Abstract

Abstract In the present article authors propose the design and analysis of an octagonal shape multiband metamaterial loaded antenna with implementation of hybrid fractal geometry for wireless applications. Multiband features in the antenna structure is realized by applying the slotted and hybrid fractalization of Moore and Koch curve approach in radiating section along with introduction of two metamaterial SRR cells. The frequency band reconfigurability characteristics in proposed design is achieved by placing the PIN diode inside the connecting strip between the central hybrid fractal geometry and feedline. During forward bias condition of PIN diode antenna structure resonates at hepta (seven) band mode at WiMAX (3.5 GHz)/Lower C-band (4.41 GHz)/WLAN (5.4/5.8 GHz)/Lower X-band (8.26 GHz)/Upper X-band (10.48 GHz)/Lower Ku-band (13.35 GHz)/Middle Ku-band (14.42 GHz) wireless standards with S 11 ≤ −10 dB. Proposed antenna represent the hexa and hepta band features during reverse bias (OFF-state) and forward bias condition (ON-state) of PIN diode respectively. A stable and consistent radiation patterns, appropriate impedance matching and an acceptable gain are achieved at all the operating frequencies of the proposed antenna.

Highlights

  • 1.1 Motivation AbstractIn the present article authors propose the design and analysis of an octagonal shape multiband metamaterial loaded antenna with implementation of hybrid fractal geometry for wireless applications

  • The frequency band reconfigurability characteristics in proposed design is achieved by placing the PIN diode inside the connecting strip between the central hybrid fractal geometry and feedline

  • During forward bias condition of PIN diode antenna structure resonates at hepta band mode at WiMAX (3.5 GHz)/Lower C-band (4.41 GHz)/WLAN (5.4/5.8 GHz)/Lower X-band (8.26 GHz)/Upper X-band (10.48 GHz)/Lower Ku-band (13.35 GHz)/Middle Ku-band (14.42 GHz) wireless standards with S11 ≤ −10 dB

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Summary

Related literature survey

The development in the field of multiband technology has grown up progressively to operate at various wireless communication modes. In [16,17,18], slotted antennas are designed to operate multiple wireless communication applications regarding smartphone and mobile handsets respectively Another methodology of metamaterial loading have garnered noteworthy attention in designing of multiple resonating smart antenna due to its specific characteristics like as negative dielectric parameters (permeability and permittivity), negative refractive index, electrically small in size etc. In this paper firstly we mentioned the design analysis of multiband slot antenna loaded with hybrid fractal geometry (radiating section: seven segments of hybrid fractals and three duplications) and metamaterial cell (two rectangular shape SRR) covering the hepta (seven) wireless communication modes at S band WiMAX (3.5 GHz)/Lower C band (4.41 GHz: terrestrial fixed and mobile broadband application)/C band WLAN (5.4/5.8 GHz)/Lower X-band (8.26 GHz: Earth exploration-satellite service ITU region 2)/ Upper X band (10.48 GHz: Amateur satellite operating band)/Lower Ku band (13.35 GHz: Radar communication application)/Middle Ku band (14.42 GHz: Geostationary satellite service). Fabrication and experimental results are discussed, and compare with simulated ones

Novelty
Antenna design and configuration
C2 C3 C4
Design and analysis of proposed metamaterial SRR
Results
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