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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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A Frequency Selective Surface Loaded UWB Antenna for High Gain Applications

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Computers, Materials & Continua 2022年第12期73卷 6169-6180页

作者： wahaj abbas awan Do Min Choi Niamat Hussain Issa Elfergani Seong Gyoon Park Nam Kim Department of Information and Communication Engineering Chungbuk National UniversityCheongju28644Korea Instituto de Telecomunicacoes Campus Universitário de Santiago 3810-193Aveiro Portugal School of Engineering and Informatics Bradford UniversityBradfordBD71DPU.K Department of Information and Communication Engineering Kongju National UniversityKongjuKorea

This paper presents the design of wideband and high gainFrequency Selective Surface(FSS)loaded antenna for ultra-wideband(UWB)wireless applications requiring *** antenna consists of a monopole and an FSS ***,a conventional rectangular monopole antenna is modified using slot and stub to achieve wide operational bandwidth and size *** modified antenna shows 50%miniaturization compared to a primary rectangular monopole,having a wide impedance bandwidth of 3.6-11.8 ***,an FSS is constructed by the combination of circular and square ring *** FSS array consisting of 8×8-unit cells are integrated with the antenna as a reflector to enhance the performance of the proposed miniaturized UWB *** loading of FSS results in an improvement of at least 4 dBi gain in the entire operational ***,the antenna’s bandwidth is also increased at the lower frequency band due to the presence of the FSS.A prototype of the antenna is fabricated and tested to verify the simulation *** simulation and measurement results show that the antenna offers a wideband-10 dB impedance bandwidth ranging from 2.55-13GHz with a stable peak gain of 8.6 dBi and retains the radiation pattern stability.

关键词： FSS UWB antenna high gain antenna FSS reflector

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