Computation of characteristic modes for conducting bodies

Harrington, Roger F.; Mautz, Joseph R.

doi:10.1109/tap.1971.1139990

Cited by 490 publications

(249 citation statements)

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“…An alternative to this analysis consists of using the theory of characteristic modes (TCM). This theory was initially formulated by Garbacz and Turpin [10] and then refined by Harrington and Mautz [11,12]. The TCM was shown to be really helpful for the analysis and design of several antenna structures [13].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Metamaterial Lens Antenna Using the Theory of Characteristic Modes

Santillan-Haro

Antonino‐Daviu

Sánchez‐Escuderos

et al. 2018

International Journal of Antennas and Propagation

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A new single-layer metamaterial lens antenna aimed to operate at 10 GHz is proposed in this paper. The lens antenna consists of twelve capacitively coupled unit cells distributed along a ring and illuminated by an open-ended circular waveguide with a metallic resonant ring. The theory of characteristic modes is used to analyze the metamaterial lens, in order to provide an insight into the radiation characteristics of the antenna. The proposed antenna has been optimized, obtaining a large bandwidth and a maximum directivity of 12.88 dBi at 10 GHz.

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Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Metamaterial Lens Antenna Using the Theory of Characteristic Modes

Santillan-Haro

Antonino‐Daviu

Sánchez‐Escuderos

et al. 2018

International Journal of Antennas and Propagation

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“…The magnitude of the eigenvalues λ n given in Equation (4) is related to the radiation of a mode which can be best analysed by the complex power balance yielded from orthogonal relationship between characteristic field and characteristic current ruled by the Poynting theorem in Equation (6). In general, the eigenvalues range from −∞ to +∞ with a mode being at resonance when it's associated eigenvalue is zero.…”

Section: Modal Analysis Of Simple Planar Monopole and Its Physical Inmentioning

confidence: 99%

“…A popular notion called the Characteristic Modes proposed by Garbacz corresponds with eigenvectors of a weighted eigenvalue equation and is the most common used techniques in modal analysis. With increased computational facilities and a simplified modal solution called the Theory of characteristics Modes (TCM) proposed by Harrington and Mautz in 1971, characteristic modes can be computed numerically for conducting bodies of any arbitrary shape [6]. In this communication, a systematic design approach based on the modal analysis for analysis of planar UWB monopole antenna for wireless USB dongle application is presented.…”

Section: Introductionmentioning

confidence: 99%

Planar Monopole Uwb Antenna for Usb Dongle Application

Labade¹,

Tambe²,

Deosarkar³

et al. 2015

PIER C

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Abstract-In this communication, a systematic approach for design of planar monopole ultra-wideband (UWB; 3.1 ∼ 10.6 GHz) antenna for wireless USB dongle has been proposed. The simple planar monopole antenna consists of a rectangular metallic radiating patch whose modal analysis is carried out first by means of the Theory of Characteristic Modes (TCM), in order to identify the different radiating modes and get the physical insights of these radiating modes of the antenna. Further, based on the physical evidences obtained from the radiating modes of the similar planar monopole antenna, a bevel transition feed with rectangular slot has been used to enhance the bandwidth and obtain the desired radiation characteristics of the proposed antenna. The modal analysis is carried out using characteristic modes (CM) analysis tool in CADFEKO 7.0 simulation software. The proposed antenna exhibits a very compact dimensions of 12 mm × 16 mm × 5 mm and yields a good insights in simulated and measured impedance bandwidth of 3.1 ∼ 12 GHz with VSWR < 2. Furthermore, the proposed antenna exhibits symmetrical radiation patterns, stable-high gain and efficiency and ultra-wide bandwidth making it suitable candidate for practical UWB-USB applications.

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“…It is well-known that entire-domain basis functions enable a very efficiently modeling of the currents. Nonetheless, the computation of a set of entire-domain basis functions it is only possible for certain canonical geometries [44,31,4] or via numerical techniques which involve solving the entire problem [19,18] with the corresponding computational cost.…”

Section: Introductionmentioning

confidence: 99%

“…Among the pioneering works on this field, we find the theory ofcharacteristic modes that has been carry out by Harrington [19,18]. This modes are computed by solving the following generalized eigenvalue problem:…”

Section: Introductionmentioning

confidence: 99%