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Sensitivity Study of Slotted Radiator Antenna-Based Sensor for Sweat Monitoring 基于开槽辐射天线的汗液监测传感器灵敏度研究
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10065148
A. M. Mozi, Zulhaikal Zulkarnil, A. R. Razali, A. Bakar, Nurul Huda Abdul Rahman, S. Azemi, N. M. Faudzi, A. Ibrahim
{"title":"Sensitivity Study of Slotted Radiator Antenna-Based Sensor for Sweat Monitoring","authors":"A. M. Mozi, Zulhaikal Zulkarnil, A. R. Razali, A. Bakar, Nurul Huda Abdul Rahman, S. Azemi, N. M. Faudzi, A. Ibrahim","doi":"10.1109/RFM56185.2022.10065148","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10065148","url":null,"abstract":"Analysis of sweat has grown rapidly for early diagnosis and monitoring applications in healthcare system. This paper presents a simple, economical, non-invasive slotted radiator microstrip antenna-based sensor for sweat monitoring with operating frequency of 2.4 GHz. The antenna-based sensor is designed in three different geometrically shape slotted radiator of copper patch on paper substrate. For sensitivity performance, the fabricated antenna-based sensor is tested with Sodium Chloride (NaCl) as artificial sweat solution. The variation of magnitude of reflection coefficient represented as S11 and shift in resonant frequency is observed. Square slotted radiator antenna-based sensor with the larger frequency shift of 0.17 GHz demonstrates better sensitivity performance compared to other antenna design.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"20 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114039726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi Beam Characteristics of Offset Spherical Reflector at 28 GHz 28ghz偏置球面反射器的多波束特性
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10065129
Ayuni Afiqah Arjunaidi, Y. Yamada, K. Kamardin
{"title":"Multi Beam Characteristics of Offset Spherical Reflector at 28 GHz","authors":"Ayuni Afiqah Arjunaidi, Y. Yamada, K. Kamardin","doi":"10.1109/RFM56185.2022.10065129","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10065129","url":null,"abstract":"5G mobile base station requires multi beam antenna system to serve massive MIMO. This paper proposes an offset spherical reflector with fixed multi beam operation. The concentrated caustics on offset spherical reflector are acquired through focal region ray tracing analysis of slant incident rays for feed position determination. Then, the multi beam radiation characteristics are obtained by FEKO simulation at 28 GHz. High antenna efficiency more than 70% is ensured at beam scanning angle from 10 to 30 degrees.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114377225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Path Loss Prediction in Urban Areas using Convolutional Neural Networks 基于卷积神经网络的城市路径损失预测
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10065059
Irfan Farhan Mohamad Rafie, Soo Yong Lim, Michael Jenn Hwan Chung
{"title":"Path Loss Prediction in Urban Areas using Convolutional Neural Networks","authors":"Irfan Farhan Mohamad Rafie, Soo Yong Lim, Michael Jenn Hwan Chung","doi":"10.1109/RFM56185.2022.10065059","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10065059","url":null,"abstract":"Urban area path loss prediction is becoming more important in cellular networks that operate at frequencies that are affected more by the loss of line-of-sight such as 5G and beyond 5G. The general move of the industry towards higher frequencies stresses the need to have optimal path loss prediction stronger. In this paper, we present a convolutional neural network based solution to predict path loss in an urban area using publicly sourced GIS data. The outcome of this work is not restricted to path loss prediction in urban areas only, but it is also applicable to disaster struck areas in which emergency cellular services are deployed.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"52 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123529771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A High-Q Planar Multi-Resonator for UWB Chipless RFID Tagging and Sensing Application 一种用于超宽带无芯片RFID标签与传感的高q平面多谐振器
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10065247
Ghazi Bin Wan Mohammad, DR.A.K.M ZAKIR HOSSAIN, M. Ibrahimy, S. Azam
{"title":"A High-Q Planar Multi-Resonator for UWB Chipless RFID Tagging and Sensing Application","authors":"Ghazi Bin Wan Mohammad, DR.A.K.M ZAKIR HOSSAIN, M. Ibrahimy, S. Azam","doi":"10.1109/RFM56185.2022.10065247","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10065247","url":null,"abstract":"This paper involves the design and realization of a new planar microstrip parallel L-shaped multi-resonator (PLMR) for the chipless radio frequency identification (CRFID) that works in ultra-wide band (UWB) frequency region. The proposed PLMR has identifying (IDing) and sensing capabilities to work as a tag-sensor. The PLMR works within 5.36 GHz – 8.63 GHz with a high quality-factor (Q) of 412, a very good spatial density of as low as 3.17 mm2/bit, good spectral density of 4.21 bits/GHz, and a coding capacity of 8 bit with one-bit sensing ability. A coding bit stream of 11111111 also is extracted to show the ability of the proposed design. This will motivate the CRFID designers to design a small and high-capacity tag-sensors for UWB applications.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121671490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Compact Printed Dual-Band (915MHz/2.4GHz) Folded Monopole Antenna 一种紧凑型印刷双频(915MHz/2.4GHz)折叠单极天线
