55 relations: Admittance, Amplitude, Attenuation coefficient, Coaxial cable, Complex number, Cutoff frequency, Decibel, Dielectric loss, E (mathematical constant), Electric current, Electric field, Electrical impedance, Electromagnetic radiation, Electromagnetism, Electronic circuit, Electronic filter, Electronic filter topology, Euler's formula, Flux, Group velocity, Heaviside condition, IEEE Microwave and Wireless Components Letters, Imaginary number, Loading coil, Logarithm, Mathematical descriptions of opacity, Momentum, Neper, Optical fiber, Phase (waves), Phase velocity, Phasor, Planck constant, Primary line constants, Quantum, Quantum mechanics, Radio propagation, Reciprocal length, Reflection coefficient, Signal processing, Skin effect, Telecommunication, Telegrapher's equations, Time domain, Transmission coefficient, Transmission line, Transmission medium, Transverse mode, Twin-lead, Two-port network, ..., Voltage, Wave propagation, Waveform, Waveguide, Wavenumber. Expand index (5 more) »

## Admittance

In electrical engineering, admittance is a measure of how easily a circuit or device will allow a current to flow.

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## Amplitude

The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period).

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## Attenuation coefficient

Attenuation coefficient or narrow beam attenuation coefficient of the volume of a material characterizes how easily it can be penetrated by a beam of light, sound, particles, or other energy or matter.

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## Coaxial cable

Cross-sectional view of a coaxial cable Coaxial cable, or coax (pronounced), is a type of electrical cable that has an inner conductor surrounded by a tubular insulating layer, surrounded by a tubular conducting shield.

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## Complex number

A complex number is a number that can be expressed in the form, where and are real numbers, and is a solution of the equation.

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## Cutoff frequency

In physics and electrical engineering, a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced (attenuated or reflected) rather than passing through.

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## Decibel

The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a physical property to another on a logarithmic scale.

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## Dielectric loss

Dielectric loss quantifies a dielectric material's inherent dissipation of electromagnetic energy (e.g. heat).

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## E (mathematical constant)

The number is a mathematical constant, approximately equal to 2.71828, which appears in many different settings throughout mathematics.

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## Electric current

An electric current is a flow of electric charge.

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## Electric field

An electric field is a vector field surrounding an electric charge that exerts force on other charges, attracting or repelling them.

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## Electrical impedance

Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.

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## Electromagnetic radiation

In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.

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## Electromagnetism

Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles.

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## Electronic circuit

An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow.

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## Electronic filter

Electronic filters are circuits which perform signal processing functions, specifically to remove unwanted frequency components from the signal, to enhance wanted ones, or both.

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## Electronic filter topology

Electronic filter topology defines electronic filter circuits without taking note of the values of the components used but only the manner in which those components are connected.

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## Euler's formula

Euler's formula, named after Leonhard Euler, is a mathematical formula in complex analysis that establishes the fundamental relationship between the trigonometric functions and the complex exponential function.

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## Flux

Flux describes the quantity which passes through a surface or substance.

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## Group velocity

The group velocity of a wave is the velocity with which the overall shape of the wave's amplitudes—known as the modulation or envelope of the wave—propagates through space.

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## Heaviside condition

The Heaviside condition, named for Oliver Heaviside (1850–1925), is the condition an electrical transmission line must meet in order for there to be no distortion of a transmitted signal.

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## IEEE Microwave and Wireless Components Letters

IEEE Microwave and Wireless Components Letters is a monthly peer-reviewed scientific journal published by the IEEE Microwave Theory and Techniques Society.

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## Imaginary number

An imaginary number is a complex number that can be written as a real number multiplied by the imaginary unit,j is usually used in Engineering contexts where i has other meanings (such as electrical current) which is defined by its property.

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## Loading coil

A loading coil or load coil is an inductor that is inserted into an electronic circuit to increase its inductance.

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## Logarithm

In mathematics, the logarithm is the inverse function to exponentiation.

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## Mathematical descriptions of opacity

When an electromagnetic wave travels through a medium in which it gets attenuated (this is called an "opaque" or "attenuating" medium), it undergoes exponential decay as described by the Beer–Lambert law.

