A theoretical and experimental study of mutual coupling in microstrip antenna arrays

Mohammadian, A.H.; Martin, Nivetha; Griffin, D.W.

doi:10.1109/8.43529

Cited by 53 publications

(23 citation statements)

References 13 publications

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“…The magnitude of the calculated coupling shows good agreement with the measured value using a network analyser, since the element's separation is greater than 0´1 l 0 (Mohammadian et al 1989). …”

Section: Array Design and Mutual Coupling Calculationssupporting

confidence: 61%

Using microwave holography and microstrip antenna for 3D mouse investigation

Elsadek¹,

Eldeib²,

Ueda³

et al. 1996

International Journal of Electronics

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A dynamic technique for establishing a three dimensional (3D) mouse is possible by combining holography with a microstrip antenna in order to enter 3D data into a computer. The idea depends on two techniques, the first generates a point source hologram from a dipole antenna. Secondly a receiving microstrip antenna will be attached to operator's hand. A practical system for this purpose is constructed and performances are evaluated theoretically and tested experimentally. Scanning time is improved by replacing the antenna element with an array to achieve reasonable or real time results in editing 3D images. A simulation model is developed to create similar holograms. Experimental and simulation results give excellent agreement.

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Section: Array Design and Mutual Coupling Calculationssupporting

confidence: 61%

Using microwave holography and microstrip antenna for 3D mouse investigation

Elsadek¹,

Eldeib²,

Ueda³

et al. 1996

International Journal of Electronics

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“…As is illustrated in Fig. 15(a), when ports 1 and 3 are excited with the same phase, which is equivalent to the two patches being oriented in their E-planes [49], very strong induced currents appear on the GCLL surfaces. The currents densities are also in phase, indicating that the strong electric response [43,44] noted for the GCLL unit cell in Fig.…”

Section: Mutual Coupling Reduction Mechanismsmentioning

confidence: 99%

“…Additionally, it is noted that the GCLL's meander-line features also provide an extra degree of freedom to improve the |S13| (decoupling) levels even further. In contrast, when ports 2 and 4 are exited, the two-element behavior is switched into the orthogonal direction, which is now equivalent to the two patches being in an H-plane orientation [49]. As shown in Fig.…”

Section: Mutual Coupling Reduction Mechanismsmentioning

confidence: 99%

Mutual Coupling Reduction Using Meta-Structures for Wideband, Dual-Polarized, and High-Density Patch Arrays

Tang

Chen

Wang

et al. 2017

IEEE Trans. Antennas Propagat.

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-A mutual coupling reduction strategy that employs meta-structures is introduced for wideband, dual-polarized, high-density, planar, patch antenna arrays. The meta-structures consist of two types of resonators: grounded capacitively loaded loops (GCLLs) and π-shaped elements. By incorporating the meta-structures into the array configuration, the isolation levels between adjacent radiating elements in both the E-and H-plane orientations are improved by as much as 7.15 dB. The surface current distribution behaviors of the array with only the GCLLs and with only the π-shaped elements are investigated thoroughly to explain the mutual coupling reduction mechanisms. A proof-of-concept array was constructed and tests were performed that validate the reported design principles and simulation results. M. (5G) communication systems [1,2]. It has several unique advantages that arise from its ability to facilitate the presence of additional signal channels instead of requiring the use of extra frequency spectrum or power. Benefits include being able to increase the data capacity and to make the system more adaptable. Index TermsMIMO approaches are based on antenna arrays. With the ever increasing demand for more capacity, it is anticipated that massive MIMO will be central to 5G systems; and it will be facilitated by compact dense arrays. However, strong inter-element coupling occurs when the element spacing is small; it dramatically increases the spatial correlations and seriously deteriorates the signal-to-interference-plus-noise -ratio (SINR) [3]. Consequently, mutual coupling effects between array elements have attracted intense attention.There exist a plethora of reported approaches that are capable of reducing the mutual coupling in the physical layer. However, because of known fundamental physical limitations [4], it cannot be eliminated completely. Nevertheless, mutual coupling reduction can significantly improve the performance of MIMO systems.In general, the existing, most widely used mutual coupling reduction strategies can be classified into the following three categories. One approach focuses on introducing a variety of compact isolation elements between the radiators. The choices have been rather diverse. They include parasitic elements, such as monopoles [5], scatterers [6], and radiation patches [7]. Also, they include electromagnetic band-gap (EBG) structures, such as mushroom-like EBG structures [8], F-shaped EBG structures [9], and uniplanar compact EBG structures [10,11]. Defected ground structures (DGSs), such as periodic rectangular slits [12], back-to-back U-shaped slots [13], T-shaped slots [14], and loop slots [15] have also been used. More recently, numerous metamaterial-inspired structures have been considered, such as folded single split ring resonators [16], grounded split-ring resonators (GSRRs) [17], multiple split-ring resonators (MSRRs) [18] While the above strategies have reduced mutual coupling, one witnesses certain drawbacks accompanying each of them. As a result, their widespre...

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“…2 is the only one explaining mutual coupling exactly in a passive multiport. Thus, the same structure should be used also for the impedance matrix utilizing the dualism of electromagnetics with magnetic circuits [10][11][12][13].…”

Section: Resultsmentioning

confidence: 99%

Microstrip antenna circuit model and linear pattern correction

Salonen¹,

Icheln²,

Vainikainen³

2005

11th International Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2005]

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Abstract-Mutual coupling, among other effects, causes the element patterns in an antenna array to be different. In the practical adaptive use of the array identical element patterns are usually expected. Linear pattern correction with matrix multiplication can be used to correct the array element inputs/outputs. In this paper, a multiport model for a microstrip array and a method to find the input circuit for its ports is presented for use in the array correction.

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A theoretical and experimental study of mutual coupling in microstrip antenna arrays

Cited by 53 publications

References 13 publications

Using microwave holography and microstrip antenna for 3D mouse investigation

Using microwave holography and microstrip antenna for 3D mouse investigation

Mutual Coupling Reduction Using Meta-Structures for Wideband, Dual-Polarized, and High-Density Patch Arrays

Microstrip antenna circuit model and linear pattern correction

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