Effect of Polarization on the Performance of Adaptive Antenna Arrays

Ka’bi, Amin H. Al

doi:10.12720/jcm.15.9.661-668

Cited by 19 publications

(5 citation statements)

References 11 publications

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“…ϕ = 90°). Therefore, it can be assumed that all signals lie in the x − y plane [13][14][15][16][17][18][19].…”

Section: Practical Signal Modelmentioning

confidence: 99%

Archives of Electrical Engineering

Al Ka'bi

2020

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The polarized electromagnetic waves have significant impact on the performance of adaptive antenna arrays. In this paper we investigate the effect of polarized desired and undesired signals on the performance of electronically steered beam adaptive antenna arrays. To achieve this goal, we built an analytical signal model for the adaptive array, in order to analyze, and compare the effect of polarized signals on the output SINRs (signal to interference plus noise ratios) of single-dipole, and cross-dipole adaptive antenna arrays. Based on a proof-of-concept experiment, and on MATLAB simulation results, it will be shown that cross-dipole adaptive antenna arrays exhibit better performance in comparison with single-dipole adaptive antenna arrays in presence of randomly polarized signals. However, single-dipole arrays show better performance under certain operating conditions.

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“…ϕ = 90°). Therefore, it can be assumed that all signals lie in the x − y plane [13][14][15][16][17][18][19].…”

Section: Practical Signal Modelmentioning

confidence: 99%

Archives of Electrical Engineering

Al Ka'bi

2020

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“…The technique transforms the complex angle estimation problem into a linear problem through the first-order Taylor approximation, which is directly solved and has been widely used and studied. The effect of polarization on adaptive Angle measurement of conformal array is analyzed in [15] 15 . The paper [16] 16 introduced a localization technique based on array antennas, employing spatial smoothing processing.…”

Section: Introductionmentioning

confidence: 99%

Generalized monopulse angle measurement for conformal antenna arrays

Liu,

Ding,

Zhang

et al. 2024

Fifteenth International Conference on Signal Processing Systems (ICSPS 2023)

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Generalized monopulse angle measurement technique is widely used in target angle estimation of digital multi-channel planar array active phased array in interference environment because of its simplicity and small amount of calculation. Due to the non-uniform, asymmetric and anisotropic characteristics of the conformal array, the conventional generalized monopulse angle measurement technique for planar array cannot be directly applied. As to this problem, this work proposes a generalized monopulse angle measurement method for conformal arrays. Firstly, based on the anisotropic element pattern model of conformal array, the subarray echo model of conformal array is established. Secondly, the conventional generalized monopulse angle measurement technique of planar array is modified for the conformal arrays, and the direct solution formulas of target azimuth and elevation angles are derived. Finally, the angle estimation accuracy of the proposed method is analyzed theoretically. The simulation results show that compared with the conventional generalized monopulse angle measurement method, the proposed method greatly improves the target angle estimation accuracy of the conformal array, and is consistent with the theoretical estimation accuracy. The method proposed in this work can effectively solve the problem of generalized monopulse angle measurement of conformal array in interference environment.

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“…To increase the bandwidth of the polarization conversion, [10] achieved a bandwidth of 59.5% using meandering lines with line polarization converted into line polarization and line polarization convert into circular polarization. In [11] and [12], the polarization conversion surface is utilized to improve the performance of the antenna. By loading the PCM, a RCS reduction array antenna is obtained [13].…”

Section: Introductionmentioning

confidence: 99%

A frequency-tunable dual-band polarization conversion metasurface

Wang

Luo

Lin

2023

2022 Workshop on Electronics Communication Engineering

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In this paper, a simple dual-band polarization conversion metasurface(PCM) is proposed. This polarization conversion metasurface can be used in 5G applications such as satellites and radar. The polarization conversion is achieved by etching trapezoidal slots on the upper surface of the metasurface unit, resulting in a change in the distribution of the surface current. To achieve a dual-band, an additional resonant frequency is excited by loading two metal vias and two slots on either side of the metal via. In addition, the tuning of the frequency and the control of the operating bandwidth can be achieved by changing the radius size of the meta via and the slot width of the metasurface unit. The simulation results show that the line polarization(LP) conversion to line polarization(LP) is achieved at 37.6~59.5 GHz and 63~75.6 GHz with the average polarization conversion ratio of 94% and 96% in the two bands, respectively, and the lowest polarization conversion ratio of 90%.

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Effect of Polarization on the Performance of Adaptive Antenna Arrays

Cited by 19 publications

References 11 publications

Archives of Electrical Engineering

Archives of Electrical Engineering

Generalized monopulse angle measurement for conformal antenna arrays

A frequency-tunable dual-band polarization conversion metasurface

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