Inductive and capacitive excitation of the characteristic modes of small terminals

Martens, Robert; Safin, Eugen; Manteuffel, Dirk

doi:10.1109/lapc.2011.6114141

Cited by 158 publications

(105 citation statements)

References 10 publications

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“…It was shown earlier that the corner edges of the terminal chassis were found to be optimal for couplers to excite the first three characteristic modes [29]. Hence, all antenna elements are optimally located at one of the corner edges to gain fair insights into the excited current distribution on the terminal chassis at 3500 MHz.…”

Section: State-of-the-art Internal Antennasmentioning

confidence: 96%

Design and Measurement-Based Evaluation of Multi-Antenna Mobile Terminals for Lte 3500 MHZ Band

Al‐Hadi

Jamaly²,

Haneda³

et al. 2013

PIER B

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Abstract-Design of multi-element antennas (MA) for small mobile terminals operating at higher frequencies remains challenging despite smaller antenna dimension and possibility of achieving electrically large separation between them. In this paper, the importance of the type of radiating elements operating at 3400-3600 MHz and their locations on the terminal chassis is highlighted. An isotropic radiation pattern that receives incoming signals from arbitrary directions is obtained by combining the radiation patterns of multiple antennas with localized chassis current distribution. Four MA configurations with two-and eight-element antennas are designed and evaluated experimentally in indoor propagation environments. Our proposed designs of MAs provide the highest MIMO channel capacity compared to their counterparts using antennas with less localized chassis current distribution, even in the presence of user's hand.

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Section: State-of-the-art Internal Antennasmentioning

confidence: 96%

Design and Measurement-Based Evaluation of Multi-Antenna Mobile Terminals for Lte 3500 MHZ Band

Al‐Hadi

Jamaly²,

Haneda³

et al. 2013

PIER B

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“…In general, either inductive or capacitive coupling mechanisms can be used to excite CM, as it has been proposed for mobile terminals [36] [37]. Inductive feeding will effectively excite those modes whose electric current distribution shows intense currents at the location of the source.…”

Section: A Excitation Of Characteristic Modes By Using Different Coumentioning

confidence: 99%

Design Guidelines for the Excitation of Characteristic Modes in Slotted Planar Structures

Antonino‐Daviu

Cabedo-Fabrés

Sonkki

et al. 2016

IEEE Trans. Antennas Propagat.

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Abstract-This paper provides some design guidelines for the excitation of broadband slotted planar antennas, addressing key issues such as coupling, symmetries and multiple feeding. The Theory of Characteristic Modes is used to identify the collection of current modes that exists on these structures, dealing to a valuable understanding of the radiating mechanisms and allowing a more controlled design process. Modal analysis of a circular aperture cut on a finite square ground plane is presented in order to demonstrate that an optimum choice of the feeding mechanism can be made according to the current distribution of the desired modes. Based on the information yielded by this modal analysis, a capacitive-coupled dual-feed circular aperture antenna is presented. This antenna takes advantage of the symmetries of the characteristic currents by making use of multiple feeding, in order to excite only some particular modes. Usage of commonly-fed and differentially-fed configurations enables an increased control of the excitation of modes in the structure. Characteristic modes analysis of the antenna including the feeding structures is presented, showing the influence of the feeding lines in the performance of this type of antennas. A prototype of the antenna has been fabricated and measured. Simulated and measured results are presented, being in good agreement.

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“…Further, in [5], a practical coupling structural concept, the Booster, was introduced to use CMA in a MIMO antenna design. [6] proposed the coupling structure for the current correlation coupling to be an exciter.…”

Section: Introductionmentioning

confidence: 99%

Identifying the Appropriate Position on the Ground Plane for MIMO Antennas Using Characteristic Mode Analysis

Won

Jeon²,

Nam³

2016

Journal of electromagnetic engineering and science

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In this paper, a method for identifying the appropriate position on the ground plane for antennas is proposed based on the current correlation coefficient ( ). This method explains that the mutual coupling between antennas when locating several antennas on the same ground plane is necessary. Given the current distribution on the ground plane induced by each antenna, easily estimating the coupling between antennas is possible. This paper also demonstrates that the proposed method can be used in the design of a multi-input multioutput system. The measured data are in good agreement with the simulation results. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ⓒ

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Inductive and capacitive excitation of the characteristic modes of small terminals

Cited by 158 publications

References 10 publications

Design and Measurement-Based Evaluation of Multi-Antenna Mobile Terminals for Lte 3500 MHZ Band

Design and Measurement-Based Evaluation of Multi-Antenna Mobile Terminals for Lte 3500 MHZ Band

Design Guidelines for the Excitation of Characteristic Modes in Slotted Planar Structures

Identifying the Appropriate Position on the Ground Plane for MIMO Antennas Using Characteristic Mode Analysis

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