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2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)最新文献

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Helically counter-poised monopole antenna 螺旋反平衡单极天线
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738148
D. Govender, J. Magarelli, A. Caldow, C. Fumeaux
{"title":"Helically counter-poised monopole antenna","authors":"D. Govender, J. Magarelli, A. Caldow, C. Fumeaux","doi":"10.1109/APWC.2016.7738148","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738148","url":null,"abstract":"A novel method of reducing the size of a conventional dipole antenna is introduced by means of replacing one of the dipole arms with a helical element. The result of this asymmetrical arrangement is an antenna that presents an omnidirectional pattern with a modest reduction in gain and bandwidth, in comparison to a symmetrical dipole antenna. The structure is effectively represented as a helically counter-poised monopole. It is shown that the counter-poised helix for the monopole, effectively replaces the ground plane of a conventional monopole antenna, or alternatively by using this method the antennas size can be significantly reduced from a full dipole. The principle is validated through measurement of return loss, antenna gain and cross-polarization level.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129514786","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
Wideband printed inverted-F antenna with unidirectional radiation pattern 具有单向辐射方向图的宽带印刷反f天线
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738151
T. Fujimoto, J. Taguri
{"title":"Wideband printed inverted-F antenna with unidirectional radiation pattern","authors":"T. Fujimoto, J. Taguri","doi":"10.1109/APWC.2016.7738151","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738151","url":null,"abstract":"In this paper, the wideband printed inverted-F antenna with unidirectional radiation pattern is proposed. A rectangular element is loaded to the feeding element and a trapezoid cavity reflector is installed behind the antenna. The proposed antenna has a wide impedance bandwidth (2.08GHz-6.0GHz; 97%) and it has unidirectional radiation pattern in the operating frequency range. The gain are greater than 5dBi in the frequency ranges from 2GHz to 4.5GHz and from 5.3GHz to 6.0GHz. The minimum gain is 3dBi at 4.8GHz.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123443395","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 compact Coplanar 4-port MIMO antenna for high-speed UWB applications 一种紧凑的共面4端口MIMO天线，适用于高速超宽带应用
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738132
T. Roshna, U. Deepak, P. Mohanan
{"title":"A compact Coplanar 4-port MIMO antenna for high-speed UWB applications","authors":"T. Roshna, U. Deepak, P. Mohanan","doi":"10.1109/APWC.2016.7738132","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738132","url":null,"abstract":"This paper proposes a compact 4-port Co-Planar Stripline (CPS) fed Ultra WideBand (UWB) antenna for Multiple-Input Multiple-Output (MIMO) applications. The antenna is fabricated on a 43 mm × 43 mm × 1.588 mm substrate with relative permittivity of 4.3. The antenna possess a 2:1 VSWR impedance matching bandwidth from 3 - 11 GHz, covering the required UWB bandwidth, specified by Federal Communication Commission (FCC) and a good isolation of over 20 dB in the operating band. Stable radiation patterns with stable gain, good efficiency, low envelope correlation coefficient are the attractive features of this antenna.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128678838","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
A dual-polarized array antena for on-the-move applications in Ku-band 一种用于ku波段移动应用的双极化阵列天线
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738102
H.-T. Zhang, W. Wang, M. Jin, X.-P Lu
{"title":"A dual-polarized array antena for on-the-move applications in Ku-band","authors":"H.-T. Zhang, W. Wang, M. Jin, X.-P Lu","doi":"10.1109/APWC.2016.7738102","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738102","url":null,"abstract":"This paper describes a multilayer antenna panel for a low cost Ku-band Array Antenna for on-the-move applications. The LOCOMO satcom terminal is based on a dual and interchangeable linear polarized low-profile waveguide antenna with transmit/receive and H/V capability. Planar Horn array is used to attain dual linear-polarization working with orthomode transducer. High directivity and wide bandwidth impedance is provided. A demo array of 16 × 64 elements is designed, manufactured and tested with perfect performances, verifying the design.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126112614","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
Radiation beam with a large tilt angle 具有大倾斜角的辐射光束
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738104
H. Nakano, Y. Kameta, J. Yamauchi
{"title":"Radiation beam with a large tilt angle","authors":"H. Nakano, Y. Kameta, J. Yamauchi","doi":"10.1109/APWC.2016.7738104","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738104","url":null,"abstract":"The wide beam radiated in the broadside direction from a patch antenna is transformed into a narrow tilted beam using three loop-based plates. The loops are made of strip conductors and have the same outer circumference and different strip widths. A tilted beam of approximately 60 degrees from the broadside direction is realized. A VSWR bandwidth of 8% is obtained.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114852796","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
Printed inverted L antenna on dielectric substrate excited by microstrip line 微带线激励介质基板印刷倒L型天线
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738174
M. Taguchi, T. Taniguchi
