2020 IEEE International RF and Microwave Conference (RFM)最新文献

Split L-I square shaped compact metamaterial for Cube satellite applications 用于立方体卫星应用的分裂L-I方形致密超材料

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344765

Ahasanul Hoque, A. Almutairi, M. Baharuddin, N. Sahar, M. F. Mansor, Mohammad Tausiful Islam

引用次数: 0

On the Frequency Scaling of High Power CW Magnetrons 大功率连续波磁控管的频率标度研究

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344792

Aviraj R. Jadhav, J. John, K. Tuckley, P. Sharma, H. Dixit

引用次数: 0

Two-Stage Dickson Charge Pump Rectifier with Harmonics Suppression for 2.45 GHz WPT 两级Dickson电荷泵整流器与谐波抑制2.45 GHz WPT

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344769

L. Cheng, G. Gnanagurunathan

引用次数: 3

Performance Analysis of a Compact High Gain Antenna for RF Energy Harvesting in 1.71GHz to 12GHz 用于1.71GHz ~ 12GHz射频能量采集的紧凑型高增益天线性能分析

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344793

G. Srinivasu, T. Gayatri, D. Chaitanya, V. Sharma

引用次数: 1

Antenna and Radio Propagation Analysis in Several Dielectric Materials by EM Simulator 用电磁模拟器分析几种介质材料中的天线和无线电传播

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344789

Yoshihide Yamada, K. Kamardin, Nur Amalina Kamaruddin, Siti Harliza Mohd Razali, N. Zainudin, Ngu War Hlaing, H. Ja’afar

引用次数: 0

A Wideband Wearable Antenna Using Inverse Partial Ground Designed Using Characteristic Mode Analysis 利用特征模态分析设计逆部分地宽带可穿戴天线

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344791

Bashar Bahaa Qas Elias, P. Soh, A. A. Al-Hadi, S. Azemi

引用次数: 0

4×4 Element UWB Dual-Polarized Aperture Coupled Microstrip Patch Antenna Array for Chipless RFID 4×4元件超宽带双极化孔径耦合微带贴片天线阵列无芯片RFID

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344752

F. Babaeian, N. Karmakar

引用次数: 3

Non-Contact Respiration Rate Estimation using 24 GHz Pulse Radar Employing Envelope Detection 采用包络检测的24ghz脉冲雷达非接触呼吸速率估计

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344734

S. Zainuddin, N. E. Rashid, Khairul Khaizi Mohd Shariff, M. S. A. Megat Ali, F. Seman, I. Pasya

{"title":"Non-Contact Respiration Rate Estimation using 24 GHz Pulse Radar Employing Envelope Detection","authors":"S. Zainuddin, N. E. Rashid, Khairul Khaizi Mohd Shariff, M. S. A. Megat Ali, F. Seman, I. Pasya","doi":"10.1109/RFM50841.2020.9344734","DOIUrl":"https://doi.org/10.1109/RFM50841.2020.9344734","url":null,"abstract":"Recently, there are a lot of interest in utilizing radar technology to realize non-contact respiration rate (RR) measurements. This paper presents an RR estimation using a 24 GHz pulse radar employing an envelope detection on the IF signal at the receiver. Two methods of RR estimation methods were discussed: (1) a peak difference in the time domain, and (2) peak detection of the FFT spectrum of the receiving signal. The accuracy of the proposed method were investigated through from actual measurements of subjects breathing in front of the radar. Both methods were found to produce comparable accuracy RR estimation, however, using peak detection of the FFT spectrum marked slightly better accuracy. The measurement error was larger when using peak difference the time domain, due to measurement noises impacting the calculation of peak difference. The results of this paper indicated the workability of the proposed method, and hence developed a foundation of the non-contact RR estimation system to be implemented in various patient monitoring application with specific breathing conditions, such as acute breathing syndromes.","PeriodicalId":138339,"journal":{"name":"2020 IEEE International RF and Microwave Conference (RFM)","volume":"76 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116766941","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: 2

