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| AAA | Authentication, Authorization, and Accounting: A security framework used in computer networks to enforce access control policies and monitor user activities. |
| AC | Alternating Current: An electric current that reverses direction periodically, typically used to supply power to electronic devices. |
| ACPR | Adjacent Channel Power Ratio: A measure of the interference generated by a transmitter in adjacent frequency bands, typically specified for wireless communication systems. |
| ADC | Analog-to-Digital Converter: A device used to convert analog RF signals into digital form for processing by digital systems or equipment |
| AESA | Active Electronically Scanned Array: A type of phased array radar system that uses solid-state modules for transmitting and receiving signals, requiring robust EMC design. |
| AGC | Automatic Gain Control: A circuit that adjusts the gain of an RF amplifier to maintain a constant output level. |
| AM | Amplitude Modulation: A method of RF modulation where the amplitude of the carrier signal is varied in proportion to the waveform being transmitted. |
| AM/FM | Amplitude Modulation / Frequency Modulation: Techniques for encoding information onto a carrier wave, commonly used in radio broadcasting. |
| AMI | Automated Metering Infrastructure: A system used for remotely collecting and managing energy usage data, requiring careful EMC design to ensure signal integrity and data accuracy. |
| APEMC | Asia-Pacific EMC Symposium and Technical Exhibition: A conference that focuses on research, design, and EMC techniques in the Asia-Pacific region. |
| ASK | Amplitude Shift Keying: A type of digital modulation where the amplitude of the carrier signal is switched between two or more levels to represent digital data. |
| ASTM | American Society for Testing and Materials: An international organization developing and publishing voluntary consensus technical standards, including those related to electromagnetic compatibility. |
| AVEMCO | Avionics Electromagnetic Compatibility: A set of guidelines and standards for the design, installation, and maintenance of avionics systems to ensure EMC compliance in aircraft. |
| BC | Biconical Antenna: An antenna consisting of two conical elements placed opposite each other, used for radiated emissions or immunity testing. |
| BCAS | Broadcast Cable And Satellite: An industry consortium ensuring compatibility and preventing interference between broadcast, cable, and satellite services. |
| BCI | Bulk Current Injection: A method used in EMC testing to inject a known magnitude of current into a cable or wiring harness to assess its immunity to electromagnetic interference. |
| BCIM Probe | Balance Capacitive Injection Monitoring Probe: A device used to inject radio frequency current into an electronic device or system for susceptibility testing. |
| BIU | Base Interface Unit: An electronic device that facilitates the transmission and reception of data signals between a computer and other devices, requiring EMC design for data integrity. |
| BNC | Bayonet Neill-Concelman: A type of quick-connect RF connector commonly used in applications where frequent connections and disconnections are required. |
| BOA | Broadband Over Air: A wireless broadband communication system that provides high-speed internet connections using radio frequency signals. |
| BPSK | Binary Phase Shift Keying: A type of PSK modulation where only two phases are used to represent binary data. |
| CCA | Circuit Card Assembly: A complete assembly of electronic components mounted on a circuit board, ready for installation in a larger electronic system. |
| CDE | Comité de Diffusion de l’Électricité: A French committee responsible for electricity distribution and the maintenance of electrical networks. |
| CDR | Clock and Data Recovery: A circuit that extracts the clock signal and data from a modulated signal. |
| CE | Conformité Européene: A label affixed to products sold within the European Economic Area that indicates compliance with applicable EMC standards. |
| CEM | Compétence Électromagnétique: A French acronym referring to electromagnetic competence or expertise regarding electromagnetic compatibility. |
| CEM | Compliance EMC: Refers to conformity with regulatory EMC standards to ensure that electronic devices don’t adversely affect each other’s performance. |
| CEMC | Canadian ElectroMagnetics Compatibility: A Canadian organization that provides electromagnetic compatibility testing, consulting, and certification services. |
| CENELEC | A European Committee for Electrotechnical Standardization: A European standardization organization focusing on electrical engineering and electromagnetic compatibility standards. |
| CEPT | European Conference of Postal and Telecommunications Administrations: An international organization aiming to harmonize telecommunications regulations among European countries, including electromagnetic compatibility. |