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## Momentum

In Newtonian mechanics, linear momentum, translational momentum, or simply momentum (pl. momenta) is the product of the mass and velocity of an object.

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## Neper

The neper (symbol: Np) is a logarithmic unit for ratios of measurements of physical field and power quantities, such as gain and loss of electronic signals.

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## Optical fiber

An optical fiber or optical fibre is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair.

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## Phase (waves)

Phase is the position of a point in time (an instant) on a waveform cycle.

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## Phase velocity

The phase velocity of a wave is the rate at which the phase of the wave propagates in space.

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## Phasor

In physics and engineering, a phasor (a portmanteau of phase vector), is a complex number representing a sinusoidal function whose amplitude (A), angular frequency (ω), and initial phase (θ) are time-invariant.

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## Planck constant

The Planck constant (denoted, also called Planck's constant) is a physical constant that is the quantum of action, central in quantum mechanics.

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## Primary line constants

The primary line constants are parameters that describe the characteristics of conductive transmission lines, such as pairs of copper wires, in terms of the physical electrical properties of the line.

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## Quantum

In physics, a quantum (plural: quanta) is the minimum amount of any physical entity (physical property) involved in an interaction.

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## Quantum mechanics

Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.

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## Radio propagation

Radio propagation is the behavior of radio waves as they travel, or are propagated, from one point to another, or into various parts of the atmosphere.

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## Reciprocal length

Reciprocal length or inverse length is a measurement used in several branches of science and mathematics.

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## Reflection coefficient

In physics and electrical engineering the reflection coefficient is a parameter that describes how much of an electromagnetic wave is reflected by an impedance discontinuity in the transmission medium.

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## Signal processing

Signal processing concerns the analysis, synthesis, and modification of signals, which are broadly defined as functions conveying "information about the behavior or attributes of some phenomenon", such as sound, images, and biological measurements.

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## Skin effect

Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near the surface of the conductor, and decreases with greater depths in the conductor.

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## Telecommunication

Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems.

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## Telegrapher's equations

The telegrapher's equations (or just telegraph equations) are a pair of coupled, linear differential equations that describe the voltage and current on an electrical transmission line with distance and time.

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## Time domain

Time domain is the analysis of mathematical functions, physical signals or time series of economic or environmental data, with respect to time.

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## Transmission coefficient

The transmission coefficient is used in physics and electrical engineering when wave propagation in a medium containing discontinuities is considered.

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## Transmission line

In communications and electronic engineering, a transmission line is a specialized cable or other structure designed to conduct alternating current of radio frequency, that is, currents with a frequency high enough that their wave nature must be taken into account.

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## Transmission medium

A transmission medium is a material substance (solid, liquid, gas, or plasma) that can propagate energy waves.

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## Transverse mode

A transverse mode of electromagnetic radiation is a particular electromagnetic field pattern of radiation measured in a plane perpendicular (i.e., transverse) to the propagation direction of the beam.

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## Twin-lead

Twin-lead cable is a two-conductor flat cable used as a balanced transmission line to carry radio frequency (RF) signals.

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## Two-port network

A two-port network (a kind of four-terminal network or quadripole) is an electrical network (circuit) or device with two pairs of terminals to connect to external circuits.

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## Voltage

Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.

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## Wave propagation

Wave propagation is any of the ways in which waves travel.

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## Waveform

A waveform is the shape and form of a signal such as a wave moving in a physical medium or an abstract representation.

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## Waveguide

A waveguide is a structure that guides waves, such as electromagnetic waves or sound, with minimal loss of energy by restricting expansion to one dimension or two.

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## Wavenumber

In the physical sciences, the wavenumber (also wave number or repetency) is the spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance.

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## Redirects here:

Attenuation constant, Attenuation parameter, Phase change coefficient, Phase change constant, Phase change parameter, Phase coefficient, Phase constant, Phase parameter, Propagation Constant, Propagation coefficient, Propagation coefficients, Propagation parameter, Propagation parameters, Secondary coefficients, Secondary line constants, Secondary parameters, Transmission constant, Transmission parameter, Transmission parameters.

## References

[1] https://en.wikipedia.org/wiki/Propagation_constant