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2020 IEEE MTT-S International Wireless Symposium (IWS)最新文献

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Half-Power Phase Shifter for the Design of A Wideband Circularly Polarized Antenna 宽带圆极化天线设计中的半功率移相器
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360088
Lehu Wen, S. Gao, Hu Li, Qingling Yang, Q. Luo, Yingzeng Yin, Jian Wu, Xiaofei Ren
{"title":"Half-Power Phase Shifter for the Design of A Wideband Circularly Polarized Antenna","authors":"Lehu Wen, S. Gao, Hu Li, Qingling Yang, Q. Luo, Yingzeng Yin, Jian Wu, Xiaofei Ren","doi":"10.1109/IWS49314.2020.9360088","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360088","url":null,"abstract":"This paper presents a concept of using half-power phase shifter to design a circularly polarized (CP) antenna. The half-power phase shifter is composed of an open slot and a microstrip line. By elaborately loading the open slot under the microstrip line, half-power energy is radiated and half-power energy is transmitted to the end. Interestingly, the transmission phase bandwidth obtained at the end is significantly increased owing to the loading of the open slot. By using this design method, a wideband CP antenna is developed, which is composed of a pair of wide slots and a pair of narrow slot. The narrow slot pair is loaded not only for radiation, but also for the wideband quadrature phase transmission to the wide slot pair. The developed CP was finally fabricated and measured to verify the design concept. Both the measured and simulated results show that the developed antenna can have a wide AR and impedance bandwidth from 1.95 GHz to 3.45 GHz.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126909330","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
Capacitor-Loaded Coupled Line Balanced Bandpass Filter 电容负载耦合线平衡带通滤波器
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359975
Jiancheng Dong, Jin Shi, Kai Xu
{"title":"Capacitor-Loaded Coupled Line Balanced Bandpass Filter","authors":"Jiancheng Dong, Jin Shi, Kai Xu","doi":"10.1109/IWS49314.2020.9359975","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359975","url":null,"abstract":"Balanced bandpass filter has been applied widely in modern communication systems due to their ability of differential-mode filtering function and common-mode suppression. For the balanced bandpass filter, compact size becomes essential with the increasing requirement of system miniaturization. In this paper, balanced bandpass filter based on capactior-loaded coupled microstrip lines is proposed. Benefitting from the structure, the proposed design has the advantages of compact size and low loss. A prototype of the proposed balanced bandpass filter is fabricated, and the measured results agree well with the simulated results.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122095396","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
The Fast Physical Optics Method for Calculating the Scattered Field From the Rough Surface 计算粗糙表面散射场的快速物理光学方法
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359992
Feng-hua Song, Yumao Wu, Yaqiu Jin
{"title":"The Fast Physical Optics Method for Calculating the Scattered Field From the Rough Surface","authors":"Feng-hua Song, Yumao Wu, Yaqiu Jin","doi":"10.1109/IWS49314.2020.9359992","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359992","url":null,"abstract":"In this paper, the fast physical optics (FPO) method for the scattering field of rough surface is proposed. The surface is discretized by quadratic patches. After transforming it into parameter coordinate system, the amplitude and function of physical optical integration are approximated by Lagrange interpolation polynomials. Finally, the closed-form formulas of FPO is obtained by using the complementary error function. Compared with the traditional method, FPO method can greatly reduce the number of patches when it is discrete, and the accuracy is within the acceptable error range. Numerical examples show the effectiveness of the proposed FPO method in accuracy.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126510230","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 Synchronization Design of Multi-channel Digital TR Module for Phased Array Radar 相控阵雷达多通道数字TR模块同步设计
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360030
Shuai Ji, Jianling Kang, Y. Guan