| CIS | Conducted Immunity Standard: A standard that assesses how well electronic devices can withstand conducted interference. |
| CISPR | Comité International Spécial des Perturbations Radioélectriques (International Special Committee on Radio Interference): An international organization that sets standards for electromagnetic compatibility including emissions and immunity testing. |
| CSCE | Canadian Society of Civil Engineering: A national organization that promotes the development and exchange of knowledge in civil engineering, including topics like electromagnetic compatibility. |
| dB | Decibel: A unit used to express the ratio between two power levels or voltage levels in RF systems. It is a logarithmic unit. |
| dBc | Decibel relative to carrier: A unit used to express the power level of a signal relative to the carrier power level, often used to measure spurious signals. |
| dBm | Decibel milliwatt: A unit used to measure power levels in RF systems, where the reference power is 1 milliwatt. |
| DC | Direct Current: An electric current that flows consistently in one direction, typically used to power electronic devices. |
| DC Power Supply | A device that provides a constant direct current (DC) voltage or current to power electronic devices and circuits. |
| DEF STAN | Defence Standard: A set of EMC standards used by the United Kingdom Ministry of Defence to ensure the electromagnetic compatibility of defense equipment. |
| DGF | Dynamic Grounding Facility: A grounding system or technique that adapts to changes in environmental conditions and mitigates electromagnetic interference. |
| DIP | Dual In-Line Package: A type of integrated circuit packaging where the pins extend from the package body in two parallel rows. |
| DO | Dominant Offset: A term used to describe a consistent voltage or current offset in a transmission line, affecting the signal integrity and introducing noise or distortion. |
| DOD | Department of Defense: A United States government agency responsible for coordinating and supervising all agencies and functions related to national security and the military. |
| DPSK | Differential Phase Shift Keying: A type of PSK modulation where the phase difference between consecutive symbols is encoded rather than the absolute phase. |
| DRA | Dielectric Resonator Antenna: An antenna design that utilizes a dielectric resonator as the radiating element, offering advantages such as compact size and high radiation efficiency. |
| DSP | Digital Signal Processing: The manipulation of digital signals to improve their quality, often used in audio, video, and RF applications, requiring careful EMC considerations. |
| DUO | Data Update Only: A mode used in certain electromagnetic compatibility testing methods, where only data updates during testing are performed. |
| DUT | Device Under Test: The electronic device or system being tested to ensure electromagnetic compatibility. |
| EBG | Electromagnetic Band-Gap Structure: A periodic or repetitive structure designed to suppress or manipulate the propagation of electromagnetic waves within a given frequency range. |
| ECB | European Central Bank: The central bank of the Eurozone, responsible for monetary policy and financial stability in the European Union. |
| EEC | European Economic Community: The predecessor of the European Union, which also established regulations for electromagnetic compatibility standards. |
| EFF | Electromagnetic Field-Free: A designation for an area free of electromagnetic fields, usually created using specialized enclosures for testing purposes. |
| EFT | Electrical Fast Transient: A short burst of high-voltage electrical energy, often caused by switching operations, which can cause interference or damage electronic devices. |
| EHV | Extra High Voltage: Voltage levels above the highest standard used in power transmission systems, typically in the hundreds of kilovolts. |
| EIA | Electronic Industries Alliance: An alliance of trade associations promoting the competitiveness and growth of the electronics industry, addressing various areas, including EMC. |
| EIC | Europe Innovation Council: An organization established to support the development, funding, and innovation of European projects and initiatives across various disciplines, including technology. |
| EIRP | Effective Isotropic Radiated Power: The equivalent power that would be radiated by an isotropic antenna to produce the same signal strength as the actual antenna. |
| EMC | Electromagnetic Compatibility: The ability of electronic devices to function properly in the presence of electromagnetic interference (EMI). |
| EMC Directive | European Union Directive on Electromagnetic Compatibility: A legislative act addressing electromagnetic compatibility requirements for products sold in the European Union (EU). |
| EMC Test | Electromagnetic Compatibility Test: A procedure used to evaluate electronic devices’ performance in the presence of electromagnetic disturbances or their emissions. |
