| Autor: |
Berezin, Maksim, Kamenetskii, Eugene O., Shavit, Reuven |
| Předmět: |
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| Zdroj: |
Progress in Electromagnetics Research B; 2016, Vol. 68, p141-157, 17p |
| Abstrakt: |
The near fields in the proximity of a small ferrite particle with magnetic-dipolar-mode (MDM) oscillations have space and time symmetry breakings. Such MDM-originated fields -- called magnetoelectric (ME) fields -- carry both spin and orbital angular momentums. By virtue of unique topology, ME fields are strongly different from free-space electromagnetic (EM) fields. In this paper, we show that because of chiral topology of ME fields in a near-field region, far-field orbital angular momenta (OAM) can be observed, both numerically and experimentally. In a single-element antenna, we obtain a radiation pattern with an angular squint. We reveal that in far-field microwave radiation a crucial role is played by the ME energy distribution in the near-field region. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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