Pub Date : 2014-07-06DOI: 10.1109/APS.2014.6905073
Kiran Phalak, A. Sebak
Triangular cavity backed T slot planar antenna is proposed for 60 GHz applications. Triangular cavity is designed using surface integrated waveguide technology. It exhibits the gain of 8.77 dBi. It has wide bandwidth of 8.4% at center frequency. Sidelobe level in E and H plane are -11.7 dB and -12.1 dB, respectively.
{"title":"Surface Integrated waveguide based triangular cavity backed T slot planar antenna at 60 GHz","authors":"Kiran Phalak, A. Sebak","doi":"10.1109/APS.2014.6905073","DOIUrl":"https://doi.org/10.1109/APS.2014.6905073","url":null,"abstract":"Triangular cavity backed T slot planar antenna is proposed for 60 GHz applications. Triangular cavity is designed using surface integrated waveguide technology. It exhibits the gain of 8.77 dBi. It has wide bandwidth of 8.4% at center frequency. Sidelobe level in E and H plane are -11.7 dB and -12.1 dB, respectively.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"89 1","pages":"1495-1496"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83860360","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 : 2014-07-06DOI: 10.1109/APS.2014.6904423
J. L. Frasch, E. Rothwell, B. Crowgey
A technique to extract the electromagnetic properties of conductor-backed absorbing materials is introduced. The sample is first placed into a waveguide, completely filling its cross-section. Then a portion of the sample is fit into a reduced-step guide. The two measured reflection coefficients provide sufficient information to obtain both the complex permittivity and permeability of the sample. The usefulness of the technique may be evaluated by testing the sensitivity of the extracted material parameters to instrumentation uncertainty.
{"title":"Stepped-waveguide technique for the extraction of the electromagnetic parameters of conductor-backed absorbers","authors":"J. L. Frasch, E. Rothwell, B. Crowgey","doi":"10.1109/APS.2014.6904423","DOIUrl":"https://doi.org/10.1109/APS.2014.6904423","url":null,"abstract":"A technique to extract the electromagnetic properties of conductor-backed absorbing materials is introduced. The sample is first placed into a waveguide, completely filling its cross-section. Then a portion of the sample is fit into a reduced-step guide. The two measured reflection coefficients provide sufficient information to obtain both the complex permittivity and permeability of the sample. The usefulness of the technique may be evaluated by testing the sensitivity of the extracted material parameters to instrumentation uncertainty.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"42 1","pages":"183-184"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82679795","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 : 2014-07-06DOI: 10.1109/APS.2014.6904680
Y. Lee, X. Mao
Path loss for the outdoor-to-indoor channel in a commercial and business district is examined for the application of urban warfare in the military UHF band. The path loss exponent and link availability for different transmitting routes are studied and compared.
{"title":"Study of outdoor-to-indoor channel in urban area","authors":"Y. Lee, X. Mao","doi":"10.1109/APS.2014.6904680","DOIUrl":"https://doi.org/10.1109/APS.2014.6904680","url":null,"abstract":"Path loss for the outdoor-to-indoor channel in a commercial and business district is examined for the application of urban warfare in the military UHF band. The path loss exponent and link availability for different transmitting routes are studied and compared.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"22 1","pages":"699-700"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82786532","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 : 2014-07-06DOI: 10.1109/APS.2014.6904450
R. Guinvarc’h, M. Serhir, F. Boust, N. Ribière-Tharaud
A wideband antenna array, conformed to a cylinder, is presented. It covers 360° from 1.2 GHz up to 3.6 GHz. It is made of 10 spiral antennas and backed by a ten face ground plane. Its diameter is 28cm, so almost one lambda at 1.2 GHz. It is designed for passive radar.
{"title":"A wideband omnidirectional conformal array for passive radar","authors":"R. Guinvarc’h, M. Serhir, F. Boust, N. Ribière-Tharaud","doi":"10.1109/APS.2014.6904450","DOIUrl":"https://doi.org/10.1109/APS.2014.6904450","url":null,"abstract":"A wideband antenna array, conformed to a cylinder, is presented. It covers 360° from 1.2 GHz up to 3.6 GHz. It is made of 10 spiral antennas and backed by a ten face ground plane. Its diameter is 28cm, so almost one lambda at 1.2 GHz. It is designed for passive radar.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"13 1","pages":"237-238"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86786252","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 : 2014-07-06DOI: 10.1109/APS.2014.6904732
K. Karnati, X. Gong
Floquet analysis is applied to study the effects of incident angle on the reflection properties of unit cells. The performance of reflectarray unit cells is evaluated in terms of reflection loss and phase sensitivity. The analysis is demonstrated in three planes of interest, where extremes in performance are likely to occur. Unit cell illuminated by an incident wave with varying angles of arrival is shown to have different coupling conditions and reflection properties. Anomalous phase responses are observed for particular incident angle and polarization of the incident wave. The presented analysis showcases the sensitiveness of the reflectarray element to incident angles.