| EMC&SI | Electromagnetic Compatibility and Signal Integrity: The combined consideration of EMC and signal integrity, ensuring proper device operation, reliable communication, and avoidance of interference. |
| EMC/EMA | Electromagnetic Compatibility/Electromagnetic Acceptance: Ensuring the compatibility and acceptance of electronic systems in their intended electromagnetic environment. |
| EMCAD | EMC Assured Design: A design approach aimed at ensuring the EMC performance of products, integrated circuits, or electronic systems from the earliest stage of development. |
| EMCIR | Electromagnetic Compatibility Information Report: A document providing detailed information about a product’s EMC performance, test results, and compliance with standards. |
| EMCPII | Electromagnetic Compatibility Program Implementation Instructions: Guidelines and directives issued to ensure that systems, subsystems, and equipment are designed to meet specific EMC requirements. |
| EMCTD | Electromagnetic Compatibility Technology Division: A division of the IEEE that focuses on the development and dissemination of EMC-related technologies and standards. |
| EME | Electromagnetic Energy: The energy associated with electromagnetic fields, whether in the form of radiated waves or stored in magnetic or electric fields. |
| EMF | Electromagnetic Field: A field of force generated by electrically charged objects or moving electric charges. |
| EMI | Electromagnetic Interference: The disturbance caused by electromagnetic radiation that can impact the performance of electronic devices. |
| EMI/RFI Filter | Electromagnetic Interference/Radio Frequency Interference Filter: A device or circuit used to suppress or attenuate unwanted electromagnetic or radio frequency signals. |
| EMP | Electromagnetic Pulse: A burst of electromagnetic radiation that can disrupt or damage electronic devices, often associated with nuclear explosions or solar storms. |
| EMS | Electromagnetic Susceptibility: The vulnerability of electronic devices or systems to electromagnetic interference. |
| EMSEC | Emissions Security: The protection of electromagnetic emissions from electronic devices to avoid compromising security or providing an avenue for information leakage. |
| EN | European Norm: A set of standards developed by the European Committee for Electrotechnical Standardization for various aspects of EMC compliance. |
| ENEC | European Norms Electrical Certification: A European certification mark that ensures the quality, safety, and EMC performance of electrical products. |
| EPL | Electromagnetic Pollution Level: A measure of the ambient electromagnetic pollution in a particular area or environment, often used to assess potential EMC issues. |
| EPM | Electromagnetic Pulse Modulator: A device used to generate electromagnetic pulses for various applications, including testing electronic systems against EMP effects. |
| EPRI | Electric Power Research Institute: An independent, nonprofit organization that conducts research and development relating to the generation, delivery, and use of electricity. |
| ERP | Effective Radiated Power: The power actually radiated by an antenna system, taking into account antenna gain, feedline loss, and other factors. |
| ESC | Electrostatic Sensor Chip: A device used to detect the presence and intensity of static electricity or electrostatic discharge. |
| ESD | Electrostatic Discharge: The sudden flow of electricity between two electrically charged objects, causing damage to electronic components. |
| ESDC | Electrostatic Discharge Control: Measures taken to prevent or minimize the risk of electrostatic discharge damage to electronic devices, such as grounding and ESD protection. |
| ESOI | End of Silicon Scaling Era: A term referring to the potential slowdown in the future miniaturization of electronic devices due to the limitations of silicon-based technology. |
| EUE | Electrical, Uncoupled Field Emission: An emission measurement technique to assess the level of electromagnetic disturbances emitted by electronic devices. |
| EUT | Equipment Under Test: The electronic device or system undergoing testing for electromagnetic compatibility. |
| EUT Test | Equipment Under Test Testing: The process of testing a specific electronic device or system for its electromagnetic compatibility and performance under various conditions. |
| FCC | Federal Communications Commission: An independent agency of the United States government responsible for regulating communications by radio, television, wire, satellite, and cable. |
| FCC | Full-Compliance Certification: A certification process ensuring that electronic devices comply with FCC’s EMC regulations, ensuring proper functioning without causing interference. |
| FCC Part 15 | A rule of the Federal Communications Commission specifying the technical standards for unintentional and intentional radiators, ensuring electromagnetic compatibility. |
