The wave impedance of an electromagnetic wave is the ratio of the transverse components of the electric and magnetic fields (the transverse components...
5 KB (838 words) - 19:55, 16 September 2024
A quarter-wave impedance transformer, often written as λ/4 impedance transformer, is a transmission line or waveguide used in electrical engineering of...
10 KB (1,348 words) - 23:17, 10 October 2024
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...
1 KB (195 words) - 12:33, 22 January 2023
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...
8 KB (973 words) - 18:15, 12 September 2024
electrical engineering, impedance matching is the practice of designing or adjusting the input impedance or output impedance of an electrical device for...
32 KB (4,650 words) - 17:46, 13 September 2024
standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches...
31 KB (4,435 words) - 23:57, 15 September 2024
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...
28 KB (4,069 words) - 07:45, 30 April 2024
Refractive index (section Wave impedance)
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...
78 KB (8,741 words) - 20:49, 1 November 2024
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...
24 KB (4,000 words) - 15:32, 10 October 2024
Fresnel equations (category Polarization (waves))
}+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...
69 KB (8,311 words) - 21:31, 4 November 2024