Millimeter Wave Cavity Backed Microstrip Antenna Array for 79 GHZ Radar Applications

Mosalanejad, Mohammad; Brebels, S.; Soens, Charlotte; Ocket, Ilja; Vandenbosch, and Guy

doi:10.2528/pier17010407

Cited by 9 publications

(4 citation statements)

References 19 publications

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“…Optimal tuning of large antenna arrays is an important parameter in modern communication applications such as MIMO in the fifth generation [1], radar [2], satellite [3], and many other scenario applications. Some of these applications require a configurable beam pattern such as a narrow directive beam of the radiated power to meet the required coverage requirements.…”

Section: Introductionmentioning

confidence: 99%

Different 2D and 3D mask constraints synthesis for large array pattern shaping

Abdulqader

2023

Int. J. Microw. Wireless Technol.

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In this article, different 2D and 3D mask styles for synthesizing large array pattern shaping to meet the requirements of modern applications are realized. The composition of the different beam pattern shaping is achieved by comparing the array factor with the proposed masks whose details (upper and lower borders) are predefined according to the designer. The generated pattern shapes are as follows: unscanned 2D single-pencil beam, scanned 2D pencil beam, 2D multi-beam scanning, 2D wide flat beam with little ripple, unscanned 3D single-pencil beam, 3D multi-beam scanning, and footprint (or contour) pattern for linear and planar arrays. The process of constructing these patterns is followed by predicting the amplitude-only weights (i.e., the phase weighting is considered zero in all computations) of the elements using the particle swarm optimization algorithm. In all proposed masks, different sidelobe levels are controlled, ranging from −20 to −100 dB. Also, the radiated beamwidth is controlled, ranging from 0.1334 rad (7.6 deg.) to 0.4 rad (23 deg.). The analysis and construction of linear and planar array arrangements depend on the formulation of antenna array theory through the implementation of the proposed (estimated) equations using MATLAB code. The simulation results showed the effectiveness of the proposed methods in controlling the pattern shape according to the required modern trends.

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Section: Introductionmentioning

confidence: 99%

Different 2D and 3D mask constraints synthesis for large array pattern shaping

Abdulqader

2023

Int. J. Microw. Wireless Technol.

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“…intensity, uniformity, sidelobes levels. This problem is relevant in a wide range of applications, including antenna synthesis for radar and communications [1], [2], energy replenishment [3], [4], through-the-wall imaging [5], and biomedical applications [6]- [8]. As far as these latter are concerned, field intensity shaping plays a key role in hyperthermia treatment planning, wherein one aims to increase the temperature inside a tumor by means of a proper antenna array applicator, while keeping under control the heating in the surrounding healthy tissues [6].…”

Section: Introductionmentioning

confidence: 99%

A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI Shimming

Zumbo

Isernia

Bevacqua

2022

IEEE Open J. Antennas Propag.

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The canonical problem of designing the complex excitations feeding an array such to ensure a desired field intensity distribution inside a given region of interest, while keeping it under control in some other regions, is addressed. To this end, an auxiliary physics inspired model for the induced total field is proposed, whose off-line analysis allows a simplified approach to understand the convenient and non-convenient field interferences between canonical solutions for the induced total field, that are zero order Bessel functions. Moreover, its analysis drastically reduces the computational burden associated to the multi-control points based approaches. The problem at hand plays a key role in many different applications, including radio communications, wireless power transfer as well as hyperthermia treatment planning, and in this paper attention is paid to radiofrequency shimming in Magnetic Resonance Imaging. In fact, the proposed model and tools are tailored to the challenging case of leveling of the magnetic field intensity within an MRI scanner and in case of a bidimensional realistic head phantom.

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“…The optimal synthesis of array antennas plays a key role in many fields of applied electromagnetics including satellite [1], radar [2], and cellular [3] telecommunications, as well as medical [4], electricalenergy [5] applications, and many further scenarios [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Amongst the different possible approaches to the problem, the ones guaranteeing the best exploitation of the available degrees of freedom (and hence the most effective use of the antenna resources) are those aiming at a 'mask-constrained' power synthesis.…”

Section: Introductionmentioning

confidence: 99%

Mask-Constrained Power Synthesis of Large and Arbitrary Arraysas a Few-Samples Global Optimization

Battaglia¹,

Morabito²,

Sorbello³

et al. 2020

PIER C

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With reference to the mask-constrained power synthesis of shaped beams through fixedgeometry antenna arrays, we elaborate a recently proposed approach and introduce an innovative effective technique. In particular, the proposed formulation, which can take into account mutual coupling and mounting platform effects, relies on a nested optimization where the external global optimization acts on the field's phase shifts over a minimal number of 'control points' located into the target region whereas the internal optimization acts instead on excitations. As the internal optimization of the ripple is shown to result in a Convex Programming problem and the external optimization deals with a reduced number of unknowns, a full control of the shaped beam's ripple and sidelobe level is achieved even in the case of arrays having a large size and aimed at generating large-footprint patterns. Examples involving comparisons with benchmark approaches as well as full-wave simulated realistic antennas are provided.

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Millimeter Wave Cavity Backed Microstrip Antenna Array for 79 GHZ Radar Applications

Cited by 9 publications

References 19 publications

Different 2D and 3D mask constraints synthesis for large array pattern shaping

Different 2D and 3D mask constraints synthesis for large array pattern shaping

A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI Shimming

Mask-Constrained Power Synthesis of Large and Arbitrary Arraysas a Few-Samples Global Optimization

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