| FDM | Frequency Division Multiplexing: A technique that allows multiple signals to share a single communication channel by dividing it into different bandwidths or frequency bands. |
| FET | Field-Effect Transistor: A type of transistor commonly used in RF amplifiers and mixers. |
| FFT | Fast Fourier Transform: An algorithm used to transform time-domain data into the frequency domain, helpful in analyzing and understanding EMC issues. |
| FISM | Foreign Instrumentation Signals Monitoring: The process of monitoring and identifying electromagnetic emissions from foreign sources for intelligence and security purposes. |
| FM | Frequency Modulation: A method of RF modulation where the frequency of the carrier signal is varied in proportion to the waveform being transmitted. |
| FOD | Foreign Object Damage: Physical damage caused to electronic systems, including electromagnetic interference, by the presence of foreign objects like metallic debris or conductive particles. |
| FSK | Frequency Shift Keying: A type of digital modulation where the frequency of the carrier signal is switched between two or more values to represent digital data. |
| FSS | Fixed Satellite Service: Satellite communication services provided at fixed locations on Earth, requiring careful EMC design to avoid interference or signal degradation. |
| G/T | Gain-to-Noise Temperature Ratio: A figure of merit used to compare the gain of an antenna to the noise it receives, indicating the antenna’s ability to receive weak signals. |
| GFSK | Gaussian Frequency Shift Keying: A type of FSK modulation where the frequency deviation is Gaussian filtered to reduce bandwidth. |
| GHz | Gigahertz: A unit of frequency equal to one billion hertz, commonly used in RF systems to represent high-frequency signals. |
| GSM | Global System for Mobile Communications: A standard for digital cellular networks used for mobile communication and data transfer. |
| GTEM | Gigahertz Transverse Electromagnetic: A type of electromagnetic compatibility test chamber designed for broadband emissions and immunity testing. |
| GTEM Cell | Gigahertz Transverse Electro-Magnetic Cell: A specialized electromagnetic compatibility test chamber designed for broadband emissions and immunity testing. |
| GTEM/FAM | Gigahertz Transverse Electromagnetic Field Amplifier: An amplifier designed to create strong electromagnetic fields inside a GTEM chamber required for EMC testing. |
| HEMP | High-Altitude Electromagnetic Pulse: An electromagnetic pulse generated by a nuclear explosion occurring at high altitudes, capable of damaging electronic devices over large areas. |
| HEMP | High-Efficiency Multimedia Protocol: A protocol or technique used to optimize data transmission, often implemented at higher communication layers while considering EMC aspects. |
| HERF | High-Energy Radio Frequency: The use of high-power radio frequencies for a variety of applications, such as directed energy weapons or non-lethal crowd control systems. |
| HIL | Hardware-in-the-Loop: A technique used in testing, simulation, and verification, which combines physical components with a simulated environment, requiring careful EMC design. |
| HIPOT | High-Potential Test: A high-voltage test performed to ensure the insulation integrity of electronic devices, determining their ability to withstand high voltages. |
| HIRF | High-Intensity Radiated Field: The high-powered electromagnetic fields generated by radar, radio, and telecommunications equipment that can interfere with electronic devices. |
| HIRF/E | High-Intensity Radiated Fields/Environment: Testing related to the analysis of electromagnetic compatibility in environments exposed to powerful electromagnetic fields, typically associated with aerospace applications. |
| HIRF/I | High-Intensity Radiated Field/Incremental: A test conducted on aircraft systems to incrementally evaluate their ability to withstand and operate in various electromagnetic conditions. |
| HPEM | High-Power Electromagnetics: The study of the effects of intense electromagnetic fields on electronic systems, materials, and living organisms. |
| HVAC | Heating, Ventilation, and Air Conditioning: Systems that can generate electromagnetic radiation or suffer from electromagnetic interference, requiring careful EMC practices. |
| IAV | Immunity Assessment and Verification: The process of evaluating the immunity of electronic devices to external electromagnetic disturbances, ensuring proper functionality under real-world conditions. |
| IC | Integrated Circuit: A miniaturized electronic circuit consisting of semiconductor devices and passive components, susceptible to EMC issues. |
| ICNIRP | International Commission on Non-Ionizing Radiation Protection: An international body that provides guidelines on the exposure to non-ionizing radiation, including electromagnetic fields. |
