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Sensor-integrated low-profile antenna design for multipath and blockage rich propagation environment 多径、多阻塞传播环境下传感器集成低轮廓天线设计
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757248
Huai-Sheng Wang, Wen-Jiao Liao, Chang-Fa Yang, Chen-Hao Hsu, Tsung-Wei Lien, C. Nien
{"title":"Sensor-integrated low-profile antenna design for multipath and blockage rich propagation environment","authors":"Huai-Sheng Wang, Wen-Jiao Liao, Chang-Fa Yang, Chen-Hao Hsu, Tsung-Wei Lien, C. Nien","doi":"10.1109/RFM.2013.6757248","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757248","url":null,"abstract":"Due to the growing demand for business-to-customer delivery on perishable goods, a novel business model has been devised to send temperature sensitive goods to the general public without refrigerated trucks. Packages are placed in thermal insulated containers instead, while the temperature is constantly monitored by wireless sensors. Because the cargo space is full of lossy materials, the sensor-integrated antenna is designed to provide radiations in a waveguide-like propagation environment. A low-profile dipole antenna configuration is adopted. Simulation and measurement results demonstrate the proposed conformal antenna can provide the required radiation patterns with decent gains and efficiencies.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130747176","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
Tradeoff analysis for vertical handover between UMTS-WiFi enhanced by IEEE802.21 IEEE802.21增强UMTS-WiFi垂直切换的权衡分析
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757237
Abedelaziz Khalil, Nasim Hamaydeh, S. Bali, L. Arafeh
{"title":"Tradeoff analysis for vertical handover between UMTS-WiFi enhanced by IEEE802.21","authors":"Abedelaziz Khalil, Nasim Hamaydeh, S. Bali, L. Arafeh","doi":"10.1109/RFM.2013.6757237","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757237","url":null,"abstract":"Mobile communication systems are equipped with multiple network interfaces. Wireless Fidelity (WiFi) and 3rd Generation (3G) are the most widely implemented interfaces in the latest mobile communication devices and therefore being able to fulfil most of the computing aspects. Nowadays, most modern mobile devices suffer from the interoperability between the WiFi and 3G interfaces, each access technology serves the user independently and therefore these technologies suffer the lack of interworking mechanisms and service continuity. In this paper, we carried out an intensive simulation analysis for the integration between WiFi from the 802 family of standards and UMTS as 3G cellular network. This integration is enhanced by IEEE802.21 standard that facilitates handover between heterogeneous networks by presenting media independent handover (MIH) reference models for different link layers technologies. The main objective is to study the impact of the mobile node speeds and applications bitrates on the key performance metrics in vertical handover scenarios. This study will present the importance of considering the mobile node speeds and applications bitrates in the vertical handover scenarios by observing the behavior of the performance metrics that affect the Quality of Service (QoS). In the proposed vertical handover scenarios, the recommended range of speeds and bitrates were precisely identified according to the acceptable values of the performance metrics defined by International Telecommunication Union - Telecommunication (ITU-T).","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123872180","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
Scintillation measurement on Ku-band satellite path in tropical climate 热带气候下ku波段卫星路径的闪烁测量
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757244
H. Dao, Islam Md Rafiqul, J. Chebil, K. Al-Khateeb
{"title":"Scintillation measurement on Ku-band satellite path in tropical climate","authors":"H. Dao, Islam Md Rafiqul, J. Chebil, K. Al-Khateeb","doi":"10.1109/RFM.2013.6757244","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757244","url":null,"abstract":"Scintillation data was collected in Kuala Lumpur, Malaysia for one year measurement. The data were obtained from MEASAT3 satellite operating at Ku-band with elevation angle of 77.4 . In this paper, scintillation statistics are analysed in dry (non-rain) condition. The scintillation distributions are represented scintillation intensity and amplitude by monthly, seasonal, worst-month and annual distributions. Probability density function (PDF) of scintillation intensity correspondingly agrees to Generalize Extreme Value (GEV) fit. In addition, model validation to the measured data is also provided.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122628645","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