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10064838
Faisal Ahmad Sheikh, Young Cheol Kim, I. Choi, Hyun Deok Kim
{"title":"A Compact Printed Dual-Band (915MHz/2.4GHz) Folded Monopole Antenna","authors":"Faisal Ahmad Sheikh, Young Cheol Kim, I. Choi, Hyun Deok Kim","doi":"10.1109/RFM56185.2022.10064838","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10064838","url":null,"abstract":"A compact printed dual-band folded monopole antenna has been proposed for the operation at 915MHz and 2.4GHz ISM bands. The dual resonance operation from a monopole antenna with a total length lesser than 0.2λ915MHz including a finite ground plane occupying 1/6th of the total antenna space is the main feature of the proposed antenna. Furthermore, the easier integration of the proposed dual-band antenna on the printed circuit board without using its ground plane is another important characteristic. The desired dual resonances were obtained by implementing a folded conductor pattern for the antenna’s main radiator along with two rectangular conductor stubs deployed at different positions along the main radiator on a 60 x 20 x 1mm3 FR4 substrate. The 915MHz resonance was caused by the folded conductor pattern of the main radiator with a stub located at its end while a shorter conductor segment was defined on the main radiator by placing the second rectangular stub at about 0.25λ2.4GHz caused the other resonance at 2.4GHz. The design of the proposed dual-band antenna was simulated and analyzed in ANSYS HFSS. The simulated return loss of about -18dB at both frequencies along with a peak realized gain of 3.2dB and 2.3dB were obtained at 915MHz and 2.4GHz respectively.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116795055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Jig Structure Based on an Open-Ended Coaxial Line for S11 Calibration for Dielectric Measurement 一种基于开放式同轴线的电介质S11校准夹具结构
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10065373
K. Shibata
{"title":"A Jig Structure Based on an Open-Ended Coaxial Line for S11 Calibration for Dielectric Measurement","authors":"K. Shibata","doi":"10.1109/RFM56185.2022.10065373","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10065373","url":null,"abstract":"An S11 calibration method for jigs with conditions referred to as SOM (short, open and one type of reference material) termination and a novel jig structure for precise S11 calibration using short termination are proposed. For this purpose, the inner diameter of the jig’s circular waveguide (sample holder) was made slightly larger than that of the outer conductor of the coaxial line to allow complete electrical contact. The results showed good agreement between the measured S11 after calibration and the theoretical S11 value. The permittivity was then estimated as an inverse problem via the electromagnetic analysis at frequencies of 0.10, 1.0 and 2.5 GHz from the S11 values measured with various liquids in the jig after calibration. As a result, good agreement between both values showed the effectiveness of S11 calibration with SOM termination using the proposed jig and the subsequent dielectric measurement method.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131037297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Performance Investigation of AMPR algorithm for Out-phased Power Amplifiers 超前功率放大器AMPR算法的性能研究
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10065210
S. Mohammady, P. Varahram
{"title":"Performance Investigation of AMPR algorithm for Out-phased Power Amplifiers","authors":"S. Mohammady, P. Varahram","doi":"10.1109/RFM56185.2022.10065210","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10065210","url":null,"abstract":"Designing Power Amplifiers has been the center of many researches around the world, and the main idea is always to reduce the power waste and improve the efficiency. Among many proposed designs, Out-phased PA provides outstanding power efficiency, however it suffers from a phenomena known as zero crossing. The zero crossing causes unwanted elements in frequency domain which leads to bandwidth leakage and so reducing the efficiency. Therefore analyzing the zero crossing and optimizing this phenomena is crucial. Recently a parameter is defined to measure the probability of this problem. This parameter is named Average to Minimum Power Ratio (AMPR). The probability of a modulated signal experiencing high AMPR is analyzed with Complementary Cumulative Distribution Function (CCDF). An approach is investigated to target the zero crossing effect and attempt to reduce the AMPR, and so the bandwidth expansion outcome. It is expected that by using the algorithm of AMPR reduction to Digital Signal Processing (DSP) segment before the SCS, the Error Vector magnitude or Mapping (EVM) is maintained.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115520059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Small Bandwidth SPDT Switch with Ideal Switch Uneven U-Shape Dumbbell DGS for 5G mm-Wave Application 小带宽SPDT交换机，理想开关不均匀u形哑铃DGS 5G毫米波应用
