Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888794
Y. Lee, K. Hsiao, Ling-Ting Chen, Wan-Ti Wang, Chien‐Jen Wang
A new design of the dual-band monopole antenna with the strip-line topology has been shown in this study. The dual-band characteristics are achieved using several strip monopole radiators. A small planar inverted-F monopole antenna (PIFMA) is connected to the ground plane. The bandwidth improvement for the antenna is obtained mainly by modifying the geometrical configuration of the strip monopoles added at the antenna and the ground plane. The measured results of the impedance-bandwidth are about 44 MHz (458 to 502 MHz) and 118 MHz (701 to 819 MHz).
{"title":"A dual-band multiple-strip monopole antenna","authors":"Y. Lee, K. Hsiao, Ling-Ting Chen, Wan-Ti Wang, Chien‐Jen Wang","doi":"10.1109/IWEM.2013.6888794","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888794","url":null,"abstract":"A new design of the dual-band monopole antenna with the strip-line topology has been shown in this study. The dual-band characteristics are achieved using several strip monopole radiators. A small planar inverted-F monopole antenna (PIFMA) is connected to the ground plane. The bandwidth improvement for the antenna is obtained mainly by modifying the geometrical configuration of the strip monopoles added at the antenna and the ground plane. The measured results of the impedance-bandwidth are about 44 MHz (458 to 502 MHz) and 118 MHz (701 to 819 MHz).","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124119481","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}
Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888765
Xiu Yin Zhang, Li Gao, Qing-Yi Guo, Q. Xue
This paper presents the discriminating coupling and its application to bandpass filter. According to the voltage current characteristic of the transmission lines, the fundamental mode or high-order mode can be suppressed by selecting suitable coupling region, whereas the coupling coefficient at desired frequency can be tuned to desired values. Therefore, it is easy to design wide-stopband or oversize bandpass filters. Furthermore, no additional circuit is needed. For demonstration purpose, two planar microstrip filters, and an oversize millimeter-wave filter are presented. The results are presented to verify the proposed method.
{"title":"Discriminating coupling and its application to bandpass filters","authors":"Xiu Yin Zhang, Li Gao, Qing-Yi Guo, Q. Xue","doi":"10.1109/IWEM.2013.6888765","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888765","url":null,"abstract":"This paper presents the discriminating coupling and its application to bandpass filter. According to the voltage current characteristic of the transmission lines, the fundamental mode or high-order mode can be suppressed by selecting suitable coupling region, whereas the coupling coefficient at desired frequency can be tuned to desired values. Therefore, it is easy to design wide-stopband or oversize bandpass filters. Furthermore, no additional circuit is needed. For demonstration purpose, two planar microstrip filters, and an oversize millimeter-wave filter are presented. The results are presented to verify the proposed method.","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127974371","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}
Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888761
S. Qu, X. Bai
This communication presents a novel and simple circularly polarized (CP) antenna constructed by an elliptical cavity and a dipole exciter for 60 GHz wireless personal area network (WPAN) applications. The simulated 3-dB axial ratio (AR) bandwidth is 27.1%, from 51 to 67 GHz, in which the standing-wave ratio (SWR) is kept below 2. Meanwhile, the broadside gain is varied from 5 to 10 dBi.
{"title":"Broadband millimeter-wave elliptical cavity-backed antenna for circularly polarized radiation","authors":"S. Qu, X. Bai","doi":"10.1109/IWEM.2013.6888761","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888761","url":null,"abstract":"This communication presents a novel and simple circularly polarized (CP) antenna constructed by an elliptical cavity and a dipole exciter for 60 GHz wireless personal area network (WPAN) applications. The simulated 3-dB axial ratio (AR) bandwidth is 27.1%, from 51 to 67 GHz, in which the standing-wave ratio (SWR) is kept below 2. Meanwhile, the broadside gain is varied from 5 to 10 dBi.","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115683396","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}
Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888759
Changrong Liu, Yong-xin Guo, S. Xiao
This paper presents two types of compact circularly polarized (CP) implantable antennas for Industrial, Scientific, and Medical (ISM) (2.4-2.48 GHz) biomedical applications. The simulated antenna performance inside a human body environment (one-layer skin) includes impedance bandwidth, axial ratio (AR) bandwidth, and radiation are compared and discussed. The dimensions of proposed CP patch antenna and helical antenna are 10×10×1.27 mm3 and π×(5.5)2×3.048 mm3, respectively. The performance of communication link between implantable antennas and external CP antenna and linearly polarized (LP) antenna is also discussed.
