A modified decoupling scheme for receiving antenna arrays with application to DOA estimation

Parhizgar, Naser; Alighanbari, Abbas; Masnadi-Shirazi, Mohammad Ali; Sheikhi, A.

doi:10.1002/mmce.20671

Cited by 7 publications

(20 citation statements)

References 15 publications

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“…However, in the eq. the effect of terminal current,

I_{k}

is totally ignored in

W_{k}

formulation and no self impedance terms are considered . As a result, eq.…”

Section: New Methodsmentioning

confidence: 99%

“…In the new method, extreme care has been taken into account for both self impedance and mutual impedance, relating to the mutual coupling effects. As shown in , these newly calculated MIM can more efficiently eliminate the mutual coupling effects in a ULA with application to DOA estimation.…”

Section: Introductionmentioning

confidence: 94%

“…Mutual coupling effects disturb both the depth and accuracy of the location of the nulls. The performance of an adaptive antenna array is considerably affected by the mutual coupling effects between antenna elements. Many researches have been carried out to mitigate or compensate these unwanted effects.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adaptive nulling of a linear dipole array in the presence of mutual coupling

Parhizgar

Masnadi-Shirazi

Alighanbari

et al. 2013

Int J RF and Microwave Comp Aid Eng

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This article proposes a novel mutual impedance matrix model for compensating mutual coupling effects in adaptive array with application to adaptive nulling of interference signals. In the new method, extreme care has been taken into account for both self impedance and mutual impedance, relating to the mutual coupling effects. Numerical simulation results demonstrate the robustness and capability of this technique. By using the new method, it is found that both the accuracy of the positioning and depth of the nulls are significantly improved. Performance comparisons of the new methodology and several other previous techniques via a number of simulation are presented. V C 2013 Wiley Periodicals, Inc.Int J RF and Microwave CAE 24:30-38, 2014.

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“…However, in the eq. the effect of terminal current,

I_{k}

is totally ignored in

W_{k}

formulation and no self impedance terms are considered . As a result, eq.…”

Section: New Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

See 1 more Smart Citation

Adaptive nulling of a linear dipole array in the presence of mutual coupling

Parhizgar

Masnadi-Shirazi

Alighanbari

et al. 2013

Int J RF and Microwave Comp Aid Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…Techniques to decrease DOA estimation error such as compensation of mutual coupling and various post‐processing schemes have received sufficient research attention. A method to improve performance of DOA estimation algorithms by decoupling terminal voltages is presented in . The developed method is numerically validated assuming linear antenna array, high signal‐to‐noise ratio (SNR) and large number of snapshots.…”

Section: Related Workmentioning

confidence: 99%

A cascade‐connected neural model for improved 2D DOA estimation of an EM signal

Stoilkovic¹,

Stankovic

Milovanović

2015

Int J Numerical Modelling

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SUMMARYThis article proposes a neural network-based approach to increase accuracy of two-dimensional direction of arrival (DOA) estimation of an electromagnetic signal. The proposed method combines two neural networks developed using simulated and small amount of empirical data, respectively. The output of the simulation-based neural network represents approximate information on DOAs. It is then considered as a priori knowledge for the small empirical network that is crucial for obtaining more accurate DOA estimates. The developed cascade-connected model is validated using real data from a rectangular antenna array. Improvements in terms of accuracy and reliability are obtained and compared with the MUSIC algorithm.

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“…In Reference a dual‐polarized X‐band conformal array antenna is presented for unmanned aerial vehicles with polarimetry radars/sensors. Reference aims to present a novel DOA estimation strategy for smart antenna in multipath environment and Reference investigates the impact of the mutual coupling of the antenna array in the DOA performance.…”

Section: Introductionmentioning

confidence: 99%

Near optimal conformal antenna array structure for direction‐of‐arrival estimation

Sharifi

Rezaei

2019

Int J RF Microw Comput Aided Eng

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This article determines the near optimal conformal antenna array structure for direction‐of‐arrival (DOA) estimation through a comprehensive study on the planar and usual conformal antenna arrays including the cylindrical and hemispherical by using the directive antenna elements in all designs. To model the hemispherical structure, an improved multi‐face antenna array with three different tilts is proposed and compared with previous works in order to investigate the tilt effect and obtain the conclusive results. The Cramer‐Rao lower bound, multiple signal classification, and root‐mean‐square error algorithms are utilized to evaluate the estimation accuracy of all conformal structures. Finally, by comparing the estimation precision of all conformal structures it is shown that the purposed multi‐face structure as the hemispherical model has a better performance than other conformal structures in terms of the maximum angular coverage of the spatial resource. Moreover, the proposed study method in this article fully examines the impacts of the different conformal antennas geometric structure on the DOA estimation performance by involving the directive antennas radiation patterns.

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A modified decoupling scheme for receiving antenna arrays with application to DOA estimation

Cited by 7 publications

References 15 publications

Adaptive nulling of a linear dipole array in the presence of mutual coupling

Adaptive nulling of a linear dipole array in the presence of mutual coupling

A cascade‐connected neural model for improved 2D DOA estimation of an EM signal

Near optimal conformal antenna array structure for direction‐of‐arrival estimation

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