Electrically-Small, Low-Profile, Huygens Circularly Polarized Antenna

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24 Citations (Scopus)

Abstract

The design, simulation studies, and experimental verification of an electrically-small, low-profile, broadside- radiating Huygens circularly-polarized (HCP) antenna are reported. To realize its unique CP cardioid-shaped radiation characteristics in a compact structure, two pairs of the metamaterial-inspired near-field resonant parasitic (NFRP) elements, the Egyptian axe dipole (EAD) and the capacitively loaded loop (CLL), are integrated into a crossed-dipole configuration. The EAD (CLL) elements act as the orthogonal electric dipole (magnetic dipole) radiators. Balanced broadside-radiated electric and magnetic field amplitudes with the requisite 90° phase difference between them are realized by exciting these two pairs of electric and magnetic dipoles with a specially designed, unbalanced crossed-dipole structure. The electrically small (ka = 0.73) design operates at 1575 MHz. It is low profile, 0.04λ0, and its entire volume is only0.0018 λ 30. A prototype of this optimized HCP antenna system was fabricated, assembled, and tested. The measured results are in good agreement with their simulated values. They demonstrate that the prototype HCP antenna resonates at 1584MHz with a 0.6 dB axial ratio, and produces the predicted Huygens cardioid-shaped radiation patterns. The measured HCP peakrealized LHCP gain was 2.7 dBic and the associated front-to-back ratio was 17.7dB.

Original languageEnglish (US)
JournalIEEE Transactions on Antennas and Propagation
DOIs
StateAccepted/In press - Dec 15 2017

Fingerprint

Antennas
Metamaterials
Radiators
Electric fields
Magnetic fields
Radiation

Keywords

  • Circular polarization (CP)
  • Dipole antennas
  • electrically small antennas
  • Global Positioning System
  • global positioning system (GPS)
  • Huygens source
  • Magnetic resonance
  • near-field resonant parasitic (NFRP) elements
  • Prototypes
  • Substrates

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

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title = "Electrically-Small, Low-Profile, Huygens Circularly Polarized Antenna",
abstract = "The design, simulation studies, and experimental verification of an electrically-small, low-profile, broadside- radiating Huygens circularly-polarized (HCP) antenna are reported. To realize its unique CP cardioid-shaped radiation characteristics in a compact structure, two pairs of the metamaterial-inspired near-field resonant parasitic (NFRP) elements, the Egyptian axe dipole (EAD) and the capacitively loaded loop (CLL), are integrated into a crossed-dipole configuration. The EAD (CLL) elements act as the orthogonal electric dipole (magnetic dipole) radiators. Balanced broadside-radiated electric and magnetic field amplitudes with the requisite 90° phase difference between them are realized by exciting these two pairs of electric and magnetic dipoles with a specially designed, unbalanced crossed-dipole structure. The electrically small (ka = 0.73) design operates at 1575 MHz. It is low profile, 0.04λ0, and its entire volume is only0.0018 λ 30. A prototype of this optimized HCP antenna system was fabricated, assembled, and tested. The measured results are in good agreement with their simulated values. They demonstrate that the prototype HCP antenna resonates at 1584MHz with a 0.6 dB axial ratio, and produces the predicted Huygens cardioid-shaped radiation patterns. The measured HCP peakrealized LHCP gain was 2.7 dBic and the associated front-to-back ratio was 17.7dB.",
keywords = "Circular polarization (CP), Dipole antennas, electrically small antennas, Global Positioning System, global positioning system (GPS), Huygens source, Magnetic resonance, near-field resonant parasitic (NFRP) elements, Prototypes, Substrates",
author = "Wei Lin and Ziolkowski, {Richard W}",
year = "2017",
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T1 - Electrically-Small, Low-Profile, Huygens Circularly Polarized Antenna

AU - Lin, Wei

AU - Ziolkowski, Richard W

PY - 2017/12/15

Y1 - 2017/12/15

N2 - The design, simulation studies, and experimental verification of an electrically-small, low-profile, broadside- radiating Huygens circularly-polarized (HCP) antenna are reported. To realize its unique CP cardioid-shaped radiation characteristics in a compact structure, two pairs of the metamaterial-inspired near-field resonant parasitic (NFRP) elements, the Egyptian axe dipole (EAD) and the capacitively loaded loop (CLL), are integrated into a crossed-dipole configuration. The EAD (CLL) elements act as the orthogonal electric dipole (magnetic dipole) radiators. Balanced broadside-radiated electric and magnetic field amplitudes with the requisite 90° phase difference between them are realized by exciting these two pairs of electric and magnetic dipoles with a specially designed, unbalanced crossed-dipole structure. The electrically small (ka = 0.73) design operates at 1575 MHz. It is low profile, 0.04λ0, and its entire volume is only0.0018 λ 30. A prototype of this optimized HCP antenna system was fabricated, assembled, and tested. The measured results are in good agreement with their simulated values. They demonstrate that the prototype HCP antenna resonates at 1584MHz with a 0.6 dB axial ratio, and produces the predicted Huygens cardioid-shaped radiation patterns. The measured HCP peakrealized LHCP gain was 2.7 dBic and the associated front-to-back ratio was 17.7dB.

AB - The design, simulation studies, and experimental verification of an electrically-small, low-profile, broadside- radiating Huygens circularly-polarized (HCP) antenna are reported. To realize its unique CP cardioid-shaped radiation characteristics in a compact structure, two pairs of the metamaterial-inspired near-field resonant parasitic (NFRP) elements, the Egyptian axe dipole (EAD) and the capacitively loaded loop (CLL), are integrated into a crossed-dipole configuration. The EAD (CLL) elements act as the orthogonal electric dipole (magnetic dipole) radiators. Balanced broadside-radiated electric and magnetic field amplitudes with the requisite 90° phase difference between them are realized by exciting these two pairs of electric and magnetic dipoles with a specially designed, unbalanced crossed-dipole structure. The electrically small (ka = 0.73) design operates at 1575 MHz. It is low profile, 0.04λ0, and its entire volume is only0.0018 λ 30. A prototype of this optimized HCP antenna system was fabricated, assembled, and tested. The measured results are in good agreement with their simulated values. They demonstrate that the prototype HCP antenna resonates at 1584MHz with a 0.6 dB axial ratio, and produces the predicted Huygens cardioid-shaped radiation patterns. The measured HCP peakrealized LHCP gain was 2.7 dBic and the associated front-to-back ratio was 17.7dB.

KW - Circular polarization (CP)

KW - Dipole antennas

KW - electrically small antennas

KW - Global Positioning System

KW - global positioning system (GPS)

KW - Huygens source

KW - Magnetic resonance

KW - near-field resonant parasitic (NFRP) elements

KW - Prototypes

KW - Substrates

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