A bandwidth and gain enhancement for microstrip antenna based on metamaterial

A wideband antenna is studied in this paper using a multi‐layer metasurface structure and implementing a periodic array for enhancing the gain. The performance of the multilayer antenna is improved by using a sub‐wavelength Fabry‐Perot cavity (FPC). The feeding and main radiation patches of the microstrip antenna are placed separately on two substrates, which are stacked on top of each other without an air‐gap in between. Two other substrates are placed within an optimized distance on top of the microstrip antenna. This structure, which has a double‐sided periodic array configuration, includes a capacitive artificial impedance surface (AIS) on one side, and an inductive partially reflective surface (PRS) on the other side of the substrates. Making use of this configuration increases the gain up to 18 dBi and widens the frequency bandwidth. Moreover, measurement results indicate a frequency range from 10.8 GHz to 15 GHz with an S11 less than −10 dB.

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“…Despite wide frequency bandwidth characteristics provided in Refs. , they have lower gain compared to proposed antenna in Ref. .…”

Section: Introductionmentioning

confidence: 67%

“…Also, gain enhancement in Refs. has been obtained by dual FSS layers and metamaterial structure, respectively. Despite wide frequency bandwidth characteristics provided in Refs.…”

Section: Introductionmentioning

confidence: 99%

Design of a high‐gain wideband antenna using double‐layer metasurface

Asadpor

Sharifi

Rezvani

2018

Micro & Optical Tech Letters

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“…Metamaterial has some unusual and interesting properties, 7 which can be used for the improvement of different antenna parameters. For example, impedance bandwidth, [8][9][10][11] side-lobe levels, isolation in MIMO antennas, [12][13][14] crosspolarization, 15 antenna gain [15][16][17][18][19][20] can be improved by exploiting various properties of MTMs. In, ref.…”

Section: Introductionmentioning

confidence: 99%

“…In, ref. [] planar metamaterial is used for the design of an ultrawide band high‐gain microstrip antenna. In, ref.…”

Section: Introductionmentioning

confidence: 99%

Metamaterial‐inspired low‐profile high‐gain slot antenna

Pandit

Mohan

Ray

2019

Micro & Optical Tech Letters

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This article presents a novel polarization‐independent metamaterial (MTM) which is used for the design of a low‐profile high‐gain magnetic dipole antenna operating at 9.8 GHz. The MTM is alike star‐shape and shows low impedance property around the frequency 9.8 GHz. The reference antenna, which is the SIW‐based slot antenna acts as a magnetic dipole antenna and it has peak gain of 3 dBi. The metamaterial‐inspired slot antenna has low‐profile, that is, 0.133 λ0 at the frequency 9.8 GHz, and peak gain of 8.24 dBi. At the resonance frequency, more than 5 dB gain improvement is achieved in the proposed design. These results are verified with the fabrication of a prototype antenna and measurements. The cross‐polarized radiation is negligibly altered by this gain enhancement method. The proposed antenna can be used in wireless power transfer and LoS communications.

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“…To realize the full potential of μ‐negative property, the dimensions of SRR should be less than λ/10 or lesser . Antenna gain enhancement using SRRs is widely proposed in literature …”

Section: Introductionmentioning

confidence: 99%

Transparent dual band antenna with μ‐negative material loading for smart devices

Desai

Upadhyaya

2018

Micro & Optical Tech Letters

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A dual‐band optically transparent antenna having two slotted circular rings with partial ground plane is proposed for smart applications. The antenna has circular split ring resonators (SRRs) array which offers negative refractive index properties to the resonator. The antenna is fed using microstrip feed line which is matched at 50 Ω. The conducting patch, partial ground plane and two circular SRRs are made up of transparent conducting thin film AgHT‐8 having transparency of above 80%. Substrate in the form of Plexiglas is used for making the antenna structure completely transparent. Metamaterial is incorporated for achieving acceptable values of antenna gain. The patch design is engineered for antenna operation in IEEE a/b/g/n frequency bands working at 2.4 GHz and 5.5 GHz, respectively. The size of the proposed transparent antenna is 35 × 35 × 1.84 mm3 with measured impedance bandwidth of 13.27% and 5.28% achieved for lower frequency band of 2.4 GHz and the upper frequency band of 5.5 GHz, respectively. The proposed antenna is useful for smart devices communicating over WLAN frequency bands without need of extra board space due to the optical transparency of antenna.

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A bandwidth and gain enhancement for microstrip antenna based on metamaterial

Cited by 15 publications

References 12 publications

Design of a high‐gain wideband antenna using double‐layer metasurface

Design of a high‐gain wideband antenna using double‐layer metasurface

Metamaterial‐inspired low‐profile high‐gain slot antenna

Transparent dual band antenna with μ‐negative material loading for smart devices

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