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2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)最新文献

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Ka-Band Tx and Rx Multibeam Reflector Antenna Using One Aperture 单孔径ka波段Tx和Rx多波束反射天线
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10069062
Wei-bing Zhang, Siqi Wang, Long Zhang, Zhengxin Shi
{"title":"Ka-Band Tx and Rx Multibeam Reflector Antenna Using One Aperture","authors":"Wei-bing Zhang, Siqi Wang, Long Zhang, Zhengxin Shi","doi":"10.1109/APCAP56600.2022.10069062","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069062","url":null,"abstract":"This paper describes a multibeam antenna system which produces transmit and receive beams simultaneously using multiple-feed-per-beam (MFPB) scheme. Compared with the current widely used mutibeam antenna with more than two apertures, the proposed antenna configuration required only one main reflector aperture. Combined with a frequency selective sub-reflector (FSSR), a transmit feed array and a receive feed array, this antenna system can produce equalized beams to cover the desired area. Based on the beam deviation factor (BDF) of the parabolic reflector, a simple and accurate design process is proposed. And a Ka-band multibeam antenna is designed, and the preliminary results are simulated. The simulated results show that the multibeam antenna using one reflector aperture is feasible.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132838811","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
Structure design and Simulation of a high performance double-layer shielding box 高性能双层屏蔽箱的结构设计与仿真
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10069257
Wang Yang, Hu Maozhen, Liu Qi, Jiao Zhenpeng, Shen Yangxin, T. Jing
{"title":"Structure design and Simulation of a high performance double-layer shielding box","authors":"Wang Yang, Hu Maozhen, Liu Qi, Jiao Zhenpeng, Shen Yangxin, T. Jing","doi":"10.1109/APCAP56600.2022.10069257","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069257","url":null,"abstract":"Aiming at the electromagnetic shielding problem of electronic equipment in the radio observatory site, based on the electromagnetic shielding principle and the shielding effectiveness test method, the paper proposes a structural design scheme of double-layer electromagnetic shielding box meeting the astronomical observation requirements. In this paper, a double-layer shielding structure model is established and tested by CST full wave simulation software. The model takes the plane wave as the excitation source and places probes in the cavity. The simulation results show that the shielding efficiency in L-band can reach 120 dB, which confirms the effectiveness of the structure model and provides a reference for the practical application of electromagnetic shielding protection equipment in the future radio observatory site.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133709874","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
Indoor Wi-Fi Localization Based on CNN Feature Fusion Network 基于CNN特征融合网络的室内Wi-Fi定位
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10069817
Youkun Chen, Q. Pu, Mu Zhou, Xiaolong Yang, Xin Lan, Quan Long, Li Fu
{"title":"Indoor Wi-Fi Localization Based on CNN Feature Fusion Network","authors":"Youkun Chen, Q. Pu, Mu Zhou, Xiaolong Yang, Xin Lan, Quan Long, Li Fu","doi":"10.1109/APCAP56600.2022.10069817","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069817","url":null,"abstract":"With the rise of 5G new smart city construction, the demand for location-based services (LBS) has been increasing rapidly. Indoor positioning technology based on Wi-Fi has attracted extensive attention due to its advantages of low deployment cost and high positioning accuracy. However, traditional neural networks ignore a large amount of available information in the intermediate layer when conduct feature extraction of Wi-Fi signal data, resulting in poor localization performance and robustness. In order to solve this drawback, this paper proposes a novel convolutional neural network (CNN) feature fusion network which considers both spatial features and intermediate layer features. Specifically, it normalizes the raw data by z-score to reduce the impact of data fluctuation. Then the spatial features are extracted using CNN and a flatten layer is added after its pooling layer to extract the intermediate layer features. Finally, all features are merged into the fully connected layer. The experimental results show that our proposed fusion network outperforms existing localization algorithms.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132006119","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
Study on Passive Millimeter-Wave Radiation Image of Exponential rough Surface 指数型粗糙表面被动毫米波辐射成像研究
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10069764
