Pub Date : 2022-08-12DOI: 10.1109/IWS55252.2022.9977963
Qiang Yang, Yuwen Wu, ShiKai Zuo, Kai Tang, Jianhang Zou, Yijun Cai
Currently, garbage classification and recycling have been a hot spot in society. The method of realizing garbage classification through manual manner is not only inefficient, high cost, but also in a harsh working environment. Therefore, through the research and application of technologies related to machine vision and autonomous driving, this paper designs an intelligent classification system based on YOLOv5 object detection algorithm and Gmapping laser-SLAM (Simultaneous Localization and Mapping) algorithm to realize full-automation of garbage classification. The system vision module adopts YOLOv5 algorithm and trains the model on self-made garbage classification data set. U sing the trained model, the algorithm can extract the features of different types of garbage images to realize the purpose of garbage detection and classification. The movement control module adopts Gmapping algorithm based on LIDAR (Light Laser Detection and Ranging) to realize the synchronous positioning and map construction in the working environment, thereafter to complete the transportation of garbage. The experimental results show that the classification system designed in this paper can accurately transport the garbage to the destination with good intelligence.
目前，垃圾分类与回收已成为社会关注的热点。通过人工方式实现垃圾分类的方法不仅效率低、成本高，而且工作环境恶劣。因此，本文通过对机器视觉和自动驾驶相关技术的研究与应用，设计了一套基于YOLOv5目标检测算法和gapping激光slam (Simultaneous Localization and Mapping)算法的智能分类系统，实现垃圾分类的全自动化。系统视觉模块采用YOLOv5算法，在自制的垃圾分类数据集上训练模型。利用训练好的模型，该算法可以提取不同类型垃圾图像的特征，实现垃圾检测和分类的目的。运动控制模块采用基于LIDAR (Light Laser Detection and Ranging，光激光探测与测距)的gapping算法，在工作环境中实现同步定位和地图构建，从而完成垃圾的运输。实验结果表明，本文设计的分类系统能够准确地将垃圾运送到目的地，具有良好的智能。
{"title":"Intelligent classification system based on target detection algorithm and laser-SLAM algorithm","authors":"Qiang Yang, Yuwen Wu, ShiKai Zuo, Kai Tang, Jianhang Zou, Yijun Cai","doi":"10.1109/IWS55252.2022.9977963","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977963","url":null,"abstract":"Currently, garbage classification and recycling have been a hot spot in society. The method of realizing garbage classification through manual manner is not only inefficient, high cost, but also in a harsh working environment. Therefore, through the research and application of technologies related to machine vision and autonomous driving, this paper designs an intelligent classification system based on YOLOv5 object detection algorithm and Gmapping laser-SLAM (Simultaneous Localization and Mapping) algorithm to realize full-automation of garbage classification. The system vision module adopts YOLOv5 algorithm and trains the model on self-made garbage classification data set. U sing the trained model, the algorithm can extract the features of different types of garbage images to realize the purpose of garbage detection and classification. The movement control module adopts Gmapping algorithm based on LIDAR (Light Laser Detection and Ranging) to realize the synchronous positioning and map construction in the working environment, thereafter to complete the transportation of garbage. The experimental results show that the classification system designed in this paper can accurately transport the garbage to the destination with good intelligence.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124547417","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977907
Guoshuai Huang, Sijia Li, Tao Tian, Xing Chen, Z. Li, Xiaobin Liu, X. Cao
This letter proposes an active coding-feeding metasurface based on PIN diodes which achieves incidence polarization conversion and radiation manipulation simultaneously. The topological structure of metasurface is designed and its different performances are invested by numerical simulation. The simulation demonstrates that the metasurface can realize polarization conversation at 5.93-6.41 GHz and reflection at 5.93-6.55GHz like a metal plate by switching PIN diodes state and radiate efficiently at 7.27- 7.56GHz and 8.16-8.51GHz. The multifunctional active metasurface will have potential application in radio communication systems.