{"title":"Small circularly polarized implantable antennas","authors":"Changrong Liu, Yong-xin Guo, S. Xiao","doi":"10.1109/IWEM.2013.6888759","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888759","url":null,"abstract":"This paper presents two types of compact circularly polarized (CP) implantable antennas for Industrial, Scientific, and Medical (ISM) (2.4-2.48 GHz) biomedical applications. The simulated antenna performance inside a human body environment (one-layer skin) includes impedance bandwidth, axial ratio (AR) bandwidth, and radiation are compared and discussed. The dimensions of proposed CP patch antenna and helical antenna are 10×10×1.27 mm3 and π×(5.5)2×3.048 mm3, respectively. The performance of communication link between implantable antennas and external CP antenna and linearly polarized (LP) antenna is also discussed.","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115434966","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}
Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888757
Yijun Feng, Bo O. Zhu, H. Yuan, Junming Zhao, T. Jiang
Metamaterial allows tailoring its electromagnetic (EM) properties through careful design of the resonant inclusions, providing much advantage over normal material. In this presentation, we employ active elements into the metamaterial designs and demonstrate several EM wave absorbers based on the metamaterial concept that have controllable EM responses including tunable absorption band, switchable due-band absorption, and switchable operation between absorption and reflection. Both the design procedures and the EM performances will be presented and discussed. We believe these examples would bring significant ability of metamaterial for controlling EM wave propagation.
{"title":"Controllable metamaterial absorbers","authors":"Yijun Feng, Bo O. Zhu, H. Yuan, Junming Zhao, T. Jiang","doi":"10.1109/IWEM.2013.6888757","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888757","url":null,"abstract":"Metamaterial allows tailoring its electromagnetic (EM) properties through careful design of the resonant inclusions, providing much advantage over normal material. In this presentation, we employ active elements into the metamaterial designs and demonstrate several EM wave absorbers based on the metamaterial concept that have controllable EM responses including tunable absorption band, switchable due-band absorption, and switchable operation between absorption and reflection. Both the design procedures and the EM performances will be presented and discussed. We believe these examples would bring significant ability of metamaterial for controlling EM wave propagation.","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"274 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129941640","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}
Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888770
Lulu Wang, R. Simpkin, A. Al-Jumaily
This paper presents a two dimensional (2D) Holographic Microwave Imaging Array (HMIA) technique for early breast tumour detection and demonstrates its efficacy using experimental data. The system is designed for operation at a single frequency of 12.6 GHz, which includes one transmitter and an array of 15 receivers that is placed at a far-field under the breast phantom. The breast phantom consists of homogeneous normal breast tissue, a small malignant tumour and skin. The matching solution medium is not necessary in this system. Air is used between the antennas and breast phantom. The experimental results showed that small tumours (<;5 mm) at different locations could be successfully detected by using the proposed 2D HMIA technique.
{"title":"Holographic Microwave Imaging Array: Experimental investigation of breast tumour detection","authors":"Lulu Wang, R. Simpkin, A. Al-Jumaily","doi":"10.1109/IWEM.2013.6888770","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888770","url":null,"abstract":"This paper presents a two dimensional (2D) Holographic Microwave Imaging Array (HMIA) technique for early breast tumour detection and demonstrates its efficacy using experimental data. The system is designed for operation at a single frequency of 12.6 GHz, which includes one transmitter and an array of 15 receivers that is placed at a far-field under the breast phantom. The breast phantom consists of homogeneous normal breast tissue, a small malignant tumour and skin. The matching solution medium is not necessary in this system. Air is used between the antennas and breast phantom. The experimental results showed that small tumours (<;5 mm) at different locations could be successfully detected by using the proposed 2D HMIA technique.","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116293034","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}
Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888790
Chun-Lin Ciou, Wen‐Shan Chen
This paper proposed a bent dipole antenna with a spiral strip on the other side for dual band WLAN applications. The bent dipole structure keeps the antenna with compact size and operates the IEEE 802.11 b/g (2.4 ~ 2.484 GHz) application band. In addition, the spiral strip excites higher resonant modes for the purpose of 802.11a (5.1 ~ 5.825 GHz). Beside the dual band application, the overall dimensions 38 × 8 × 0.8 mm3 can be easily applied in small-size portable devices. The simulated radiation patterns reveal omni-directional patterns in the three operating bands.
