Dual-Polarized Hexaferrite Antenna for Unmanned Aerial Vehicle (UAV) Applications

Lee, Wonchoel; Hong, Yang‐Ki; Lee, Jaejin; Gillespie, David; Ricks, Kenneth G.; Hu, Fei; Abu-Qahouq, J.A.

doi:10.1109/lawp.2013.2270948

Cited by 24 publications

(18 citation statements)

References 10 publications

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“…Various miniaturised antennas have been reported with hexaferrite elements, including wire-wound conductors on hexaferrite chips [8,9] and patches with substrates that were solid tiles [10,11], flexible [3] or a lattice of hexaferrite bars [12]. While all of these works observed miniaturisation, varying approaches to performance analysis especially with regard to the treatment of loss tangent and efficiency lead to differing conclusions on the applicability of the antenna to various communication problems.…”

Section: Review Of Hexaferrite Antennasmentioning

confidence: 99%

“…Where high radiation efficiencies have been reported, these appear to be limited to designs which use hexaferrite chip loading elements such as [8,9,12], where the miniaturisation is less pronounced than that observed in conventional patch designs due to the lower filling factor. Conventional patch designs achieve greater miniaturisation [10,11,3] but the utility of these designs for common communication problems depends on whether loss tangent and efficiency has been given full consideration.…”

Section: Review Of Hexaferrite Antennasmentioning

confidence: 99%

“…Increasing both magnetic permeability µ r and ε r greatly increases the resultant antenna miniaturisation, reducing the bandwidth reduction associated with high values of increasing ε r [5]. While magneto-dielectric loading elements have been tested in various forms to provide varying degrees of antenna miniaturisation [3,6,7,8,9,10,11,12], there is a shortage of works recording the full 3D radiative characterisation of these antennas using these substrates.…”

Section: Introductionmentioning

confidence: 99%

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Radiation Efficiency Analysis of Balanced-Impedance Hexaferrite Substrate for Antenna Miniaturisation

James

Hilton²,

Beach³

2017

Loughborough Antennas &Amp; Propagation Conference (LAPC 2017)

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. AbstractAntenna miniaturisation in the low UHF band is required since the wavelengths are large compared to portable consumer terminals. Magneto-dielectric substrates such as hexaferrites which increase µ r as well as ε r have received attention for their miniaturisation potential, however there is a shortage of published results for the radiation efficiency of such antennas based on full 3D radiative characterisation in free space conditions. In this work, patch antennas fabricated on hexaferrite, FR-4 and RT5880 substrates were examined through simulation, fabrication and radiative measurement. While the frequency in hexaferrite was reduced by a factor of six compared to the RT5880 antennas, the efficiency in the hexaferrite antennas was low. The combined effect of the losses in the hexaferrite and the electrically small size of the resulting patch antenna limits its use in long range transmitting applications, though it may still find application in short range or receiver applications.

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Section: Review Of Hexaferrite Antennasmentioning

confidence: 99%

Section: Review Of Hexaferrite Antennasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Radiation Efficiency Analysis of Balanced-Impedance Hexaferrite Substrate for Antenna Miniaturisation

James

Hilton²,

Beach³

2017

Loughborough Antennas &Amp; Propagation Conference (LAPC 2017)

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“…Recently, various antennas for UAV applications have been reported, including horn antennas, conductive spray‐coated three‐dimensional‐printed antennas, and patch antennas. For UAV applications, antennas should be aerodynamically designed and easily installable on the aircraft fuselage to avoid potential performance deterioration.…”

Section: Introductionmentioning

confidence: 99%

Low‐profile tilted‐beam waveguide slot antenna using corrugations for UAV applications

Jin

Lee

Woo

et al. 2018

Micro & Optical Tech Letters

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We propose a low‐profile tilted‐beam waveguide slot antenna using corrugations for unmanned aerial vehicle (UAV) applications. The proposed antenna consists of a WR‐90 rectangular waveguide with a central slot on top and two asymmetric corrugations. The antenna satisfies a 10‐dB return loss from 9.82 to 10.18 GHz. To realize the low‐profile characteristic, the proposed antenna is fed from the flank instead of the bottom of the waveguide. In addition, the proposed antenna attains a tilted beam pointing 45 degrees from the broadside direction due to the asymmetric corrugations on the conducting plate. The antenna has a measured peak gain of 6.95 dBi at the center frequency of the operation band, which satisfies the gain requirement for UAV applications. The experimental and simulated results of the proposed antenna are in good agreement.

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“…Integration and miniaturization of antenna are becoming important issues for mobile electronics applications [1][2][3]. Therefore, antenna size and impedance matching are recent research subjects to study.…”

Section: Introductionmentioning

confidence: 99%

Impedance Matching of Electrically Small Antenna with Ni-Zn Ferrite Film

Lee¹,

Hong²,

Lee³

et al. 2013

Journal of Magnetics

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We demonstrate that a partial loading of Ni 0.5 Zn 0.5 Fe 2 O 4 (Ni-Zn ferrite) film remarkably improves impedance matching of electrically small Ba 3 Co 2 Fe 24 O 41 (Co 2 Z) hexaferrite antenna. A 3 µm thick Ni-Zn ferrite film was deposited on a silicon wafer by the electrophoresis deposition process and post-annealed at 400 o C. The fabricated Ni-Zn ferrite film has saturation magnetization of 268 emu/cm 3 and coercivity of 89 Oe. A partial loading of the Ni-Zn ferrite film on the Co 2 Z hexaferrite helical antenna increases antenna return loss to 24.7 dB from 9.0 dB of the Co 2 Z antenna. Experimental results show that impedance matching and maximum input power transmission to the antenna without additional matching elements can be realized, while keeping almost the same size as the Co 2 Z antenna size.

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Dual-Polarized Hexaferrite Antenna for Unmanned Aerial Vehicle (UAV) Applications

Cited by 24 publications

References 10 publications

Radiation Efficiency Analysis of Balanced-Impedance Hexaferrite Substrate for Antenna Miniaturisation

Radiation Efficiency Analysis of Balanced-Impedance Hexaferrite Substrate for Antenna Miniaturisation

Low‐profile tilted‐beam waveguide slot antenna using corrugations for UAV applications

Impedance Matching of Electrically Small Antenna with Ni-Zn Ferrite Film

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