{"title":"An Active Coding-Feeding Metasurface with Polarization Conversion and Radiation Manipulation","authors":"Guoshuai Huang, Sijia Li, Tao Tian, Xing Chen, Z. Li, Xiaobin Liu, X. Cao","doi":"10.1109/IWS55252.2022.9977907","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977907","url":null,"abstract":"This letter proposes an active coding-feeding metasurface based on PIN diodes which achieves incidence polarization conversion and radiation manipulation simultaneously. The topological structure of metasurface is designed and its different performances are invested by numerical simulation. The simulation demonstrates that the metasurface can realize polarization conversation at 5.93-6.41 GHz and reflection at 5.93-6.55GHz like a metal plate by switching PIN diodes state and radiate efficiently at 7.27- 7.56GHz and 8.16-8.51GHz. The multifunctional active metasurface will have potential application in radio communication systems.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114703693","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977642
Zhengyuan Wan, Yijing He, Jiabiao Zhao, Houjun Sun
A method of blocking coupling current between two ports is offered with high isolation for co-linearly polarized full-duplex patch antenna. Here, such a bi-port patch antenna can be treated as two side-by-side PIF As with zero-distance. By loading a composite decoupling structure along the center of the patch, good isolation is realized within a single-layered substrate and compact size. The proposed decoupling structure consists of lumped capacitors and distributed shorting pins, which essentially behaves as a LC filter. When the LC filter resonates, strong radiation current is mainly centered on half a patch, thus leading to high isolation between the two PIFAs. Simulated results illustrate that the bi-port patch antenna realizes a maximum port isolation, which is superior to 30 dB when it operates at the central frequency of 2.38 GHz within a tight dimension of 0.25 $lambda_{0}times 0.25 lambda_0 times 0.03$ λ0. Owing to these virtues of tight dimension, easy fabrication, and low cost, the proposed antenna promises huge potential usage in in-band full-duplex applications, mobile termi-nals, and other volume-limited communication systems.
{"title":"Compact Co-Linearly Polarized Full-Duplex Patch Antenna with Lumped Capacitors and Single-Layered Substrate","authors":"Zhengyuan Wan, Yijing He, Jiabiao Zhao, Houjun Sun","doi":"10.1109/IWS55252.2022.9977642","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977642","url":null,"abstract":"A method of blocking coupling current between two ports is offered with high isolation for co-linearly polarized full-duplex patch antenna. Here, such a bi-port patch antenna can be treated as two side-by-side PIF As with zero-distance. By loading a composite decoupling structure along the center of the patch, good isolation is realized within a single-layered substrate and compact size. The proposed decoupling structure consists of lumped capacitors and distributed shorting pins, which essentially behaves as a LC filter. When the LC filter resonates, strong radiation current is mainly centered on half a patch, thus leading to high isolation between the two PIFAs. Simulated results illustrate that the bi-port patch antenna realizes a maximum port isolation, which is superior to 30 dB when it operates at the central frequency of 2.38 GHz within a tight dimension of 0.25 $lambda_{0}times 0.25 lambda_0 times 0.03$ λ0. Owing to these virtues of tight dimension, easy fabrication, and low cost, the proposed antenna promises huge potential usage in in-band full-duplex applications, mobile termi-nals, and other volume-limited communication systems.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115737601","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977870
Xun Tian, Yayun Cheng, Jinghui Qiu
Compared with infrared and visible light imaging, passive millimeter-wave (PMMW) imaging has many excellent characteristics, such as better penetration and concealment. Therefore, PMMW imaging has the development potential in personnel security inspection. In recent years, some researchers have explored polarization imaging methods to improve system performance. Based on the measured data of multi-polarization imaging, this paper analyzes the detection performance of concealed objects in different polarization images. Furthermore, we quantitatively compare the receiver operating characteristic (ROC) curves and target contrast ratios of different polarization modes, Stokes parameters and the degree of linear polarization (DOLP). The results show that reasonable selection and fusion of polarization is conducive to giving full play to the advantages of polarization imaging.
{"title":"Concealed Object Detection Performance of Polarimetric Passive Millimeter-Wave Imaging","authors":"Xun Tian, Yayun Cheng, Jinghui Qiu","doi":"10.1109/IWS55252.2022.9977870","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977870","url":null,"abstract":"Compared with infrared and visible light imaging, passive millimeter-wave (PMMW) imaging has many excellent characteristics, such as better penetration and concealment. Therefore, PMMW imaging has the development potential in personnel security inspection. In recent years, some researchers have explored polarization imaging methods to improve system performance. Based on the measured data of multi-polarization imaging, this paper analyzes the detection performance of concealed objects in different polarization images. Furthermore, we quantitatively compare the receiver operating characteristic (ROC) curves and target contrast ratios of different polarization modes, Stokes parameters and the degree of linear polarization (DOLP). The results show that reasonable selection and fusion of polarization is conducive to giving full play to the advantages of polarization imaging.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130246452","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}
This paper presents an experimental retro-reflective beamforming system based on time-reversal for wireless power transmission to multiple target devices. In this experiment, the wireless power transmitter with a four-element antenna array receives pilot signals from three targets, each at a unique frequency. The pilot signals containing multiple frequencies are down-converted to baseband, and then, an FPGA is used to re-verse the baseband signal in time to achieve phase conjugation of the signals at all frequencies. With a digital beamforming circuit architecture, the reversed signals are up-converted, and after amplification, fed to the antenna array. As a result, multiple ret-ro-reflective beams are formed, each at a unique frequency and toward a different target. The results show that the experimental system is able to simultaneously focus power onto three targets dynamically, which validates the effectiveness of the multi-target retro-reflective beamforming schemes.