{"title":"Dipole antenna with a spiral strip for WLAN applications","authors":"Chun-Lin Ciou, Wen‐Shan Chen","doi":"10.1109/IWEM.2013.6888790","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888790","url":null,"abstract":"This paper proposed a bent dipole antenna with a spiral strip on the other side for dual band WLAN applications. The bent dipole structure keeps the antenna with compact size and operates the IEEE 802.11 b/g (2.4 ~ 2.484 GHz) application band. In addition, the spiral strip excites higher resonant modes for the purpose of 802.11a (5.1 ~ 5.825 GHz). Beside the dual band application, the overall dimensions 38 × 8 × 0.8 mm3 can be easily applied in small-size portable devices. The simulated radiation patterns reveal omni-directional patterns in the three operating bands.","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123707017","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}
Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888777
Zhengyu Sun, Yuepeng Yan
This paper presents a broadband image-reject mixer consisting of a wideband image reject mixer with active baluns. A switched transconductor mixer embedded with an active balun for the local oscillator (LO) signal is designed. An active balun for RF input signal with a RC parallel network to reduce gain and phase imbalance is proposed. Implemented in a 0.5μm InGaAs E-mode pHEMT, the mixer can achieve conversion gain of 9 dB, image rejection of 32 dBc, single sideband noise figure of 13 dB, and third-order input intercept point (IIP3) of 9 dBm over the entire frequency range of 0.5 to 5.5 GHz.
{"title":"A broadband pHEMT image-reject mixer","authors":"Zhengyu Sun, Yuepeng Yan","doi":"10.1109/IWEM.2013.6888777","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888777","url":null,"abstract":"This paper presents a broadband image-reject mixer consisting of a wideband image reject mixer with active baluns. A switched transconductor mixer embedded with an active balun for the local oscillator (LO) signal is designed. An active balun for RF input signal with a RC parallel network to reduce gain and phase imbalance is proposed. Implemented in a 0.5μm InGaAs E-mode pHEMT, the mixer can achieve conversion gain of 9 dB, image rejection of 32 dBc, single sideband noise figure of 13 dB, and third-order input intercept point (IIP3) of 9 dBm over the entire frequency range of 0.5 to 5.5 GHz.","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126128253","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}
Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888803
Lei Ge, K. Luk
A novel reconfigurable directed dipole antenna operated in a wideband or four narrowband modes is presented. The wideband mode (0.83-2.5 GHz) is based on a folded bowtie dipole while the four narrowband modes are based on a length-reconfigurable thin dipole backed by a rectangular cavity. PIN diodes are used as switches at specific locations for choosing different modes. A fully functional prototype is developed and exhibits good performance. The antenna can achieve well-controlled unidirectional radiation patterns and is potentially suitable for cognitive radio.
{"title":"A band-reconfigurable directed dipole antenna","authors":"Lei Ge, K. Luk","doi":"10.1109/IWEM.2013.6888803","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888803","url":null,"abstract":"A novel reconfigurable directed dipole antenna operated in a wideband or four narrowband modes is presented. The wideband mode (0.83-2.5 GHz) is based on a folded bowtie dipole while the four narrowband modes are based on a length-reconfigurable thin dipole backed by a rectangular cavity. PIN diodes are used as switches at specific locations for choosing different modes. A fully functional prototype is developed and exhibits good performance. The antenna can achieve well-controlled unidirectional radiation patterns and is potentially suitable for cognitive radio.","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125384142","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}
Pub Date : 2013-08-01DOI: 10.1109/IWEM.2013.6888804
Shaobo Chen, H. Lai, K. Luk
A thorough comparison between the conventional microstrip circularly polarized (CP) patch antenna and the slot-tail compact one is given in this paper. By fixing the patch areas to be the same, radiation performance for these two antennas could be directly compared. Simulated results show that the slot-tail compact design does not give valuable improvements in performance compared with the traditional design. With this result in mind, the authors conclude that the miniaturization trend for CP patch antenna should be application-oriented, which means the system requirement for the CP antenna should come first. The merit of the slot-tail compact design is being flexible in the size of the whole antenna and it could be treated as a scheme for portable communication equipment.
{"title":"Comparison study between conventional circularly polarized patch antenna and the slot-tail compact design","authors":"Shaobo Chen, H. Lai, K. Luk","doi":"10.1109/IWEM.2013.6888804","DOIUrl":"https://doi.org/10.1109/IWEM.2013.6888804","url":null,"abstract":"A thorough comparison between the conventional microstrip circularly polarized (CP) patch antenna and the slot-tail compact one is given in this paper. By fixing the patch areas to be the same, radiation performance for these two antennas could be directly compared. Simulated results show that the slot-tail compact design does not give valuable improvements in performance compared with the traditional design. With this result in mind, the authors conclude that the miniaturization trend for CP patch antenna should be application-oriented, which means the system requirement for the CP antenna should come first. The merit of the slot-tail compact design is being flexible in the size of the whole antenna and it could be treated as a scheme for portable communication equipment.","PeriodicalId":119627,"journal":{"name":"2013 IEEE International Workshop on Electromagnetics, Applications and Student Innovation Competition","volume":"412 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124410615","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：