Pub Date : 2012-03-05DOI: 10.1109/IWAT.2012.6178421
A. Brizzi, A. Pellegrini, Y. Hao
An antenna for on-body applications based on a cylindrical resonator is presented in this paper. The antenna is designed to work at V-band, specifically in the unlicensed bandwidth around 60GHz.The resonant cavity is obtained by means of a woodpile Electronic Band Gap (EBG) structure made of alumina, and exhibits an omnidirectional radiation pattern on the plane normal to the cylinder axis. Such characteristic is extremely important for on-body application, since it improves the signal coverage of the human surface while reducing the energy lost in off-body radiation.
{"title":"Design of a cylindrical resonant cavity antenna for BAN applications at V band","authors":"A. Brizzi, A. Pellegrini, Y. Hao","doi":"10.1109/IWAT.2012.6178421","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178421","url":null,"abstract":"An antenna for on-body applications based on a cylindrical resonator is presented in this paper. The antenna is designed to work at V-band, specifically in the unlicensed bandwidth around 60GHz.The resonant cavity is obtained by means of a woodpile Electronic Band Gap (EBG) structure made of alumina, and exhibits an omnidirectional radiation pattern on the plane normal to the cylinder axis. Such characteristic is extremely important for on-body application, since it improves the signal coverage of the human surface while reducing the energy lost in off-body radiation.","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"37 1","pages":"152-155"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77577097","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 : 2012-03-05DOI: 10.1109/IWAT.2012.6178673
J. Iriarte, I. Ederra, R. Gonzalo, F. Monjas, S. Arenas, R. Manrique, A. Montesano, M. Díaz-Martín
Global transmission communication systems from geostationary orbit require compact and light antennas to reduce as much as possible the overall mass of the on flight configuration. Within the frame of the ESA project Compact Low-Mass Global Antennas, EADS CASA Espacio and the Public University of Navarra are developing a light and compact C-band antenna with dual circular polarization. The design of the antenna is based on flat planar technology, leading to two different lines of work. The first one consists in a low profile patch array while the other is based on Electromagnetic Band Gap (EBG) superstrate technology. Both configurations are studied and traded-off for single band working modes in C-band at 3.7 GHz. They are evaluated in terms of compactness, mass and RF performance. The array layout and beam forming network implementation are detailed, as well as the radiator and EBG superstrate selection.
来自地球静止轨道的全球传输通信系统需要紧凑和轻便的天线，以尽可能减少飞行配置的总体质量。在欧空局紧凑型低质量全球天线项目框架内，EADS CASA Espacio和纳瓦拉公立大学正在开发一种轻型紧凑型双圆极化c波段天线。天线的设计是基于平面技术，导致两种不同的工作路线。一种是低轮廓贴片阵列，另一种是基于电磁带隙(EBG)叠层技术。对这两种配置进行了研究，并在3.7 GHz的c波段进行了单频段工作模式的权衡。它们是根据紧凑性、质量和射频性能进行评估的。详细介绍了阵列布局和波束形成网络的实现，以及辐射体和EBG层的选择。
{"title":"Design of an EBG Compact Low-Mass Antenna in C-band with dual circular polarisation","authors":"J. Iriarte, I. Ederra, R. Gonzalo, F. Monjas, S. Arenas, R. Manrique, A. Montesano, M. Díaz-Martín","doi":"10.1109/IWAT.2012.6178673","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178673","url":null,"abstract":"Global transmission communication systems from geostationary orbit require compact and light antennas to reduce as much as possible the overall mass of the on flight configuration. Within the frame of the ESA project Compact Low-Mass Global Antennas, EADS CASA Espacio and the Public University of Navarra are developing a light and compact C-band antenna with dual circular polarization. The design of the antenna is based on flat planar technology, leading to two different lines of work. The first one consists in a low profile patch array while the other is based on Electromagnetic Band Gap (EBG) superstrate technology. Both configurations are studied and traded-off for single band working modes in C-band at 3.7 GHz. They are evaluated in terms of compactness, mass and RF performance. The array layout and beam forming network implementation are detailed, as well as the radiator and EBG superstrate selection.","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"156 1","pages":"307-310"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79874354","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 : 2012-03-05DOI: 10.1109/IWAT.2012.6178398
Z. Salmani, Changzhan Gu, H. Ren, Changzhi Li, Hualiang Zhang
This paper presents the design of Fermi antenna array with improved gain for radar respiration measurement. A six-element Fermi antenna array working at 5.8 GHz is optimally designed and integrated with the respiration radar system. Specifically, to easily feed the antenna array as well as reduce the total size of the array system, a feeding network based on 0-degree phase shifters is employed along with suitable impedance transformers. The whole system is proposed to function as a radar sensor for respiration rate measurement, which is known as a promising non-contact and non-invasive approach for lung cancer radiotherapy. The measurement results verify the improved performance of the proposed system for radar respiration measurement in motion-adaptive lung cancer radiotherapy.
