Miniaturized Dual-Polarized Metasurface Antenna With High Isolation

Wang, Jing; Wang, Wei; Liu, Aimeng; Guo, Meng; Wei, Zhenyu

doi:10.1109/lawp.2021.3049856

Cited by 23 publications

(14 citation statements)

References 26 publications

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“…Figures 5a,b shows the radiation efficiency and gain of reference and proposed antennas, and their values are improved by about 20% and 3.5 dBi, respectively. It can be concluded that the proposed decoupling method can significantly enhance the efficiency and gain 18–20 21,22 .…”

Section: Experimental Validation and Resultsmentioning

confidence: 90%

“…It can be concluded that the proposed decoupling method can significantly enhance the efficiency and gain. [18][19][20] The envelope cross-correlation (ECC) is used to verify the independence of radiation patterns of elements and it can be calculated from the complex far-field patterns. 21,22 A comparison between reference and proposed antennas for ECC is plotted in Figure 5c.…”

Section: Experimental Validation and Resultsmentioning

confidence: 99%

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Isolation enhancement for four‐element MIMO antenna by using novel meandering technique

Cheng

Wang

2022

Micro & Optical Tech Letters

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The paper proposes a four‐element printed multiple‐input‐multiple‐output (MIMO) antenna with high isolation achieved by employing a compact decoupling method. The optimal shaping (meandering) of the monopole strip is adopted to realize decoupling at the working frequency band ranging from 5.004 to 5.320 GHz. The ports isolation S 21 ${S}_{21}$ and S 41 ${S}_{41}$ are improved by using self‐meandering technology with transmission zero occurring at the frequencies of 5.004 and 5.320 GHz, respectively. Meanwhile, the isolation S 31 ${S}_{31}$ is also greatly increased. The decoupling technique can significantly improve the isolations between the four ports of the proposed antenna, without the extra‐added structure. A four‐element MIMO antenna with an edge‐to‐edge spacing of 0.069 λ 0 ${\lambda }_{0}$ ( λ 0 ${\lambda }_{0}$ is the wavelength at 5.162 GHz in free space) is fabricated and measured. In the experiment, the proposed MIMO antenna has a relative bandwidth (reflection coefficient of −10 dB) of 6.12% with a range from 5.004 to 5.32 GHz. In addition, this design can significantly obtain higher port isolation, antenna efficiency, gain, and a lower envelope correlation coefficient (ECC).

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Section: Experimental Validation and Resultsmentioning

confidence: 90%

Section: Experimental Validation and Resultsmentioning

confidence: 99%

Isolation enhancement for four‐element MIMO antenna by using novel meandering technique

Cheng

Wang

2022

Micro & Optical Tech Letters

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“…A dual-polarized metasurface antenna has obtained a À10-dB bandwidths of 38.65% with a miniaturized radiation structure. 20 A novel microstrip antenna using a periodical grid-slotted surface was proposed in 21 with a Y-shaped feeding structure. A bandwidth of 43% has been achieved and the port isolation is more than 14.5 dB.…”

Section: Antenna Analysismentioning

confidence: 99%

“…Employing miniaturized radiating aperture, a dual-polarized metasurface antenna has obtained a À 10-dB bandwidth of 38.65%. 20 The bandwidth was further extended to be more than 43% in Reference 21 using a crossed aperture-coupled Y-shaped feeding structure. However, the port isolation is only 16 dB.…”

Section: Introductionmentioning

confidence: 99%

Low‐profile wideband dual‐polarized microstrip antenna element for 5G communication

Wang

Luo

2021

Micro & Optical Tech Letters

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A low-profile wideband dual-polarized microstrip antenna is presented for 5G communication. Using a periodical diamond structure, both low profile and wideband performance have been achieved with high port isolation. Relative bandwidths of 53.4% and 54.0% are obtained for two polarizations with a low profile of 0.047λ 0 , where λ 0 is the free space wavelength at the center frequency of 4.18 GHz. The dual aperture coupling method is adopted for each polarization direction and high-order modes are stimulated across the passband. The measured port isolation of more than 30 dB is obtained. Unidirectional radiation patterns have been achieved with low cross-polarization levels. The proposed dual-polarized microstrip antenna can offer a low-profile structure and wideband performance, which can be another potential candidate for the 5G communication.