Pengpeng Xu, Chuan Yin, Haochen Zhu, Fengchen Xu
{"title":"Study on Passive Millimeter-Wave Radiation Image of Exponential rough Surface","authors":"Pengpeng Xu, Chuan Yin, Haochen Zhu, Fengchen Xu","doi":"10.1109/APCAP56600.2022.10069764","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069764","url":null,"abstract":"In this paper, a passive millimeter wave imaging method for exponential rough surface is presented, Moreover, the passive millimeter wave imaging methods based on rough surface and theoretical model of rough surface reflection are introduced. In order to study the influence of rough surface type on passive millimeter wave imaging, the models of Gaussian rough surface and exponential rough surface are established and simulated. Finally, the comparison results of brightness temperature value between Gaussian rough surface and exponential rough surface show that when the roughness changes, the brightness temperature value of Gaussian rough surface and that of exponential rough surface have similar changes, and the brightness temperature of Gaussian rough surface is larger than that of exponential rough surface.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132172515","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 Broadband Circularly Polarized Patch Antenna Using Characteristic Mode Analysis 基于特征模分析的宽带圆极化贴片天线
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10069538
Zhigang Tu, Yong-Dan Kong
{"title":"A Broadband Circularly Polarized Patch Antenna Using Characteristic Mode Analysis","authors":"Zhigang Tu, Yong-Dan Kong","doi":"10.1109/APCAP56600.2022.10069538","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069538","url":null,"abstract":"A broadband circularly polarized (CP) patch antenna is proposed based on characteristic mode analysis (CMA). It's known that the bandwidth of a CP patch antenna can be enhanced by adding two or four parasitic elements. However, it's found that only one of the two characteristic modes (CM) newly introduced by parasitic patches is excited. According to the idea of “degenerate mode separation”, these same parasitic patches are adjusted as unequal length. Then both parasitic CMs can be excited well, which resulted in wider bandwidth of axial-ratio (AR) and impedance. The CMA is used for analysis and optimization of the proposed antenna. A classical prototype at 10GHz is designed to verify this concept, and its 3dB AR bandwidth can be increased from 2.8% to 6.3%, while its −10dB impedance bandwidth is improved from 10.2% to 13.4%.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133190769","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 Non-Uniform Metasurface-Based Wideband CP Antenna With Additional Filtering Response 具有附加滤波响应的非均匀超表面宽带CP天线
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10068784
Jiayan Zhang, H. Jin, Wenlei Wang, G. Luo
{"title":"A Non-Uniform Metasurface-Based Wideband CP Antenna With Additional Filtering Response","authors":"Jiayan Zhang, H. Jin, Wenlei Wang, G. Luo","doi":"10.1109/APCAP56600.2022.10068784","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10068784","url":null,"abstract":"A low-profile circular-polarized (CP) metasurface antenna (MSA) with wide axial ratio (AR) bandwidth and additional filtering response is presented. The proposed MSA consists of an array of $4times 4$ non-uniform corner-truncated patch units, and is excited by a filtering balun through two parallel coupling slots. An additional AR minimum can be produced by the non-uniform units resulting an improved AR bandwidth. The filtering balun with extra resonant stubs can produce three radiation nulls to form a bandpass filtering response. Simulated results indicate that the proposed filtering CP MSA has a fractional bandwidth of 17.7% for $vert boldsymbol{S}_{11}vert < -10text{dB}$ and AR < 3 dB, which can cover the 5G N79 band (4.4 - 5 GHz). Good bandpass filtering response with a flat in-band gain variation from 7.9 to 8.9 dBic and high out-of-band rejection levels of 31 and 27 dB in the lower and upper stopbands, respectively, are also observed.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133759079","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
Machine-learning-based Optimization Method for Large-Phase-Shift Metacells (Invited) 基于机器学习的大相移元胞优化方法(特邀)
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10069784
Peiqin Liu, Shengkai Xu, Xin Peng, Zhi Ning Chen