Parametric effect of defected ground structure (DGS) on frequency of a bandpass filter 缺陷接地结构(DGS)对带通滤波器频率的参数影响
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757245
Muhammad Tahir Khan, M. A. Zakariya, M. Saad, Z. Baharudin, M. Rehman
{"title":"Parametric effect of defected ground structure (DGS) on frequency of a bandpass filter","authors":"Muhammad Tahir Khan, M. A. Zakariya, M. Saad, Z. Baharudin, M. Rehman","doi":"10.1109/RFM.2013.6757245","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757245","url":null,"abstract":"A stepped impedance resonator bandpass filter (SIR BPF) is proposed and designed by placing defected ground structure (DGS) in the ground plane. DGS is used for its property of miniaturizing the size of microwave filter and also improving the mutual coupling between the resonators. The proposed dumbbell shaped DGS is used to tune the bandpass filter to 2.4 GHz with dimension of 28 mm × 30 mm. A wide tuning range of 0.64 GHz is achieved by tuning the height, length and width dimension of DGS unit cell. This filter gives an insertion loss of -0.23 dB, a return loss of -38.03 dB and -3 dB bandwidth of 0.56 GHz. The tuning of SIR bandpass filter, using DGS structure parameters is discussed here. Moreover, the effect of different parameters of DGS on center frequency is shown and discussed with results.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131493159","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: 5
Water-holding capacity assessment of meat using an electromagnetic sensing method 用电磁传感方法评价肉类的持水能力
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757207
B. Abdullah, A. Mason, J. Cullen, A. Al-Shamma'a
{"title":"Water-holding capacity assessment of meat using an electromagnetic sensing method","authors":"B. Abdullah, A. Mason, J. Cullen, A. Al-Shamma'a","doi":"10.1109/RFM.2013.6757207","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757207","url":null,"abstract":"The loss of water from fresh meat (drip loss) has a considerable influence on its properties. High drip loss will affect both the yield and quality of meat. It may lead to a large reduction in financial output, nutritional value as well as consumer appeal. Water-holding capacity (WHC) is the ability of muscle to retain naturally occurring moisture in meat. Current methods used to estimate WHC of postmortem muscle by means of measuring drip loss are time-consuming. This paper highlights current methods used to measure WHC and drip loss in meat. The paper will also present a novel method to measure drip loss and hence determine WHC using a microwave cavity. The cavity is first modelled using Ansys High Frequency Structure Simulator (HFSS). The cavity is then constructed, tested and evaluated in LJMU laboratories. The results obtained using different types of meat such as; pork, chicken, beef and lamb are presented and discussed in this paper. The results indicate that determination of WHC using microwave spectroscopy is a promising alternative to the existing methods.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127223739","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: 5
Embroidery Wearable Snail Antenna (EWSA) design 刺绣可穿戴蜗牛天线(EWSA)设计
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757223
N. Ishak, M. Jamlos, M. A. Jamlos, S. Ahmad, M. Karim
{"title":"Embroidery Wearable Snail Antenna (EWSA) design","authors":"N. Ishak, M. Jamlos, M. A. Jamlos, S. Ahmad, M. Karim","doi":"10.1109/RFM.2013.6757223","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757223","url":null,"abstract":"The proposed Embroidery Wearable Snail Antenna (EWSA) is capable for dual-band operation which is 1.575 GHz for GPS application and 1.8 GHz for GSM application. The EWSA is basically designed in circle shape at the centre but then subtracted by square shape at the upper and bottom. In seeking good results, the optimization process is compulsory where the width of squares hold the key of dual band frequencies and good gain values. The gain produced is as high as 6.649 dB and 7.826 dB is obtained at the frequency of 1.575 GHz and 1.8 GHz correspondingly. Moreover, flexibility in structure enables the EWSA to be easily integrated into safety jackets and rain coats for tracking, search and rescue communication purposes.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124610354","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
Dielectric spectroscopy of pharmaceutical drug (Paracetamol) dosage in water 药物(扑热息痛)在水中剂量的介电光谱
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757295
E. Cheng, M. Fareq, F. Abdullah, F. H. Wee, S. F. Khor, Y. S. Lee, M. Afendi, M. Shukry, A. Shahriman, W. Khairunizanm, Z. Liyana