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“…However, the radiating apertures for metantennas are generally large, and cause problems, such as grating lobes and mutual coupling. Many miniaturized metantennas have proposed, a two‐layer LP radiating aperture 0.46

λ_{0}

× 0.46

λ_{0}

× 0.06

λ_{0}

with gain greater than 6.5 dBi and bandwidth 30%, 8 a three layer dual‐polarized metantenna with miniaturized radiating aperture 0.37

λ_{0}

× 0.36

λ_{0}

× 0.13

λ_{0}

, bandwidths 43.72% and peak gain 8 dBi, 9 a CP metantenna with size 0.6

λ_{0}

× 0.49

λ_{0}

× 0.07

λ_{0}

, impedance bandwidth 33.7%, AR bandwidth 16.5% and peak gain 5.8 dBi, 10 a LP metantenna with size 0.4

λ_{0}

× 0.37

λ_{0}

× 0.05

λ_{0}

, center frequency 10.1 GHz, bandwidth 13.26% and peak gain 7.8 dBi 11 . A miniaturized CP metasurface unit cell with 56% size reduction by adding a pair of capacitive loading strips and the whole size of the antenna is 0.58

λ_{0} \times

0.58

λ_{0} \times

0.043

λ_{0}

12 …”

Section: Introductionmentioning

confidence: 99%

Miniaturized reconfigurable tri‐polarization metantenna based on characteristic mode analysis with high‐aperture efficiency

Huang

Wen

2021

Int J RF Microw Comput Aided Eng

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This article presents a miniaturized reconfigurable tri‐polarization metantenna with compact size of 0.58 λ0× 0.58 λ0× 0.04 λ0 (λ0 is the free space wavelength referring to the antenna center frequency). Metantenna means the metasurface is directly used as the antenna radiator aperture instead of an accessory. The metantenna is formed by miniaturized windmill like units, which is evolved from square patch units based on characteristic mode analysis, and 46% size reduction is achieved. Two PIN diodes are introduced into the feeding microstrip for switching among tri‐polarization. The measured −10 dB impedance bandwidths are 24.6% (3.24–4.15 GHz) and 24.1% (3.26–4.05 GHz) for circular polarization (CP) and linear polarization (LP), respectively. The measured overlapped 3 dB axial ratio (AR) bandwidth is 15% (3.4–3.95 GHz). The measured peak gains are 5.15 dBi, 5.21 dBic, and 5.25 dBic for LP, left hand (LH) CP and right hand (RH) CP, respectively. The aperture efficiency is 77.3%, 78.5%, and 79.1% for LP, LHCP, and RHCP, respectively. The measured AR beamwidth (BW) of LHCP in XZ‐plane and YZ‐plane is 192° and 174°, respectively, the measured ARBW of RHCP in XZ‐plane and YZ‐plane is 201° and 166°, respectively. The developed metantenna has the following advantages: broadband 3 dB AR bandwidth, wide ARBW > 166°, least PIN number (tri‐polarization with 2 PIN), and high‐aperture efficiency.

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Miniaturized Dual-Polarized Metasurface Antenna With High Isolation

Cited by 23 publications

References 26 publications

Isolation enhancement for four‐element MIMO antenna by using novel meandering technique

Isolation enhancement for four‐element MIMO antenna by using novel meandering technique

Low‐profile wideband dual‐polarized microstrip antenna element for 5G communication

Miniaturized reconfigurable tri‐polarization metantenna based on characteristic mode analysis with high‐aperture efficiency

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