{"title":"Application of fermi-antenna array for radar respiration measurement","authors":"Z. Salmani, Changzhan Gu, H. Ren, Changzhi Li, Hualiang Zhang","doi":"10.1109/IWAT.2012.6178398","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178398","url":null,"abstract":"This paper presents the design of Fermi antenna array with improved gain for radar respiration measurement. A six-element Fermi antenna array working at 5.8 GHz is optimally designed and integrated with the respiration radar system. Specifically, to easily feed the antenna array as well as reduce the total size of the array system, a feeding network based on 0-degree phase shifters is employed along with suitable impedance transformers. The whole system is proposed to function as a radar sensor for respiration rate measurement, which is known as a promising non-contact and non-invasive approach for lung cancer radiotherapy. The measurement results verify the improved performance of the proposed system for radar respiration measurement in motion-adaptive lung cancer radiotherapy.","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"99 1","pages":"60-63"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81583608","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 : 2012-03-05DOI: 10.1109/IWAT.2012.6178682
S. Pan, L. Gilreath, P. Heydari, F. Capolino
The paper presents several feasible millimeter wave on-chip antenna designs suitable to be fabricated in CMOS technology without any additional process. The results are listed and compared with state-of-the-art designs in the literature. The difficulties in designing high efficiency antenna on CMOS chip are discussed.
{"title":"Designs of fully on-chip antennas in (Bi)CMOS technology","authors":"S. Pan, L. Gilreath, P. Heydari, F. Capolino","doi":"10.1109/IWAT.2012.6178682","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178682","url":null,"abstract":"The paper presents several feasible millimeter wave on-chip antenna designs suitable to be fabricated in CMOS technology without any additional process. The results are listed and compared with state-of-the-art designs in the literature. The difficulties in designing high efficiency antenna on CMOS chip are discussed.","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"35 1","pages":"343-346"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73319751","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 : 2012-03-05DOI: 10.1109/IWAT.2012.6178655
B. Arigong, Jin Shao, Hyoungsoo Kim, Hualiang Zhang
This paper presents an innovative and practical architecture for tunable spiral inductor with high quality factor (Q) on standard CMOS technology. Metamaterial based winding ring structures are employed to achieve the proposed high performance inductor. Specifically, the proposed structure is realized by utilizing the multiple metal-layers and vias available in a CMOS process. It is found that, by controlling the number of additional metamaterial ring structure applied to the original spiral inductor, the total inductance can be tuned. Using full-wave electromagnetic simulator, 20% and 40% increase are achieved in inductance when adding single-turn and two-turn metamaterial winding rings respectively. Moreover, the resultant Q of the metamaterial based tunable inductor is also increased from 2.75 to 3.75 at 17GHz (i.e. 36% increment).
