Dual‐band platform‐mounted HF/VHF antenna design using the characteristic mode theory

Li, Mingjian; Behdad, Nader

doi:10.1049/iet-map.2017.0612

Cited by 12 publications

(5 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a special issue on the theory and applications of characteristic modes published recently [4], a trend of fast-growing interest in the field has been reported. Up-to-date publications, see for example [5]- [11], support this trend. It was proven in [12] for the first time that for properly designed MM antennas the correlation is low enough to yield significant diversity gain when the MM antenna is used for MIMO transmission.…”

Section: Introductionmentioning

confidence: 80%

“…Therefore a finite number of coefficients U is sufficient to allow an accurate representation of the antenna pattern. In (11) spatial sampling is defined as a linear operation. The sampling matrix H can thus be found by least squares Once H is found, the interpolation can be performed by (11).…”

Section: B Wm-based Modelmentioning

confidence: 99%

“…In (11) spatial sampling is defined as a linear operation. The sampling matrix H can thus be found by least squares Once H is found, the interpolation can be performed by (11).…”

Section: B Wm-based Modelmentioning

confidence: 99%

See 2 more Smart Citations

Modeling Aspects of Planar Multi-Mode Antennas for Direction-of-Arrival Estimation

et al. 2019

View full text Add to dashboard Cite

Multi-mode antennas are an alternative to classical antenna arrays, and hence a promising emerging sensor technology for a vast variety of applications in the areas of array signal processing and digital communications. An unsolved problem is to describe the radiation pattern of multi-mode antennas in closed analytic form based on calibration measurements or on electromagnetic field (EMF) simulation data. As a solution, we investigate two modeling methods: One is based on the array interpolation technique (AIT), the other one on wavefield modeling (WM). Both methods are able to accurately interpolate quantized EMF data of a given multi-mode antenna, in our case a planar four-port antenna developed for the 6-8.5 GHz range. Since the modeling methods inherently depend on parameter sets, we investigate the influence of the parameter choice on the accuracy of both models. Furthermore, we evaluate the impact of modeling errors for coherent maximum-likelihood directionof-arrival (DoA) estimation given different model parameters. Numerical results are presented for a single polarization component. Simulations reveal that the estimation bias introduced by model errors is subject to the chosen model parameters. Finally, we provide optimized sets of AIT and WM parameters for the multi-mode antenna under investigation. With these parameter sets, EMF data samples can be reproduced in interpolated form with high angular resolution.

show abstract

Section: Introductionmentioning

confidence: 80%

Section: B Wm-based Modelmentioning

confidence: 99%

See 1 more Smart Citation

Modeling Aspects of Planar Multi-Mode Antennas for Direction-of-Arrival Estimation

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The inspiration comes from the technology of mobile phones which use the chassis of a printed circuit board (PCB) as the main radiating element [7], [8]. Similarly, the authors use the vehicle body as the main radiator in [9], [10]. To the best of our knowledge, the use of the rocket body as a radiator has not been conducted.…”

Section: Introductionmentioning

confidence: 99%

Excitation of a Conducting Cylinder Using the Theory of Characteristic Modes

Pascawati¹,

Hazdra²,

Lonsky³

et al. 2018

RADIOENGINEERING

View full text Add to dashboard Cite

This paper describes the application of the theory of characteristic modes to excite a conducting cylinder representing the chassis of a rocket. Mode excitation is achieved by cutting H-shaped slots on the cylinder at specific locations where the maximum of modal current distribution occurs. The L-matching network is designed to match the impedance of the slots to the input coaxial cable. Finally, the proposed concept is verified during manufacturing and measurement. It is shown that the measured results are in excellent agreement with the simulation.

show abstract

“…Specifically, Li and Behdad achieved an impedance bandwidth of 1.4% for a voltage standing wave ratio (VSWR) better than 2.25:1 in the HF band [18], while Ren et al realized greater than 24 kHz bandwidth in HF antennas designed for near vertical incidence skywave (NVIS) applications [19].…”

Section: State-of-the-art In Hf Antennasmentioning

confidence: 99%

Ultracompact and conformal magnetodielectric antennas

View full text Add to dashboard Cite

Novel approaches are needed for improving antenna performance, enhancing efficiency, and reducing the size, profile, number, and signature of antennas. Efficient conformal antennas are increasingly replacing traditional antennas across platforms such as ships, aircraft, and human interfaces. Magnetodielectric antennas made with high-hesistivity magnetic materials are getting more and more attention. Defined as the maximum magnetic conductivity, hesitivity is directly related to the radiation efficiency of magnetodielectric antennas, with a higher hesitivity corresponding to higher attainable efficiency. In this study, new ultra-compact conformal magnetodielectric antennas are demonstrated, employing commercially available ferrite ceramic substrates. Through rigorous simulation and fabrication, a comprehensive comparison of our magnetodielectric antennas with reference monopole antennas demonstrated superior efficiency, enhanced gain, bandwidth, and a substantial reduction in antenna size compared to monopole antennas. Validation of the antenna miniaturization was carried out by comparing with a new wood slabs core antenna. This study also includes an exploration of the Chu-Harrington limit, indicating the potential of magnetodielectric antennas. Further exploration of the new Magnetodielectric Antenna design was undertaken, but its performance was constrained by antenna efficiency and environmental noise. This study forecasts the potential development of new magnetic materials with higher hesitivity, leading to further advancements in magnetodielectric antennas with enhanced radiation efficiency.

show abstract

Dual‐band platform‐mounted HF/VHF antenna design using the characteristic mode theory

Cited by 12 publications

References 36 publications

Modeling Aspects of Planar Multi-Mode Antennas for Direction-of-Arrival Estimation

Modeling Aspects of Planar Multi-Mode Antennas for Direction-of-Arrival Estimation

Excitation of a Conducting Cylinder Using the Theory of Characteristic Modes

Ultracompact and conformal magnetodielectric antennas

Contact Info

Product

Resources

About