Magnetoelectric-field microwave antennas: Far-field orbital angular momenta from chiral-topology near fields

Maksim Berezin; Eugene O. Kamenetskii; Reuven Shavit

doi:10.2528/pierb16041203

Magnetoelectric-field microwave antennas: Far-field orbital angular momenta from chiral-topology near fields

Maksim Berezin, Eugene O. Kamenetskii, Reuven Shavit

Department of Electrical & Computer Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	141-157
Number of pages	17
Journal	Progress In Electromagnetics Research B
Volume	68
DOIs	https://doi.org/10.2528/pierb16041203
State	Published - 1 Jan 2016

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.2528/pierb16041203

Cite this

@article{cdaca65a1d6d48c58ed3f6a29beeb562,

title = "Magnetoelectric-field microwave antennas: Far-field orbital angular momenta from chiral-topology near fields",

abstract = "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.",

author = "Maksim Berezin and Kamenetskii, {Eugene O.} and Reuven Shavit",

note = "Publisher Copyright: {\textcopyright} 2016 Progress In Electromagnetics Research B.",

year = "2016",

month = jan,

day = "1",

doi = "10.2528/pierb16041203",

language = "English",

volume = "68",

pages = "141--157",

journal = "Progress In Electromagnetics Research B",

issn = "1937-6472",

publisher = "Electromagnetics Academy",

}

TY - JOUR

T1 - Magnetoelectric-field microwave antennas

T2 - Far-field orbital angular momenta from chiral-topology near fields

AU - Berezin, Maksim

AU - Kamenetskii, Eugene O.

AU - Shavit, Reuven

PY - 2016/1/1

Y1 - 2016/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85046412686&partnerID=8YFLogxK

U2 - 10.2528/pierb16041203

DO - 10.2528/pierb16041203

M3 - Article

AN - SCOPUS:85046412686

SN - 1937-6472

VL - 68

SP - 141

EP - 157

JO - Progress In Electromagnetics Research B

JF - Progress In Electromagnetics Research B

ER -

Magnetoelectric-field microwave antennas: Far-field orbital angular momenta from chiral-topology near fields

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this