New approximation technique for current distribution in microstrip array antennas

Heinstadt, J.

doi:10.1049/el:19931203

Cited by 13 publications

(3 citation statements)

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“…The third category consists of modular approaches in which subsections of a structure are characterized by a small number of aggregate functions [19]- [27]. These functions correspond to the responses of the subsections, generally in isolation, for several chosen excitation fields.…”

Section: Introductionmentioning

confidence: 99%

“…In this way, one of the main difficulties in finite-array analysis is overcome, namely describing the electromagnetic coupling between all elements combined with the often complex structure of the antenna elements itself. The approaches described in [19]- [27] differ mainly in the way the aggregate functions are generated. For example, in the diakoptics approach described in [20] each subsection is equipped with ports that are subsequently excited to generate aggregate functions on the subsection.…”

Section: Introductionmentioning

confidence: 99%

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An Eigencurrent Approach for the Analysis of Finite Antenna Arrays

Bekers

Eijndhoven

Tijhuis

2009

IEEE Trans. Antennas Propagat.

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An accurate description of typical finite-array behavior such as edge effects and array resonances is essential in the design of various types of antennas. The analysis approach proposed in this paper is essentially based on the concept of eigencurrents and is capable of describing finite-array behavior. In the approach numerical simulation is carried out, first, by computing element eigencurrents from chosen expansion functions and, second, by expanding a limited set of array eigencurrents in terms of element eigencurrents that contribute to the mutual coupling in the array. Both types of eigencurrents are eigenfunctions of an impedance operator that relates the current to the excitation field. Highlighting both mathematical and physical features we describe the basic concepts of the approach, in particular the relation between eigenvalues and mutual coupling. We illustrate these features for uniform linear arrays of loops and dipoles, and demonstrate that the approach provides significant improvements in terms of computation time and memory use.Index Terms-Antenna arrays, dipole arrays, eigenvalues and eigenfunctions, integrodifferential equations, loop antenna arrays, method of moments (MoM), mutual coupling, resonance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Eigencurrent Approach for the Analysis of Finite Antenna Arrays

Bekers

Eijndhoven

Tijhuis

2009

IEEE Trans. Antennas Propagat.

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“…An additional advantage of using these macro basis functions is that existing codes can be reused with only minor modifications. These types of macro functions are sometimes referred to as aggregated basis functions, and have been applied to arrays of disconnected patch antennas in [47] and [15].…”

Section: Recent Advances In Computational Electromagnetics (Cem) Havementioning

confidence: 99%