Influence of Pre-Sputtering Technique on Material Properties of BST Thin Films for Tunable Microwave Applications 预溅射技术对可调微波BST薄膜材料性能的影响

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344774

F. W. Jamaluddin, M. Khalid, A. Zoolfakar, M. H. Mamat, N. F. Mohd Nasir

{"title":"Influence of Pre-Sputtering Technique on Material Properties of BST Thin Films for Tunable Microwave Applications","authors":"F. W. Jamaluddin, M. Khalid, A. Zoolfakar, M. H. Mamat, N. F. Mohd Nasir","doi":"10.1109/RFM50841.2020.9344774","DOIUrl":"https://doi.org/10.1109/RFM50841.2020.9344774","url":null,"abstract":"This paper focuses on the influence of pre-sputtering process on the material properties of RF sputtered Barium Strontium Titanate (BST) thin films. Ba0.5Sr0.5TiO3 thin films were synthesized on sapphire substrates via RF magnetron sputtering system for 2-, 3- and 4-hour deposition time. The samples were then post-annealed for 2 hours at 900 °C in conventional furnace and characterized using x-ray diffraction (XRD), atomic force microscopy (AFM), field emission scanning electron (FESEM) and energy dispersive x-ray (EDX). The AFM analysis revealed that the BST thin film of the 4-hour deposition time produces rougher surface due to larger grain size. All the XRD patterns observed to have intense (110) peaks, indicating the preferred orientation of the BST thin films. From the FESEM results, it is observed that the 3-hour deposited sample is denser and uniform compared to its 2-hour counterpart. However, the 4-hour deposited sample shows a non-uniform film. EDX analysis showed that the elemental composition of the 4-hour deposited sample is the closest to the ideal atomic concentration (at. %) of the BST thin film.","PeriodicalId":138339,"journal":{"name":"2020 IEEE International RF and Microwave Conference (RFM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125625248","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

Electric Field Distributions of NMHA Inside and Outside of a Human Body Phantom 人体幻影内外NMHA的电场分布

2020 IEEE International RF and Microwave Conference (RFM) Pub Date : 2020-12-14 DOI: 10.1109/RFM50841.2020.9344777

Nur Amalina Kamaruddin, K. Kamardin, Yoshihide Yamada

{"title":"Electric Field Distributions of NMHA Inside and Outside of a Human Body Phantom","authors":"Nur Amalina Kamaruddin, K. Kamardin, Yoshihide Yamada","doi":"10.1109/RFM50841.2020.9344777","DOIUrl":"https://doi.org/10.1109/RFM50841.2020.9344777","url":null,"abstract":"In order to establish a communication link between a sensor inside of a human body to a receiver outside of the human body, electric field distribution performances of the antenna inside of the human body need to be clarified. A Normal Mode Helical Antenna (NMHA) is proposed as the antenna used for this research for the purpose of using it as the antenna for Wireless Capsule Endoscopy (WCE). In this paper, the performances of NMHA which are self-resonant structures, input resistance (Rin) and efficiency (n) are presented. The antenna is designed at frequency of 402 MHz. The designed NMHA is placed inside of human body phantom with permittivity (εr) of 11.6 F/m that represents fat layer. The conductivity (σ) of the phantom is from 0 to 1 S/m. The electric field distributions of NMHA inside the phantom are observed in details at σ equals to 0, 0.3 and 1 S/m. From the electric field distributions, propagation loss of signal (Lz) from NMHA across the human body phantom can be estimated. Calculation of electric field degradation is also presented in this paper. A half-wavelength dipole antenna is then added to the NMHA model to act as receiver to check NMHA's signal strength. The result is presented as S21.","PeriodicalId":138339,"journal":{"name":"2020 IEEE International RF and Microwave Conference (RFM)","volume":"31 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114006829","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