Miniature Microstrip Patch Antenna Array Based on Defected Ground Structure for ISM Band Applications

2017 ◽  
Author(s):  
Ahmed Ghaloua ◽  
Jamal Zbitou ◽  
Larbi El Abdellaoui ◽  
Ahmed Errkik ◽  
Abdelali Tajmouati ◽  
...  
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Ism Band ◽  
Microstrip Patch

scholarly journals Microstrip patch antenna with defected ground structure for biomedical application

2019 ◽  
Vol 8 (2) ◽  
pp. 586-595 ◽  
Author(s):  
Md. Shazzadul Islam ◽  
Muhammad I. Ibrahimy ◽  
S. M. A. Motakabber ◽  
A. K. M. Zakir Hossain ◽  
S. M. Kayser Azam
Keyword(s):  
Patch Antenna ◽  
Single Channel ◽  
Biomedical Application ◽  
Low Cost ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Ism Band ◽  
Microstrip Patch

Proper narrowband antenna design for wearable devices in the biomedical application is a significant field of research interest. In this work, defected ground structure-based microstrip patch antenna has been proposed that can work for narrowband applications. The proposed antenna works exactly for a single channel of ISM band. The resonant frequency of the antenna is 2.45 GHz with a return loss of around -30 dB. The -10dB impedance bandwidth of the antenna is 20 MHz (2.442-2.462 GHz), which is the bandwidth of channel 9 in ISM band. The antenna has achieved a high gain of 7.04 dBi with an increase of 17.63% antenna efficiency in terms of realized gain by using defected ground structure. Three linear vector arrays of arrangement 1 2, 1 4 and 1 8 have been designed to validate the proposed antenna performances as an array. The proposed antenna is light weighted, low cost, easy to fabricate and with better performances that makes it suitable for biomedical WLAN applications.

scholarly journals A Miniature Microstrip Antenna Array using Circular Shaped Dumbbell for ISM Band Applications

2018 ◽  
Vol 8 (5) ◽  
pp. 3793
Author(s):  
Ahmed Ghaloua ◽  
Jamal Zbitou ◽  
Larbi El Abdellaoui ◽  
Mohamed Latrach ◽  
Ahmed Errkik ◽  
...  
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Microstrip Patch Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Antenna Structure ◽  
Microstrip Patch ◽  
Microstrip Antenna Array ◽  
Two Stages

The aim of this work is the achievement, and the validation of a small microstrip patch antenna array using a circular shaped dumbbell defected ground structure. This work has been dividing into two stages: The first step is to miniaturize a microstrip patch antenna resonating at 5.8GHz, which operate in the Industrial Scientific Medical band (ISM) and the second is to use a circular defected ground structure to shift the resonance frequency of the antenna array from 5.8GHz to 2.45GHz. At last, a miniaturization up to 74.47%, relative to the original microstrip antenna array has accomplished. The antenna structure has designed, optimized and miniaturized using CST MW Studio. The obtained results have compared with Ansoft’s HFSS electromagnetic solver. The antenna array has fabricated on FR-4 substrate, and its reflection coefficient is measured.

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