Bandwidth and Gain Enhancement with Cross-Polarization Suppression in Microstrip Antenna with Superstate

Ali, Maifuz; Arya, Ravi Kumar; Yerrola, Anil Kumar; Murmu, Lakhindar; Kumar, Ashwani

doi:10.23919/ursigass51995.2021.9560119

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…Therefore, it is necessary to design a simple structure, the easily fabricable antenna that could cover all the 5G frequency bands or even all-important 5G bands with ultra-wide band (UWB) performance, and have high gain with directional radiation characteristics using the latest technologies like frequency selective surface (FSS), superstrate, artificial magnetic conductors (AMC), reflectors, etc [1012]. The FSS reflector is used as a reflector to enhance the gain of the planar antennas and also improve the directional radiation characteristics [13,14]. FSS is a periodic structure of unit cells that consists of metallic patches or space components with good transmission or reflection properties [15].…”

Section: *Author For Correspondencementioning

confidence: 99%

Gain and radiation pattern enhancement using ANN-based reflector antenna for full 5G Sub-6GHz applications

2024

IJATEE

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The development, analysis, fabrication, and measurements of an inset-feed frequency selective surface (FSS) monopole rectangular patch antenna based on the Fabry-Perot cavity (FPC) principle were discussed in this paper. The proposed antenna is fabricated on two pieces of flame retardant-4(FR4) substrate (FSS reflector) and RT Duroid 5880 substrate (main radiating patch) of equal size 49mm×49mm×1.6mm. The use of FR4 controls the cost of the antenna while the RT Durid maintains low losses and supports improvement in gain and radiation characteristics. The FPC principle is utilized to enhance antenna gain and directional radiation characteristics. The distance between the substrate and FSS layer is evaluated by developing a relationship using a machine learning artificial neural network (ANN) model-based method by speculating the output through iterations and it is validated by the high-frequency structure simulator (HFSS) optimization process. Equally spaced 15 dipole strips FSS layer is used as reflector surface which yields enhanced gain from 4.41dBi to 8.99dBi (∽4.58dBi improvement), unidirectional radiation patterns, and improved front-to-back-ratio (FBR) from 1.7dB to 17.5dB in the E-plane at the design frequency 5.5GHz. The antenna achieves a -10dB bandwidth from 1.12GHz to 8.64GHz (7.52GHz). The measured results are in close agreement with the simulated results. At the end, an electrical equivalent resistor, inductor, and capacitor (RLC) circuit of the proposed antenna has been generated from the antenna reflection coefficient. The reflection coefficient of the RLC equivalent circuit of the proposed antenna is validated using advanced design system (ADS) software. Since the antenna has ultra-wideband (UWB) performance, therefore it is most suitable for wireless 3G/4G/5G and Sub-6GHz lower frequency range (FR1), satellite, and RADAR communications.

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Section: *Author For Correspondencementioning

confidence: 99%

Gain and radiation pattern enhancement using ANN-based reflector antenna for full 5G Sub-6GHz applications

2024

IJATEE

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“…A total 7.15dBi gain improvement is achieved. Ali et al [38] have presented a modified rectangular patch antenna at mm-wave 24GHz using multi strips FSS superstrate which not only improves the -10dB bandwidth and gain but also controls the polarization and suppresses the cross-polarization.…”

Section: Literature Reviewmentioning

confidence: 99%

Gain enhancement of a monopole antenna using frequency selective surface for sub-6 GHz band applications

2023

IJATEE

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A monopole edge-fed triple-layered double-story rectangular patch antenna was designed in this study. The antenna was loaded with a frequency selective surface (FSS) to enhance its gain and radiation efficiency. Several antennas were designed without the reflector, and in this proposed work, an FSS was placed beneath the reduced length ground plane to act as a partial reflector for the antenna's back lobes. The microstrip rectangular patch antenna with an inset feed was fabricated on a low-loss RT Duroid 5880 substrate measuring 49mm × 49mm × 1.588mm. The FSS, on the other hand, was fabricated on an FR4 substrate of the same size. The FSS consisted of an array of equally spaced 49 rectangular dipole strips. When comparing the antenna with and without the FSS, it was found that the antenna without the FSS had a gain of 2.87dBi and a -10dB fractional bandwidth (FBW) of 92.66%. However, the antenna with the introduced FSS demonstrated an improved gain of 7.76dBi (an enhancement of 4.91dBi) and a reduced -10dB FBW of 49.08%. The introduction of the FSS resulted in improved radiation characteristics, transforming the bi-directional radiation pattern into a unidirectional one, and significantly improving the front-to-back ratio (FBR). Furthermore, the radiation efficiency of the antenna without the FSS at its resonant frequency of 5.8GHz was measured to be 94.68%, while with the FSS reflecting surface, it increased to 97.88%. The antenna with the FSS achieved a reflection coefficient below -10dBover a wideband range from 3.90GHz to 6.43GHz. Consequently, the proposed antenna was deemed suitable for various applications, including 5.8GHz WLAN and 5G sub-6 GHz bands such as n46 (5150 -5925MHz), n47 (5855 -5925MHz), n77 (3900-4200MHz), n79 (4400-5000MHz), and n96/n102 (5925-6425MHz). Additionally, this study presented the electrical equivalent, resistive inductive capacitive (RLC) circuit of the proposed antenna.

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“…These frequencies bands are used in the high-speed mobile communications, automotive radar, and 5G applications 5 . Several related antennas are developed in [6][7][8][9][10] . In 11 , a 3×3 rectangular microstrip patch antenna array is described in which a rectangular patch is used and it achieved S 11 bandwidth of ~2 GHz.…”

Section: Introductionmentioning

confidence: 99%

High Gain Beam Steering Antenna Arrays with Low Scan Loss for mmWave Applications

et al. 2022

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In millimeter-wave (mmWave) communications, the antenna gain is a crucial parameter to overcome path loss and atmospheric attenuation. This work presents the design of two cylindrical conformal antenna arrays, made of modified rectangular microstrip patch antenna as a radiating element, working at 28 GHz for mmWave applications providing high gain and beam steering capability. The microstrip patch antenna element uses Rogers RO4232 substrate with a thickness of 0.5 mm and surface area of 5.8 mm × 5.8 mm. The individual antenna element provides a gain of 6.9 dBi with return loss bandwidth of 5.12 GHz. The first antenna array, made by using five conformal antenna elements, achieves a uniform gain of approximately 12 dBi with minimal scan loss for extensive scan angles. In the second antenna array, a dielectric superstrate using Rogers TMM (10i) was used to modify the first antenna array. It enhanced the gain to approximately 16 dBi while still maintaining low scan loss for wide angles. The proposed array design method is very robust and can be applied to any conformal surface. The mathematical equations are also provided to derive the array design, and both array designs are verified by using full-wave simulations.

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Bandwidth and Gain Enhancement with Cross-Polarization Suppression in Microstrip Antenna with Superstate

Cited by 6 publications

References 7 publications

Gain and radiation pattern enhancement using ANN-based reflector antenna for full 5G Sub-6GHz applications

Gain and radiation pattern enhancement using ANN-based reflector antenna for full 5G Sub-6GHz applications

Gain enhancement of a monopole antenna using frequency selective surface for sub-6 GHz band applications

High Gain Beam Steering Antenna Arrays with Low Scan Loss for mmWave Applications

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