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Article

Time-reversal Symmetry in Antenna Theory

Instituto Superior Técnico and Instituto de Telecomunicações, University of Lisbon, Avenida Rovisco Pais, 1, 1049-001 Lisboa, Portugal
Symmetry 2019, 11(4), 486; https://doi.org/10.3390/sym11040486
Received: 24 February 2019 / Revised: 1 April 2019 / Accepted: 2 April 2019 / Published: 4 April 2019
Here, I discuss some implications of the time-reversal invariance of lossless radiating systems. I highlight that time-reversal symmetry provides a rather intuitive explanation for the conditions of polarization and impedance matching of a receiving antenna. Furthermore, I describe a solution to generate the time-reversed electromagnetic field through the illumination of a matched receiving antenna with a Herglotz wave. View Full-Text
Keywords: Time-reversal symmetry; Antennas; Lorentz reciprocity Time-reversal symmetry; Antennas; Lorentz reciprocity
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MDPI and ACS Style

Silveirinha, M.G. Time-reversal Symmetry in Antenna Theory. Symmetry 2019, 11, 486. https://doi.org/10.3390/sym11040486

AMA Style

Silveirinha MG. Time-reversal Symmetry in Antenna Theory. Symmetry. 2019; 11(4):486. https://doi.org/10.3390/sym11040486

Chicago/Turabian Style

Silveirinha, Mário G. 2019. "Time-reversal Symmetry in Antenna Theory" Symmetry 11, no. 4: 486. https://doi.org/10.3390/sym11040486

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