{"title":"Design of tunable metamaterial based on-chip spiral inductor","authors":"B. Arigong, Jin Shao, Hyoungsoo Kim, Hualiang Zhang","doi":"10.1109/IWAT.2012.6178655","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178655","url":null,"abstract":"This paper presents an innovative and practical architecture for tunable spiral inductor with high quality factor (Q) on standard CMOS technology. Metamaterial based winding ring structures are employed to achieve the proposed high performance inductor. Specifically, the proposed structure is realized by utilizing the multiple metal-layers and vias available in a CMOS process. It is found that, by controlling the number of additional metamaterial ring structure applied to the original spiral inductor, the total inductance can be tuned. Using full-wave electromagnetic simulator, 20% and 40% increase are achieved in inductance when adding single-turn and two-turn metamaterial winding rings respectively. Moreover, the resultant Q of the metamaterial based tunable inductor is also increased from 2.75 to 3.75 at 17GHz (i.e. 36% increment).","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"51 1","pages":"233-236"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87604397","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 : 2012-03-05DOI: 10.1109/IWAT.2012.6178407
Jingjing Tang, A. Cao, X. Bai, R. Jin, Xianling Liang, Jun-ping Geng
A half-wavelength and half turn quadrifilar helical antenna working at 450MHz is designed to provide wide angle, hemispheric coverage with high phase center stability. We apply the space-filling curves' principle to design a compact and symmetric feeding network with one 180° hybrid and two 90° hybrids, which can provide 90° phase difference among the four arms with uniform amplitude. The simulation results from the CST software illustrate that the antenna's half-power beamwidth exceeds 110? and the phase center variation is within 1mm at different elevations ranged from -55° to +55° over 20MHz bandwidth, which demonstrate that the proposed antenna design is quite applicable for satellite navigation system.
{"title":"Design of a Quadrifilar helical antenna with high phase center stability","authors":"Jingjing Tang, A. Cao, X. Bai, R. Jin, Xianling Liang, Jun-ping Geng","doi":"10.1109/IWAT.2012.6178407","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178407","url":null,"abstract":"A half-wavelength and half turn quadrifilar helical antenna working at 450MHz is designed to provide wide angle, hemispheric coverage with high phase center stability. We apply the space-filling curves' principle to design a compact and symmetric feeding network with one 180° hybrid and two 90° hybrids, which can provide 90° phase difference among the four arms with uniform amplitude. The simulation results from the CST software illustrate that the antenna's half-power beamwidth exceeds 110? and the phase center variation is within 1mm at different elevations ranged from -55° to +55° over 20MHz bandwidth, which demonstrate that the proposed antenna design is quite applicable for satellite navigation system.","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"66 1","pages":"96-99"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87995264","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 : 2012-03-05DOI: 10.1109/IWAT.2012.6178664
B. Lv, Xinbo Wang, Qingqing Song, Bin Zhang, J. Huangfu, L. Ran
In this paper, we present by analysis, simulation and experimental demonstration that a loosely configured grooved ground plane is able to significantly enhance the gain of a standard patch antenna with a flat, electrically large ground plane. Simulation and measurements show that along with the enhancement of the gain by up to 10.2 dB, other antenna characteristics, such as the backward radiation and the axial ratio, are also improved to a certain extent. The proposed patch antenna with grooved ground plane provides an alternative option to the use of a patch array to achieve higher gain that cannot be accomplished by an ordinary standalone patch antenna.
{"title":"Radiation enhancement for standard patch antennas using loosely grooved ground plane","authors":"B. Lv, Xinbo Wang, Qingqing Song, Bin Zhang, J. Huangfu, L. Ran","doi":"10.1109/IWAT.2012.6178664","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178664","url":null,"abstract":"In this paper, we present by analysis, simulation and experimental demonstration that a loosely configured grooved ground plane is able to significantly enhance the gain of a standard patch antenna with a flat, electrically large ground plane. Simulation and measurements show that along with the enhancement of the gain by up to 10.2 dB, other antenna characteristics, such as the backward radiation and the axial ratio, are also improved to a certain extent. The proposed patch antenna with grooved ground plane provides an alternative option to the use of a patch array to achieve higher gain that cannot be accomplished by an ordinary standalone patch antenna.","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"85 1","pages":"269-272"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83891348","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 : 2012-03-05DOI: 10.1109/IWAT.2012.6178640
Yong-xin Guo, H. Chu
Broadband 60-GHz vertical off-center dipole antenna and its arrays in low-temperature co-fired ceramic (LTCC) substrate are presented in this paper. The dipole antenna is designed using the off-center-fed technology to improve its bandwidth to cover the 60-GHz frequency band from 57 GHz to 66 GHz. A 4×4 planar array is optimized to achieve a maximum gain of 15.6 dBi at 60 GHz, while a beam-steering array using a low-cost Butler matrix is optimized to give a 5-dB measured beamwidth wider than 80° at 60 GHz. Measured results verified our prediction.
