A New Approach for Synthesizing Both the Radiation and Scattering Patterns of Linear Dipole Antenna Array

Zhang, S.; Gong, Shuxi; Guan, Ying; Lu, Bin

doi:10.1163/156939310791285137

Cited by 13 publications

(9 citation statements)

References 13 publications

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“…Zhang et al [114,115] presented both the radiation and scattering patterns of the linear dipole array in the presence of coupling. The radiation and scattered fields are determined in terms of self-and mutual impedance and terminal load impedance.…”

Section: Radar Cross Section (Rcs)mentioning

confidence: 99%

Mutual Coupling in Phased Arrays: A Review

Singh

Sneha

Jha

2013

International Journal of Antennas and Propagation

124

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The mutual coupling between antenna elements affects the antenna parameters like terminal impedances, reflection coefficients and hence the antenna array performance in terms of radiation characteristics, output signal-to-interference noise ratio (SINR), and radar cross section (RCS). This coupling effect is also known to directly or indirectly influence the steady state and transient response, the resolution capability, interference rejection, and direction-of-arrival (DOA) estimation competence of the array. Researchers have proposed several techniques and designs for optimal performance of phased array in a given signal environment, counteracting the coupling effect. This paper presents a comprehensive review of the methods that model and mitigate the mutual coupling effect for different types of arrays. The parameters that get affected due to the presence of coupling thereby degrading the array performance are discussed. The techniques for optimization of the antenna characteristics in the presence of coupling are also included.

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Section: Radar Cross Section (Rcs)mentioning

confidence: 99%

Mutual Coupling in Phased Arrays: A Review

Singh

Sneha

Jha

2013

International Journal of Antennas and Propagation

124

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“…The out‐of‐band RCS is reduced using absorbing materials as a ground plane. [ 30–45 ] By studying different works in the literature for the strategy of the low‐backscattering antenna described earlier, we suggested a novel antenna array model that realized a drastic decrease of the RCS. The antenna array's out‐of‐band RCS property is also achieved by replacing the metallic ground with a metasurface based on an AMC.…”

Section: Introductionmentioning

confidence: 99%

Coding Artificial Magnetic Conductor Ground and Their Application to High‐Gain, Wideband Radar Cross‐Section Reduction of a 2×2 Antenna Array

Saleem

Saifullah

2021

Physica Status Solidi (a)

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A new technique is proposed for designing a low‐scattering 2 × 2 antenna array using strategic coding metasurface ground for wideband bistatic and monostatic backscattered energy level reduction. Two various artificial magnetic conductor (AMC) units cells are organized like a chessboard to obtain an effective 180° ± 37° reflection phase difference over a broadband frequency range. The low‐backscattering microstrip antenna array is achieved based on the destructive interference theory and diffusion property of AMC unit cells. Simulations show that the proposed antenna array has a considerable backscattering field level reduction of 4.7–18 GHz for both the x‐ and y‐polarization incident waves. It should also be noted that the maximum reduction of backscattered energy at a frequency of 7.2 GHz is −18 dB. The bistatic backscattering performance of the antenna is also given at different frequencies. Both a reference and a proposed prototype are fabricated, and the results are analyzed. Measurements of the fabricated prototype coincide well with simulations.

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“…For advanced development, some studies extend the single dipole to dipole antenna array. For example, Zhang et al [23] proposed a new approach for simultaneously synthesizing the radiation and scattering patterns of linear dipole antenna array, and Laviada-Martinez et al [24] studied the problem in computing a safety perimeter around the antenna. Accordingly, the authors proposed a new analytical model for the quantitative prediction of material contrasts in scattering-type near-field optical microscopy based upon a modified model of the nearfield interaction field.…”

Section: Introductionmentioning

confidence: 99%

Phenomenological Model Combining Dipole-Interaction Signal and Background Effects for Analyzing Modulated Detection in Apertureless Scanning Near-Field Optical Microscopy

Liao¹,

Lo²

2011

PIER

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Abstract-Modulation methods such as homodyne and heterodyne detections are employed in A-SNOM in order to eliminate serious background effects from scattering fields. Usually, the frequencymodulated detection signal in apertureless scanning near-field optical microscopy (A-SNOM) is generally analyzed using a simple dipoleinteraction model based only on the near-field interaction. However, the simulated A-SNOM spectra obtained using such models are in poor agreement with the experimental results since the effects of background signals are ignored. Accordingly, this study proposes a new phenomenological model for analyzing the A-SNOM detection signal in which the effects of both the dipole-interaction and the background fields are taken into account. It is shown that the simulated A-SNOM spectra for 6H-SiC crystal and polymethylmethacrylate (PMMA) samples are in good agreement with the experimental results. The validated phenomenological model is used to identify the experimental A-SNOM parameter settings which minimize the effects of background signals and ensure that the detection signal approaches the pure nearfield interaction signal. Finally, the phenomenological model is used to evaluate the effects of the residual stress and strain in a SiC substrate on the corresponding A-SNOM spectrum.

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A New Approach for Synthesizing Both the Radiation and Scattering Patterns of Linear Dipole Antenna Array

Cited by 13 publications

References 13 publications

Mutual Coupling in Phased Arrays: A Review

Mutual Coupling in Phased Arrays: A Review

Coding Artificial Magnetic Conductor Ground and Their Application to High‐Gain, Wideband Radar Cross‐Section Reduction of a 2×2 Antenna Array

Phenomenological Model Combining Dipole-Interaction Signal and Background Effects for Analyzing Modulated Detection in Apertureless Scanning Near-Field Optical Microscopy

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