2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)最新文献

Metallic Pattern Prediction For Surface Wave Antennas Using Bidirectional Gated Recurrent Unit Neural Network 基于双向门控循环单元神经网络的表面波天线金属方向图预测

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539634

Jiashu Yang, K. Tong

引用次数: 0

Ultra-Wide Band Circulators for STAR Communications through Sequentially Switched Delayed Lines towards low losses 通过顺序切换延迟线实现低损耗的星通信超宽带环行器

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539646

Y. Li, J. P. Santos, Yuanxun Ethan Wang

引用次数: 0

Penetration and Reflection Characteristics in Millimeter-Wave Indoor Channels 毫米波室内信道的穿透和反射特性

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539540

M. Khatun, Changyu Guo, H. Mehrpouyan

{"title":"Penetration and Reflection Characteristics in Millimeter-Wave Indoor Channels","authors":"M. Khatun, Changyu Guo, H. Mehrpouyan","doi":"10.1109/APWC52648.2021.9539540","DOIUrl":"https://doi.org/10.1109/APWC52648.2021.9539540","url":null,"abstract":"This paper presents indoor penetration and reflection characteristics of common building materials at millimeter-wave (mmWave) frequencies. These channel properties are carefully studied at 60, 71, and 81 GHz using a narrow-band signal with directional horn antennas. We measured the reflection coefficients at these high frequencies with varying incident angles to the surface of a material. Average penetration loss of material is also studied based on antenna polarization effects (co-polarization and cross-polarization) at 73 GHz channel. Materials include drywall and plywood for these channel characteristics in an indoor lab environment. It is found that the co-polarization has a higher path gain of 45.4 dB in the line-of-sight (LOS) scenario as compared to cross-polarization for the 73 GHz channel. Moreover, average penetration loss of plywood is slightly increased for cross-polarization (8.96 dB/cm) as compared to the co-polarization antenna (8.10 dB/cm) penetration loss. Results show that reflection coefficients, |Γ⊥| are stronger at higher frequencies, and the range of |Γ⊥| varies from 0.38 to 0.83 with impinging direction (i.e., to the surface of drywall) for 20° to 60°, respectively, in the 81 GHz channel.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116142623","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: 4

Signal Conditioning and Prototyping for Selective OFDM Systems with Simultaneous Wireless Information and Power Transfer 具有同步无线信息和功率传输的选择性OFDM系统的信号调理和原型设计

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539718

R. Buckley, R. Heath

引用次数: 0

Compact Broadband Antennas with Series and Parallel Resonances 具有串联和并联谐振的紧凑型宽带天线

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539615

K. Noguchi, Fumiya Osaki, Taichi Hamabe

引用次数: 1

Filtering Antenna Approach for In-Band Full-Duplexing Systems 带内全双工系统的滤波天线方法

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/APWC52648.2021.9539770

Sanghoon Lee, Kirti Dhwaj

引用次数: 0

Full Program 完整的程序

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/apwc52648.2021.9539523

引用次数: 0

A Dual Polarized Millimeter Wave Phased-Array Antenna 双极化毫米波相控阵天线

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/apwc52648.2021.9539814

Shailendra Kaushal, N. Guan

引用次数: 0

Subregion-Based Machine Learning for Wideband Amplitude-Only Direction-Finding Systems 基于子区域的宽带纯幅测向系统机器学习

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/apwc52648.2021.9539788

G. R. Friedrichs, M. Elmansouri, D. Filipović

{"title":"Subregion-Based Machine Learning for Wideband Amplitude-Only Direction-Finding Systems","authors":"G. R. Friedrichs, M. Elmansouri, D. Filipović","doi":"10.1109/apwc52648.2021.9539788","DOIUrl":"https://doi.org/10.1109/apwc52648.2021.9539788","url":null,"abstract":"In recent years, access to improved computing resources has contributed to the increased interest in the practical deployment of machine learning (ML) based systems. One area where ML has been considered is direction finding (DF) [1] . Typically, ML approaches for DF utilize preprocessing, or feature extraction. This produces good results, but it requires additional computations which increase the DF estimation time. Conventional DF approaches typically use the correlation method, where the received signal is correlated with pre-saved steering vectors in lookup tables. Some ML-based methods, such as the neural network presented in this work, can maintain a much smaller footprint than the baseline correlation approach, and omit the need for feature extraction. Often, these systems deploy multiple, parallel estimators which individually cover a fraction of the entire field-of-view (FOV), but collectively estimate over the system’s entire region of interest. This work presents a case study to quantify the impact of restricting the field-of-view (FOV) over which each subregion estimator operates.","PeriodicalId":253455,"journal":{"name":"2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126308674","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

Far-Distance VNA-based Measurements of Indoor Materials at 300 GHz 基于vna的300 GHz室内材料远距离测量

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC) Pub Date : 2021-08-09 DOI: 10.1109/apwc52648.2021.9539739

F. Sheikh, Yamen Zantah, A. Batra, I. Mabrouk, M. Al-Hasan, T. Kaiser

引用次数: 0