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2021 International Symposium on Antennas and Propagation (ISAP)最新文献

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Wideband Phased Arrays with Large Scan Range and Low Profile 大扫描范围低轮廓宽带相控阵
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614375
S. Qu, Shiwen Yang
{"title":"Wideband Phased Arrays with Large Scan Range and Low Profile","authors":"S. Qu, Shiwen Yang","doi":"10.23919/ISAP47258.2021.9614375","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614375","url":null,"abstract":"Six designs of the wideband phased array antennas based on Wheeler’s concept of current sheet have been summarized in this paper. From the array structure point of view, the arrays with vertically placed PCBs and those with fully planar structures have been categorized. From the final goals, the efforts have been paid to the arrays toward larger bandwidth and those with as a low profile as possible. Photographs of the six designs have been given for reference in this each section.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131422988","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
Simulation Results of a Foldable Reflectarray Composed of Four Triangular Notched Patches 由四个三角形缺口块组成的可折叠反射镜的仿真结果
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614552
T. Tomura, M. Machida, Hiraku Sakamoto
{"title":"Simulation Results of a Foldable Reflectarray Composed of Four Triangular Notched Patches","authors":"T. Tomura, M. Machida, Hiraku Sakamoto","doi":"10.23919/ISAP47258.2021.9614552","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614552","url":null,"abstract":"A foldable reflectarray antenna is proposed in this paper. The reflection element of the reflectarray is composed of four triangular elements to avoid a folding pattern. The reflection elements show that 330-degree phase tuning ability. An 18×18-element reflectarray antenna is designed and simulation shows 25.4-dBi directivity and −26.6-dB cross-polarization.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"4 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131432260","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
Detection of Defective Elements in Array Antennas Using Artificial Neural Networks and Eigenmode Currents 基于人工神经网络和特征模电流的阵列天线缺陷元件检测
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614371
K. Konno, Xin Wang, Qiang Chen
{"title":"Detection of Defective Elements in Array Antennas Using Artificial Neural Networks and Eigenmode Currents","authors":"K. Konno, Xin Wang, Qiang Chen","doi":"10.23919/ISAP47258.2021.9614371","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614371","url":null,"abstract":"A method for finding defective elements in array antennas is introduced. The method is named as ANN-EC because the method is based on an artificial neural network (ANN) and eigenmode currents (EC). Current distribution of the array antennas is reconstructed from magnitude of their near-field using the ANN-EC. The ANN-EC is applied to dipole array antennas including defective elements. It is demonstrated that defective elements in the array antennas can be found successfully using the ANN-EC.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131525673","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
High Gain Dual Parasitic Patch Loaded Wideband Antenna for 28 GHz 5G Applications 用于28 GHz 5G应用的高增益双寄生贴片加载宽带天线
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614441
W. A. Awan, M. Alibakhshikenari, E. Limiti
{"title":"High Gain Dual Parasitic Patch Loaded Wideband Antenna for 28 GHz 5G Applications","authors":"W. A. Awan, M. Alibakhshikenari, E. Limiti","doi":"10.23919/ISAP47258.2021.9614441","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614441","url":null,"abstract":"This work presents the design of a high gain wideband antenna for 28 GHz band application. The antenna structure was inspired from a conventional circular patch which is modified using consecutive loading of two parasitic patch. The presented antenna offers a wideband to completely cover the globally allocated band spectrum for 28 GHz 5G applications. Moreover, the broad side radiation pattern, relatively compact size and high gain makes the proposed work potential candidate for future 5G applications.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131667128","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
On the Resonant Electrical Length of Helical Antennas Placed between Metallic Parallel Plates 金属平行板间螺旋天线的谐振电长度
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614525
W. Dyab, M. Ibrahim, Ahmed A. Sakr, K. Wu
{"title":"On the Resonant Electrical Length of Helical Antennas Placed between Metallic Parallel Plates","authors":"W. Dyab, M. Ibrahim, Ahmed A. Sakr, K. Wu","doi":"10.23919/ISAP47258.2021.9614525","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614525","url":null,"abstract":"Helical antennas placed between two infinite metallic parallel plates are investigated. This study is concerned with the resonant electrical length of helical antennas. The first resonance appears as the helical antenna is transiting the frequency gap between its well-known normal and axial modes of operation. A parametric study is conducted to calculate the resonant electrical length as a function of the helical parameters, namely the radius and pitch of the helix. The results are validated by comparing the solutions of two independent problems, one is driven with a source and the other is an eigenvalue problem with periodic boundary conditions. The presented results are useful in the design of gap waveguides where the periodic media are made of helical wires.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131708326","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
