نتایج جستجو برای: mutual coupling effects
تعداد نتایج: 1714771 فیلتر نتایج به سال:
Tills paper presents a study of mutual coupling between Lil'cu!ur!y polarised electromagnesicolty coupled pa/dl (CP-EMCI') antennas. Two types 0/ antennas having different high dielectric constants driven laver have been addressed. In addition 10 compariSO/l of mllillil! coupling !>e/ween CP-EMCP antennas. comparisons have been made 10 three references. one 0/ which is the recently reported mut...
Abstract—This paper presents a numerical simulation of the human head coupling with a Planar Inverted-F Antenna (PIFA) structure based on the Coupled Integral Equation/Method of Moment (CIE/MoM) approach to study the effects of the EM coupling on the antenna performance. A mix-potential integral equation (MPIE) for the surface current of PIFA structure and a volume electric field integral equat...
MIMO wireless systems employing antenna arrays with close inter-element spacings exhibit a high degree of mutual coupling. In this case, the channel transfer matrix is a function of the matching network employed at transmit and receive. Existing capacity expressions are inappropriate, since the maximum mutual information will depend on antenna element loading. This paper develops a new expressi...
We analyze reflexive photorefractive coupling of an information-bearing beam carrying several distinct spatiotemporal features, with emphasis on the coupling-induced change in the mutual spatial coherence. We formulate equations describing evolution of the mutual correlation functions between different features and discuss their solutions both in the full two-dimensional case and in the limit l...
This thesis presents research on methods for calculating the mutual coupling between antennas. The mutual coupling between antennas is a measure of the amount of energy transmitted from one antenna that is received by another, and is a key parameter when installing antennas on platforms, such as aircraft. To avoid interference between systems connected to the antennas, the mutual coupling shoul...
We use a neural mass model to address some important issues in characterising functional integration among remote cortical areas using magnetoencephalography or electroencephalography (MEG or EEG). In a previous paper [Neuroimage (in press)], we showed how the coupling among cortical areas can modulate the MEG or EEG spectrum and synchronise oscillatory dynamics. In this work, we exploit the mo...
In this paper, we derive an upper bound on the channel capacity of MIMO systems in the presence of correlated noise. We isolate the noise correlation factor in the channel capacity formula, enabling the identification of the noise correlation contribution on the MIMO channel capacity. We analyze the thermal noise correlation due to the mutual coupling effect. Then, we calculate the thermal nois...
This paper proposes a new modal analysis based on Floquet’s theorem which is needful for the study of a 1-D periodic phased array antenna excited by arbitrary located sources. This analysis requires an accurate estimation for calculation of the mutual coupling parameters (for example: mutual impedances or admittances . . . ) between the array elements and their effects integrating a large plana...
In array processing, mutual coupling between sensors has an adverse effect on the estimation of parameters (e.g., DOA). While there are methods to counteract this through appropriate modeling and calibration, they are usually computationally expensive, and sensitive to model mismatch. On the other hand, sparse arrays, such as nested arrays, coprime arrays, and minimum redundancy arrays (MRAs), ...
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