Dual-Wideband Magnetoelectric Dipole Antenna With Director Loaded

Tao, Junwu; Feng, Quanyuan; Liu, Tao

doi:10.1109/lawp.2018.2869034

Cited by 37 publications

(23 citation statements)

References 10 publications

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“…By adding a parasitic patch above the antenna, a U-shaped folded ME dipole antenna with a wide bandwidth of 72.7% (1.61-3.45 GHz) was proposed in [4]. To realise dual-band capability, ME dipole antennas with different structures have appeared, such as multilayer structure [5][6][7], parasitic patch [8,9], special E-dipole [10,11] etc. In [5], a dual-layer ME dipole antenna fed by a U-shaped feeding line was devised, the lower layer of which was used to implement the lower band and the upper layer of the upper band.…”

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confidence: 99%

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Dual‐wideband dual‐polarised magnetoelectric dipole antenna for 4G/5G microcell base station

et al. 2020

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A novel dual-wideband dual-polarised magnetoelectric (ME) dipole antenna for the fourth generation (4G)/fifth generation (5G) microcell base station is proposed. Using a pair of orthogonal ME dipoles and Γ-shaped tapered cross feeding lines, the initial antenna achieves dualband and dual-polarised. Then, four U-shaped gaps, added in electric dipoles, effectively extend the lower impedance bandwidth. Finally, a circular parasitic patch with capacitive properties is innovatively loaded above the ME antenna, which obviously reduces the highresonant frequency from 5.5 to 4.9 GHz. Meanwhile, a box-shaped reflector is employed to achieve stable gain and radiation patterns. As a result, the measured results show the good dual-wideband performance of 52.4% (2.14-3.66 GHz) and 7.4% (4.68-5.04 GHz) with voltage standing wave ratio (VSWR) < 2, high isolation (>25 dB) and high gain (9.5 and 5.5 dBi, respectively). In addition, a stable radiation pattern with a half-power beam width of 63.5°+ 6.8°and good cross-polarisation discrimination (>20 dB) on the E-plane is realised over these two bands.

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confidence: 99%

“…In addition, a double reflecting floor was adapted to effectively improve the radiation pattern in the upper band. By properly designing the feeding and antenna size, a dual-band ME dipole antenna was proposed in [11]. Then, a parasitic E-dipole and a director were designed to broaden the lower and upper band, respectively.…”

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confidence: 99%

Dual‐wideband dual‐polarised magnetoelectric dipole antenna for 4G/5G microcell base station

et al. 2020

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“…Magnetoelectric (ME) dipole antennas have been widely studied since its introduction by K. M. Luk in 2006 [ 3 ]; by combining and exciting a magnetic dipole and an electric dipole together, the complementary antennas show good electrical characteristics, including wide impedance bandwidth (BW) of 47%, stable gain of about 8 dBi, low back radiation, low cross-polarization, and symmetrical E- and H- plane radiation patterns. In the last decade, several improved designs have been presented where efforts were made to increase the BW by modifying the shape of the dipoles [ 4 ], using parasitic elements [ 5 ] or specific cavities [ 6 ] and defected ground structures (DGS) [ 7 ]. However, these designs have an obvious drawback that the large antenna height is about one-quarter wavelengths, which is inappropriate to some practical applications.…”

Section: Introductionmentioning

confidence: 99%

Compact Bandwidth Enhanced Cavity-Backed Magneto-Electric Dipole Antenna with Outer Γ-Shaped Probe for GNSS Bands

Causse

Rodriguez

Bernard

et al. 2021

Sensors

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In this paper, a wideband small cavity-backed magneto-electric (ME) antenna is proposed. This antenna is linearly polarized and designed to cover all the Global Navigation Satellite System (GNSS) bands. It exhibits small external dimensions of 90 × 90 × 40 mm3 (0.34 × 0.34 × 0.15 λ3 at lowest frequency) and achieves a wide impedance bandwidth of 40.5% (from 1.14 to 1.72 GHz) due to the excitation of a third resonance of the ME structure. It also provides a regular broadside gain of 5.2 dBi and stable radiation pattern in both E and H planes of the antenna.

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“…U-shaped inverted-F antenna for the UHF band is designed to surround the dipole for the UWB band. In [6], a wideband three-dimensional dual-band magnetoelectric (ME) dipole antenna is presented for WLAN and WiMAX applications. A full-metal rectangular director is loaded right above the ME dipole antenna and resonates at around 3.6 GHz due to the excitation of the long electric dipole.…”

Section: Introductionmentioning

confidence: 99%

High-Gain SIR Dual-Band Antenna Based on CSRR-Enhanced SIW for 2.4/5.2/5.8 GHz WLAN

Feng

Kang

Dong

et al. 2020

International Journal of Antennas and Propagation

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This paper presents a dual-band step impedance resonator (SIR) antenna based on metamaterial-inspired periodic structure of coupled complementary split-ring resonators substrate-integrated waveguide (CSRR-SIW). The antenna supports wireless local area networks (WLAN) bands at 2.4/5.2/5.8 GHz. The CSRRs and two branches of the SIR element are etched on the top and bottom metal surfaces of the substrate. The SIR element produces a fundamental frequency f1 at 2.4 GHz and a second harmonic frequency fs2 at 5.7 GHz. Meanwhile, the CSRRs produces a resonant frequency at high-frequency band around 5.2 GHz, which can be combined with the second harmonic frequency fs2 at 5.7 GHz. The high-frequency bandwidth can then be broadened. The simulated and measured results show that the dual operation bands with bandwidths of 16% from 2.25 GHz to 2.64 GHz and 18.2% from 5 GHz to 6 GHz for |S11| < −10 dB are achieved. Meanwhile, the proposed antenna has peak gains ranging from 6.5 dBi to 7 dBi and from 7 dBi to 7.7 dBi in the lower and upper bands, respectively. Compared with many previously reported dual-band antenna designs, the proposed antenna achieves comparable bandwidth performance and larger gain per unit area with a relatively smaller size. Moreover, the simple structure renders the proposed antenna has the advantage of easy-processable and cost-effective implementation.

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Dual-Wideband Magnetoelectric Dipole Antenna With Director Loaded

Cited by 37 publications

References 10 publications

Dual‐wideband dual‐polarised magnetoelectric dipole antenna for 4G/5G microcell base station

Dual‐wideband dual‐polarised magnetoelectric dipole antenna for 4G/5G microcell base station

Compact Bandwidth Enhanced Cavity-Backed Magneto-Electric Dipole Antenna with Outer Γ-Shaped Probe for GNSS Bands

High-Gain SIR Dual-Band Antenna Based on CSRR-Enhanced SIW for 2.4/5.2/5.8 GHz WLAN

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