Journal ArticleDOI
Bandwidth and Gain Improvement of an L-Shaped Slot Antenna With Metamaterial Loading
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TLDR
In this article, a metamaterial-based wideband and high gain circularly polarized (CP) antenna is proposed and analyzed, which consists of a $4 \times 4$ mushroom-cells array and an L-shaped slot coupling-fed layer.Abstract:
A metamaterial-based wideband and high-gain circularly polarized (CP) mushroom antenna is proposed and analyzed in this letter. The proposed antenna consists of a $4 \times 4$ mushroom-cells array and an L-shaped slot coupling-fed layer. The metamaterial-based mushroom cells are adopted to adjust the axial ratio (AR) to realize wideband CP and high gain. With the optimization, the proposed dielectric-filled mushroom antenna is with a low profile of $0.08{\lambda _0}$ ( ${\lambda _0}$ is the operating wavelength in free space) while covering an area of $60\,{\text{mm}} \times 60\,{\text{mm}}$ only. The measured impedance bandwidth of the proposed antenna is 48.2% (5.2–8.5 GHz), and the measured 3 dB AR bandwidths are 35.5% (5.8–8.3 GHz). Moreover, the antenna performed a stable high gain which is better than 10.5 dBic from 6 to 7.5 GHz across the CP region.read more
Citations
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Journal ArticleDOI
Broadband and Low-Profile Penta-Polarization Reconfigurable Metamaterial Antenna
TL;DR: The proposed antenna can achieve a balance between low-profile and broadband on the basis of penta-polarization reconfigurability and can be applied to polarization diversity and C band satellite communication.
Journal ArticleDOI
Asymmetric circularly polarized open-slot antenna
Mubarak Sani Ellis,Francis Boafo Effah,Abdul-Rahman Ahmed,Jerry John Kponyo,Javad Nourinia,Changiz Ghobadi,Bahman Mohammadi +6 more
Journal ArticleDOI
Ultrasensitive THz Sensor Based on Centrosymmetric F-Shaped Metamaterial Resonators
Anchen Ma,Renbin Zhong,Zhenhua Wu,Yiqing Wang,Long Yang,Zekun Liang,Zheng Fang,Shenggang Liu +7 more
TL;DR: In this paper, an ultra-sensitive metamaterial terahertz absorption sensor based on centrosymmetric double F-shaped metal resonators is proposed, which achieved a perfect narrow-band absorption spectrum at 5.92 THz with high quality factor of 49.6.
Journal ArticleDOI
Characterization of chiral metamaterial sensor with high sensitivity
TL;DR: In this paper, a chiral metamaterial sensor is created by placing asymmetrically two meander lines front and back side of the substrate layer, which can be used for microwave sensing applications.
References
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Journal ArticleDOI
Metamaterial-Based Low-Profile Broadband Mushroom Antenna
TL;DR: In this paper, a metamaterial-based broadband low-profile mushroom antenna is presented, which is formed using an array of mushroom cells and a ground plane, and fed by a microstrip line through a slot cut onto the ground plane.
Journal ArticleDOI
Low-Profile Broadband Circularly Polarized Patch Antenna Using Metasurface
Son Xuat Ta,Ikmo Park +1 more
TL;DR: In this paper, a low-profile single-feed circularly polarized (CP) patch antenna using metasurface is proposed for broadband operation, which is comprised of a truncated corner square patch sandwiched between a lattice of $4 \times 4$ periodic metal plates and the ground plane.
Journal ArticleDOI
Single-Fed Broadband Circularly Polarized Stacked Patch Antenna With Horizontally Meandered Strip for Universal UHF RFID Applications
TL;DR: In this paper, a horizontally meandered strip (HMS) feed technique is proposed to achieve good impedance matching and symmetrical broadside radiation patterns for a single-fed broadband circularly polarized stacked patch antenna, which is suitable for universal ultra-high frequency (UHF) RF identification (RFID) applications.
Journal ArticleDOI
Broadband Design of Circularly Polarized Microstrip Patch Antenna Using Artificial Ground Structure With Rectangular Unit Cells
T Nakamura,Takeshi Fukusako +1 more
TL;DR: In this paper, a broadband circularly polarized patch antenna using an artificial ground (AG) structure with rectangular unit cells as a reflector is presented. And the results show a 10 dB return loss of 48.6% and a 3 dB axial ratio bandwidth of 20.4%.
Journal ArticleDOI
Metasurface Superstrate Antenna With Wideband Circular Polarization for Satellite Communication Application
TL;DR: In this article, a planar slot coupling antenna with an array of metallic rectangular patches that can be viewed as a polarization-dependent metasurface superstrate is proposed for C-band satellite communication application.