{"title":"Machine-learning-based Optimization Method for Large-Phase-Shift Metacells (Invited)","authors":"Peiqin Liu, Shengkai Xu, Xin Peng, Zhi Ning Chen","doi":"10.1109/APCAP56600.2022.10069784","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069784","url":null,"abstract":"A machine-learning-based optimization method is proposed for the design of large-phase-shift metacells. The artificial neural network (ANN) algorithm is utilized to build accurate and efficient surrogate models. Both forward and inverse processes are proposed. In the forward process, dimensions of metacells are fed as the input of an ANN and the neural work outputs the transmission coefficients of these metacells. In the inverse process, the input of an ANN is the desired transmission coefficients, and the neural network predicts the dimensions of metacell that satisfy the targeted performance. A five-layer patch-based metacell is investigated as an example to validate the proposed method. With the machine-learning-based optimization method, the achieved −1-dB phase-shift range of the five-layer patch-based metacell increases from $270^{circ}$ of existing solution to $420^{circ}$.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133819891","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 39 GHz Antenna-in-Package Deign Based on Multi-Layer Liquid-Crystal Polymer for 5G Applications 基于多层液晶聚合物的39ghz 5G封装天线设计
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10069853
Zhi-Xia Du, Bintao Tang, Chunbing Guo, Bo Sun, Shan-jia Xu, Gary Zhang
{"title":"A 39 GHz Antenna-in-Package Deign Based on Multi-Layer Liquid-Crystal Polymer for 5G Applications","authors":"Zhi-Xia Du, Bintao Tang, Chunbing Guo, Bo Sun, Shan-jia Xu, Gary Zhang","doi":"10.1109/APCAP56600.2022.10069853","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069853","url":null,"abstract":"A millimeter-wave multi-layer antenna-in-package design is proposed for 5G applications. A patch antenna is designed in the package with HDI stack-up based on liquid-crystal polymer (LCP). A cavity is located in the multi-layer LCP to hold the RFIC die. Moreover, the antenna is matched to the RFIC die by employing a stripline matching network with smooth transition. Simulation results show that the antenna in package achieves a reflection coefficient of −30 dB and a boresight gain greater than 6.7 dBi at 39 GHz.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114416559","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
Radar Forward-looking Imaging Method for Complex Targets Based on L1-Regularized Least Squares 基于l1正则化最小二乘的复杂目标雷达前视成像方法
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10069746
Qingping Liu, Yongqiang Cheng, Kang Liu, Hongqiang Wang
{"title":"Radar Forward-looking Imaging Method for Complex Targets Based on L1-Regularized Least Squares","authors":"Qingping Liu, Yongqiang Cheng, Kang Liu, Hongqiang Wang","doi":"10.1109/APCAP56600.2022.10069746","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10069746","url":null,"abstract":"Based on the wavefront modulation technique, we introduced the principle and imaging model of forward-looking imaging. Considering the scattering coefficient distribution of the complex target is no longer sparse, L1-regularized least squares method based on sparse representation is proposed for reconstructing radar images of complex targets. The transformation matrix is generated by the dictionary learning method which provides a sparser representation of the scattering coefficient distribution of the complex target. By inversing the solved sparse vector under the transformation matrix, the reconstruction of complex targets can be realized. Simulation results show the effectiveness of the proposed method.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117006331","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
Design of Broadband RCSR Based on Compound Mechanism of Absorption and Scattering Modulation 基于吸收和散射调制复合机制的宽带RCSR设计
2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP) Pub Date : 2022-11-04 DOI: 10.1109/APCAP56600.2022.10068913
Ying Zhang, Xinmi Yang, Jia Hou
{"title":"Design of Broadband RCSR Based on Compound Mechanism of Absorption and Scattering Modulation","authors":"Ying Zhang, Xinmi Yang, Jia Hou","doi":"10.1109/APCAP56600.2022.10068913","DOIUrl":"https://doi.org/10.1109/APCAP56600.2022.10068913","url":null,"abstract":"This paper proposes and designs a broadband RCS reduction(RCSR) technique based on the composite mechanism of absorption and scattering modulation, which reduces RCS by absorption in the relatively low and high, and intermediate frequency bands, and by phase canceling in the other frequency bands, so that the overall RCS will be reduced. Two types of units are used in the whole plane, both of which are double-loop structures. Element 0 is the main unit, which produces the absorbing effect in the low and high, and intermediate frequency bands, and element 1 is the auxiliary unit, which uses the principle of phase cancellation to reduce the RCS in the other frequency bands.","PeriodicalId":197691,"journal":{"name":"2022 IEEE 10th Asia-Pacific Conference on Antennas and Propagation (APCAP)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116462619","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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