The wave impedance of an electromagnetic wave is the ratio of the transverse components of the electric and magnetic fields (the transverse components...

A quarter-wave impedance transformer, often written as λ/4 impedance transformer, is a transmission line or waveguide used in electrical engineering of...

impedance, a constant related to the propagation of sound waves in an acoustic medium Electrical impedance, the ratio of the voltage phasor to the electric current...

the SI unit of electrical resistance. The impedance of free space (that is, the wave impedance of a plane wave in free space) is equal to the product of...

electrical engineering, impedance matching is the practice of designing or adjusting the input impedance or output impedance of an electrical device for...

standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches...

characteristic impedance or surge impedance (usually written Z0) of a uniform transmission line is the ratio of the amplitudes of voltage and current of a wave travelling...

vacuum wave impedance to the wave impedance of the medium. The reflectivity R0 between two media can thus be expressed both by the wave impedances and the...

discontinuity in the characteristic impedance of the line, or if the far end of the line is not terminated in its characteristic impedance. This can happen, for instance...

}+Z_{1}\cos \theta _{\mathrm {i} }}}\right|^{2},} where Z1 and Z2 are the wave impedances of media 1 and 2, respectively. We assume that the media are non-magnetic...