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2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition最新文献

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Microstrip patch antennas with vertical polarization 垂直极化微带贴片天线
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320338
Q. Xue
{"title":"Microstrip patch antennas with vertical polarization","authors":"Q. Xue","doi":"10.1109/IWEM.2012.6320338","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320338","url":null,"abstract":"Summary form only given. A category of new microstrip patch antennas with very low profile, wide bandwidth and, most importantly, vertical polarization are developed. A monopolar microstrip circular patch antenna that has a monopole like radiation pattern is proposed. The monopolar patch antenna can produce a conical radiation pattern in the elevation pattern and an omnidirectional pattern in the horizontal plane, like a monopole antenna. The monopolar circular patch antenna has a potential to replace the conventional monopole antenna for the circumstances that require an antenna with very low profile and vertical polarization. A microstrip rectangular patch antenna with high gain and vertically polarized radiation at endfires is also presented. The rectangular patch antenna produces a monopole like radiation pattern in the main elevation plane and an “8”-shaped radiation pattern in the horizontal plane. Furthermore, a microstrip magnetic dipole Yagi antenna with an even higher gain and a high front to back ratio is presented. The Yagi antenna produces a main beam radiating very close to forward endfire and a vertical polarization at the endfire.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133878663","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-gain circularly-polarized dual-band antenna array for RFID reader applications 一种适用于RFID阅读器的高增益圆极化双频天线阵列
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320353
Ting-Jui Huang, H. Hsu
{"title":"A high-gain circularly-polarized dual-band antenna array for RFID reader applications","authors":"Ting-Jui Huang, H. Hsu","doi":"10.1109/IWEM.2012.6320353","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320353","url":null,"abstract":"In this paper, we propose a high-gain circularly-polarized (CP) dual-band antenna array for UHF (902-928 MHz) and microwave band (2.4-2.5 GHz) RFID applications. The proposed antenna consists of dual-ring radiators excited through apertures as the basic element. A 2-by-2 array formed by sequentially-rotated configuration exhibited 8 dBic gain at UHF band and 10 dBic gain at microwave band. Very good CP performance with axial ratio less than 1 dB was achieved at both bands.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122002118","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
Small-size slot antenna for seven-band LTE/WWAN mobile phone operation 用于七波段LTE/WWAN移动电话操作的小尺寸槽天线
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320363
Chuan-Qiu Lei, Y. Ban, Jin-hua Chen, J. L. Li
{"title":"Small-size slot antenna for seven-band LTE/WWAN mobile phone operation","authors":"Chuan-Qiu Lei, Y. Ban, Jin-hua Chen, J. L. Li","doi":"10.1109/IWEM.2012.6320363","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320363","url":null,"abstract":"A promising printed slot antenna for seven-band operation applied in the mobile phone has been proposed, covering GSM850/900/ DCS1800/PCS1900/UMTS2100/LTE2300/2500. The antenna comprises an inverted-L-shaped slot and three open-ended monopole slots, which are integrated into a compact configuration to occupy a small area of 15×40 mm2 in the back side of the system circuit board. A 50-Ω microstrip feed line is conducted to excite the antenna, which is printed on the top side of the PCB. The proposed antenna is tested, and good radiation performances are obtained.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124092256","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
Design of an H-shape cross slotted aperture-coupled microstrip patch antenna 一种h型交叉开槽耦合微带贴片天线设计
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320355
Mingqiang Bai, Jun Xing, Zhi-gang Wang, B. Yan
{"title":"Design of an H-shape cross slotted aperture-coupled microstrip patch antenna","authors":"Mingqiang Bai, Jun Xing, Zhi-gang Wang, B. Yan","doi":"10.1109/IWEM.2012.6320355","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320355","url":null,"abstract":"An H-shaped cross slotted aperture-coupled microstrip patch antenna with double-sided notches is presented. By proper choice of the notch dimensions, aperture size and foam material height, a wide band and high gain operation could be realized. The impedance bandwidth (based on a -10 dB return loss) of the designed antenna reaches about 12.5%. The maximum gain of the antenna is 9.35dBi, and the whole antenna is about 220mm*210mm*30mm.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123402282","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: 8
Characteristic Basis Function Method for scattering from multiple bodies of revolution 多公转体散射的特征基函数法
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320349
Yu-ke Li, Jun Hu, X. Rui, Wenchun Lu
{"title":"Characteristic Basis Function Method for scattering from multiple bodies of revolution","authors":"Yu-ke Li, Jun Hu, X. Rui, Wenchun Lu","doi":"10.1109/IWEM.2012.6320349","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320349","url":null,"abstract":"Although the Method of Moment(MoM) for Bodies of Revolution(BoR) to solve the electromagnetic scattering and radiation problems has been studied for several decades. The research of scattering from Multi-BoR is merely referred.For the purpose of solve scattering from Multi-BoR efficiently a method combine the traditional BoR-MoM with Characteristic Basis Function Method is developed in this paper. Some numerical results are given to demonstrate the validity and accuracy of this method.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123842961","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 dual core wideband CMOS LC VCO with low tuning sensitivity 具有低调谐灵敏度的双核宽带CMOS LC压控振荡器