{"title":"Effects from angle of incidence on reflection properties of reflectarray elements","authors":"K. Karnati, X. Gong","doi":"10.1109/APS.2014.6904732","DOIUrl":"https://doi.org/10.1109/APS.2014.6904732","url":null,"abstract":"Floquet analysis is applied to study the effects of incident angle on the reflection properties of unit cells. The performance of reflectarray unit cells is evaluated in terms of reflection loss and phase sensitivity. The analysis is demonstrated in three planes of interest, where extremes in performance are likely to occur. Unit cell illuminated by an incident wave with varying angles of arrival is shown to have different coupling conditions and reflection properties. Anomalous phase responses are observed for particular incident angle and polarization of the incident wave. The presented analysis showcases the sensitiveness of the reflectarray element to incident angles.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"23 1","pages":"807-808"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89079966","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 : 2014-07-06DOI: 10.1109/APS.2014.6905324
Jun Niu, M. Luo, Q. Liu
The multilayer distortion caused by the mask defects is regarded as one of the critical challenges of extreme ultraviolet (EUV) lithography for high density semiconductor patterning. To numerically analyze the influence of the defected nano-scale structures with high accuracy and efficiency, we have developed a boundary integral spectral element method (BI-SEM) that combines the SEM with a set of surface integral equations. The SEM is used to solve the interior computational domain, while the open boundaries are truncated by the surface integral equations. Through comparing the performance of this method with the conventional finite element method, it is shown that the proposed BI-SEM can greatly decrease both the memory cost and computation time.
{"title":"Boundary integral spectral element method for extreme ultraviolet multilayer defects analyses","authors":"Jun Niu, M. Luo, Q. Liu","doi":"10.1109/APS.2014.6905324","DOIUrl":"https://doi.org/10.1109/APS.2014.6905324","url":null,"abstract":"The multilayer distortion caused by the mask defects is regarded as one of the critical challenges of extreme ultraviolet (EUV) lithography for high density semiconductor patterning. To numerically analyze the influence of the defected nano-scale structures with high accuracy and efficiency, we have developed a boundary integral spectral element method (BI-SEM) that combines the SEM with a set of surface integral equations. The SEM is used to solve the interior computational domain, while the open boundaries are truncated by the surface integral equations. Through comparing the performance of this method with the conventional finite element method, it is shown that the proposed BI-SEM can greatly decrease both the memory cost and computation time.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"5 1","pages":"1994-1995"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89223707","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 : 2014-07-06DOI: 10.1109/APS.2014.6904871
Mohammod Ali, N. Bishop, M. Wright, W. Baron, J. Miller, J. Tuss, D. Zeppettella
A conformal pixelated pattern reconfigurable Yagi-Uda array is proposed. The array operates at around 2.5 GHz and can steer the beam in the 45 and -45 degree directions with the help of RF switches and a metal reflector placed 1 inch below the array surface.
{"title":"A pixelated pattern reconfigurable Yagi-Uda array for conformal loadbearing antenna structure (CLAS)","authors":"Mohammod Ali, N. Bishop, M. Wright, W. Baron, J. Miller, J. Tuss, D. Zeppettella","doi":"10.1109/APS.2014.6904871","DOIUrl":"https://doi.org/10.1109/APS.2014.6904871","url":null,"abstract":"A conformal pixelated pattern reconfigurable Yagi-Uda array is proposed. The array operates at around 2.5 GHz and can steer the beam in the 45 and -45 degree directions with the help of RF switches and a metal reflector placed 1 inch below the array surface.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"97 3","pages":"1089-1090"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91477118","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 : 2014-07-06DOI: 10.1109/APS.2014.6904830
M. Abdalla, S. Karimian, Zhirun Hu
This paper presents a novel compact planar dual-band spurious-free antenna based on metamaterial stepped-impedance resonators. The antenna provides the capability of controlling both of the frequency bands, while ensuring an extended spurious-free stopband. The antenna is designed to operate at UMTS and WLAN frequencies of 2.1 GHz and 2.4 GHz, respectively. The antenna dimensions are only 2 × 2 cm2, which is 50%smaller compared to a conventional half-wavelength patch antenna operating at the same frequencies. Operation mechanism of this antenna will be addressed elsewhere but this paper serves as proof of concept as it illustrates that simulation and measurement results are in close agreement; hence confirming the feasibility of this simple yet efficient antenna.