| IDF | Intermediate Distribution Frame: A distribution frame or wiring rack used to connect telecom and data communication wiring from various sources within a building. |
| IEC | International Electrotechnical Commission: An international organization that develops and publishes international standards for all electrical, electronic, and related technologies, including EMC. |
| IF | Intermediate Frequency: The frequency at which the received RF signal is converted before demodulation in a superheterodyne receiver. |
| IPS | In-Plane Switching: A technology used in the manufacture of liquid crystal displays (LCDs) that provides wider viewing angles and better color reproduction. |
| ISM | Industrial, Scientific, and Medical: The radio frequency band reserved for industrial, scientific, and medical applications, such as microwave ovens and wireless medical devices. |
| ISO | International Organization for Standardization: An independent, non-governmental organization that develops and publishes international standards, including those related to EMC. |
| IVN | In-Vehicle Network: A network connecting various electronic devices within a vehicle, requiring careful EMC design to prevent electrical interference and ensure safe operation. |
| JASO | Japan Automobile Standards Organization: An organization that develops and maintains automotive standards in Japan, including those related to electromagnetic compatibility. |
| kHz | Kilohertz: A unit of frequency equal to one thousand hertz, commonly used in RF systems to represent lower-frequency signals or bandwidths. |
| LAB | Local Area Network Analyzer: A device used to analyze and troubleshoot issues related to data transmission over a local area network, requiring proper EMC design for accurate measurements. |
| LAN | Local Area Network: A computer network that connects devices within a limited geographic area, such as a home, office, or campus. |
| LISN | Line Impedance Stabilization Network: A tool used in conducted emissions testing to provide a defined impedance for a device under test, enabling accurate measurements. |
| LNA | Low-Noise Amplifier: An amplifier used to amplify weak RF signals while maintaining low levels of noise. |
| LO | Local Oscillator: An electronic circuit that generates a stable, known frequency for the purpose of mixing with a received signal, used in various communication systems. |
| LTCC | Low-Temperature Co-Fired Ceramic: A multilayer ceramic technology used to produce complex circuits and components for applications demanding electromagnetic compatibility. |
| LVDS | Low-Voltage Differential Signaling: A signaling method used for high-speed data transmission that reduces electromagnetic interference. |
| MCAD | Mechanical Computer-Aided Design: The use of software tools to create, simulate, and analyze mechanical systems, incorporating EMC considerations for enclosures and grounding. |
| MDS | Measurement Data Set: A collection of measured data obtained during electromagnetic compatibility testing, used for analysis and performance assessment. |
| MER | Modulation Error Rate: A measure of the distortion or errors introduced to the information being transmitted through modulation techniques. |
| MHz | Megahertz: A unit of frequency equal to one million hertz, commonly used in RF systems to represent medium-frequency signals. |
| MI | Medical Instrumentation: Electronic devices used in medical applications, subject to specific EMC standards to ensure patient safety. |
| MIL | STD – Military Standard: A set of standards developed by the United States Department of Defense to ensure the EMC performance of electronic systems used in military applications. |
| MIMO | OTA – MIMO Over-The-Air: A testing method for evaluating the performance of MIMO antennas and wireless systems in real-world conditions, taking into account factors like multipath propagation and interference. |
| MIMO | Multiple-Input Multiple-Output: A wireless communication technology that uses multiple antennas to transmit and receive multiple signals simultaneously, increasing data rates and system performance. |
| MMIC | Monolithic Microwave Integrated Circuit: An integrated circuit designed for high-frequency RF applications, requiring careful EMC design to avoid interference and degradation. |
| MOT | Ministry of Telecommunications: A government body responsible for regulating and managing telecommunication systems, including EMC requirements to ensure proper functioning. |
| MPE | Maximum Permissible Exposure: The maximum level of electromagnetic radiation or electric field to which a person may be safely exposed, usually established by regulatory bodies. |
| MSK | Minimum Shift Keying: A type of FSK modulation where the frequency shift between symbols is minimized to increase spectral efficiency. |
| MTEMI | Microwave Tube-Emitter Interface: The interface between a microwave tube and its associated electronic components, which may require electromagnetic compatibility considerations. |