{"title":"Retro-reflective Beamforming to Multiple Targets Based on Time-reversal for Microwave Power Transmission","authors":"Ying Jiang, Bing Liu, Wenbo Li, Bowen Zhu, Jialin Cao, Xin Wang","doi":"10.1109/IWS55252.2022.9977830","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977830","url":null,"abstract":"This paper presents an experimental retro-reflective beamforming system based on time-reversal for wireless power transmission to multiple target devices. In this experiment, the wireless power transmitter with a four-element antenna array receives pilot signals from three targets, each at a unique frequency. The pilot signals containing multiple frequencies are down-converted to baseband, and then, an FPGA is used to re-verse the baseband signal in time to achieve phase conjugation of the signals at all frequencies. With a digital beamforming circuit architecture, the reversed signals are up-converted, and after amplification, fed to the antenna array. As a result, multiple ret-ro-reflective beams are formed, each at a unique frequency and toward a different target. The results show that the experimental system is able to simultaneously focus power onto three targets dynamically, which validates the effectiveness of the multi-target retro-reflective beamforming schemes.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129980015","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977943
Haizhuo He, Hongjun Chu, Rui Pan, Linting Ye, Kang Zhang, Weichu Chen, Peng Zhang, Shengchang Lan
Sign language, as the main means of communication used by hearing-impaired people, is an indispensable part for them to better integrate into a harmonious society. At the same time, the all-round development of today's society urgently needs to build a bridge for the hearing impaired to communicate with the society, create a barrier-free environment, and increase the degree of socialization of the hearing impaired. All these factors promote the demand for direct human-computer interaction in sign language. This paper aims to explore the electromagnetic representation and interpretation of sign language semantics, hoping to provide a new way to improve the level of human-computer interaction and care for the hearing impaired.
{"title":"Overview of Electromagnetic Representation and Interpretation of Sign Language Semantics","authors":"Haizhuo He, Hongjun Chu, Rui Pan, Linting Ye, Kang Zhang, Weichu Chen, Peng Zhang, Shengchang Lan","doi":"10.1109/IWS55252.2022.9977943","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977943","url":null,"abstract":"Sign language, as the main means of communication used by hearing-impaired people, is an indispensable part for them to better integrate into a harmonious society. At the same time, the all-round development of today's society urgently needs to build a bridge for the hearing impaired to communicate with the society, create a barrier-free environment, and increase the degree of socialization of the hearing impaired. All these factors promote the demand for direct human-computer interaction in sign language. This paper aims to explore the electromagnetic representation and interpretation of sign language semantics, hoping to provide a new way to improve the level of human-computer interaction and care for the hearing impaired.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130761558","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9978009
Hui-fen Huang, Xiu–Ling Tang
In this paper, broadband dual tilted Bessel beams with the aid of a polarization conversion meta-surface is generated. The transmission meta-surface consists of 32*32 subwavelength unit cells, which can effectively convert incident linear polarized wave to zero order Bessel beam with different direction based on time reversal. The designed three-layer unit cell combining mirrored and size changed approach can meet the need of full 360° phase coverage from 10GHz to 18GHz with high transmission magnitude (>0.9). The developed dual Bessel beams propagate along the $mathrm{e}=30^{mathrm{o}}, varphi=45^{mathrm{o}}$ and $Theta=-30_{J}varphi=180^{mathrm{o}}$.And their simulated magnitude distributions in near field are provided.
{"title":"Generation of Broadband Dual Tilted Bessel Beams with Polarization Conversion Metasurface","authors":"Hui-fen Huang, Xiu–Ling Tang","doi":"10.1109/IWS55252.2022.9978009","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9978009","url":null,"abstract":"In this paper, broadband dual tilted Bessel beams with the aid of a polarization conversion meta-surface is generated. The transmission meta-surface consists of 32*32 subwavelength unit cells, which can effectively convert incident linear polarized wave to zero order Bessel beam with different direction based on time reversal. The designed three-layer unit cell combining mirrored and size changed approach can meet the need of full 360° phase coverage from 10GHz to 18GHz with high transmission magnitude (>0.9). The developed dual Bessel beams propagate along the $mathrm{e}=30^{mathrm{o}}, varphi=45^{mathrm{o}}$ and $Theta=-30_{J}varphi=180^{mathrm{o}}$.And their simulated magnitude distributions in near field are provided.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123003855","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9978109
Lin Gu, Yuandan Dong
In this paper, based on a hybrid structure using the patch resonator and substrate integrated waveguide (SIW) cavity, a compact bandpass filter (BPF) with a wide stopband is proposed. The patch resonator is connected with two SIW cavities by coplanar waveguide lines at both ends. It can not only extend the order of the proposed filter but also suppress the TE201and TE202 modes of the SIW cavity. In addition, the offset orthogonal ports can prevent the propagation of the $mathbf{TE}_{102}$ mode of the SIW cavities. Thus, a wide stopband is achieved by suppressing the first three spurious modes. For validation, a prototype was fabricated and measured.
