Analysis and design of circular fractal antenna array for multiband applications

Bhatia, Sujata K.; Sivia, Jagtar Singh

doi:10.1007/s41870-018-0186-0

Cited by 14 publications

(6 citation statements)

References 22 publications

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“…To cover the wide bandwidth and to overcome the atmospheric absorption that peaks at 60 GHz at 16 dB/km which requires a high gain antenna, can be accomplished by large antenna arrays. The dimensions of the antenna are given by equations ( 42) and (43), respectively [131,132]:…”

Section: G Antenna Designs In 60 Ghz Frequency Bandsmentioning

confidence: 99%

Design, developments, and applications of 5G antennas: a review

Pant

Malviya

2022

Int. J. Microw. Wireless Technol.

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As the demand for high data rates is increasing day by day, fifth-generation (5G) becomes the leading-edge technology in wireless communications. The main objectives of the 5G communication system are to enhance the data rates (up to 20 Gbps) and capacity, ultra-low latency (1 ms), high reliability, great flexibility, and enhance device to device communication. The mentioned objectives lead to the hunting of the millimeter-wave frequency range which lies from 30 to 300 GHz for 5G wireless communications. To design such high capacity, low latency, and flexible systems, antenna design is one of the crucial parts. In this paper, a survey is presented on various antenna designs with their fabrication on different types of substrates such as Rogers RT/duroid 5880, Rogers RO4003C, Taconic TLY-5, etc., at different 5G frequency bands. The different configurations of antennas that covered antenna arrays, multiple-input multiple-output (MIMO) antennas, phased antennas, and beamforming antennas are discussed in detail with their applications. The design of MIMO antennas in the 5G frequency band occupied less space so mutual coupling reduction techniques are required for maintaining the required gain, efficiency, and isolation. This paper is also focused on the mutual coupling reduction techniques and diversity in MIMO antennas.

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Section: G Antenna Designs In 60 Ghz Frequency Bandsmentioning

confidence: 99%

Design, developments, and applications of 5G antennas: a review

Pant

Malviya

2022

Int. J. Microw. Wireless Technol.

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“…The value of gain has observed at each resonating frequency. Arrays presented in references [33][34][35][36][37][38] work at the most 10 resonating frequencies with maximum gain of 9.29 dB and used in wireless and biomedical fields but the proposed array works at 13 frequencies with maximum gain of 12.127 dB and can be used in L, S, C, X and Ku band applications. Thus, the proposed array is better than the arrays present in literature.…”

Section: Comparison Of Proposed Work With Previous Workmentioning

confidence: 99%

Development of virtual instrument model for parameter estimation of fractal antenna array

Rani¹,

Sivia²

2021

Int. J. Microw. Wireless Technol.

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This paper presents the parameter estimation of the fractal antenna array with the virtual instrument model designed in laboratory virtual instrument engineering workbench software. In this work resonant frequency, gain and voltage standing wave ratio have been used as an output parameter with the change in three input parameters such as radius of a circular patch, height of substrate, and dielectric constant of the material. Measured output parameters have been compared with neural network outputs and error has been represented in a graphical way for each output parameter of the antenna array. Along with output parameter estimation, a designing parameter such as radius of the circular patch has also been estimated with virtual instrument model and absolute error for radius has been shown in the display window of the designed model. The proposed antenna array has been fabricated and simulated results have been validated with measured results.

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“…In [21], a Multiple-Input Multiple-Output (MIMO) radar system consisting of 18 transmit and 24 receive antennas and operating in the frequency range from 77 to 81 GHz was designed based on antenna array topologies with space filling fractals, and the results revealed an enhancement in the measurement accuracy compared to traditional radar systems. In [22], a modern design of an eight-element circular fractal array was proposed for covering distinct wireless systems, such as Wi-Max (3.5-3.8 GHz), WLAN (5.15-5.85 GHz), and X-band for satellite communications (7.1-7.76 GHz).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Wideband Thinned Eisenstein Fractile Antenna Arrays With Adaptive Beamforming Capability and Reduced Side-Lobes

2022

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A modern design of fractal antenna arrays, called fractile array, which exhibits a fractal boundary contour within a tiled plane, is explored for enhanced array performance. In this paper, the Eisenstein fractile array is introduced to exploit the unique geometrical features of fractiles that allow multiband and wideband operation and avoid grating lobes in the radiation pattern even, in some cases, when the array elements' spacing is greater than the half wavelength. To alleviate the large number of elements and the high Side-Lobe Level (SLL) occurred at large scales, the Genetic Algorithm (GA) optimization technique is considered for thinning the proposed antenna array by estimating the optimal set of "on" and "off" elements corresponding to the minimum SLL without degrading the directivity of the radiation pattern. Also, the proposed array configuration is designed with adaptive beamforming capability using the Least Mean Square (LMS) technique. The effectiveness of the proposed GA-LMS approach is investigated by performing several MATLAB simulations under various set of array configurations. Results reveal that the suggested thinned Eisenstein fractile antenna array using GA-LMS approach is superior in terms of multiband and wideband performance, array element reduction, SLL reduction, grating lobe elimination, and beamforming capability. This elucidates the robustness of the suggested thinned Eisenstein fractile array as a promising design for multiband, wideband, compact, inexpensive, and adaptive smart antennas in modern wireless systems.

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Analysis and design of circular fractal antenna array for multiband applications

Cited by 14 publications

References 22 publications

Design, developments, and applications of 5G antennas: a review

Design, developments, and applications of 5G antennas: a review

Development of virtual instrument model for parameter estimation of fractal antenna array

Synthesis of Wideband Thinned Eisenstein Fractile Antenna Arrays With Adaptive Beamforming Capability and Reduced Side-Lobes

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