| N | type – A type of coaxial RF connector used for larger, higher-power applications, known for its robustness and low loss. |
| NEMP | Nuclear Electromagnetic Pulse: An EMP generated by a nuclear explosion, which can affect a vast area and potentially damage or disrupt electronic systems. |
| NRTL | National Recognized Testing Laboratory: An independent organization recognized by OSHA to test and certify products for compliance with safety and EMC standards. |
| NTN | Noise Transistor: A transistor specifically designed for generating and measuring noise levels in electronic devices, often used in radio frequency testing. |
| OATS | Open Area Test Site: A location where electromagnetic compatibility testing is performed outdoors, using specific ground arrangements and measuring equipment. |
| OCF | Over-Current Fuse: A safety device used to protect electronic devices and circuits from excessive current, automatically interrupting the flow of current when a fault occurs. |
| OHMIC Loss | The power dissipation in a resistive component due to the electrical current flowing through it, generating heat energy. |
| OHMIC Resistance | The resistance of a conductor, which determines the amount of power dissipated as heat when current flows through it. |
| OOK | On-Off Keying: A type of digital modulation where the carrier signal is switched on and off to represent binary data. |
| OT | Over-Temperature: A condition where electronic devices or systems operate at a temperature above their design limits, potentially leading to malfunctions or failures. |
| OTP | One-Time Programmable: A type of electronic memory that can be programmed only once, typically used to store permanent or limited-change data. |
| PCB | Printed Circuit Board: A board made of non-conductive material that supports and connects electronic components in a circuit. |
| PCEMI | Predicted Common-mode EMI: A technique for predicting the level of common-mode electromagnetic interference that may occur within a system. |
| PDN | Power Delivery Network: A network of conductors, power planes, capacitors, and other components designed to distribute power to electronic devices. |
| PDN | Power Distribution Network: A network of conductors and elements used to distribute electrical power within a system, subject to EMC design considerations to minimize noise and interference. |
| PDS | Power Distribution System: A network used to supply electrical power to various devices, which needs to be designed to avoid EMC issues like voltage spikes or harmonics. |
| PEM | Power Electronics Module: An electronic device used to control or convert electrical power, which must meet specific EMC requirements to prevent interference. |
| PIM | Passive Intermodulation: The nonlinear interaction between signals in passive components, leading to distortion and unwanted noise. |
| PIM | Power Integrity Model: A mathematical model used to analyze power integrity issues related to electrical noise, EMC, and signal integrity in electronic systems. |
| PIM | Passive Intermodulation: Unwanted intermodulation products that can arise in antenna systems due to nonlinearities, causing interference and degradation of system performance. |
| PLL | Phase-Locked Loop: A feedback control system that compares the phase of the output signal with the phase of a reference signal to maintain synchronization.pc-hero-sub-images-shadow |
| PM | Phase Modulation: A method of RF modulation where the phase of the carrier signal is varied in proportion to the waveform being transmitted. |
| PSK | Phase Shift Keying: A type of digital modulation where the phase of the carrier signal is switched between different values to represent digital data. |
| PSU | Power Supply Unit: A device that converts alternating current (AC) into direct current (DC) or regulates the voltage/current supplied to electronic devices. |
| PWB | Printed Wiring Board: An alternative term for a printed circuit board (PCB) used to mount and interconnect electronic components. |
| PWM | Pulse Width Modulation: A technique used to encode information onto a carrier wave by varying the pulse width, commonly used in power electronics for motor control. |
| Q | factor – Quality Factor: A measure of the selectivity or energy storage efficiency of a resonant circuit, often used to describe RF filters or oscillators. |
| QAM | Quadrature Amplitude Modulation: A type of digital modulation where both the amplitude and phase of the carrier signal are varied to represent multiple bits of digital data simultaneously. |
| QPSK | Quadrature Phase Shift Keying: A type of PSK modulation where four phases are used to represent binary data. |
| RCC | Russian Certification Center: A certification body in Russia responsible for ensuring the compliance of products with Russian and international standards, including EMC. |
| RCS | Radar Cross Section: A measure of the energy scattered back to a radar system by a target, used in assessing the detectability of objects. |
