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2018 IEEE International RF and Microwave Conference (RFM)最新文献

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A Tunable Input-Impedance Matching Approach for Long-term Degradation effects of Power Amplifier 功率放大器长期退化效应的可调输入阻抗匹配方法
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/RFM.2018.8846551
Hossein Eslahi, S. Albahrani, Dhawal Mahajan, S. Khandelwal
{"title":"A Tunable Input-Impedance Matching Approach for Long-term Degradation effects of Power Amplifier","authors":"Hossein Eslahi, S. Albahrani, Dhawal Mahajan, S. Khandelwal","doi":"10.1109/RFM.2018.8846551","DOIUrl":"https://doi.org/10.1109/RFM.2018.8846551","url":null,"abstract":"This paper presents a simple approach in the design of a CMOS-based power amplifier (PA) which mitigates the implications of the aging of the transistors involved in the circuit. Using 45nm-RFSOI PDK we first design and simulate a PA. Next, we use the Relxpert simulation tool to simulate the long-term degradation behavior of this PA. We investigate the device-level causes of long-term degradation, accounting for both DC and RF stress. Based on our investigations, we propose an approach which relies on tuning of the input-impedance matching network, using two varactors in this network to mitigate the effect of transistors aging on the PA’s performance.","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123087425","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: 1
Achieving Minimal PDN Impedance, SSN and Jitter on PCB with Embedded Capacitance Material 利用嵌入式电容材料在PCB上实现最小PDN阻抗、SSN和抖动
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/RFM.2018.8846556
Chang Fei Yee
{"title":"Achieving Minimal PDN Impedance, SSN and Jitter on PCB with Embedded Capacitance Material","authors":"Chang Fei Yee","doi":"10.1109/RFM.2018.8846556","DOIUrl":"https://doi.org/10.1109/RFM.2018.8846556","url":null,"abstract":"In this paper, the imperativeness of low power distribution network (PDN) impedance on printed circuit board (PCB) with high frequency signals operating at hundreds of Mega-Hz range and the impact of embedded capacitance material (ECM) in minimizing wideband PDN impedance are discussed. The study to compare the performance of PCB with ECM versus conventional dielectric FR4 material was conducted with post-layout power integrity simulation using Keysight ADS on the power net of interest, followed by measurement of PDN impedance and simultaneous switching noise (SSN) using network analyzer (VNA) and oscilloscope respectively on prototype PCB. Lastly, eye diagram and jitter of the high frequency clock signal on the PCB are observed. The correlated simulation and measurement results are presented and discussed in the later section of this paper.","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128542190","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: 1
A Demonstration of the Near-Field Imaging Modes Using UHF Imaging Probe 超高频成像探头近场成像模式的演示
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/RFM.2018.8846565
Z. Akhter, M. Abou-Khousa
{"title":"A Demonstration of the Near-Field Imaging Modes Using UHF Imaging Probe","authors":"Z. Akhter, M. Abou-Khousa","doi":"10.1109/RFM.2018.8846565","DOIUrl":"https://doi.org/10.1109/RFM.2018.8846565","url":null,"abstract":"A super-resolution near-field ultrahigh frequency (UHF) imaging probe has been recently introduced. This electrically small UHF probe is consist of a square loop loaded with a spiral resonator (SR), resonating at 426 MHz (free space wavelength λ ≈ 740 mm) with overall footprint 7.2 mm × 7.2 mm. In this paper, three distinct imaging modes using this probe are demonstrated. These imaging modes utilize single or swept frequency RF source in order to image the sample under test (SUT). A comparative investigation of the obtained microwave images through these imaging modes is carried out. It is found here that the cost-effective near-field imaging system can be realized with the UHF probe by utilizing its single frequency measurement mode.","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132759584","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
Design and Performance of Microstrip Patch Antenna for Implantable Biomedical Applications 植入式生物医学微带贴片天线的设计与性能
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/RFM.2018.8846508
K. Ali, K. Kamardin, Yoshihide Yamada, I. H. Idris, Muhaimin Mokhtar, N. Rahman
