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Differential Evolution algorithm for linear frequency modulation radar signal denoising 线性调频雷达信号去噪的差分进化算法
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 2013-04-01 DOI: 10.1109/RFM.2013.6757256
M. Al-Dabbagh, R. R. Abdullah, R. D. Al-Dabbagh, F. Hashim
{"title":"Differential Evolution algorithm for linear frequency modulation radar signal denoising","authors":"M. Al-Dabbagh, R. R. Abdullah, R. D. Al-Dabbagh, F. Hashim","doi":"10.1109/RFM.2013.6757256","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757256","url":null,"abstract":"Signal denoising is directly related to sample estimation of received signals, either by estimating the equation parameters for the target reflections or the surrounding noise and clutter accompanying the data of interest. Radar signals recorded using analogue or digital devices are not immune to noise. Random or white noise with no coherency is mainly produced in the form of random electrons, and caused by heat, environment, and stray circuitry loses. These factors influence the output signal voltage, thus creating detectable noise. Differential Evolution (DE) is an effectual, competent, and robust optimisation method used to solve different problems in the engineering and scientific domains, such as in signal processing. This paper looks at the feasibility of using the differential evolution algorithm to estimate the linear frequency modulation received signal parameters for radar signal denoising. The results gave high target recognition and showed feasibility to denoise received signals.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128519895","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 study on aperture slot size effect to wide band open air gap RLSA performance 孔径大小对宽带开口气隙RLSA性能影响的研究
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 1900-01-01 DOI: 10.1109/RFM.2013.6757249
I. Ibrahim, T. A. Rahman, M. Sabran
{"title":"A study on aperture slot size effect to wide band open air gap RLSA performance","authors":"I. Ibrahim, T. A. Rahman, M. Sabran","doi":"10.1109/RFM.2013.6757249","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757249","url":null,"abstract":"Radial Line Slot Array Antenna is a slot planar antenna. The slot has been arranged radially to create a concentration of wave into a single point. A slot implemented in RLSA is a rectangular aperture type. Most of the researchers in this field used 1mm slot width with half wavelength on the slot length. From the theory, the wider slot width will allow more current flow thus enhanced the antenna performance. This research is studying the effect of slot width to the Radial Line Slot Array Antenna (RLSA). From the simulation and measurement, it is found that the slot width has improved 1dBi gain, 9dB back lobe ratio and the shape of radiation pattern shape.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117332867","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
Square-shaped phase shifter using multilayer technology for ultra wideband application 采用多层技术的方形移相器用于超宽带应用
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 1900-01-01 DOI: 10.1109/RFM.2013.6757209
D. Zaidel, S. Rahim, R. Dewan, S. F. Ausordin, B. M. Saad
{"title":"Square-shaped phase shifter using multilayer technology for ultra wideband application","authors":"D. Zaidel, S. Rahim, R. Dewan, S. F. Ausordin, B. M. Saad","doi":"10.1109/RFM.2013.6757209","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757209","url":null,"abstract":"A design of 45° phase shifter which operates at ultra wideband (UWB) operating frequency is presented in this paper. The design employs multilayer technology to achieve a broad coupling and compact size. The simulation result shows that the proposed phase shifter is acceptable to be used for UWB application. Parametric analysis on the dimension of the square patch will be carried out to observe the performance of the phase shifter.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134369100","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
A dual-band microstrip filter topology based on quarter-wavelength coupled-lines inter-connections 一种基于四分之一波长耦合线互连的双带微带滤波器拓扑结构
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 1900-01-01 DOI: 10.1109/RFM.2013.6757243
M. K. Khalid, M. Salleh, M. I. M. Saleh, S. K. M. Khanfar, Z. I. Khan, N. A. Wahab