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320372
Ting Wu, Guiliang Guo, Yuepeng Yan
{"title":"A dual core wideband CMOS LC VCO with low tuning sensitivity","authors":"Ting Wu, Guiliang Guo, Yuepeng Yan","doi":"10.1109/IWEM.2012.6320372","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320372","url":null,"abstract":"A dual core wideband CMOS LC VCO has been designed and fabricated in TSMC 0.25μm RF CMOS 1P5M process. Using a combination of a switched capacitor array and a switched varactor array, this VCO achieves a frequency tuning rang of 800MHz to 1730MHz with a control voltage varying from 0.2V-2.2V, while maintaining a tuning sensitivity of less than 50MHz/V.The measured single-side phase noise is -120dBc/Hz at a 1MHz offset from a 1060MHz carrier when the VCO core is drawing 8mA from a 2.5V supply.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124698200","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
Time-modulated array design for new generation communication systems 新一代通信系统时调阵列设计
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320328
P. Rocca, L. Poli, M. D'Urso, A. Massa
{"title":"Time-modulated array design for new generation communication systems","authors":"P. Rocca, L. Poli, M. D'Urso, A. Massa","doi":"10.1109/IWEM.2012.6320328","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320328","url":null,"abstract":"Time modulated arrays (TMA) use radio-frequency (RF) switches to modulate in time the static excitation weights of an ordinary phased array to shape the antenna radiation diagram. The on-off commutation of the switches, which are controlled by means of a periodic pulse sequence, generates harmonics that are spaced in frequency by multiple of the pulse repetition frequency. These harmonics, whether filtered, represent a power loss that unavoidably reduces the directivity at the antenna operating frequency. Differently, in this work the harmonics are suitably exploited and the pulse sequence controlling the RF switches is optimized to design an antenna able to generate multiple harmonic beams pointing at different directions in order to independently receive the signals that are incident on the array. Representative numerical examples are reported to validate the effectiveness of the approach.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122496562","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
The new design of miniaturized dual-band 180° hybrid-ring coupler 小型化双频180°混合环耦合器的新设计
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320370
Jun Xing, Mingqiang Bai, Pengcheng Li, Deqiang Yang, Jin Pan
{"title":"The new design of miniaturized dual-band 180° hybrid-ring coupler","authors":"Jun Xing, Mingqiang Bai, Pengcheng Li, Deqiang Yang, Jin Pan","doi":"10.1109/IWEM.2012.6320370","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320370","url":null,"abstract":"A dual-band hybrid-ring coupler made-fed by microstrip lines was designed based on the cyclic characteristic of hybrid-race conventional form. Using compact folded and coupled transmission lines, the model was miniaturized and the bandwidth was significantly broaden. The design idea is hoped to be applied for dual-band. Then measurement result was presented. It can be kept a perfect consistency with the simulation result.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134108074","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
An isotropic PML for the FDTD solver FDTD求解器的各向同性PML
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320346
Yu-xian Zhang, Hong-xing Zheng
{"title":"An isotropic PML for the FDTD solver","authors":"Yu-xian Zhang, Hong-xing Zheng","doi":"10.1109/IWEM.2012.6320346","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320346","url":null,"abstract":"An isotropic perfectly matched layer is proposed in this paper, which is used in truncating boundary around computational region. Making use of refraction enhancement scheme in optics, we get a matching medium layer named as anti-reflection. It is capable of propagating the wave through the imaginary medium completely. Numerical experiment has been proved that the method is efficient by applying to the finite-difference time-domain solver.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134449569","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
An antipodal vivaldi antenna for ultra wideband medical imaging system 一种用于超宽带医学成像系统的对映维瓦尔第天线
2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition Pub Date : 2012-10-04 DOI: 10.1109/IWEM.2012.6320350
Chao Li, Xianqi Lin, Pengju Tang, Shangbang Luo
{"title":"An antipodal vivaldi antenna for ultra wideband medical imaging system","authors":"Chao Li, Xianqi Lin, Pengju Tang, Shangbang Luo","doi":"10.1109/IWEM.2012.6320350","DOIUrl":"https://doi.org/10.1109/IWEM.2012.6320350","url":null,"abstract":"An Antipodal Vivaldi Antenna to be used in ultra wideband Medical imaging system is presented in this paper. A new high order power exponential function was used in the design of the proposed antenna, and the measurements showed that the in-band return loss is below -10 dB from 1GHz to12GHz. The experimental result indicates that the antenna is capable of sending and receiving very narrow pulse, which be used in Medical imaging system.","PeriodicalId":314019,"journal":{"name":"2012 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128387158","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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