{"title":"Design and Performance of Microstrip Patch Antenna for Implantable Biomedical Applications","authors":"K. Ali, K. Kamardin, Yoshihide Yamada, I. H. Idris, Muhaimin Mokhtar, N. Rahman","doi":"10.1109/RFM.2018.8846508","DOIUrl":"https://doi.org/10.1109/RFM.2018.8846508","url":null,"abstract":"In this work, the comparison of two designs of implantable patch antennas made of different substrates for Industrial, Scientific and Medical (ISM) band which is between 2.4–2.48 GHz is presented. The two proposed antennas made of Alumina and Arlon substrates are designed and simulated by using FEKO software. The antenna is designed and its antenna’s performance is studied. The antenna’s performance is studied in two situations, in free space and in phantom where the antenna is embedded under the human skin. The antenna characteristics such as return loss, input impedance, radiation pattern and gain performance were observed in the same band, using different types of substrate materials and in different situations as mentioned earlier. From the simulation results, the antenna performance will be observed to determine which antenna is more suitable to be embedded in human body. The proposed implantable patch antenna is suitable for body communication applications.","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133466366","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: 1
Remote Delivery of Uplink Carrier for Incoherent Millimeter Wave Radio-over-Fiber System 非相干毫米波光纤无线通信系统上行载波的远程传输
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/RFM.2018.8846523
M. Boroon, M. Bakaul, Th’ng Guo Hao
{"title":"Remote Delivery of Uplink Carrier for Incoherent Millimeter Wave Radio-over-Fiber System","authors":"M. Boroon, M. Bakaul, Th’ng Guo Hao","doi":"10.1109/RFM.2018.8846523","DOIUrl":"https://doi.org/10.1109/RFM.2018.8846523","url":null,"abstract":"Radio-over-fiber (RoF) is a promising backhaul technique for upcoming 5G wireless technology. Taking advantage of the optical diversity, generation of stable high frequency radio signals greatly simplifies base stations. This paper proposes a new remote delivery scheme of uplink carrier that simplifies incoherent millimeter-wave RoF systems significantly. Numerical and Simulation results of a full duplex 2.5 Gbps NRZ system show desirable bit error rate at signal to noise ratio of 18.5 and 21.7 for downlink and uplink data respectively in presence of 20 km single mode fiber. The findings establish a new carrier delivery scheme which greatly benefits the future 5G technology in terms of simplicity and cost.","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128276516","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
Numerical Calculation Error of Variational Method with Dielectric Measurement Using a Coaxial-probe 同轴探头电介质测量变分法的数值计算误差
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/RFM.2018.8846566
K. Shibata, Masaki Kobayashi
{"title":"Numerical Calculation Error of Variational Method with Dielectric Measurement Using a Coaxial-probe","authors":"K. Shibata, Masaki Kobayashi","doi":"10.1109/RFM.2018.8846566","DOIUrl":"https://doi.org/10.1109/RFM.2018.8846566","url":null,"abstract":"This study was conducted to clarify how numerical calculation with higher-mode exclusion affects dielectric property estimation in application with the variational method to calculate S11 using the open-ended coaxial-probe method. Specifically, the dielectric constants of certain liquid types were estimated based on an inverse problem to coincide with S11 values calculated using the variational method (VM) and the finite element method (FEM) at frequencies of 0.50 and 2.50 GHz, respectively. The estimation results were compared with the set dielectric property values associated with S11 calculation using the FEM. Differences of 10.4 to 29.0% in the complex permittivity of tap water were observed with VM application using the coaxial-probe method as compared with FEM application.","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134282999","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: 1
Verification of Lens Antenna Shaping Based on Refraction Angles 基于折射角的透镜天线整形验证
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/RFM.2018.8846560
F. Ansarudin, T. Rahman, Yoshihide Yamada
