Image impedance (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Image impedance" in English language version.

Last modified: 19:10:46, 27 May 2025 (UTC)

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Feynman, Richard; Leighton, Robert B.; Sands, Matthew. "Section 22-7. Filter". The Feynman Lectures on Physics. Vol. 2. If we imagine the line as broken up into small lengths Δℓ, each length will look like one section of the L-C ladder with a series inductance ΔL and a shunt capacitance ΔC. We can then use our results for the ladder filter. If we take the limit as Δℓ goes to zero, we have a good description of the transmission line. Notice that as Δℓ is made smaller and smaller, both ΔL and ΔC decrease, but in the same proportion, so that the ratio ΔL/ΔC remains constant. So if we take the limit of Eq. (22.28) as ΔL and ΔC go to zero, we find that the characteristic impedance z0 is a pure resistance whose magnitude is √(ΔL/ΔC). We can also write the ratio ΔL/ΔC as L0/C0, where L0 and C0 are the inductance and capacitance of a unit length of the line; then we have ${\sqrt {\frac {L_{0}}{C_{0}}}}$ .

Niknejad, Ali M. (2007). "Section 9.2. An Infinite Ladder Network.". Electromagnetics for high-speed analog and digital communication circuits.

Pedro L. D. Peres, Carlos R. de Souza, Ivanil S. Bonatti, "ABCD matrix: a unique tool for linear two-wire transmission line modelling", The International Journal of Electrical Engineering & Education, vol. 40, iss. 3, pp. 220–229, 2003, archived 4 March 2016.

Pedro L. D. Peres, Carlos R. de Souza, Ivanil S. Bonatti, "ABCD matrix: a unique tool for linear two-wire transmission line modelling", The International Journal of Electrical Engineering & Education, vol. 40, iss. 3, pp. 220–229, 2003, archived 4 March 2016.