signal in which one symbol interferes with subsequent symbols. This
Intersymbol_interference
American academic
authored an article The Fall of TWA 800: The Possibility of Electromagnetic Interference which appeared in The New York Review of Books. The article's
Elaine_Scarry
Type of artificial sheet material
An electromagnetic metasurface is an artificially engineered, two-dimensional material designed to control the behavior of electromagnetic waves through
Electromagnetic_metasurface
Physical phenomenon
of particles in a classical electromagnetic field. There are many variants of the Aharonov-Bohm effect in electromagnetism. Here we review an electric
Gravitational Aharonov-Bohm effect
Gravitational_Aharonov-Bohm_effect
Thin, flexible sheet of metal
employed for electromagnetic shielding in various electronic devices. It helps prevent electromagnetic interference and radio frequency interference to ensure
Copper_foil
Materials engineered to have properties that have not yet been found in nature
"Evolution of metamaterial physics," in Ref. Electromagnetic metamaterials are metamaterials affecting electromagnetic waves that impinge on or interact with
Metamaterial
Type of radio station
Frequency Electromagnetic Fields, 3 kHz to 300 GHz" Sources: US Department of Health; The World Health Organization. IEEE. "Electromagnetic fields and
Base_station
Cold War military equipment of the US
Transmission-Line Aircraft Simulator), better known as Trestle, was a unique electromagnetic pulse (EMP) generation and testing apparatus built between 1972 and
ATLAS-I
avionics from outside interference since 1980. In 1986 The FAA Technical Center contracted for a definition of the electromagnetic environment for civil
High-intensity_radiated_field
Disturbance of the Earth's magnetosphere
honey bees, might also be affected. Advanced Composition Explorer Electromagnetic pulse List of solar storms Magnetar Solar and Heliospheric Observatory
Geomagnetic_storm
Disruption to reception of television signals
Television interference (TVI) is a particular case of electromagnetic interference which affects television reception. Many natural and man-made phenomena
Television_interference
Electronic flight control system
fly-by-wire because it offers a higher data transfer rate, immunity to electromagnetic interference and lighter weight. In most cases, the cables are just changed
Fly-by-wire
Direct induction heating of cooking vessels
Radio receivers near the induction-cooking unit may pick up some electromagnetic interference.[citation needed] Energy lost from gas cooking heats the kitchen
Induction_cooking
applications, the main focus of a scanner system is on locating real electromagnetic interference (EMI) sources distributed in a device under test, the DUT. Accordingly
Near-field_scanner
testing at healthcare facilities of "the electromagnetic immunity of medical devices and help identify interference issues that might exist with critical
Ad_hoc_testing
Sound other than the sound being monitored (primary sound)
or interference. Background noise is an important concept in setting noise levels. Background noise is a form of noise pollution or interference; it
Background_noise
Concept in quantum mechanics
both, thereby anticipating modern wave–particle duality. Thomas Young's interference experiments in 1801, and François Arago's detection of the Poisson spot
Wave–particle_duality
Transfer of information or power that does not require the use of physical wires
modulating properties of electromagnetic waves transmitted through space. Specifically, the transmitter generates artificial electromagnetic waves by applying
Wireless
North American supplier of train electronics and software
000 sq ft (280 m2) of testing space including a full electromagnetic compatibility/electromagnetic interference (EMI/EMC) lab. Founded in 1983, Quester Tangent
Quester_Tangent_Corporation
Voluntary declaration of conformity
Federal Communications Commission established the regulations on electromagnetic interference under Part 15 of the FCC rules in 1975. After several amendments
FCC_mark
Radio frequency allocations
machines. The powerful emissions of these devices can create electromagnetic interference and disrupt radio communication using the same frequency, so
ISM_radio_band
Speed of electromagnetic waves
The speed of light is the speed of electromagnetic waves. Light travels at slower speed inside materials like glass or water; its highest speed is in
Speed_of_light
Military unit
the 16th Electromagnetic Warfare Squadron. The 380th Electromagnetic Warfare Squadron is the reserve Associate Unit to the 16th Space Control Squadron
380th Electromagnetic Warfare Squadron
380th_Electromagnetic_Warfare_Squadron
Testing of prototypes for viability
(basic) Power measurement Signal quality test Conformance test Electromagnetic interference (EMI) pre-scan Thermal and four-corner test Basic parametric
Engineering_validation_test
Assistive listening technology
background noise. From this, the natural development was to generate electromagnetic fields representing the audio, which the telecoil could receive. A