{"title":"Printed inverted L antenna on dielectric substrate excited by microstrip line","authors":"M. Taguchi, T. Taniguchi","doi":"10.1109/APWC.2016.7738174","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738174","url":null,"abstract":"A printed inverted L antenna on a dielectric substrate excited by a microstrip line is proposed and numerically analyzed. The inverted L antenna is printed on the surface of the upper dielectric substrate and the microstrip line is printed on the back surface of the lower dielectric substrate. On the conducting plane between two dielectric layers, a slot is located near the base of vertical element of inverted L antenna. The design frequency is 24 GHz. The antenna size is 3 mm (0.24 ?) by 6 mm (0.48 λ) by 0.436 mm (0.035 λ). λ is the wavelength at 24 GHz. The length and width of horizontal element of inverted L antenna are 1.8 mm (0.144 λ) and 0.6 mm (0.128 λ), respectively. The S11 less than -10 dB is satisfied from 23.9 GHz to 24.06 GHz. The directivity of 4.75 dBi is obtained at the design frequency of 24 GHz.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129474909","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
Frequency performance of 4-layer discretized Luneburg antennas 四层离散Luneburg天线的频率特性
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738150
D. Gray, N. Nikolic, J. Thornton
{"title":"Frequency performance of 4-layer discretized Luneburg antennas","authors":"D. Gray, N. Nikolic, J. Thornton","doi":"10.1109/APWC.2016.7738150","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738150","url":null,"abstract":"A series of 8λ0 to 14λ0 radius 4-layer stepped approximation Luneburg lenses were designed for the same scalar feed positioned at 1.1 lens radii. The relative permittivities and normalized thicknesses of the matching layers of each lens were close but not equal. The lenses were simulated in commercially available full wave simulators. The aperture efficiencies decreased as the lens radii was increased, showing that minor variations in layer thickness and relative permittivity were unable to compensate for decreased excitation aperture illumination. Achieving high aperture efficiencies requires optimization of both lens and feed, the best here been 80% across 15% bandwidth for the 8λ0 lens. The peak cross-polarized radiation within the main lobe was found to be in the 45° plane and to be an artifact of the scalar feed, and not the lens designs.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126037215","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
Application of wideband and narrow-band channel models to GPS satellite signal propagation in urban environments 宽带和窄带信道模型在城市GPS卫星信号传播中的应用
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738130
H. H. Moghadam, N. Hendijani, A. Kouki
{"title":"Application of wideband and narrow-band channel models to GPS satellite signal propagation in urban environments","authors":"H. H. Moghadam, N. Hendijani, A. Kouki","doi":"10.1109/APWC.2016.7738130","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738130","url":null,"abstract":"This paper presents a deterministic propagation model to predict the path loss in urban environments specifically in high-rise building areas. The simulation results including narrowband and wideband channel simulation of path loss and normalized signal level in urban model are compared to the conventional line of sight (LOS) model. The significant difference between the normalized signal level of the LOS model and urban environment model points out the importance of realistic GPS signal simulation in urban environments.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126693405","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 investigation of the radio refractive conditions in lowest portions of the troposphere near Margalla Hills, Pakistan 巴基斯坦马加拉山附近对流层最底层射电折射率条件的研究
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738162
M. Abdullah, H. Ullah, H. Rasheed, N. Mufti
{"title":"An investigation of the radio refractive conditions in lowest portions of the troposphere near Margalla Hills, Pakistan","authors":"M. Abdullah, H. Ullah, H. Rasheed, N. Mufti","doi":"10.1109/APWC.2016.7738162","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738162","url":null,"abstract":"Atmospheric refraction is one of the mechanisms through which radio signals propagate in the atmosphere. The refraction of radio signals within atmosphere can be quantitatively investigated using k-factor. For standard atmospheric condition, a value of 4/3 for the k-factor is used for propagation modeling. Weather fluctuates for different places, times and heights, causing changes in the degree of refraction and propagation of radio signals. There is a lack of research work in the calculation of effective earth radius factor or k-factor in Pakistan. The current research has been conducted using two-years' meteorological data from the weather stations around the Margalla Hills. The annual, seasonal and monthly statistics of k-factors are presented. The relevant, comparable values are substantially different from the global average value, as well as those estimated from historic global ITU data. This supports the initial hypothesis that accurate calculation of such parameters is important, which requires latest, local meteorological data. This research will help in minimization of prediction problems related to k-factor values.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116178286","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
Study of a 3DMLUV-FIA method for EM scattering from dielectric object and rough surface 介质物体和粗糙表面电磁散射的3DMLUV-FIA方法研究
2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2016-09-01 DOI: 10.1109/APWC.2016.7738136
G. Zhu, Siyuan He, Jingjing He, Wu Xuezhi
{"title":"Study of a 3DMLUV-FIA method for EM scattering from dielectric object and rough surface","authors":"G. Zhu, Siyuan He, Jingjing He, Wu Xuezhi","doi":"10.1109/APWC.2016.7738136","DOIUrl":"https://doi.org/10.1109/APWC.2016.7738136","url":null,"abstract":"The electromagnetic scattering from the composite model of a three-dimensional (3-D) dielectric object located above a two-dimensional (2-D) dielectric rough surface is analyzed in this work. The 3DMLUV has been successfully applied in the scattering of PEC targets, however, when the object or rough surface become dielectric, the coupling between dielectric object and dielectric rough surface will lead to slow constriction. The FIA is applied to further speed up the constricted speed of the matrix required in 3DMLUV. The efficiency, stability and accuracy of the proposed method are demonstrated in a variety of scattering problems.","PeriodicalId":143796,"journal":{"name":"2016 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116627406","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
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