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10065119
A. Othman, H. Majid, N. Shairi, M. Ismail, N. Al-Fadhali, I. Ibrahim, Z. Zakaria, B. Esmail
{"title":"Small Bandwidth SPDT Switch with Ideal Switch Uneven U-Shape Dumbbell DGS for 5G mm-Wave Application","authors":"A. Othman, H. Majid, N. Shairi, M. Ismail, N. Al-Fadhali, I. Ibrahim, Z. Zakaria, B. Esmail","doi":"10.1109/RFM56185.2022.10065119","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10065119","url":null,"abstract":"The use of ideal switches Uneven U-shape Dumbbell DGS for the small bandwidth response of a mm-wave SPDT discrete switch in a 5G application is discussed in this study. Mathematical analysis of the DGS and the SPDT switch are discussed in this paper for the bandstop and allpass responses. The SPDT switch with ideal switches DGS in open circuit and short circuit conditions was constructed and simulated in CST Microwave Studio software to analyse its performance. During ideal switch in OFF state (open circuit), the DGS is active and proven to have bandstop properties at 26 GHz region with an attenuation response bandwidth of approximately 6.11 GHz at 10 dB and a maximum attenuation level (S21) of 31 dB. During an ideal switch in the ON state (short circuit), the DGS is inactive, resulting in a wideband allpass response with an insertion loss (S21) approximately 0.5 dB and an input reflection coefficient (S11) of more than 10 dB. As a result, the SPDT switch produces a useable small bandwidth isolation with an FBW of 11.62%. As a result, it meets the cognitive radio requirement for the 5G mm-wave front-end system.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115231678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Derivation of the Self-resonant Equations of Small Antennas by Using EM Simulation Results 利用电磁仿真结果推导小型天线自谐振方程
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10064744
Yoshihide Yamada, K. Kamardin, Ngu War Hlaing, T. Arima, Masaharu Takahashi, N. Michishita
{"title":"Derivation of the Self-resonant Equations of Small Antennas by Using EM Simulation Results","authors":"Yoshihide Yamada, K. Kamardin, Ngu War Hlaing, T. Arima, Masaharu Takahashi, N. Michishita","doi":"10.1109/RFM56185.2022.10064744","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10064744","url":null,"abstract":"Electromagnetic simulation results are very useful for understanding principles of antenna performances. In this paper, derivation method of self-resonant structural equations of a meander line and a normal-mode helical antenna are shown. The self-resonant equation is given by the equality equation of capacitive and reactive reactance. The inductive reactance equation is derived from the magnetic field distributions. The capacitive reactance equation is derived based on the electrical near field distributions obtained by electromagnetic simulator (FEKO) results. Self-resonant structures by the resonant equations and simulations are compared and good agreements are ensured.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116201096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Feasibility Study on the Polyethylene (PE) Waveguide Cable for Future Exploration in Terabit DSL 聚乙烯(PE)波导电缆在太比特DSL中应用的可行性研究
2022 IEEE International RF and Microwave Conference (RFM) Pub Date : 2022-12-19 DOI: 10.1109/RFM56185.2022.10064755
L. Yan, F. Seman, Y. S. Khee, A. A. Sohoo
{"title":"Feasibility Study on the Polyethylene (PE) Waveguide Cable for Future Exploration in Terabit DSL","authors":"L. Yan, F. Seman, Y. S. Khee, A. A. Sohoo","doi":"10.1109/RFM56185.2022.10064755","DOIUrl":"https://doi.org/10.1109/RFM56185.2022.10064755","url":null,"abstract":"Due to the demand for higher data rates and greater download speeds by users and increasing number of deployed devices providing content-rich data, new cost-effective technologies which utilizes the concept of waveguides over copper that can enable the realization of terabit DSL need to be explored to meet the required demands. This paper presents the assessment of propagation characteristics in a dielectric waveguide circular waveguide which include scattering parameters and attenuation coefficient. The design and simulation process have been carried out using CST Microwave Studios at the frequency of 100GHz to 300GHz. The polyethylene (PE waveguide) with diameter size of 0.5 mm and 0.63 mm which are the twisted pair cables used in the existing DSL technology are deployed during the studies. Based on the simulated reflection and transmission coefficient, the THz waves are able to propagate within the PE waveguide. It is also found that the attenuation coefficient which is which between 0.03 to 0.2 dB/cm is in par with the specification of the established communication system. The results obtained can be considered the first step on understanding the propagation characteristics of waveguide at terahertz frequency range towards the realization of Terabit DSL.","PeriodicalId":171480,"journal":{"name":"2022 IEEE International RF and Microwave Conference (RFM)","volume":"40 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127222907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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