Compact magneto-electric dipole antenna with low-profile for LTE femtocell base stations

Liu, Yanyang; Li, Minquan; Wu, Yingbo; Xia, Xiaopan

doi:10.1109/apcap.2017.8420315

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…Extensive efforts have also been made to reduce the overall size of antennas. [14][15][16][17] In ref. 14, the low cutoff frequency was decreased by loading parasitic elements above the antenna.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, reducing the size degrades the operating bandwidth. Extensive efforts have also been made to reduce the overall size of antennas 14–17 . In ref.…”

Section: Introductionmentioning

confidence: 99%

“…By adopting a similar design principle of minimum ground, a compact magnetoelectric dipole antenna was developed in ref. 17, which comprised a horizontal electric dipole, a pair of folded shorted patches, and a minimum ground. The antenna provided 84% bandwidth with a compact size of

0.3{\lambda }_{L}\times 0.26{\lambda }_{L}\times 0.1{\lambda }_{L}

.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturization of a wideband magnetoelectric dipole antenna by folding

Chen

Hao

et al. 2022

Micro & Optical Tech Letters

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In this Letter, we investigate a wideband magnetoelectric dipole antenna miniaturized by folding. In the proposed design, a folded L‐shaped electric dipole is used instead of the conventional half‐wavelength horizontal electric dipole, and a pair of vertically folded shorted patches act as a magnetic dipole, producing a miniaturized radiator. Furthermore, a small‐size U‐shaped reflector replaces the traditional large‐size planar reflector, resulting in a decrease in the low end of the frequency band, while the high end of the frequency band remains almost unchanged. A better impedance matching is also obtained over the entire operating frequency band. Ultimately, a miniaturized overall structure and a wide bandwidth are obtained simultaneously. The overall size of the proposed antenna is only bold-italic0 bold-italic. bold-italic25 λ L bold-italic× bold-italic0 bold-italic. bold-italic25 λ L bold-italic× bold-italic0 bold-italic. bold-italic12 λ L ${\boldsymbol{0}}{\boldsymbol{.}}{\boldsymbol{25}}{{\boldsymbol{\lambda }}}_{{\boldsymbol{L}}}{\boldsymbol{\times }}{\boldsymbol{0}}{\boldsymbol{.}}{\boldsymbol{25}}{{\boldsymbol{\lambda }}}_{{\boldsymbol{L}}}{\boldsymbol{\times }}{\boldsymbol{0}}{\boldsymbol{.}}{\boldsymbol{12}}{{\boldsymbol{\lambda }}}_{{\boldsymbol{L}}}$ (where λ L ${{\boldsymbol{\lambda }}}_{{\boldsymbol{L}}}$ is the longest operating wavelength), which is 82% smaller than the size of the original design, but the proposed antenna can still obtain a large bandwidth of 120% (1–4 GHz) for VSWR < 2. Furthermore, stable radiation patterns are realized with an average gain of 5 dBi within the operating frequency band.

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Section: Introductionmentioning

confidence: 99%

“…Moreover, reducing the size degrades the operating bandwidth. Extensive efforts have also been made to reduce the overall size of antennas 14–17 . In ref.…”

Section: Introductionmentioning

confidence: 99%

0.3{\lambda }_{L}\times 0.26{\lambda }_{L}\times 0.1{\lambda }_{L}

.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturization of a wideband magnetoelectric dipole antenna by folding

Chen

Hao

et al. 2022

Micro & Optical Tech Letters

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A compact wideband dual‐polarized magnetoelectric dipole antenna

Chen

Hao

et al. 2022

Int J RF Mic Comp-Aid Eng

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Magnetoelectric dipole antennas have attracted attention owing to their high performance, however, they are structurally complex and large. Attempts have been made to reduce their size, but the wideband properties and compact size are yet to be achieved simultaneously. This article proposes a dual-polarized magnetoelectric dipole antenna to address these issues. The proposed antenna utilizes vertically oriented folded shorted patches to function as magnetic dipoles, which effectively enlarges the impedance bandwidth and stabilizes the antenna gain in the higher frequency. Additionally, it includes four L-shaped metallic plates placed vertically on the reflector. Owing to the coupling with

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Cylindrical conformation and miniaturization of cavity-backed magnetoelectric antenna with an outer Γ-shaped probe

Causse,

Bernard,

Collardey

et al. 2023

Int. J. Microw. Wireless Technol.

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In this article, the cylindrical conformation of a linearly polarized cavity-backed magnetoelectric (ME) antenna is studied. Starting from a planar ME antenna presenting a wide bandwidth due to a specific design of its feeding probe, the impact of conformation is shown; the coupling between the ME dipole and the cavity walls is demonstrated to be the key element to keep a wideband behavior. Conformal antennas offering the same impedance bandwidth as the planar antenna are presented operating at Global Navigation Satellite System frequencies (1.164–1.61 GHz). As a result of the conformation, the antenna size has to be reduced to maintain the coupling and a wideband behavior. A prototype conformed to a 44-mm radius cylinder was built using low-cost additive manufacturing. External dimensions of 62 × 62 × 35 mm3 (0.285 × 0.285 × 0.16λ03, where λ0 is the wavelength at 1.38 GHz) were obtained, showing a ground plane area reduction of 46% compared to the planar antenna with the same materials. The conformal antenna also exhibits very steady radiation properties with a gain of around 4.5 dBi and a very similar and stable 3 dB beamwidth around 113° in E- and H-planes. A relatively good agreement is found between measurements and simulation.

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Compact magneto-electric dipole antenna with low-profile for LTE femtocell base stations

Cited by 5 publications

References 8 publications

Miniaturization of a wideband magnetoelectric dipole antenna by folding

Miniaturization of a wideband magnetoelectric dipole antenna by folding

A compact wideband dual‐polarized magnetoelectric dipole antenna

Cylindrical conformation and miniaturization of cavity-backed magnetoelectric antenna with an outer Γ-shaped probe

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