A Compact High Gain Wideband Metamaterial Antenna for Sub-6 GHz Applications

Abbas, Ahmed A.; Samet, Balasem S.

doi:10.13052/2022.aces.j.370807

Cited by 5 publications

(9 citation statements)

References 10 publications

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“…However, they are generally low gain, so improving gains for these antennas is a challenge for researchers. Several solutions have been proposed, for example, using parasitic sheets [13,14], deploying stacked patches [15,16] and implementing metamaterials [17,18,[27][28][29][30][31]. The use of the parasitic patch in [13] can improve gain very well, and it can also extend the circular polarization bandwidth for antennas deployed on the same plane.…”

Section: Antenna Designmentioning

confidence: 99%

A Wideband, High Gain and Low Sidelobe Array Antenna for Modern ETC Systems

Tran,

Khuat,

Phi

2023

ACES Journal

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Modern electronic toll collection (ETC) systems are currently moving towards a system design that is capable of fast and optimal payment handling for a single lane. Thus, the antenna of a roadside reader unit (RSU) needs to provide sufficient coverage over the vehicle lane during a payment cycle. In this paper, a left-hand circularly polarized (LHCP) 2×4 array antenna is proposed for European standard RSU readers at 5.8 GHz. The proposed array antenna consists of patch element antennas with parasitic elements to enhance gain and bandwidth. Sequential phase rotation feeding networks are applied to make the antenna low-profile. By using the optimized nut-shaped metasurface, the antenna can achieve higher gain due to concentrated radiation power in the boresight direction. The antenna has a wide impedance bandwidth of 2.34 GHz (37.73%), axis ratio bandwidth of 2.07 GHz (32.9%), high gain of 17 dBi, and sidelobe level (SLL) lower than -15 dB at 5.8 GHz. Especially, half-power beamwidths are 34∘ and 17∘ in horizontal and vertical planes, respectively, which covers sufficient space for a single lane while avoiding interference with other lanes. The performance of the proposed antenna is verified by measured results. It showed that the proposed antenna is a promising candidate for ETC applications.

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Section: Antenna Designmentioning

confidence: 99%

A Wideband, High Gain and Low Sidelobe Array Antenna for Modern ETC Systems

Tran,

Khuat,

Phi

2023

ACES Journal

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“…Metasurface [7][8][9] is a sub-wavelength unit with special manipulability for amplitude, phase, and polarization of electromagnetic (EM) waves, which has been applied in many fields, such as metalenses [10][11], perfect absorbers [12][13], holograms [14][15], polarization controllers [16][17], anomalous reflection [18][19], and radar cross-section (RCS) reduction [20][21]. As an important type of metasurface, phase gradient metasurface (PGM) consists of a series of phase discontinue cells, which were first mentioned by Yu [22].…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for the Low-detectable Dihedral Corner Utilizing Phase Gradient Metasurface based on Phase Cancellation Mechanism

He,

Xie,

Liu

et al. 2023

ACES Journal

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In this paper, a phase gradient metasurface (PGM) is proposed to reduce the radar cross-section (RCS) of the dihedral corner based on phase cancellation mechanism. The phase cancellation mechanism is used to derive the formula of the low-detectable dihedral corner for the first time, which is directly used to deal with the wave path difference problem that introduced by the dihedral corner. According to the formula, six sub-cells are designed with a 60∘ phase difference, which is arranged by sub-array along the y-axis. The reflection coefficients of the selected sub-cells are all above 0.8. The RCS reduction of the dihedral corner achieves over 10 dB from 4.9 GHz to 5.14 GHz under an incident angle of 45∘. In particular, the RCS reduction of the low-detectable dihedral corner is 13.97 dB at 5 GHz. Meanwhile, the proposed dihedral corner with PGM also has an excellent performance of angle insensitivity ranging from 0∘ to 75∘. To further verify our design, the dihedral corner with PGM is manufactured by a low-cost printing circuit board technique. The measured results agreed well with the simulations, and both of them show an excellent performance of RCS reduction in the operating frequency band, regardless of any angle within 75∘. Overall, the dihedral corner with PGM that we proposed has the advantages of being low-detectable, low-profile, low-cost, lightweight, and it is easy to design and manufacture. It has wide application prospects in the future.