| RCS | Radiated and Conducted Susceptibility: The susceptibility of electronic devices or systems to both radiated and conducted electromagnetic disturbances. |
| RDS | Remote Data Synchronizer: A device used to synchronize data between a central server and remote client devices, maintaining consistency and minimizing data loss. |
| RE | Radiated Emissions: Electromagnetic disturbances that propagate through space and are emitted by electronic devices, potentially interfering with other devices. |
| RF | Radio Frequency: The range of electromagnetic wavelengths used for wireless communication. |
| RFD | Request for Deviation: A formal request to deviate from EMC standards or requirements, often submitted when achieving full compliance is not feasible. |
| RFI | Radio Frequency Interference: The electromagnetic disturbance caused by radio frequency signals interfering with the operation of electronic devices or systems. |
| RFIC | Radio Frequency Integrated Circuit: An integrated circuit that operates at high frequencies, designed to process and transmit radio frequency signals. |
| RFID | Radio Frequency Identification: A technology that uses electromagnetic fields to automatically identify and track tags attached to objects. |
| RFM | Radio Frequency Module: A compact assembly containing various components, such as antennas, filters, amplifiers, and modulators for wireless communication systems. |
| RI | Radiated Immunity: The ability of an electronic device to operate correctly in the presence of electromagnetic fields or radiation. |
| RM | Radiated Immunity: A test for the ability of electronic devices to resist and operate properly in the presence of powerful radio frequency electromagnetic fields. |
| RSD | Radiated Susceptibility Test: A test performed to evaluate the susceptibility of electronic devices to electromagnetic radiation, ensuring their proper operation in real-world conditions. |
| RX | Receiver: An electronic device or system used for receiving and demodulating RF signals. |
| S | parameter – Scattering Parameter: A set of parameters used to describe the behavior of RF devices or networks, such as reflection coefficient and transmission coefficient. |
| S11 | Reflection coefficient: A parameter used to quantify the amount of power reflected back from an antenna, indicating the antenna’s impedance matching. |
| SAE | Society of Automotive Engineers: An organization that sets standards for the automotive industry, including those related to EMC for automotive electronic systems. |
| SAR | Supplier Assessment Report: A report evaluating the EMC performance of various suppliers, helping in the selection of compliant components and systems. |
| SAR | System Acceptance Review: A comprehensive review of the system’s EMC performance to verify compliance with specified EMC requirements. |
| SAR | System Assessment and Responsibilities: An analysis of system components and the assignment of EMC-related responsibilities in the design and operation phase. |
| SAR | Specific Absorption Rate: A measure of the rate at which RF electromagnetic energy is absorbed by the human body when exposed to an antenna’s radiated power, used for assessing potential health effects. |
| SARL | Société Anonyme à Responsabilité Limitée: A French acronym used for Limited Liability Companies, including those involved in electromagnetic compatibility testing and consulting. |
| SARPS | Safety and Reliability Program System: A set of guidelines and standards developed by international aviation organizations related to electromagnetic compatibility in aircraft systems. |
| SAS | Serial Attached SCSI: A computer bus interface technology used to transfer data between computers and peripheral devices, often used in high-performance storage systems. |
| SCIF | Sensitive Compartmented Information Facility: A secure environment that prevents electronic emissions from being intercepted, ensuring protection against electromagnetic eavesdropping. |
| SDR | Software Defined Radio: A radio system where key functions are implemented in software, requiring careful EMC design to prevent interference with other systems. |
| SEG | Shielded Enclosure Gasket: A specialized gasket used in electromagnetic compatibility testing chambers to ensure proper shielding from external electromagnetic interference. |
| SMA | SubMiniature version A: A type of coaxial RF connector commonly used for connecting RF cables to antennas or other RF components. |
| SNR | Signal-to-Noise Ratio: A measure of the strength of a desired signal in comparison to the background noise level, important for reliable communication. |
| SSD | Solid State Drive: Data storage devices that use solid-state memory, requiring EMC considerations to prevent or minimize any interference with other devices. |