{"title":"The Synchronization Design of Multi-channel Digital TR Module for Phased Array Radar","authors":"Shuai Ji, Jianling Kang, Y. Guan","doi":"10.1109/IWS49314.2020.9360030","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360030","url":null,"abstract":"Multi-channel synchronization is a key problem in the design of digital phased array radar. The synchronization performance between transmitting channels directly affects the space synthesis of transmitting signals, resulting in the decrease of beam gain and pointing performance. The synchronization index between receiving channels will affect the performance of receiving beam and lead to the decrease of system Angle measurement performance. Aiming at the synchronization problem under the background of multi-channel high-speed sampling rate, this paper puts forward the corresponding synchronization design, which solves the core problems such as inter-channel clock synchronization, baseband data synchronization and NCO synchronization, and can provide reference for the synchronization design of related phased array radar.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"2015 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134476576","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
Realtime Multi-target Vital Sign Detection with 79GHz FMCW Radar 基于79GHz FMCW雷达的实时多目标生命体征检测
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359969
Jinyi Wei, Libo Huang, Panpan Tong, Bin Tan, Jie Bai, ZhiJun Wu
{"title":"Realtime Multi-target Vital Sign Detection with 79GHz FMCW Radar","authors":"Jinyi Wei, Libo Huang, Panpan Tong, Bin Tan, Jie Bai, ZhiJun Wu","doi":"10.1109/IWS49314.2020.9359969","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359969","url":null,"abstract":"In this paper, multi-target vital signs are detected by a 79GHz frequency modulation continuous wave (FMCW) radar. Compared with existing methods, this system could track multitarget vital signs accurately in real time with cost-effective and simple method. In order to avoid interference of static objects, moving target indication (MTI) is implemented to subtract background clutter. In addition, variable detection threshold is adopted which changes inversely with detection range, so that distant target can be detected even though its amplitude attenuates greatly. After target detection and tracking, phase information is extracted from corresponding range bins. Two simple but efficient methods including fast Fourier transform (FFT) and autocorrelation are implemented and their confidence degrees are calculated to determine the final breath and heart rate. Experiments show that this novel signal processing can achieve high accuracy and real-time performance for multi-target vital sign detection.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132680133","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
Design of Wideband Filtering Power Divider with Compact Size and High Isolation 尺寸紧凑、隔离度高的宽带滤波功率分压器设计
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360044
Xuedao Wang, Jianpeng Wang, Lei Zhu, Wen Wu
{"title":"Design of Wideband Filtering Power Divider with Compact Size and High Isolation","authors":"Xuedao Wang, Jianpeng Wang, Lei Zhu, Wen Wu","doi":"10.1109/IWS49314.2020.9360044","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360044","url":null,"abstract":"A compact wideband filtering power divider (FPD) with high isolation is designed based on a microstrip line (MSL) and coplanar waveguide (CPW) hybrid structure. By virtue of the broadside coupling, a three-port filtering network is wisely constructed with three parallel microstrip feeding lines and one CPW quarter-wavelength resonator. Then, to achieve the port-to-port isolation, a lumped resistor is loaded between the two ends of the output feeding lines. To explain the working principles of filtering and isolation, the even-/odd-mode analysis method is adopted. For demonstration, a prototype of wideband FPD operating at 2 GHz with a 3-dB fractional bandwidth of 100% is designed, fabricated and tested. Final circuit dimension is only 0.2 9λgXO.07λg, where λg is the guided wavelength at the center frequency. Measured results indicate that the proposed wideband FPD has achieved 18-dB return loss and 21-dB in-band isolation.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"380 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133427459","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
Dual-Band Orbital Angular Momentum Beam Generator base on the 2-Bit Reflective Metasurface 基于2位反射超表面的双带轨道角动量光束发生器
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360056
Mingbo Xin, Yiting Liu, Rensheng Xie, Xin Fang, Guohua Zhai, Jianjun Gao, Jun Ding
{"title":"Dual-Band Orbital Angular Momentum Beam Generator base on the 2-Bit Reflective Metasurface","authors":"Mingbo Xin, Yiting Liu, Rensheng Xie, Xin Fang, Guohua Zhai, Jianjun Gao, Jun Ding","doi":"10.1109/IWS49314.2020.9360056","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360056","url":null,"abstract":"Orbital angular momentum (OAM) beam has attracted great attention because it can be utilized to improve wireless communication capacity. Therefore, the realization of OAM wave manipulation is of great significance to the development of communication. In this work, a dual-band OAM beam generator is proposed based on the 2-bit reflective metasurface. By arranging the proper phasing elements on the metasurface, we can manipulate the mode and direction of OAM beams at two different frequencies. The simulation results demonstrate that the metasurface has a good performance in generating dual-band vortex beam.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134309405","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