{"title":"Broadband 60-GHz beam-steering vertical off-center dipole antennas in LTCC","authors":"Yong-xin Guo, H. Chu","doi":"10.1109/IWAT.2012.6178640","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178640","url":null,"abstract":"Broadband 60-GHz vertical off-center dipole antenna and its arrays in low-temperature co-fired ceramic (LTCC) substrate are presented in this paper. The dipole antenna is designed using the off-center-fed technology to improve its bandwidth to cover the 60-GHz frequency band from 57 GHz to 66 GHz. A 4×4 planar array is optimized to achieve a maximum gain of 15.6 dBi at 60 GHz, while a beam-steering array using a low-cost Butler matrix is optimized to give a 5-dB measured beamwidth wider than 80° at 60 GHz. Measured results verified our prediction.","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"45 6","pages":"177-180"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91472001","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 : 2012-03-05DOI: 10.1109/IWAT.2012.6178418
X. Gong, L. An, Chengying Xu
Three researchers at University of Central Florida from electrical engineering, materials science, and mechanical engineering teamed together to develop high-temperature (>; 1000°C) sensors for various harsh environment applications such as combustion turbines. In this paper, we will provide an overview of the recent progress in the development of sensing materials, sensor fabrication methods, and wireless sensing techniques.
{"title":"Wireless passive sensor development for harsh environment applications","authors":"X. Gong, L. An, Chengying Xu","doi":"10.1109/IWAT.2012.6178418","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178418","url":null,"abstract":"Three researchers at University of Central Florida from electrical engineering, materials science, and mechanical engineering teamed together to develop high-temperature (>; 1000°C) sensors for various harsh environment applications such as combustion turbines. In this paper, we will provide an overview of the recent progress in the development of sensing materials, sensor fabrication methods, and wireless sensing techniques.","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"56 1","pages":"140-143"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79460177","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 : 2012-03-05DOI: 10.1109/IWAT.2012.6178670
R. Ziolkowski, Ning Zhu
Broad bandwidth metamaterial-inspired antennas have been designed and characterized numerically. Rather than introducing an external matching network that requires both resistance and reactance matching, our systems rely on internal non-Foster elements that are designed to vary the performance of their near-field resonant parasitic (NFRP) elements. Hence, by augmenting their narrow bandwidth counter-parts with internal non-Foster elements, the resulting electrically small antennas remain nearly completely matched to a 50 Ω source without any matching network and exhibit high radiation efficiencies over their FBW10dB bandwidths. These instantaneous bandwidths are nearly two orders of magnitude larger than those provided by their passive counterparts.
{"title":"Non-Foster element, bandwidth enhanced, metamaterial-inspired electrically small antennas","authors":"R. Ziolkowski, Ning Zhu","doi":"10.1109/IWAT.2012.6178670","DOIUrl":"https://doi.org/10.1109/IWAT.2012.6178670","url":null,"abstract":"Broad bandwidth metamaterial-inspired antennas have been designed and characterized numerically. Rather than introducing an external matching network that requires both resistance and reactance matching, our systems rely on internal non-Foster elements that are designed to vary the performance of their near-field resonant parasitic (NFRP) elements. Hence, by augmenting their narrow bandwidth counter-parts with internal non-Foster elements, the resulting electrically small antennas remain nearly completely matched to a 50 Ω source without any matching network and exhibit high radiation efficiencies over their FBW10dB bandwidths. These instantaneous bandwidths are nearly two orders of magnitude larger than those provided by their passive counterparts.","PeriodicalId":6341,"journal":{"name":"2012 IEEE International Workshop on Antenna Technology (iWAT)","volume":"20 1","pages":"293-296"},"PeriodicalIF":0.0,"publicationDate":"2012-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83438382","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}
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