Performance enhancement of nested hexagonal ring‐shaped compact multiband integrated wideband fractal antennas for wireless applications

Sharma, Narinder; Bhatia, Sujata K.

doi:10.1002/mmce.22079

Cited by 30 publications

(30 citation statements)

References 45 publications

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“…Surface current distribution of the proposed antenna at lower and higher frequency bands also elucidates enhanced performance in terms of bandwidth. It has also been observed from Figure 9, that proposed antenna operates in TEM mode 44 and its model analysis at different frequencies.…”

Section: Cpw‐fed Ssamentioning

confidence: 68%

Design of printedUWBantenna withCPWandmicrostrip‐line‐fedforDCS/PCS/bluetooth/WLANwireless applications

Sharma

Bhatia

2020

Int J RF Microw Comput Aided Eng

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Spiral-shaped UWB antennas, which are differ from each other in terms of feeding structure are presented in this manuscript. CPW and microstrip line feeding are used to excite the designed antenna to obtain different performance parameters. The overall physical dimensions of proposed antennas are 27 × 27 × 1.6 mm 3. These antennas are designed on low cost FR4 glass epoxy substrate with 1.6 mm thickness and dielectric constant 4.4. Impedance bandwidth (S 11 < −10 dB) obtained for measured CPW-fed antenna is 176.82% ranging (1.23-20.0 GHz) and microstrip line-fed antenna is 169% ranging (1.68-20.0 GHz). Various performance parameters of both the designed antennas are observed and calculated, such as, radiation pattern, gain, group delay, and radiation efficiency, which all are in the acceptable range for distinct UWB communication and other wireless standards. The optimized designed antennas are fabricated and tested for the validation of results and comparison among simulated and measured results of antennas have been made and found in good agreement with each other.

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Section: Cpw‐fed Ssamentioning

confidence: 68%

Design of printedUWBantenna withCPWandmicrostrip‐line‐fedforDCS/PCS/bluetooth/WLANwireless applications

Sharma

Bhatia

2020

Int J RF Microw Comput Aided Eng

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“…The projected tree-shaped hybrid fractal antenna is modeled in a systematic and accurate way. The design criterion is properly selected by focusing on the desired performance [22]. The antenna must have lower S11 value (≤ -10 dB) and high gain at the frequency of interest.…”

Section: Projected Antenna Resultsmentioning

confidence: 99%

“…high-frequency structure simulator (HFSS) software. Simulations up to 2 nd iterations are conducted for the effectiveness of the hybrid fractal concept [22]. Enhancement in the electrical length of current flow paths is reported, which allows a reduction in the fundamental operating frequency [31].…”

Section: Projected Antenna Resultsmentioning

confidence: 99%

“…Several nested hexagonal fractal antennas using ring-like pattern were designed with different rotation angles. Fabricated prototypes were analyzed and found that they are beneficial for wireless applications [22]. Nowadays, researchers are showing keen interest in the study and physical realization of antennas designed for biomedical purposes.…”

Section: Introductionmentioning

confidence: 99%

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Tree-shaped Hybrid Fractal Antenna for Biomedical Applications using ANN and PSO

Kaur

Sivia²

2021

Preprint

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In the present scenario, there is a rapid development in the field of designing efficient medical devices for advanced health care purposes. A distinct hybrid fractal approach for designing tree-shaped antenna using artificial neural network (ANN) and particle swarm optimization is explored in this research paper. ANN modelling provides a promising solution, especially for solving various problems that are usually encountered in science and engineering. A Koch–like structure is added to a Giuseppe Peano-like structure for the construction of a parent hybrid shape. The overall volume of the FR4 based designed prototype is 24 x 20 x 1.6 mm 3 . The tree-like geometry is excited by a microstrip line feed, placed at the centre axis of the selected substrate. The ground plane dimension ‘L g ’ has been optimized specifically with particle swarm optimization technique. To realize the effectiveness of the hybrid fractal approach, the projected antenna is experimentally analyzed. The designed structure is compact, geometrically appealing and offers sufficient bandwidth. The projected antenna operates over 2.41 to 2.44 GHz, with fundamental frequency of 2.42 GHz. The S11 ≤ -10 dB bandwidth examined at the working frequency is 1.44% (35.1 MHz). Moreover, the projected antenna offers promising gain and stable radiation patterns at the claimed frequency. A simplified ANN strategy is also utilized for the estimation of selected output parameters. For completeness, simulated, estimated, optimized and experimental responses are reported to examine the reliability of the proposed hybrid fractal approach. Furthermore, the performance is effectively described by analyzing the behavior of projected antenna with different excitation methods. Excellent outcomes validate that this compact device makes it an ideal choice for bimedical applications.

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“…The proposed structures of designed antenna are printed on a low cost FR4 glass epoxy substrate of thickness h = 1.6 mm with dielectric constant ε r = 4.4, loss tangent δ e = 0.02, mass density 19,000 kg/m 3 , and resonant frequency f r = 5.65 GHz. By considering above mentioned parameters, the radius of hexagonal patch is computed as R = 7 mm based on following equations [17].…”

Section: Proposed Antenna Design Stagesmentioning

confidence: 99%

A Compact Wideband Antenna Using Partial Ground Plane With Truncated Corners, L – Shaped Stubs and Inverted T – Shaped Slots

Bhatia¹,

Sharma²

2020

PIER M

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The design of a wideband antenna using truncated corners partial ground plane loaded with L-shaped stubs and inverted T-shaped slots has been presented in this manuscript. The different concepts and structures related to antenna designing have been employed to attain the optimized model of antenna. L-shaped stubs and inverted T-shaped slots incised in the structure of antenna improve the impedance matching and bandwidth of the proposed antenna. A fed 50 Ω microstrip line has been applied to the proposed structure for attaining distinct performance parameters like reflection coefficient, gain, and radiation pattern. The distinct structures of proposed antenna have been juxtaposed, and it is found that the structure with L-shaped stubs and inverted T-shaped slots shows improved antenna performance parameters. The designed antenna exhibits the bandwidth of 133.04% (3.14-15.62 GHz) and 16.96% (18.56-22.0 GHz) with improved reflection coefficient and gain. The proposed antenna has also been fabricated and tested for the validation of simulated and measured results, and found in good agreement with each other. The design of proposed antenna is carved on a low cost thick substrate with compact electrical size of 0.566λ × 0.452λ × 0.0301λ mm 3 at 5.45 GHz frequency and can be used for different wireless applications in the frequency range 3.14-15.62 GHz and 18.56-22.0 GHz.

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Performance enhancement of nested hexagonal ring‐shaped compact multiband integrated wideband fractal antennas for wireless applications

Cited by 30 publications

References 45 publications

Design of printedUWBantenna withCPWandmicrostrip‐line‐fedforDCS/PCS/bluetooth/WLANwireless applications

Design of printedUWBantenna withCPWandmicrostrip‐line‐fedforDCS/PCS/bluetooth/WLANwireless applications

Tree-shaped Hybrid Fractal Antenna for Biomedical Applications using ANN and PSO

A Compact Wideband Antenna Using Partial Ground Plane With Truncated Corners, L – Shaped Stubs and Inverted T – Shaped Slots

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