New Design Approach of a “2.4 GHz” Slotted Rectangular Patch Antenna with a Wideband Harmonic Suppression

The designing of an antenna with a wideband harmonic suppression will lead to enhance the overall antenna performance efficiency as well as neglecting electromagnetic noises. A “defective ground superimposing” or a Y-slot construct confederated with a ring hopefully meets an effective approach that is exploited in removing high level of harmonics in the design process. A “2.4 GHz” rectangular U-slot microstrip patch antenna with an active antenna radiators and harmonic suppression grid has been presented. The paper focuses on the geometrical of active integration antennas to achieve efficient filtering and easy attenuation of unwanted harmonics. Further, an embedded empirical antenna with a high-order harmonic suppression has been suggested. This is followed by a “complementary opening recoiled construct cell”. The proposed approach was developed to control the antenna harmonics at center frequency of "2.4GHz\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$2.4 \;{\text{GHz}}$$\end{document}." The simulation sketches show that the reflection coefficient of multiple harmonics had an effective suppression up to 3.2 dB without any effect on the resonant frequency. The radiation patterns at high suppression levels of harmonics are within the range (13.92–15.2 dB) for both E-plane and H-plane. Further, the designed antenna bandwidth at the resonant frequency is 85MHz\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\left( {85\;{\text{MHz}}} \right)$$\end{document}. Finally, the proposed antenna with DGS\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\text{DGS}}$$\end{document} had return losses and antenna gain of -23.15dB;8.25dB,\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\left( { - 23.15 \;{\text{dB}};\;8.25\;{\text{dB}}} \right),$$\end{document} respectively.