Vertically Polarized Loop-Fed Slot Antenna With Top-Loading Metasurface for Omnidirectional LTE Base Station Application

Xu, Yizhen; Wen, Sichao; Dong, Yuandan

doi:10.1109/lawp.2021.3113179

Cited by 5 publications

(4 citation statements)

References 38 publications

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“…A comparison of our antenna with other counterparts in the open literature is provided in Table 2. Compared with the wideband patch antenna in [6], slot antenna in [8], and monopole antennas in [14][15][16], our antenna has advantages of better impedance matching, much lower gain variation over a wider frequency band with moderate gain, efficiency and size. Compared with the UBW loop antenna in [9], the proposed antenna achieves much better impedance matching and much lower gain variation.…”

Section: Measured Results and Discussionmentioning

confidence: 99%

“…Vertically polarized radiation can be achieved by patch antennas [5,6], slot antennas [7,8], loop antennas [9,10] and dipole antennas [11,12]. A center-fed patch-ring antenna [5] and a circular patch antenna with a coupled ring are studied to generate monopole like radiation.…”

Section: Introductionmentioning

confidence: 99%

“…These antennas have advantage of low profile, but they suffer from limited bandwidths of less than 28%. A vertically polarized U-shaped slot antenna [7] is proposed to provide a bandwidth of 15%, while a top-loading metasurface is used to improve the bandwidth of a crossed-slot antenna [8] to reach 54.5%. To enhance the bandwidth to 120%, a diamond-shaped loop antenna with a capacitive top hat is presented in [9].…”

Section: Introductionmentioning

confidence: 99%

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Ultra-Wideband Vertically Polarized Omnidirectional Antenna With Dual Metal Loops

Peng

et al. 2022

Front. Phys.

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An ultra-wideband vertically polarized monopole antenna having excellent omnidirectional radiation pattern is proposed. It consists of a four-sector monopole, dual metal loops and a metal reflector. The four-sector monopole is employed as radiator and excited by a 50 Ω coaxial cable to realize vertical-polarized omnidirectional radiation pattern and good impedance matching. Then two metal loops surrounding the monopole are used to further enhance the impedance matching and improve the gain variation. The antenna has an ultrawide bandwidth of 103% (1.63–5.1 GHz) for return loss > 15 dB. It also obtains a steady gain of 3.25 ± 1.35 dBi and a very small gain variation of less than 0.9 dBi within the ultrawide band. These performances indicate that the proposed antenna is competitive for 2G/3G/4G/5G indoor mobile communications.

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Section: Measured Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultra-Wideband Vertically Polarized Omnidirectional Antenna With Dual Metal Loops

Peng

et al. 2022

Front. Phys.

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“…On the one hand, metasurface is widely used in low reflection cross sections (RCS) [ 13 , 14 , 15 , 16 , 17 ] and filtering [ 18 , 19 , 20 , 21 ]. On the other hand, its multi-mode resonance characteristics show a prominent advantage in broadband [ 22 , 23 , 24 , 25 , 26 , 27 , 28 ], multi-band [ 29 ], and omnidirectional radiation [ 30 , 31 , 32 , 33 ] applications.…”

Section: Introductionmentioning

confidence: 99%

Low-Profile Millimeter-Wave Metasurface-Based Antenna with Enhanced Bandwidth

Han

Yan

et al. 2023

Micromachines

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A millimeter-wave broadband metasurface-based antenna with a low profile is proposed. In order to guide the mode excitation, the characteristic mode analysis (CMA) is used for the design and optimization of the proposed antenna. Four sets of coplanar patches with different dimensions on a thin printed circuit board are used to generate four adjacent broadside modes, which are directly fed by a coaxial probe. Then, to expand low-frequency bandwidth, a new resonant mode is introduced by etching slots on the parasite patch. Meanwhile, the extra mode introduced does not significantly change the radiation performance of the original modes. Moreover, dual slots are etched on the mid patch fed by the coaxial probe, which moves the orthogonal modes of the chosen modes out of the operating band to reduce cross-polarization levels. The proposed antenna realized 25.02 % (30–38.58 GHz) impedance bandwidth with dimensions of 1.423×1.423×0.029λ0 3 (λ0 is the wavelength at 34 GHz in free space), and the realized gain in the band is 8.35–11.3 dB.

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An Ultrawideband Vertically Polarized Omnidirectional Patch Antenna With Low Profile

Zhang

Dong

Wang³

et al. 2023

Antennas Wirel. Propag. Lett.

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Vertically Polarized Loop-Fed Slot Antenna With Top-Loading Metasurface for Omnidirectional LTE Base Station Application

Cited by 5 publications

References 38 publications

Ultra-Wideband Vertically Polarized Omnidirectional Antenna With Dual Metal Loops

Ultra-Wideband Vertically Polarized Omnidirectional Antenna With Dual Metal Loops

Low-Profile Millimeter-Wave Metasurface-Based Antenna with Enhanced Bandwidth

An Ultrawideband Vertically Polarized Omnidirectional Patch Antenna With Low Profile

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