A Generalized Methodology for Obtaining Antenna Array Surface Current Distributions With Optimum Cross-Correlation Performance for MIMO and Spatial Diversity Applications

Clauzier, Sébastien; Mikki, Said; Antar, Yahia M. M.

doi:10.1109/lawp.2015.2411557

Cited by 30 publications

(6 citation statements)

References 4 publications

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“…Clearly, the steps in the FDTD-CGF-TD technique are not directly dependent on the desired frequency resolution, since no requirement of calculating CGF for all the frequencies is there. It can be observed that the effects of CGF have been embedded in the evaluation of integrals in ( 8) and (13). These integrals can be further reduced to discrete double-summation expressions, by considering small incremental angles ∆θ and ∆φ.…”

Section: Method-2 (Fdtd-cgf-td)mentioning

confidence: 99%

“…A Method-of-Moments based approach using CGF is shown in [12], for calculating ECC and diversity gain of thin-wire dipole antenna systems. Also genetic algorithm (GA) based techniques are formulated in [13]- [14], to predict the optimum antenna current distributions that can provide the best ECC and diversity performance. However, the procedures introduced in [12]- [15] are mainly targeted for evaluation of ECC of MIMO antenna systems at a single frequency.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of Cross-Correlation Greens Function Along With FDTD for Fast Computation of Envelope Correlation Coefficient Over Wideband for MIMO Antennas

Sarkar¹,

Srivastava²

2017

IEEE Trans. Antennas Propagat.

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In this work 1 , the concept of cross-correlation Green's functions (CGF) is used in conjunction with the finite difference time domain (FDTD) technique for calculation of envelope correlation coefficient (ECC) of any arbitrary MIMO antenna system over wide frequency band. Both frequency-domain (FD) and time-domain (TD) post-processing techniques are proposed for possible application with this FDTD-CGF scheme. The FDTD-CGF time-domain (FDTD-CGF-TD) scheme utilizes time-domain signal processing methods and exhibits significant reduction in ECC computation time as compared to the FDTD-CGF frequency domain (FDTD-CGF-FD) scheme, for high frequency-resolution requirements. The proposed FDTD-CGF based schemes can be applied for accurate and fast prediction of wideband ECC response, instead of the conventional scattering parameter based techniques which have several limitations. Numerical examples of the proposed FDTD-CGF techniques are provided for two-element MIMO systems involving thin-wire half-wavelength dipoles in parallel side-by-side as well as orthogonal arrangements. The results obtained from the FDTD-CGF techniques are compared with results from commercial electromagnetic solver Ansys HFSS, to verify the validity of proposed approach.

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Section: Method-2 (Fdtd-cgf-td)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of Cross-Correlation Greens Function Along With FDTD for Fast Computation of Envelope Correlation Coefficient Over Wideband for MIMO Antennas

Sarkar¹,

Srivastava²

2017

IEEE Trans. Antennas Propagat.

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“…Once the slot has been modeled by a magnetic current, the current itself can be discretized by replacing it by an array of magnetic infinitesimal dipole (MIDs) as will be explained next. The general method of the infinitesimal dipole model (IDM) has been used successfully in many applications, ranging from fundamental antenna modeling, 26 mutual coupling and antenna modeling, 27 near‐field focusing, 28 and MIMO antenna design 29 . In the present article, we propose applying the IDM method to develop a slot array design algorithm.…”

Section: The Slot Array Synthesis Algorithmmentioning

confidence: 99%

Slot antenna array synthesis using the infinitesimal dipole model technique: Theory and experiment

Mikki

Clauzier

Karimi

et al. 2020

Int J RF Microw Comput Aided Eng

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The present article proposes and validates a new general design methodology that can be used to automatically find proper positions and orientations of waveguidebased radiating slots capable of realizing any given radiation beam profile. The new technique combines basic radiation theory and waveguide propagation theory in an analytical model that permits the prediction of the radiation characteristics of generic slots without the need to perform full-wave numerical solution while completely avoiding using transmission-line models or the slot impedance method. The analytical model is then used to implement a low-cost objective function within a global optimization scheme and subsequently deployed to find optimum positions and orientations of clusters of radiating slots cut into the waveguide surface such that any desired beam pattern can be obtained, leading to very efficient and robust beamforming capability that can be applied to dynamic beamforming in real-time scenarios like MIMO systems. The proposed design method is verified using both full-wave numerical solution and experiment.

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“…Once the slot has been replaced by a magnetic current, the current itself can be discretized by replacing it by an array of magnetic infinitesimal dipole (MIDs). The infinitesimal dipole model method has been used successfully in many applications, ranging from mutual coupling and antenna modeling [8] to near-field focusing [9] and MIMO antenna design [10]. In the present paper we propose applying the method to develop a slot array design method.…”

Section: Validationmentioning

confidence: 99%

A new method for the design of slot antenna arrays: Theory and experiment

Clauzier

Mikki

Shamim

et al. 2016

2016 10th European Conference on Antennas and Propagation (EuCAP)

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Abstract-The present paper proposes and validates a new general design methodology that can be used to automatically find proper positions and orientations of waveguide-based radiating slots capable of realizing any given radiation beam profile. The new technique combines basic radiation theory and waveguide propagation theory in a novel analytical model that allows the prediction of the radiation characteristics of generic slots without the need to perform full-wave numerical solution. The analytical model is then used to implement a low-cost objective function within a global optimization scheme (here genetic algorithm.) The algorithm is then deployed to find optimum positions and orientations of clusters of radiating slots cut into the waveguide surface such that any desired beam pattern can be obtained. The method is verified using both fullwave numerical solution and experiment.

show abstract

A Generalized Methodology for Obtaining Antenna Array Surface Current Distributions With Optimum Cross-Correlation Performance for MIMO and Spatial Diversity Applications

Cited by 30 publications

References 4 publications

Application of Cross-Correlation Greens Function Along With FDTD for Fast Computation of Envelope Correlation Coefficient Over Wideband for MIMO Antennas

Application of Cross-Correlation Greens Function Along With FDTD for Fast Computation of Envelope Correlation Coefficient Over Wideband for MIMO Antennas

Slot antenna array synthesis using the infinitesimal dipole model technique: Theory and experiment

A new method for the design of slot antenna arrays: Theory and experiment

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