Improved Bandwidth Enhancement Techniques Using Hexagonal-Ring Shaped Tuning Stub and Band-Notched Characteristics Using C-Shaped Parasitic Element for Wireless Communication Systems

Thep Kueathaweekun

doi:10.15866/irecap.v7i5.12548

Improved Bandwidth Enhancement Techniques Using Hexagonal-Ring Shaped Tuning Stub and Band-Notched Characteristics Using C-Shaped Parasitic Element for Wireless Communication Systems

Thep Kueathaweekun^(1*)

^(*) Corresponding author

Authors' affiliations

DOI: https://doi.org/10.15866/irecap.v7i5.12548

Abstract

In this paper, improved bandwidth enhancement techniques by using hexagonal-ring shaped tuning stub and band-notched characteristics using C-shaped parasitic element for wireless communication systems are presented. The proposed slot antenna consists of a wide slot cutting on the ground plane and a microstrip feed line with a hexagonal-ring shaped tuning stub in the opposite side. This antenna uses hexagonal-ring shaped tuning stub for enhanced bandwidth; by using a C-shaped parasitic element inserted in the slot antenna it creates the band-notched function at 5-6 GHz band to avoid any interference between UWB systems and WLAN systems. The measured result of slot antenna can achieve a band-rejection from 5 GHz to 6 GHz. Moreover, the proposed antenna can be modified to tune the band-notch frequency and to enhance the bandwidth of band-notched. The radiation patterns of the slot antenna in the x-z plane (H-plane) are omni-directional and the y-z planes (E-plane) are bi-directional.
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Keywords

Band-Notch; C-Shaped Parasitic Element; Hexagonal-Ring Shaped Tuning Stub; UWB Antenna

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