Minimum Q circularly polarized electrically small spherical antennas

Oleksiy S. Kim

doi:10.1109/APS.2011.5996821

Minimum Q circularly polarized electrically small spherical antennas

Oleksiy S. Kim

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

The radiation problem for the TM10- and TE10-mode electric current densities on the surface of a spherical magnetic-coated PEC core is solved analytically. The combination of the electric and magnetic dipole modes reduces the radiation Q of the antenna. Moreover, with an appropriately designed magnetic-coated PEC core the stored energies of these modes balance each other making the antenna self-resonant and at the same time ensuring a perfect circularly polarized radiation. Numerical results for a practical dual-mode electrically small antenna confirm the theoretical predictions. A 4-arm spherical helix antenna with a magnetic-coated PEC core radiating both TM10 and TE10 spherical modes exhibits a perfect circular polarization in almost all directions. The antenna is self-resonant with the radiation Q being 0.67QChu, or 1.27Qdual.

Original language	English
Title of host publication	2011 IEEE International Symposium on Antennas and Propagation : Proceedings
Publisher	IEEE
Publication date	2011
Pages	750-752
ISBN (Print)	978-1-4244-9562-7
DOIs	https://doi.org/10.1109/APS.2011.5996821
Publication status	Published - 2011
Event	2011 IEEE International Symposium on Antennas and Propagation - Spokane, United States Duration: 3 Jul 2011 → 8 Jul 2011 https://ieeexplore.ieee.org/xpl/conhome/5981577/proceeding

Conference

Conference	2011 IEEE International Symposium on Antennas and Propagation
Country/Territory	United States
City	Spokane
Period	03/07/2011 → 08/07/2011
Internet address	https://ieeexplore.ieee.org/xpl/conhome/5981577/proceeding

Keywords

Dipole antennas
Helical antennas
Magnetic resonance
Magnetic shielding
Magnetic cores
Coatings

Access to Document

10.1109/APS.2011.5996821

http://www.apsursi2011.org/

OpenUrl availability

Full text

Cite this

@inproceedings{5ebaa6a82fa24b2ea4828a85f62f2c33,

title = "Minimum Q circularly polarized electrically small spherical antennas",

abstract = "The radiation problem for the TM10- and TE10-mode electric current densities on the surface of a spherical magnetic-coated PEC core is solved analytically. The combination of the electric and magnetic dipole modes reduces the radiation Q of the antenna. Moreover, with an appropriately designed magnetic-coated PEC core the stored energies of these modes balance each other making the antenna self-resonant and at the same time ensuring a perfect circularly polarized radiation. Numerical results for a practical dual-mode electrically small antenna confirm the theoretical predictions. A 4-arm spherical helix antenna with a magnetic-coated PEC core radiating both TM10 and TE10 spherical modes exhibits a perfect circular polarization in almost all directions. The antenna is self-resonant with the radiation Q being 0.67QChu, or 1.27Qdual.",

keywords = "Dipole antennas, Helical antennas, Magnetic resonance, Magnetic shielding, Magnetic cores, Coatings",

author = "Kim, {Oleksiy S.}",

year = "2011",

doi = "10.1109/APS.2011.5996821",

language = "English",

isbn = "978-1-4244-9562-7",

pages = "750--752",

booktitle = "2011 IEEE International Symposium on Antennas and Propagation",

publisher = "IEEE",

address = "United States",

note = "2011 IEEE International Symposium on Antennas and Propagation ; Conference date: 03-07-2011 Through 08-07-2011",

url = "https://ieeexplore.ieee.org/xpl/conhome/5981577/proceeding",

}

TY - GEN

T1 - Minimum Q circularly polarized electrically small spherical antennas

AU - Kim, Oleksiy S.

PY - 2011

Y1 - 2011

N2 - The radiation problem for the TM10- and TE10-mode electric current densities on the surface of a spherical magnetic-coated PEC core is solved analytically. The combination of the electric and magnetic dipole modes reduces the radiation Q of the antenna. Moreover, with an appropriately designed magnetic-coated PEC core the stored energies of these modes balance each other making the antenna self-resonant and at the same time ensuring a perfect circularly polarized radiation. Numerical results for a practical dual-mode electrically small antenna confirm the theoretical predictions. A 4-arm spherical helix antenna with a magnetic-coated PEC core radiating both TM10 and TE10 spherical modes exhibits a perfect circular polarization in almost all directions. The antenna is self-resonant with the radiation Q being 0.67QChu, or 1.27Qdual.

AB - The radiation problem for the TM10- and TE10-mode electric current densities on the surface of a spherical magnetic-coated PEC core is solved analytically. The combination of the electric and magnetic dipole modes reduces the radiation Q of the antenna. Moreover, with an appropriately designed magnetic-coated PEC core the stored energies of these modes balance each other making the antenna self-resonant and at the same time ensuring a perfect circularly polarized radiation. Numerical results for a practical dual-mode electrically small antenna confirm the theoretical predictions. A 4-arm spherical helix antenna with a magnetic-coated PEC core radiating both TM10 and TE10 spherical modes exhibits a perfect circular polarization in almost all directions. The antenna is self-resonant with the radiation Q being 0.67QChu, or 1.27Qdual.

KW - Dipole antennas

KW - Helical antennas

KW - Magnetic resonance

KW - Magnetic shielding

KW - Magnetic cores

KW - Coatings

U2 - 10.1109/APS.2011.5996821

DO - 10.1109/APS.2011.5996821

M3 - Article in proceedings

SN - 978-1-4244-9562-7

SP - 750

EP - 752

BT - 2011 IEEE International Symposium on Antennas and Propagation

PB - IEEE

T2 - 2011 IEEE International Symposium on Antennas and Propagation

Y2 - 3 July 2011 through 8 July 2011

ER -

Minimum Q circularly polarized electrically small spherical antennas

Abstract

Conference

Keywords

Access to Document

OpenUrl availability

Fingerprint

Cite this