Mutual coupling analyses for small GPS adaptive arrays

Ngai, E.C.; Blejer, D.J.

doi:10.1109/aps.2001.959395

Cited by 12 publications

(5 citation statements)

References 1 publication

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“…Measurements are usually performed in anechoic chambers with high degree of automatization, and phase compensations are performed in the digital domain with methods ranging from look-up tables to advanced adaptive algorithms acting as a preprocessor of the beamformer [81], [93]- [95]. Mutual coupling among elements was considered in, for instance, [96], [97]. A calibration strategy for STAP beamformers and an operational prototype was reported in [98].…”

Section: B Calibrationmentioning

confidence: 99%

Robust GNSS Receivers by Array Signal Processing: Theory and Implementation

Fernández‐Prades¹,

Arribas²,

Closas³

2016

Proc. IEEE

104

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One of the main vulnerabilities of GNSS receivers is their exposure to intentional or unintentional jamming signals, which could even cause service unavailability. Several alternatives to counteract these effects were proposed in the literature, being the most promising those based on multiple antenna architectures. This is specially the case for high-grade receivers used in applications requiring reliability and robustness. This article provides an overview of the possible receiver architectures encompassing antenna arrays and the associated signal processing techniques. Emphasis is also put on the most typical implementation issues found when dealing with such technology. A thorough survey is complemented with a set of experiments, including real data processing by a working prototype, which exemplifies the above ideas.

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Section: B Calibrationmentioning

confidence: 99%

Robust GNSS Receivers by Array Signal Processing: Theory and Implementation

Fernández‐Prades¹,

Arribas²,

Closas³

2016

Proc. IEEE

104

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“…Practically, the coupling mechanisms depend on several factors such as permittivity and thickness of substrate material, ground plane size, type of excited modes etc. [3]. In generally, physical distance between the antenna elements is maintained half an operating wave length to reduce mutual coupling [4].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Electromangnetic Band Gap Structure for Mutual Coupling Reduction in Antenna Arrays-A Comparative Study

Kumar¹,

Khan²

2018

IJET

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In this paper, two new three layer (stacked) Electromagnetic Band Gap structures are proposed, named as Stacked Electromagnetic Band Gap (SEBG) and Progressive Stack Electromagnetic Band Gap (PSEBG) structures. Its electromagnetic (EM) properties are determined by using Finite element method (FEM) based simulator and obtained results are compared with classical mushroom type electromagnetic band gap (MEBG) structure. Both SEBG and PSEBG structures proposed in this paper consists of two layers above the conducting ground plane; a lower layer, contains array of small MEBGs with square patches and an upper layer contains square planar MEBG structure. Vertical conducting stubs passing through substrate shorting all square patches in both the layers with conducting ground. Three EBG structures are exhibiting the property of forbidden band gap (FBG), where surface wave propagation is restricted. The FBG property helps in minimization of mutual coupling between array antennas when electromagnetic band gap structures are incorporated between array elements. In this paper, the level of coefficient of mutual coupling between array antenna in the presence of SEBG and PSEBG are investigated, obtained results are compared with classical MEBG results. The co-efficient of mutual coupling is reduced up to 12dB in the presence of proposed models.

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“…In Controlled Reception Pattern Antenna (CRPA) applications, the antenna generally consists of an array of a few elements separated by a physical distance of about half a free space wavelength [1]. Therefore, mutual couplings between the elements of the array are generally strong and degrade the antenna and overall system performances [2]. Numerous strategies can be used to reduce mutual coupling in an array such as: corrugations [3], Split Ring Resonators (SRR) [4], Defected Ground Structures (DGS) [5] and mushroom like High Impedance Surface (HIS) [6].…”

Section: Introductionmentioning

confidence: 99%

HIS-like resonator for mutual coupling reduction in compact arrays

Capet

Martel

Sokoloff

et al. 2012

2012 15 International Symposium on Antenna Technology and Applied Electromagnetics

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In this article, HIS-like resonators are proposed for mutual coupling reduction between the elements of a small array. First, a methodology is proposed for the design of HIS-like resonators. Then, a reference array made of two cavity backed patches working in L-band is designed. HIS-like resonators are then introduced in the array in order to reduce couplings between the patches in E-plane configuration. These two arrays are then manufactured with modular parts, providing the possibility to replace the patches and tune the HIS-like resonators resonant frequency. Simulated and measured S-parameters are illustrated, showing the capability of these structures to reduce significantly mutual couplings.

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Mutual coupling analyses for small GPS adaptive arrays

Cited by 12 publications

References 1 publication

Robust GNSS Receivers by Array Signal Processing: Theory and Implementation

Robust GNSS Receivers by Array Signal Processing: Theory and Implementation

Optimization of Electromangnetic Band Gap Structure for Mutual Coupling Reduction in Antenna Arrays-A Comparative Study

HIS-like resonator for mutual coupling reduction in compact arrays

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