Audio_induction_loop
Tactical-sized, single or multiple, or large vehicles can be operated in a controlled electromagnetic (EM) environment with emitters on and sensors stimulated while
Benefield_Anechoic_Facility
Standard for electrical and electronic devices
meets the electromagnetic emission and immunity levels defined by the EMC standards, it has been tested against worst-case electromagnetic disturbance
Risk-based approach to EMC regulation and standardization
Risk-based_approach_to_EMC_regulation_and_standardization
Measurement method using interference of waves
technique which uses the interference of superimposed waves to extract information. Interferometry typically uses electromagnetic waves and is an important
Interferometry
Electrical transmission without physical connection
electricity and magnetism to electromagnetism, predicting the existence of electromagnetic waves as the "wireless" carrier of electromagnetic energy. Around 1884
Wireless_power_transfer
Electromagnetically induced grating (EIG) is an optical interference phenomenon where an interference pattern is used to build a dynamic spatial diffraction
Electromagnetically induced grating
Electromagnetically_induced_grating
Area in which radio transmissions are heavily restricted
electromagnetic hypersensitivity, though scientific experiments have shown this condition is caused by the nocebo effect rather than electromagnetic waves
United States National Radio Quiet Zone
United_States_National_Radio_Quiet_Zone
NASA test stand and vacuum chamber
acoustic testing Mechanical vibration testing Modal testing Electromagnetic interference and compatibility testing This is a vacuum chamber built by NASA
Space_Power_Facility
Type of image noise
signal. Speckle interference pattern may be decomposed in the sum of plane waves. There exist a set of points where amplitude of electromagnetic field is exactly
Speckle_(interference)
List of physics and engineering textbooks covering electromagnetism
The Theory of Electromagnetism, Pergamon, 1964. Kong JA, Electromagnetic Wave Theory, 3rd ed, EMW, 2008. Schelkunoff SA, Electromagnetic Waves, Van Nostrand
List of textbooks in electromagnetism
List_of_textbooks_in_electromagnetism
Low-frequency electromagnetic compatibility (LF EMC) is a specific field in the domain of electromagnetic compatibility (EMC) and power quality (PQ),
Low-frequency electromagnetic compatibility
Low-frequency_electromagnetic_compatibility
American short-range decoy launching system
missiles. The decoys present false signals and interference to the attacking missiles' guidance and fire-control systems. The Mark 36 SRBOC uses the Mark 137
Mark_36_SRBOC
trailers. It is related to the electromagnetic track brake used in railways which also use electric current to directly control the brake force. This describes
Electric_friction_brake
Dimensionless number that quantifies the strength of the electromagnetic interaction
field theory underlying the electromagnetic coupling, the renormalization group dictates how the strength of the electromagnetic interaction grows logarithmically
Fine-structure_constant
instrumentation and monitoring systems, including radio frequency interference and electromagnetic interference protection. His contributions to these fields include
Leonard_W._Moore
Torque measurement device
They provide high sensitivity, immunity to electromagnetic interference, and minimal mechanical interference. By using piezoelectric crystals, these sensors
Dynamic_torque_sensor
Reported UFO incident in 1964
fraternity hazing ritual that spun wildly out of control." The report also explained that a classified electromagnetic pulse test had been responsible for UFO
Big_Sur_UFO
Computing network of nanomachines, at nanoscale
either on electromagnetic communication or on molecular communication. This is defined as the transmission and reception of electromagnetic radiation
Nanonetwork
existence was proven; it was written off as electromagnetic induction at the time. The discovery of electromagnetic waves, including radio waves, by Heinrich
Invention_of_radio
Dynamic disturbance in a medium or field
and electromagnetic fields; reaction–diffusion waves, such as in the Belousov–Zhabotinsky reaction; and many more. Mechanical and electromagnetic waves
Wave
Control system architecture for supervision of machines and processes
Supervisory control and data acquisition (SCADA) is a control system architecture comprising computers, networked data communications and graphical user
SCADA
if any) is an electromagnetic disturbance in the form of waves propagated through the electromagnetic field according to electromagnetic laws." 1866 –
Timeline of electromagnetism and classical optics
Timeline_of_electromagnetism_and_classical_optics
Family of wireless network protocols
studies involving 725 people who claimed electromagnetic hypersensitivity, "...suggests that 'electromagnetic hypersensitivity' is unrelated to the presence
Wi-Fi
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