Sparse Antenna Array With Flat-Top and Sharp Cutoff Radiation Patterns

Xu, Mingming; Zhang, Chen; Qiao, Hao; Zhang, Qingjun; Deng, Changjiang; Yu, Weihua

doi:10.1109/tap.2023.3262362

Cited by 4 publications

(4 citation statements)

References 31 publications

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“…The range of changes and obtained values of the structural parameters of the lens are shown in Table 2. The main parameters are obtained from optimization as P = [8,9,4,5,2,4,6,5,6,6]. The lens is fabricated by 3D-printed technology.…”

Section: Validation and Discussionmentioning

confidence: 99%

“…[1][2][3][4][5] The conventional technique for obtaining flat-top beams is using array antenna. 6,7 In Xu et al 8 and Wang et al, 9 the antennas with flat-top beams, which are applied in base station communication, are designed by adjusting the cells of the arrays at 1.71-2.17 and 2.3-2.69 GHz. However, the antennas designed in the papers have large size, complex feed network, and high processing cost.…”

Section: Introductionmentioning

confidence: 99%

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An E‐band 3D‐printed dielectric lens antenna with flat‐top beam designed by hybrid optimization algorithm

Zheng,

Peng,

Zhu

et al. 2024

Micro & Optical Tech Letters

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An all‐dielectric lens antenna (LA), with flat‐top radiation patterns in both E‐ and H‐planes, is proposed. The antenna covers the 64–70 GHz band. The dielectric LA consists of a source horn (LB‐12‐15‐A with WR12) and a dielectric lens. The lens is composed of multiple layers of dielectric rings with different heights. The structural parameters of the dielectric lens are optimized by a hybrid optimization algorithm (particle swarm optimization [PSO]‐genetic algorithm [GA]) that involves genetic operations of GA and PSO. The hybrid algorithm is beneficial to enhance the optimization efficiency, and an objective function is designed to optimize the beam width, the S11, and the sidelobe level (SLL). Both the simulated and measured results show that the dielectric LA provides good flat‐top radiation patterns within the desired band. Moreover, the dielectric lens is manufactured by three‐dimensional‐printed technology, which allows for low cost, easy manufacturing, and lightweight.

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Section: Validation and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An E‐band 3D‐printed dielectric lens antenna with flat‐top beam designed by hybrid optimization algorithm

Zheng,

Peng,

Zhu

et al. 2024

Micro & Optical Tech Letters

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“…In the last decades, synthesis of such a radiation pattern is the focus of the researchers. For example, it can be mentioned the recent works of [14] or [15] for realizing the flat-top and sharp cutoff pattern wherein the roll-off of, respectively, 0.5 dB/degree and 1 dB/degree are achieved. However, these antennas are not suitable for mitigating the lobing fades.…”

Section: Introductionmentioning

confidence: 99%

Realizing Flat-Top Radiation Pattern with Sharp Cutoff for Reducing Lobing Fades

Amini,

Ghasemi,

Khodadadi

et al. 2024

2024 18th European Conference on Antennas and Propagation (EuCAP)

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In this paper, synthesis of the flat-top radiation pattern with sharp cutoff for reducing the lobing fades due to the presence of the earth is investigated. To this end, first the propagation factor is investigated. Then based on the propagation factor, the antenna pattern is examined at different levels of the cutoff to achieve a flat-top radiation with low level of lobing fades. Finally, synthesizing the desired radiation pattern is investigated through Woodward-Lawson method. Our studies reveal that that antenna with large length (> 12λ) provides the desired flat-top pattern with the appropriate cutoff. The aperture distribution of the desired pattern is provided and discussed.

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“…Antenna arrays with flat-top beam, which means stable gain with extremely low fluctuation in the required region, are widely applied in base stations [1][2][3], radio frequency identification [4][5][6], electronic toll collection [7][8][9][10][11][12], and other wireless communication systems [13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

The Design of a Circularly Polarized Antenna Array with Flat-Top Beam for an Electronic Toll Collection System

Xu,

Cai

2023

Sensors

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Electronic toll collection (ETC), known as a non-stop toll collection system which can automatically realize payment by setting the identification antenna at the entrance, is always suffering from information exchange interruption caused by beam switching. A circularly polarized sector beam antenna array operating at 5.8 GHz with flat-top coverage is proposed, based on the weighted constrained method of the maximum power transmission efficiency (WCMMPTE). By setting the test receiving antennas at the specific angles of the ETC antenna array to be designed, constraints on the received power are introduced to control the radiation pattern and obtain the optimized distribution of excitations for antenna elements. A 1-to-16 feeding network, based on the microstrip transmission line theory is designed to feed a 4 × 4 antenna array. Simulation results show that the half-power beamwidth covers an angular range of −30° to 30° while the axial ratio is below 3dB, which meets the ETC requirements. Furthermore, the gain fluctuation among the needed range of −30° to 30° is lower than 0.7 dB, which is suitable for the ETC system to achieve a stable signal strength and uninterrupted communication.

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Sparse Antenna Array With Flat-Top and Sharp Cutoff Radiation Patterns

Cited by 4 publications

References 31 publications

An E‐band 3D‐printed dielectric lens antenna with flat‐top beam designed by hybrid optimization algorithm

An E‐band 3D‐printed dielectric lens antenna with flat‐top beam designed by hybrid optimization algorithm

Realizing Flat-Top Radiation Pattern with Sharp Cutoff for Reducing Lobing Fades

The Design of a Circularly Polarized Antenna Array with Flat-Top Beam for an Electronic Toll Collection System

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