{"title":"Dual band spurious-free SIR metamaterial antenna","authors":"M. Abdalla, S. Karimian, Zhirun Hu","doi":"10.1109/APS.2014.6904830","DOIUrl":"https://doi.org/10.1109/APS.2014.6904830","url":null,"abstract":"This paper presents a novel compact planar dual-band spurious-free antenna based on metamaterial stepped-impedance resonators. The antenna provides the capability of controlling both of the frequency bands, while ensuring an extended spurious-free stopband. The antenna is designed to operate at UMTS and WLAN frequencies of 2.1 GHz and 2.4 GHz, respectively. The antenna dimensions are only 2 × 2 cm2, which is 50%smaller compared to a conventional half-wavelength patch antenna operating at the same frequencies. Operation mechanism of this antenna will be addressed elsewhere but this paper serves as proof of concept as it illustrates that simulation and measurement results are in close agreement; hence confirming the feasibility of this simple yet efficient antenna.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"37 1","pages":"1005-1006"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83153384","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 : 2014-07-06DOI: 10.1109/APS.2014.6904670
S. Dhar, M. Sharawi
Miniaturized multiple-input-multiple-output (MIMO) antennas with multiband operation are highly desirable to provide high data throughput and coverage in handheld devices. This paper presents a two element semi-ring multiband compact MIMO antenna having a total size of 32×38×0.76mm3. The natural high input impedance of the semi-ring is matched by a gap loaded capacitance along with double stub matching provided by the inner half ring. The antenna can cover both 1.8GHz and 2.4GHz bands with efficiencies of 43% and 54.4%, respectively. The gains at the two bands were 0.34dB and 1.56dB, respectively. The antenna is optimized for isolation and can provide isolation more than 20dB.
{"title":"A multi-band loaded semi-ring MIMO antenna","authors":"S. Dhar, M. Sharawi","doi":"10.1109/APS.2014.6904670","DOIUrl":"https://doi.org/10.1109/APS.2014.6904670","url":null,"abstract":"Miniaturized multiple-input-multiple-output (MIMO) antennas with multiband operation are highly desirable to provide high data throughput and coverage in handheld devices. This paper presents a two element semi-ring multiband compact MIMO antenna having a total size of 32×38×0.76mm3. The natural high input impedance of the semi-ring is matched by a gap loaded capacitance along with double stub matching provided by the inner half ring. The antenna can cover both 1.8GHz and 2.4GHz bands with efficiencies of 43% and 54.4%, respectively. The gains at the two bands were 0.34dB and 1.56dB, respectively. The antenna is optimized for isolation and can provide isolation more than 20dB.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"37 4 1","pages":"679-680"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79630286","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 : 2014-07-06DOI: 10.1109/APS.2014.6904462
Y. Lee, V. Natarajan, Y. S. Meng, J. X. Yeo, J. Ong
In this paper, preliminary results and analysis of cloud attenuation on a Ka-band satellite propagation link in tropical island of Singapore are reported. The received signal by a ground-based beacon receiver at 18.9 GHz was processed with a sliding window technique to minimize the system and scintillation effects. The results show that the Ka-band cloud attenuation is highly correlated with the observed solar radiation.
{"title":"Cloud attenuation on Ka-band satellite link in the tropical region: Preliminary results and analysis","authors":"Y. Lee, V. Natarajan, Y. S. Meng, J. X. Yeo, J. Ong","doi":"10.1109/APS.2014.6904462","DOIUrl":"https://doi.org/10.1109/APS.2014.6904462","url":null,"abstract":"In this paper, preliminary results and analysis of cloud attenuation on a Ka-band satellite propagation link in tropical island of Singapore are reported. The received signal by a ground-based beacon receiver at 18.9 GHz was processed with a sliding window technique to minimize the system and scintillation effects. The results show that the Ka-band cloud attenuation is highly correlated with the observed solar radiation.","PeriodicalId":6663,"journal":{"name":"2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)","volume":"79 1","pages":"261-262"},"PeriodicalIF":0.0,"publicationDate":"2014-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83322425","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：