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Helix Inspired 28 GHz Broadband Antenna with End-Fire Radiation Pattern

Computers, Materials & Continua 2022年第1期70卷 1935-1944页

作者： Hijab Zahra Wahaj abbas Awan Niamat Hussain syed muzahir abbas Subhas Mukhopadhyay School of Engineering Faculty of Science and EngineeringMacquarie UniversitySydneyNSW2109Australia Department of Integrated IT Engineering Seoul National University of Science and TechnologySeoul01811Korea Department of Information and Communication Engineering Chungbuk National UniversityChungbuk28644Korea BENELEC BotanySydneyNSW2019Australia

This paper presents the design and characterization of a via free planar single turn helix for 28 GHz broadband *** proposed antenna is designed using ROGERS RO4003 material,having a simple structure and end-fire radiation *** antenna comprises of a compact dimension of 1.36λ_(0)×0.9λ_(0) with a thickness of 0.0189λ_(0)(whereλ_(0) is the free-space wavelength at the central frequency of 28 GHz).Parametric study has been carried out to investigate the impact of key design parameters and to achieve an optimum *** show a good agreement between the simulated and measured results.A single turn helical inspired antenna covers−10 dB impedance bandwidth of 26.25-30.14 GHz having a peak gain of 5.83 dB and radiation efficiency up to 85%.Moreover,linear array configurations with 2 and 4 elements have been analyzed for applications with higher gain and space *** array configurations are suitable for applications having space constraints in one *** show that peak gain up to 8.2 dB and 11.1 dB can be achieved with 2 and 4 elements,*** to its simple planar and via free structure,this antenna is suitable for 5G communications and for sensing,imaging,IoT and tracking applications at 28 GHz band spectrum.

关键词： Compact antenna millimeter wave antenna 28 GHz 5G antenna

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Ultra-wideband Frequency Selective Surface for Communication Applications

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Computers, Materials & Continua 2022年第3期70卷 6177-6187页

作者： Shahid Habib Ghaffer Iqbal Kiani Muhammad Fasih Uddin Butt syed muzahir abbas Abdulah Jeza Aljohani Soon Xin Ng Department of Electrical and Computer Engineering COMSATS University IslamabadIslamabad45550Pakistan Department of Electrical and Computer Engineering King Abdulaziz UniversityJeddahKingdom of Saudi Arabia School of Electronics and Computer Science University of SouthamptonSouthamptonSO171BJUK School of Engineering Faculty of Science and EngineeringMacquarie UniversitySydneyNSW2109Australia BENELEC BotanySydneyNSW2019Australia

A low-profile ultra-wideband(UWB)band-stop frequency selective surface(FSS)is designed for S-,C-,X-and Ku-bands communication *** FSS is constructed by using square and circular loop elements printed on the top and bottom sides of the RO3210 *** FSS has been designed to reduce the electromagnetic interference(EMI)as well as to mitigate the harmful effects of electromagnetic radiation on the human body caused by different radio *** dimension and size of the UWB FSS have been reduced to 0.12λ×0.12λand 90%,respectively,as compared to the reported *** other advantages of the proposed FSS are that it is low profile,it has a simplified geometry and it ensures better angular and polarization stability of up to 85◦.The-10 and-20 dB bandwidths of the proposed FSS are 146%(2.0-13.0 GHz)and 80%(4.87-11.42 GHz),*** results have been obtained using ANSYS HFSS and verified through measured results.

关键词： Electromagnetic radiation fractional bandwidth polarization transverse electric transverse magnetic

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