{"title":"A dual-band microstrip filter topology based on quarter-wavelength coupled-lines inter-connections","authors":"M. K. Khalid, M. Salleh, M. I. M. Saleh, S. K. M. Khanfar, Z. I. Khan, N. A. Wahab","doi":"10.1109/RFM.2013.6757243","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757243","url":null,"abstract":"A dual-band bandpass filter topology based on coupled-lines is presented. In the topology, two identical coupledlines are cascaded in series and duplicated in parallel. There are then ended with another two identical coupled-lines. The dual-path structure exhibits a 2nd order dual-band response with three transmission zeros that separate the passbands from each other, and from the rejection band. The odd- and even-mode impedances of the coupled-lines control the bandwidth, passband and out-of-band responses of the dual-band filter. Finally, to verify the concept, a prototype of a dual-band bandpass filter is designed using EM simulator, fabricated on 1.6-mm-thick FR-4 substrate and measured. The resonant frequencies of the two passbands are centered at 1.82 GHz and 2.38 GHz.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"516 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132996047","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
Reduced-size witricity charger design and its parametric study 小型化充电机设计及参数化研究
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 1900-01-01 DOI: 10.1109/RFM.2013.6757290
M. Salleh, N. Seman, R. Dewan
{"title":"Reduced-size witricity charger design and its parametric study","authors":"M. Salleh, N. Seman, R. Dewan","doi":"10.1109/RFM.2013.6757290","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757290","url":null,"abstract":"Wireless electricity (Witricity) application is recently gaining interest owing to its effectiveness and reliability in mid-range wireless power transfer (WPT). This paper presents a parametric study on Witricity design in order to achieve a good coupling efficiency in term of S21 at the targeted frequency. The dimension of the design is 80 mm × 80 mm, which offer 75% size reduction compared to previous design of 161 mm × 161 mm. The results show that it is possible to compute the resonance frequency by varying the thickness of the substrate, dimension of the capacitors and the number of turns at transmitter and receiver side.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132288102","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
The screening of human psychological stress using Resonant Field Imaging (RFI) frequency counter 利用共振场成像(RFI)频率计数器筛选人的心理压力
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 1900-01-01 DOI: 10.1109/RFM.2013.6757289
Nurul Iwani Abdullah, O. C. Bakar, Ainsah Omar, Z. H. Murat, M. Selamat
{"title":"The screening of human psychological stress using Resonant Field Imaging (RFI) frequency counter","authors":"Nurul Iwani Abdullah, O. C. Bakar, Ainsah Omar, Z. H. Murat, M. Selamat","doi":"10.1109/RFM.2013.6757289","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757289","url":null,"abstract":"The aim of the study was to screen the human psychological stress using Resonant Field Imaging (RFI) frequency counter. A cross-sectional study was conducted on 141 physically healthy participants. The body radiation frequencies were measured using RFI frequency counter at the frontal region. Participants were then required to complete the three validated questionnaires that served as the gold standard of stress i.e. Kessler Psychological Distress Scale (K10), General Health Questionnaire 12 (GHQ-12) and Hospital Anxiety and Depression Scale (HADS). Scatter plots and Pearson Correlation analysis were done to find any associations between the body radiation frequencies and the total scores of the questionnaires. The results from this study showed that there were weak correlations between body radiation frequencies at frontal region with K10, HADS-Anxiety, HADS-Depression and GHQ-12. These findings suggest that RFI frequency counter has a potential to be used as a screening tool in detecting psychological stress.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115504293","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
Design and analysis of wideband 3 and 6 dB coupled-line coupler with different grounding techniques 不同接地技术下宽带3和6db耦合线耦合器的设计与分析
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 1900-01-01 DOI: 10.1109/RFM.2013.6757212
K. H. Yusof, N. Seman, M. Jamaluddin
{"title":"Design and analysis of wideband 3 and 6 dB coupled-line coupler with different grounding techniques","authors":"K. H. Yusof, N. Seman, M. Jamaluddin","doi":"10.1109/RFM.2013.6757212","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757212","url":null,"abstract":"This paper presents the design and analysis of three coupled-line couplers with different grounding techniques, which are common, slotted and floating-potential ground plane. The coupler designs are based on 3 and 6 dB coupling coefficient with center frequency of 6.5 GHz. Their wideband performance are compared and analyzed to observe the effect of grounding techniques. The simulation and analysis are performed using CST Microwave Studio software.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132774169","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