{"title":"Verification of Lens Antenna Shaping Based on Refraction Angles","authors":"F. Ansarudin, T. Rahman, Yoshihide Yamada","doi":"10.1109/RFM.2018.8846560","DOIUrl":"https://doi.org/10.1109/RFM.2018.8846560","url":null,"abstract":"A dielectric lens antenna becomes a promising candidate for 5G mobile system in the range of millimeter wave frequency band because of the simplicity of the structure and ease of installation. Special radiation pattern such as low sidelobe, high gain and multibeam are expected to achieve many radiation patterns. This paper describes the verification of lens shaping based on refraction angles at lens surfaces. The lens surface shaping program was developed using a MATLAB software. The ratio of sinusoidal function of incident angle and the refracted angle should be equal to the refractive index. The angular relations are checked for various sample points. At points where lens curvature is sufficient, angle relations agree very well with the refractive index. At point where lens surface becomes flat, incident and refracted angles become small thus rendering the agreement of angle relation and refractive index insufficient. As a whole, surface designing accuracy is verified by comparing the refraction angles for both lens surfaces obtained from MATLAB simulation and angular calculation.","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117203497","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
RFM 2018 Author Index RFM 2018作者索引
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/rfm.2018.8846473
{"title":"RFM 2018 Author Index","authors":"","doi":"10.1109/rfm.2018.8846473","DOIUrl":"https://doi.org/10.1109/rfm.2018.8846473","url":null,"abstract":"","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115760087","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
Channel Capacity Enhancement using MIMO Antenna 利用MIMO天线增强信道容量
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/RFM.2018.8846497
B. Rohani, H. Arai
{"title":"Channel Capacity Enhancement using MIMO Antenna","authors":"B. Rohani, H. Arai","doi":"10.1109/RFM.2018.8846497","DOIUrl":"https://doi.org/10.1109/RFM.2018.8846497","url":null,"abstract":"Multiple-input multiple-output (MIMO) is developed as a system that is capable of delivering larger capacity content in wireless communication systems hence many researches reflecting on that purpose. MIMO antenna utilizes parameters such as radiation pattern, polarization and array configuration with regard to improve the capacity in the channel. This paper presents a summary on discussions of channel capacity improvement utilizing polarization diversity technique with directional beam antenna. Three different antennas that share the same MIMO characteristics are introduced where not only simulation results, proper channel propagation measurement also is presented as a validation to real indoor communication environment.","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"320 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116541210","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: 3
Base Station Antennas for the 5G Mobile System 5G移动系统基站天线
2018 IEEE International RF and Microwave Conference (RFM) Pub Date : 2018-12-01 DOI: 10.1109/RFM.2018.8846489
Yoshihide Yamada, Kamelia M. Chatib Quzwain, Intan Izafina Idrus, Tarik Abd Latef, F. Ansarudin, M. Ishfaq, T. Rahman
{"title":"Base Station Antennas for the 5G Mobile System","authors":"Yoshihide Yamada, Kamelia M. Chatib Quzwain, Intan Izafina Idrus, Tarik Abd Latef, F. Ansarudin, M. Ishfaq, T. Rahman","doi":"10.1109/RFM.2018.8846489","DOIUrl":"https://doi.org/10.1109/RFM.2018.8846489","url":null,"abstract":"The fifth-generation (5G) mobile communication system will require the multi-beam base station. By taking into account millimeter wave use, any antenna types such as an array, reflector and dielectric lens antennas are possible for a base station application. In this paper, designs of three types of base station antennas are achieved and some examples are shown. As for an array antenna, Butler matrix and Rotman lens are used for multi-beam circuit. As for a reflector antenna, an offset dual reflector configuration is employed. Reflector shaping method is shown. As for a dielectric lens antenna, lens shaping method is explained.","PeriodicalId":111726,"journal":{"name":"2018 IEEE International RF and Microwave Conference (RFM)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124645708","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: 4
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