Characteristic mode analysis of wideband high-gain and low-profile metasurface antenna*

Gao, Kun; Cao, Xiangyu; Gao, Jun; Yang, Huanhuan; Han, Jiangfeng

doi:10.1088/1674-1056/abdb23

Cited by 12 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[19][20][21][22][23] Characteristic mode analysis (CMA) is widely applied in the design of metasurface antennas. [24][25][26][27][28] It can effectively assist designers in analyzing the current distribution of metasurface metal units, the frequency range of modal significance (MS), and providing a theory for the design of wideband and reconfigurable antennas. The wideband low-profile horizontally polarized omnidirectional metasurface antenna proposed in Ref.…”

Section: Research On the Electromagnetic Characteristics Of Metasurfa...mentioning

confidence: 99%

Research on the electromagnetic characteristics of metasurfaces based on air dielectric substrates

Ni,

Li,

Zhang

2024

Journal of Applied Physics

View full text Add to dashboard Cite

Electromagnetic metasurfaces can achieve effective control of electromagnetic waves and achieve effects such as blocking, enhancing, reflecting, transmitting, or deflecting electromagnetic waves, possessing electromagnetic properties that go beyond traditional materials. Existing research indicates that the dielectric substrate of metasurfaces has a significant impact on their electromagnetic properties. Increasing the substrate thickness will be beneficial for expanding the impedance bandwidth of the metasurface, and changes in dielectric constant will also have some impact on the operating frequency and bandwidth of the metasurface. A metasurface based on an air substrate was proposed through the research of dielectric materials. In addition, an ultrawideband, miniaturized, and high-gain metasurface antenna based on an air substrate is designed. The overall size of the designed antenna is 0.5λL × 0.5λL (where λL represents the wavelength at the lowest working frequency in free space). The measured results indicate that the proposed antenna exhibits a −10 dB impedance bandwidth of 74.3% (2.53–5.52 GHz) and a peak boresight gain of 10.1 dBi.

show abstract

Section: Research On the Electromagnetic Characteristics Of Metasurfa...mentioning

confidence: 99%

Research on the electromagnetic characteristics of metasurfaces based on air dielectric substrates

Ni,

Li,

Zhang

2024

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…However, the lack of a universal equivalent circuit and the complexity of the extraction of equivalent circuit parameters hinder the different structural designs. The CMT was first proposed by Dr. Garbacz in 1965; it has successfully been adopted to guide numerous studies related to the design and optimization of antennas due to its clear and precise physical insights into the EM radiation modes and behaviors of metal conductor surfaces. − Recently, the CMT also significantly guides the EM absorption design of metamaterials as demonstrated by related research results. − …”

Section: Introductionmentioning

confidence: 99%

Novel Local-Chiral Metamaterial: Effective Modulation of Amplitude & Phase for Wideband Polarization-Insensitive Absorption

Liu,

Duan,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Metamaterial has received widespread research in the fields of electromagnetic stealth due to its characteristics of strong resonance and flexible designability. However, a lack of a comprehensive understanding of the internal physical mechanism still imposes certain limitations on broadband absorption designs. Hence, this work proposes a new strategy for the broadening of the working frequency band of metamaterial absorbers by constructing local-chiral features to regulate the amplitude and phase information. The absorber consists of staggered cut-wire metal patterns with lumped resistors placed at the center position determined by characteristic mode analysis. Combining the modal significance, equivalent circuit, surface current, electric field distribution, and symmetry model theory, the working mechanism for wideband absorption performance has been analyzed in detail. The experimental results are in good agreement with the simulation results; the absorption rate exceeds 82% in the frequency range of 4.5−11.7 GHz and surpasses about 90% in the frequency range of 4.7−10.8 GHz under transverse electric (TE) or transverse-magnetic (TM) polarizations. Compared to the case without chiral features, the proposed design can achieve a 28% increase in operating bandwidth. The proposed design method is applicable for the optimization of various typical dipole-type metamaterial absorbers and provides a novel strategy for future wideband metamaterial absorption.

show abstract

“…One of the good methods to improve the IBW of microstrip patch antennas is employment of metasurfaces (MTS) [4,5]. Many MTS-based methods are used to improve the bandwidth of patch antennas [6][7][8][9][10][11][12][13][14][15][16][17]. These techniques include designing of MTS using effective medium theory (ε-μ) [4,6], reflection/transmission coefficients (S ij ) [7,8], equivalent circuit model (R-L-C) [9], composite right/left-handed transmission lines [10], and surface impedance extraction [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…In the proposed design, characteristics 15, modes (CM) are excited to achieve wideband operation. The working bandwidth of the designed structure is 5.3-7.94 GHz with a peak gain of 10 dBi [17]. Recently, a miniaturized reconfigurable tri-polarization MTS antenna is proposed using CMA.…”

Section: Introductionmentioning

confidence: 99%

Design of low-profile high-gain wideband circularly polarized low RCS single-layer metasurface antenna using characteristics mode analysis

Rana

Jain

2023

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

In this paper, a novel circularly polarized (CP) high-gain low-profile single-layer metasurface (MTS) antenna fed by a coplanar waveguide is presented for wideband low radar cross-section (RCS) applications. Characteristics mode analysis (CMA) technique is employed to simultaneously excite the useful modes rather than using conventional technique to achieve circular polarization in the wideband. By analyzing the characteristics modes of the antenna, gain of the antenna is also improved. Experimental results verify good performance of the proposed antenna with a compact size of 0.67λ0 × 0.67λ0 × 0.040λ0. The measured results of the antenna exhibit UWB impedance bandwidth of 96.93% in the frequency range of 3.7–10.65 GHz and 3 dB axial ratio bandwidth of about 41.8% in the frequency range of 5.3–8.1 GHz. The antenna shows a good radiation pattern with a measured peak gain of 7.9 dBic at 7.97 GHz. The proposed antenna achieves out-of-band scattering suppression in the wide range of 10–24 GHz because of MTS structure with peak RCS reduction of 19 dB at 12 GHz. The proposed antenna can be used for c- and x-band applications.

show abstract

Characteristic mode analysis of wideband high-gain and low-profile metasurface antenna*

Cited by 12 publications

References 30 publications

Research on the electromagnetic characteristics of metasurfaces based on air dielectric substrates

Research on the electromagnetic characteristics of metasurfaces based on air dielectric substrates

Novel Local-Chiral Metamaterial: Effective Modulation of Amplitude & Phase for Wideband Polarization-Insensitive Absorption

Design of low-profile high-gain wideband circularly polarized low RCS single-layer metasurface antenna using characteristics mode analysis

Contact Info

Product

Resources

About