Generation of Vortex Beams with Mixed Modes based on Non-Uniform Circular Array 基于非均匀圆阵列的混合模式涡束的产生
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360138
Hao Xue, Jun Liang, Dezhi Zhang, Rui Xi, Q. Feng, Long Li
{"title":"Generation of Vortex Beams with Mixed Modes based on Non-Uniform Circular Array","authors":"Hao Xue, Jun Liang, Dezhi Zhang, Rui Xi, Q. Feng, Long Li","doi":"10.1109/IWS49314.2020.9360138","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360138","url":null,"abstract":"Vortex beams with mixed modes refer to the superposition of single vortex beams with different OAM modes. In order to facilitate the researches on the transmission characteristics, receiving methods, and demultiplexing methods of the vortex beams with mixed modes, it's necessary to design simple devices to generate them. According to this, this paper proposes a novel non-uniform circular array (NUCA) for generating vortex beams with mixed modes based on a phase modulation method. This method is corresponding to the feeding network which only needs equal power feeding. And the element of the NUCA is an E-type broadband air dielectric antenna working at 1.9-2.4GHz, which has the characteristics of wide frequency band, light weight, and easy processing. So that the device in this paper is simple and effective to generate vortex beams with mixed modes.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132157637","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
Comparative Design of 28 GHz SPDT Switches with GaAs Passive pHEMTs and Diodes 采用GaAs无源phemt和二极管的28 GHz SPDT开关的比较设计
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360018
Yi-Tong Wang, Linsheng Wu, J. Mao
{"title":"Comparative Design of 28 GHz SPDT Switches with GaAs Passive pHEMTs and Diodes","authors":"Yi-Tong Wang, Linsheng Wu, J. Mao","doi":"10.1109/IWS49314.2020.9360018","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360018","url":null,"abstract":"This paper presents and compares four designs of single-pole double-throw (SPDT) switches at 28 GHz with diodes or passive pHEMTs in the 0.15 µm GaAs process. Both the λ/4 shunt and series-shunt topologies are adopted. The equivalent circuit models show that pHEMTs have larger parasitic OFF-state capacitances but with simple design of biasing network and easy cancellation of parasitic effect. Series capacitors and parallel inductors are applied in these switches to compensate parasitic effects. In the 5G millimeter-wave band, the series-shunt type SPDT switch with pHEMTs shows comparable isolation performance to other designs, with the insertion loss of 1.5 dB and the smallest area of 0.10 mm2, which is demonstrated by the good agreement between the simulated and measured results.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133722224","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
Bandwidth Enhanced Doherty Power Amplifier Based on Coupled Phase Compensation Network With Specific Optimal Impedance 基于特定最优阻抗耦合相位补偿网络的带宽增强Doherty功率放大器
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359947
X. Zhou, W. Chan, W. Feng, Xiaohu Fang, Tushar Sharmar, Zheng Liu
{"title":"Bandwidth Enhanced Doherty Power Amplifier Based on Coupled Phase Compensation Network With Specific Optimal Impedance","authors":"X. Zhou, W. Chan, W. Feng, Xiaohu Fang, Tushar Sharmar, Zheng Liu","doi":"10.1109/IWS49314.2020.9359947","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359947","url":null,"abstract":"This paper presents a new technique to dramatically enhance the bandwidth of a post-matching Doherty power amplifier (PM-DPA). This technique relies on using a coupled-line phase compensation network (PCN). Through a theoretical analysis, we first point out this coupled-line PCN can offer wideband impedance matching due to its capacity in reducing the external Q-factor of the peaking branch. Then, our analysis guides the derivation of closed-form formulas that help to determine the physical parameters of the coupled PCN. Finally, when augmented with suitable selected peaking amplifier impedances, the proposed technique allows improved peak efficiency and output power over extended bandwidth. For experimental verification, A DPA based on commercially available GaN high-electron-mobility transistor (HEMT) devices (Cree CGH 40010F) has been designed and fabricated. Measured results of the proposed DPA shows 6 dB back-off operation between 1.3 - 2.3 GHz (55% fractional bandwidth) with efficiency in excess of 41%.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121592790","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
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