| SVET | Scanning Vibrating Electrode Technique: An electrochemical technique used for local corrosion studies and evaluating the susceptibility of materials to galvanic corrosion. |
| SWEMCG | Society of Women Engineers in Electromagnetic Compatibility and Grounding: An association that promotes female involvement in the field of electromagnetic compatibility and grounding. |
| SWR | Standing Wave Ratio: A measure of the impedance matching between an antenna and the transmission line, indicating the efficiency of power transfer. |
| TDR | Time Domain Reflectometry: A measurement technique used to determine the characteristic impedance and detect faults in transmission lines or cables. |
| TDRSS | Tracking and Data Relay Satellite System: A network of satellites used for communication with other spacecraft, especially for data relay purposes. |
| TEM | Transverse Electromagnetic Mode: The mode of propagation in which both electric and magnetic fields are perpendicular to the direction of wave propagation. |
| TEM Cell | Transverse Electro-Magnetic Cell: A small test enclosure used to measure electromagnetic susceptibility or emissions for electronic devices. |
| TEMPEST | Telecommunications Electronics Material Protected from Emanating Spurious Transmissions: A security standard that protects electronic equipment from being monitored by compromising electromagnetic emissions. |
| TEMPEST | Transient Electromagnetic Pulse Emanation Standard: A code name for a set of U.S. government standards to prevent electromagnetic signals from being intercepted or monitored. |
| TESEQ | Telecom, EMC, Safety, and Environmental Testing: A company providing test and measurement solutions for telecom and EMC testing. |
| TIA | Telecommunications Industry Association: An American trade association representing the telecommunications industry, including standards for electromagnetic compatibility. |
| TRF | Time Response Function: A measure of a system’s response to an abrupt change in the input, used in the analysis of electromagnetic compatibility. |
| TWT | Traveling Wave Tube: A specialized vacuum tube used for high-power RF amplification, commonly used in radar and satellite systems, requiring careful EMC consideration. |
| TX | Transmitter: An electronic device or system used for generating and transmitting RF signals. |
| UE | User Equipment: The end-user devices or systems accessing a communication network, such as smartphones, laptops, or IoT (Internet of Things) devices. |
| ULSI | Ultra-Large-Scale Integration: A technology that allows fabricating integrated circuits that incorporate millions or billions of transistors on a single chip. |
| USB | Universal Serial Bus: A widely used interface for connecting various devices, requiring EMC design to avoid interference and ensure reliable data transmission. |
| UWB | Ultra-Wideband: A wireless communication technology that uses a very low-power signal over a wide spectrum, suitable for short-range, high-bandwidth applications. |
| V(2)L | Voltage-Controlled Voltage-to-Current Converter: An electronic circuit that converts a voltage input into a proportional current output, commonly used in amplifiers and feedback systems. |
| VCCI | Voluntary Control Council for Interference by Information Technology Equipment: A Japanese regulatory body that provides standards for electromagnetic compatibility of electronic devices. |
| VDE | Verband der Elektrotechnik, Elektronik und Informationstechnik: A German organization that sets standards and tests electrical and electronic devices for safety and electromagnetic compatibility. |
| VDL | VHF Data Link: A communication method used in aviation to transmit digital information between aircraft and ground stations using the VHF radio frequency band. |
| VNA | Vector Network Analyzer: A test instrument used to measure the electrical characteristics of antennas, such as impedance, return loss, and insertion loss. |
| VSWR | Voltage Standing Wave Ratio: A measure of how well a device matches the input impedance to its characteristic impedance, used to assess EMC performance in RF systems. |
| VTS | Vehicle Tracking System: A system that uses electronic devices to track and monitor the location, movement, and status of vehicles, requiring robust EMC design to avoid interference. |
| Wavelength | The distance between two corresponding points in a wave, usually expressed in meters, commonly used in RF systems to describe the physical size of antennas or propagation characteristics. |
| WCDMA | Wideband Code Division Multiple Access: A wireless communication technology used for 3G mobile networks, providing high-speed data transfer capabilities. |
| WEPT | Wireline Electromagnetic Pulse Tester: A device used to simulate electromagnetic pulses to evaluate the susceptibility of electronic systems to such impulses. |
| XPIC | Cross-Polarized Interference Cancellation: A technique used in wireless communication to separate and cancel out interference from signals with different polarizations. |