{"title":"Dielectric spectroscopy of pharmaceutical drug (Paracetamol) dosage in water","authors":"E. Cheng, M. Fareq, F. Abdullah, F. H. Wee, S. F. Khor, Y. S. Lee, M. Afendi, M. Shukry, A. Shahriman, W. Khairunizanm, Z. Liyana","doi":"10.1109/RFM.2013.6757295","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757295","url":null,"abstract":"This paper discuss about the dielectric measurement on different concentration of pharmaceutical drug using Agilent 85070E High-Temperature and Slim form probe. A microwave dielectric measurement is set up to measure dosage of drug in solution. It is well-known as non-destructive and rapid method. In this work, the drug used is paracetamol because it is a common consumed pharmaceutical drug by public as mild painkiller. The dielectric measurement was conducted on paracetamol from 200 MHz to 10 GHz. The solution of paracetamol was prepared in various concentrations (molarity). Solution with different concentration will exhibit different dielectric properties. A P-Series Network Analyzer (PNA) is used to measure the dielectric properties.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115147994","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: 10
Numerical radio propagation characterisation and system level modelling for ultra wideband on-body communications 超宽带体上通信的数值无线电传播特性和系统级建模
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757233
Q. Abbasi, Liaqat Ali, Masood Ur Rehman, S. Liaqat, A. Alomainy
{"title":"Numerical radio propagation characterisation and system level modelling for ultra wideband on-body communications","authors":"Q. Abbasi, Liaqat Ali, Masood Ur Rehman, S. Liaqat, A. Alomainy","doi":"10.1109/RFM.2013.6757233","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757233","url":null,"abstract":"In this paper a radio propagation studies in addition to system performance evaluation for ultra wideband (UWB) (3-10.6 GHz) frequencies is being presented based on parallel finite-difference time-domain technique. In an indoor environment, effect of human body postures on the propagation channel and system performance for body area network is being studied. Results show the dependence of propagation channel characteristic and system performance on the human subject postures. Therefore, careful consideration of postures in addition to subject are important for reliable radio channels and system performance.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123458882","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
Effects of electromagnetic radiations generated by mobile antennas on the human brain 移动天线产生的电磁辐射对人脑的影响
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757286
Moumen Cherif, B. Malek
{"title":"Effects of electromagnetic radiations generated by mobile antennas on the human brain","authors":"Moumen Cherif, B. Malek","doi":"10.1109/RFM.2013.6757286","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757286","url":null,"abstract":"Mobile telephony became an essential instrument in our everyday life, and with dimensions of more than 36 million mobile phones, one counts some 35000 basic antennas or stations, where the surrounding inhabitants worry about the consequences that they could have on health [1]-[2]. In this article, the dielectric human tissue properties and their evolution will be approached according to the variations of the frequency, as well as the resolution of the equations of Maxwell's in order to determine the expressions of the electromagnetic fields in the human body, thus broadcasting capacity of energy (RF) in the layers of the human head most exposed to these radiations, this by the observation of the variation of the power absorptive by tissue of the human head.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116579037","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
BCB-Si based antenna for millimeter wave applications 基于BCB-Si的毫米波天线
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-12-01 DOI: 10.1109/RFM.2013.6757220
H. Vettikalladi, N. Ashraf, M. Alkanhal
{"title":"BCB-Si based antenna for millimeter wave applications","authors":"H. Vettikalladi, N. Ashraf, M. Alkanhal","doi":"10.1109/RFM.2013.6757220","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757220","url":null,"abstract":"In this paper a benzocyclobutene (BCB) - silicon (Si) based wide band antenna for millimeter wave applications is presented. The antenna consists of multilayer with one layer of BCB and the remaining three layers of Si. The results of simulations show that the antenna provides an S11 <; -10 dB bandwidth of 9.7 GHz (17%) starting from 51.5 GHz to 61.2 GHz around 57 GHz central frequency. The antenna provides a maximum gain of 8.9dBi with an efficiency of 70%.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121781221","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
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