User's mobility history-based mobility prediction in LTE femtocells network LTE 毫微微蜂窝网络中基于用户移动历史的移动预测
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 1900-01-01 DOI: 10.1109/RFM.2013.6757228
Nurul Ain Amirrudin, S. Ariffin, N. N. N. A. Malik, N. E. Ghazali
{"title":"User's mobility history-based mobility prediction in LTE femtocells network","authors":"Nurul Ain Amirrudin, S. Ariffin, N. N. N. A. Malik, N. E. Ghazali","doi":"10.1109/RFM.2013.6757228","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757228","url":null,"abstract":"Seamless and fast handover is one of main goals in Long Term Evolution (LTE) in supporting mobility and maintaining user's quality of services. Mobility prediction is a technique to identify future targeted base station in advance, to reduce handover latency, and finally to enhance handover performance in wireless networks. In this paper, mobility prediction via Markov Chains with an input of user's mobility history is proposed as a technique to predict the user's movement in femtocells deployment. The results show that our proposed method predicts better when random data is 50% and above compared to the existing method. We had also analysed the effect of unavailable base station to the accuracy of the prediction in our proposed method. From the analysis, it is found that, the length of time collecting the data for the database effect the prediction accuracy in certain duration.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129224203","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: 41
Dual-grid BoR-FDTD technique applied for prime feed antenna study 双栅格BoR-FDTD技术在主馈源天线中的应用研究
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 1900-01-01 DOI: 10.1109/rfm.2013.6757297
{"title":"Dual-grid BoR-FDTD technique applied for prime feed antenna study","authors":"","doi":"10.1109/rfm.2013.6757297","DOIUrl":"https://doi.org/10.1109/rfm.2013.6757297","url":null,"abstract":"This paper presents some studies on prime feed reflector antennas system using the dual-grid BoR-FDTD approach. The technique requires two consecutive simulation steps, where the stored data from the first simulation can be repeatedly used in the second simulation domain. This offers fast parametric study involving the feed structure to study its effect on overall antenna performance. Based on this study, antenna gain could drop by more than 1 dB if the feed position shifted > 0.5λ0 from the reflector's focal point. The blockage due to feed structure does not significantly affect the radiation pattern performance for parabolic reflector system. However, for spherical reflector, the blockage effect is much notable.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121340016","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
Optical generation of 60-GHz signal for millimeter wave wireless communication 光产生60ghz信号，用于毫米波无线通信
2013 IEEE International RF and Microwave Conference (RFM) Pub Date : 1900-01-01 DOI: 10.1109/RFM.2013.6757301
N. A. Mohammed, S. Hassan, F. Malek, R. Ngah, S. A. Abbas
{"title":"Optical generation of 60-GHz signal for millimeter wave wireless communication","authors":"N. A. Mohammed, S. Hassan, F. Malek, R. Ngah, S. A. Abbas","doi":"10.1109/RFM.2013.6757301","DOIUrl":"https://doi.org/10.1109/RFM.2013.6757301","url":null,"abstract":"In this paper, a quadruple-frequency optical millimeter-wave (mmW) signal generation using an integrated dual-parallel MZM (IDP-MZM) is presented. With properly adjusting the phase delay, biasing, and modulation index, an optical mmW signal at 60-GHz with an Optical Sideband Suppression Ratio (OSSR) up to 28 dB is obtained through simulation. The Radio Frequency Spurious Suppression Ratio (RFSSRR) is 32.2 dB. Furthermore, the impact of non-ideal MZM on RFSSRR is studied through simulation. Although a large modulation index is utilised to achieve frequency quadrupling, the simplicity and high quality have made this scheme a viable solution for mmW wireless communication networks.","PeriodicalId":187090,"journal":{"name":"2013 IEEE International RF and Microwave Conference (RFM)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125713341","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: 6
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