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“…A simple planar antenna is proposed for 5G cellular applications [7]. A CPW fed two-element MIMO antenna for dual-band applications is presented [8].…”

Section: Introductionmentioning

confidence: 99%

“…Due to its bene ts, such as increased data rates and channel capacity, 5G wireless communication is in demand. The combination of MIMO with 5G cellular systems play a tremendous role in current wireless cellular communication [4][5][6].A simple planar antenna is proposed for 5G cellular applications [7]. A CPW fed two-element MIMO antenna for dual-band applications is presented [8].…”

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confidence: 99%

Compact and asymmetric fed modified hexagonal shaped multiple-input multiple-output (MIMO) antenna for 5G sub: 6 GHz (N77/N78 & N79) and WLAN applications

Gollamudi

Narayana

Prasad

2022

Analog Integr Circ Sig Process

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In the current work, a compact and modi ed hexagonal-shaped circular MIMO antenna for WLAN and 5G sub-6GHz applications is presented. The proposed MIMO antenna works in the band of 2.95 to 6.3 GHz, that covers the complete range of 5G sub: 6 GHz (N77/N78 & N79) and WLAN bands. The overall working region is obtained with isolation of greater than 15 dB. With an impedance of 50 strip line, the suggested MIMO antenna is excited using an asymmetric feeding approach. Simulated and measured results from fabricated prototypes are used to con rm the diversity and radiation performance of the proposed MIMO antenna. The diversity metric parameters ECC, DG, TARC, CCL, and MEG values demonstrate strong agreement. The construction is created on a FR4 substrate with dimensions of 20 × 34 mm 2 , 1.6 mm in height, and 4.4 as the constant. The structure has e ciency and gain values of above 83% and 0.2 to 3 dBi, respectively. IntroductionMultipath fading problems in the free space environment are reduced by a new technology in wireless communication known as the Multiple Input Multiple Output (MIMO) technology. The additional features of MIMO technology are channel capacity improvement, higher data rate, quality transmission, and reliability in transmission. Now a days most electronic gadgets are portable. The users demand portable devices with high-speed data rates and quality of transmission. The MIMO technology is very much suitable for user demands. In MIMO technology number of elements are placed in a limited space, there fore high coupling is introduced between the elements. Few techniques are proposed by the researchers and also checked [1][2][3]. Day by day cellular communication is increasing rapidly. Due to its bene ts, such as increased data rates and channel capacity, 5G wireless communication is in demand. The combination of MIMO with 5G cellular systems play a tremendous role in current wireless cellular communication [4][5][6].A simple planar antenna is proposed for 5G cellular applications [7]. A CPW fed two-element MIMO antenna for dual-band applications is presented [8]. A microstrip patch antenna designed for 5G NR bands is speci ed [9]. For 5G sub: 6 GHz and WLAN applications, a differently fed recon gurable MIMO antenna is proposed [10]. Microstrip patch dipole antenna for 4G LTE and 5G NR bands is designed [11]. A two-element transparent MIMO antenna for 5G sub: 6 GHz applications is designed [12]. A semi-circular arc-shaped MIMO antenna for 5G and WLAN bands with a modi ed strip placed between them to improve the isolation is proposed [13]. For 5G, WLAN, and WiMAX bands, a triple-band MIMO antenna is constructed [14]. Array antenna for 5G cellular applications is presented [15]. A small wideband MIMO antenna for 5G and WLAN applications is designed [16]. Compact two and four-element MIMO antenna for UWB applications with loaded square patch strips is used for isolation enhancement [17]. The twoelement dual-band antenna that covers 5G N77 and N79 bands is developed [18]. Some of the most recent papers in the...

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A Compact High Gain Wideband Metamaterial Antenna for Sub-6 GHz Applications

Cited by 5 publications

References 10 publications

A Wideband, High Gain and Low Sidelobe Array Antenna for Modern ETC Systems

A Wideband, High Gain and Low Sidelobe Array Antenna for Modern ETC Systems

A Novel Method for the Low-detectable Dihedral Corner Utilizing Phase Gradient Metasurface based on Phase Cancellation Mechanism

Compact and asymmetric fed modified hexagonal shaped multiple-input multiple-output (MIMO) antenna for 5G sub: 6 GHz (N77/N78 & N79) and WLAN applications

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