Low-Profile Broadband Metasurface Antenna Under Multimode Resonance

Liu, Sihao; Yang, Dan; Chen, Yongpin; Zhang, Xiaokun

doi:10.1109/lawp.2021.3094302

Cited by 46 publications

(37 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The parameters of the unit cell are extracted from the scattering parameters using the following expressions. The impedance 'z ′ is obtained from the S parameters using Equation (1).…”

Section: Metamaterials Unit Cellmentioning

confidence: 99%

“…Metasurfaces are formed by planar metamaterial unit cell arrays which can alter electromagnetic waves. Conventional metasurfaces are used in a variety of applications [1][2][3][4][5]. Nonperiodic metasurfaces are used in the design of broad band antennas [1].…”

Section: Introductionmentioning

confidence: 99%

“…Conventional metasurfaces are used in a variety of applications [1][2][3][4][5]. Nonperiodic metasurfaces are used in the design of broad band antennas [1]. Broad band RCS reduction is achieved with non-resonant metasurfaces [2].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Switchable Active Metasurface for Dual Band Gain Enhancement

Shaji¹,

Pradeep²

2022

PIER M

View full text Add to dashboard Cite

A novel active metasurface which is switchable to accomplish dual band gain enhancement is reported. The metasurface is used as a superstrate above the dual band patch antenna working at 2.4 GHz and 4.6 GHz. The gain of the antenna is enhanced by 3.5 dB at both frequencies. Switching between the frequencies is enabled by a p-i-n diode. When the p-i-n diode is in the OFF state, gain is enhanced at 2.4 GHz, while gain is reduced at 4.6 GHz. When the p-i-n diode is in the ON state, gain is enhanced at 4.6 GHz, but reduced at 2.4 GHz. The diode is controlled by biasing with a regulated DC source. The efficiency of the antenna is 70% at 2.4 GHz and 85% at 4.6 GHz. The simulated and measured results show good agreement. The distance between the antenna and the superstrate is 6 mm, which is 0.048λ at 2.4 GHz and 0.092λ at 4.6 GHz. This superstrate can be used in WLAN and Sub-6 GHz 5G applications.

show abstract

“…The parameters of the unit cell are extracted from the scattering parameters using the following expressions. The impedance 'z ′ is obtained from the S parameters using Equation (1).…”

Section: Metamaterials Unit Cellmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Switchable Active Metasurface for Dual Band Gain Enhancement

Shaji¹,

Pradeep²

2022

PIER M

View full text Add to dashboard Cite

show abstract

“…Metamaterials with unique properties of manipulating electromagnetic waves have provided an effective solution to improving the operation bandwidth [ 12 , 13 , 14 ]. Several metasurface-based antennas have been proposed for the low-profile and wideband operation [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. Grid-slotted periodic or quasi-periodic radiating patches inspired by metasurfaces have been demonstrated to achieve a large bandwidth (>30%) and a profile of approximately 0.05 λ 0 , with two adjacent TM resonant modes (TM10 and antiphase TM20) simultaneously excited [ 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…With the aid of the characteristic mode analysis (CMA) [ 25 , 26 , 27 , 28 ], the operating mechanisms of the antenna are provided and can guide the optimization of the metasurface [ 29 , 30 , 31 , 32 , 33 ]. In [ 30 ], the center patch, the corner patches and the edge patches are accordingly scaled, split and modified, respectively, to optimize the modal current distribution and radiation patterns.…”

Section: Introductionmentioning

confidence: 99%

A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication Applications

et al. 2023

View full text Add to dashboard Cite

A single-layer multimode metasurface antenna is proposed with a coplanar waveguide (CPW)-fed aperture. The ultra-wideband (UWB) performance is implemented based on a three-step evolution process with the aid of characteristic mode analysis (CMA). Considering the efficient excitation with a fixed feeding structure, the metasurface modal current variation at different frequencies is analyzed and optimized, in addition to that at the resonant frequency. Correspondingly, the metasurface is firstly designed utilizing an array of 4 × 4 patches. Then, the 1 × 3 and the 1 × 1 parasitic patch arrays are located near the edge patches. Finally, every patch is split into two by a center slot along the current distribution of the required polarization. Four resonant modes of the metasurface become more desirable step by step and can be efficiently excited over the entire band. To enhance the impedance matching level, a pair of 5-stage gradient transitions are added to the CPW-fed slot. The slot mode combined with the four modes further improves the bandwidth. The experimental results demonstrate that the proposed antenna exhibits a 3 dB gain bandwidth of over 74% (4.0–8.7 GHz) with a peak gain of 8.2 dBi. The overall dimensions of the prototype are 1.40λ0 × 1.40λ0 × 0.075λ0 (λ0 is the free-space wavelength at 6 GHz).

show abstract

An ultra‐wideband high gain antenna with embedded sleeves and hexagonal cavity

Zhang

Liao

et al. 2023

Micro & Optical Tech Letters

View full text Add to dashboard Cite

Radar detection and imaging systems need ultra-wideband, high-gain antennas to improve depth resolution and detection range. This paper proposes an ultra-wideband high gain differential patch antenna having a peak gain of 12.9 dBi and an average gain of 11.3 dBi in the bandwidth from 7.2 and 26 GHz. Two sleeves are added around the feeding probes to attain ultrawideband impedance matching that is explained with an equivalent circuit. A hexagonal cavity with two M-shaped cutouts improves the gain in the broadside direction by redistributing the current and reshaping the antenna's radiation patterns at different frequencies. The antenna's measured S-parameter validates the design and confirms it has an ultra-wide bandwidth.The ultra-wide bandwidth along with the high gain values make the antenna a promising candidate for high-resolution radar systems.

show abstract

Low-Profile Broadband Metasurface Antenna Under Multimode Resonance

Cited by 46 publications

References 26 publications

Switchable Active Metasurface for Dual Band Gain Enhancement

Switchable Active Metasurface for Dual Band Gain Enhancement

A Single-Layer Multimode Metasurface Antenna with a CPW-Fed Aperture for UWB Communication Applications

An ultra‐wideband high gain antenna with embedded sleeves and hexagonal cavity

Contact Info

Product

Resources

About