Improving Antenna Efficiency of Low-height-printed IFA Using SRR for Narrow-Bezel Applications 利用SRR提高低高度印刷IFA天线在窄边框应用中的效率
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614364
Jang H. Bae, Young Joong Yoon
{"title":"Improving Antenna Efficiency of Low-height-printed IFA Using SRR for Narrow-Bezel Applications","authors":"Jang H. Bae, Young Joong Yoon","doi":"10.23919/ISAP47258.2021.9614364","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614364","url":null,"abstract":"This paper proposes an antenna design technique that uses split-ring resonators (SRRs) with lumped capacitors with the aim of enhancing antenna efficiency of a low-height inverted F-type antenna (IFA). SRR elements are arranged on the edge of the ground under the parallel arm of the IFA. Proposed SRR can be designed regardless of the size of bezels. By applying SRRs to an IFA, antenna efficiency is improved by 14.8 % at the operating frequency.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134083267","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
Multi-target Monitoring for Distinguishable Range Improvement Using a Hybrid FMCW-FSK 24 GHz Radar 基于混合FMCW-FSK 24 GHz雷达的多目标监测
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614367
Ming Hong Li, Kuan Ju Wu, Chin-Lung Yang
{"title":"Multi-target Monitoring for Distinguishable Range Improvement Using a Hybrid FMCW-FSK 24 GHz Radar","authors":"Ming Hong Li, Kuan Ju Wu, Chin-Lung Yang","doi":"10.23919/ISAP47258.2021.9614367","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614367","url":null,"abstract":"This paper presents an approach to improve the distinguishable range by using a hybrid frequency modulated continuous wave (FMCW) - frequency shift keying (FSK) of 24 GHz Radar. For traditional FMCW radar, the range resolution is inversely proportional to the bandwidth of radar. The proposed hybrid FMCW-FSK radar utilizes an overlapped chirp waveform. The distance corresponded to every frequency can be detected if the targets in the same range bin has different Doppler frequencies. Therefore, the fundamental theoretical limit of range resolution can be broken through applying the proposed waveform. From the experimental results, the distinguishable range is 27.2 cm for 150 MHz bandwidth, compared to traditional 1m resolution. Accordingly, the ratio of improvement is 3.6 times.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134279152","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 Millimeter-Wave Bandpass Filter Based on Substrate Integrated Dielectric Resonator 基于衬底集成介质谐振器的毫米波带通滤波器
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614434
Wei Sheng Tang, Shao Yong Zheng, Yong Mei Pan
{"title":"A Millimeter-Wave Bandpass Filter Based on Substrate Integrated Dielectric Resonator","authors":"Wei Sheng Tang, Shao Yong Zheng, Yong Mei Pan","doi":"10.23919/ISAP47258.2021.9614434","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614434","url":null,"abstract":"In this paper, a substrate integrated dielectric resonator (SIDR) is utilized to realize a novel millimeter-wave bandpass filter (BPF) for the first time. The dielectric resonator is fabricated using substrate and packaged by multi-layer PCB technology. Two degenerated modes TEδ11 and TE11δ1 are used and excited by the slot coupling feeding mechanism. A prototype operating at 30 GHz is designed and simulated. The simulated result demonstrates a low insertion loss of 1.57 dB with a fractional bandwidth of 6% considering the metal and dielectric loss. Advantages of low profile, light weight, and convenience in integration can be also observed.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124418526","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
Spiral Choking Method for Scattering Suppression in 4G and 5G Base Station Antenna Arrays 用于抑制 4G 和 5G 基站天线阵列散射的螺旋扼流方法
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614395
Hai-Han Sun, He Zhu, C. Ding, B. Jones, Y. Guo
{"title":"Spiral Choking Method for Scattering Suppression in 4G and 5G Base Station Antenna Arrays","authors":"Hai-Han Sun, He Zhu, C. Ding, B. Jones, Y. Guo","doi":"10.23919/ISAP47258.2021.9614395","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614395","url":null,"abstract":"In this paper, a novel distributed choking method, the spiral choke, is presented to address the cross-band scattering issue in dual-band antenna arrays. The operating mechanism of the spiral choke is analyzed, and its effectiveness in suppressing cross-band scattering is verified in a closely spaced 4G and 5G dual-band array. The experimental results demonstrate that the array with the spiral-choked LB element achieves mitigated cross-band scattering and has consistent radiation performance in both well-matched low and high bands.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129403031","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
The Hybrid Over-the-Air (OTA) Test Method 混合空中(OTA)测试方法
2021 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-10-19 DOI: 10.23919/ISAP47258.2021.9614458
Cheng-Nan Hu, Jiaquan Wu, P. X. Wang, Jacobi Chen, D. Chang
{"title":"The Hybrid Over-the-Air (OTA) Test Method","authors":"Cheng-Nan Hu, Jiaquan Wu, P. X. Wang, Jacobi Chen, D. Chang","doi":"10.23919/ISAP47258.2021.9614458","DOIUrl":"https://doi.org/10.23919/ISAP47258.2021.9614458","url":null,"abstract":"Massive MIMO devices require an OTA test to perform the coherent phase calibration and RF conformance test. To cover all test scenarios, the hybrid OTA test method is proposed and validated experimentally here.","PeriodicalId":132941,"journal":{"name":"2021 International Symposium on Antennas and Propagation (ISAP)","volume":"2676 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115210080","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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