{"title":"Circular Patch Resonator Loaded Compact SIW Filter with Harmonic Suppression","authors":"Lin Gu, Yuandan Dong","doi":"10.1109/IWS55252.2022.9978109","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9978109","url":null,"abstract":"In this paper, based on a hybrid structure using the patch resonator and substrate integrated waveguide (SIW) cavity, a compact bandpass filter (BPF) with a wide stopband is proposed. The patch resonator is connected with two SIW cavities by coplanar waveguide lines at both ends. It can not only extend the order of the proposed filter but also suppress the TE201and TE202 modes of the SIW cavity. In addition, the offset orthogonal ports can prevent the propagation of the $mathbf{TE}_{102}$ mode of the SIW cavities. Thus, a wide stopband is achieved by suppressing the first three spurious modes. For validation, a prototype was fabricated and measured.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127751124","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9977587
Jingyuan Zhang, Xu Yan, Haorui Luo, Yongxin Guo
This paper reports on a Ku-band high-power amplifier (HPA) monolithic microwave integrated circuit (MMIC) on 150-nm GaN-SiC high electron mobility transistor (HEMT) process, which exhibits high output power (13 W Psat) and high efficiency (45 % peak PAE) under pulse simulation with 100 $mumathrm{s}$ period and 10 % duty cycle. By employing wideband matching networks (MNs), the proposed HPA achieves 39.2 ‘” 41.2 dBm Pout and 35.7% ~ 45.4% PAE from 14.0 to 18.0 GHz. Power gain exceeds 17 dB in the operating band. The HPA chip dimensions are 2.55 mm by 1.3 mm. These results provide the potential for this HP A to be applied in satellite communications (SATCOM).
{"title":"High Efficiency Ku-Band 13 W GaN HEMT HPA","authors":"Jingyuan Zhang, Xu Yan, Haorui Luo, Yongxin Guo","doi":"10.1109/IWS55252.2022.9977587","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9977587","url":null,"abstract":"This paper reports on a Ku-band high-power amplifier (HPA) monolithic microwave integrated circuit (MMIC) on 150-nm GaN-SiC high electron mobility transistor (HEMT) process, which exhibits high output power (13 W Psat) and high efficiency (45 % peak PAE) under pulse simulation with 100 $mumathrm{s}$ period and 10 % duty cycle. By employing wideband matching networks (MNs), the proposed HPA achieves 39.2 ‘” 41.2 dBm Pout and 35.7% ~ 45.4% PAE from 14.0 to 18.0 GHz. Power gain exceeds 17 dB in the operating band. The HPA chip dimensions are 2.55 mm by 1.3 mm. These results provide the potential for this HP A to be applied in satellite communications (SATCOM).","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131401901","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 : 2022-08-12DOI: 10.1109/IWS55252.2022.9978070
Rui Duan, Bing Zhang
A leaky-wave antenna (LWA) based on half-mode substrate integrated waveguide (HMSIW) is proposed. The integrated phase inverters are used to eliminate half-wave offset from adjacent radiating elements. The ground plane is extended to reflect the quasi-magnetic dipole radiation pattern from the backfire to the porthole to enhance the antenna gain. Two linear arrays with differential feeding network are placed back-to-back along their longitude, by which the far-field radiation adds greatly that leads to further increased antenna gain. A manufactured prototype was tested to validate the concept.
{"title":"A High-gain Half-Mode SIW Leaky-wave Antenna","authors":"Rui Duan, Bing Zhang","doi":"10.1109/IWS55252.2022.9978070","DOIUrl":"https://doi.org/10.1109/IWS55252.2022.9978070","url":null,"abstract":"A leaky-wave antenna (LWA) based on half-mode substrate integrated waveguide (HMSIW) is proposed. The integrated phase inverters are used to eliminate half-wave offset from adjacent radiating elements. The ground plane is extended to reflect the quasi-magnetic dipole radiation pattern from the backfire to the porthole to enhance the antenna gain. Two linear arrays with differential feeding network are placed back-to-back along their longitude, by which the far-field radiation adds greatly that leads to further increased antenna gain. A manufactured prototype was tested to validate the concept.","PeriodicalId":126964,"journal":{"name":"2022 IEEE MTT-S International Wireless Symposium (IWS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123024740","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}
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