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2020 IEEE Asia-Pacific Microwave Conference (APMC)最新文献

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Space Scanning SSPPs Antenna with Phase Mode by Dual-Port Feeding 双端口馈入空间扫描SSPPs相模天线
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331524
Z. Jing, Jun-ping Geng, Kun Wang, Han Zhou, Chaofan Ren, Silei Yang, Xianling Liang, R. Jin
{"title":"Space Scanning SSPPs Antenna with Phase Mode by Dual-Port Feeding","authors":"Z. Jing, Jun-ping Geng, Kun Wang, Han Zhou, Chaofan Ren, Silei Yang, Xianling Liang, R. Jin","doi":"10.1109/APMC47863.2020.9331524","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331524","url":null,"abstract":"A space scanning SSPPs antenna with phase mode by dual-port feeding is proposed. The antenna is composed of two trapezoidal monopoles, four loaded circular patches, a symmetrical SSPPs transmission line and two diamond modulation structures. By changing the phase difference between the two feeding ports to generate the odd mode, even mode and mixed modes of SSPPs, beam scanning in wide 3-D space range was realized, within the frequency band of 4.4 $sim$ 538 GHz.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114299546","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
System Impacts of User Scheduling with Minimal Angular Separation Constraints in Radio Resource Management for 5G and Beyond 最小角度分离约束下5G及以后无线资源管理中用户调度的系统影响
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331434
Y. Aslan, A. Roederer, A. Yarovoy
{"title":"System Impacts of User Scheduling with Minimal Angular Separation Constraints in Radio Resource Management for 5G and Beyond","authors":"Y. Aslan, A. Roederer, A. Yarovoy","doi":"10.1109/APMC47863.2020.9331434","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331434","url":null,"abstract":"The system effects and trade-offs of varying the minimal angular separation among multiple simultaneous cofrequency users are investigated for a high-capacity multibeam communication scenario. Through the statistical system simulations, it is demonstrated that the optimal (non-zero) value of the required separation depends on the base station array size, number of users, precoding technique, desired probability of coverage and intended quality of service.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114475607","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
Power Scalable Behavioral Model in Digital Predistortion for Power Amplifiers 功率放大器数字预失真中的功率可扩展行为模型
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331477
Jiayan Wu, Songbai He, Jun Peng, Caoyu Li, F. You
{"title":"Power Scalable Behavioral Model in Digital Predistortion for Power Amplifiers","authors":"Jiayan Wu, Songbai He, Jun Peng, Caoyu Li, F. You","doi":"10.1109/APMC47863.2020.9331477","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331477","url":null,"abstract":"In this paper, power scalable models based on wiener structure model and reverse twin nonlinear two-box (RT-NTB) structure model are proposed for dynamic power transmission. Benefit from the separation of static distortions and dynamic distortions in box-oriented models and the application of coefficients interpolation, the proposed models significantly reduce the number of coefficients needed to be updated and extracted. Experiments have been carried out on a Gallium Nitride (GaN) power amplifier (PA) to show that proposed models can achieve the near linearization effect as conventional models, even though coefficients needed update when the average power changes decrease to 70% and 44% respectively for wiener structure and RTNTB structure models. Besides, coefficients needed extraction in proposed models are only 26% and 19% of that in the conventional models.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121895496","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 Miniaturized Bandpass Filter with Wideband and High Stopband Rejection Using LTCC Technology 基于LTCC技术的小型宽带高阻带带通滤波器
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331384
Shuangxu Li, Kaixue Ma, Xiong Chen, Ningning Yan, Haipeng Fu
{"title":"A Miniaturized Bandpass Filter with Wideband and High Stopband Rejection Using LTCC Technology","authors":"Shuangxu Li, Kaixue Ma, Xiong Chen, Ningning Yan, Haipeng Fu","doi":"10.1109/APMC47863.2020.9331384","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331384","url":null,"abstract":"A compact low-temperature co-fire ceramic (LTCC) bandpass filter based on quarter-wavelength steppedimpedance resonators (SIRs) and lowpass loading cells with improved wideband and high stopband rejection level is proposed and demonstrated in this work. In the implementation, two low impedance SIRs are placed on different layers, they generate strong capacitive coupling and form a wide passband. Further, the width of the stopband is improved by loading lowpass cells, while two extra poles formed to improve the passband response simultaneously. The final simulation proves the proposed filter has a passband bandwidth of 67.5%, while the circuit size is only 1.68mm×0.8mm×0.48mm, which has clear advantage in bandwidth and size to other similar LTCC based filters.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129870632","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
Analysis of Triple-Polarized Antenna Systems Using Electromagnetic Information Theory 用电磁信息论分析三极化天线系统
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331541
Qian Zhu, Rui Ni, Yi Lv
{"title":"Analysis of Triple-Polarized Antenna Systems Using Electromagnetic Information Theory","authors":"Qian Zhu, Rui Ni, Yi Lv","doi":"10.1109/APMC47863.2020.9331541","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331541","url":null,"abstract":"Electromagnetic information theory is explored by considering the vector field distribution in MIMO systems. In order to fully utilize the polarization diversity, the uniform circular arrays with triple-polarized dipoles with derived radiation patterns are analyzed in line-of-sight channel condition. It is shown that the triple-polarized dipoles exhibit higher spectrum efficiency than dual-polarized ones when the transmitter and receiver are offset with each other. Besides, to generate triple-polarized waves, a compact four-port magneto-electric dipole antenna is proposed at 28 GHz.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128239131","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 Study on Forecasting of Available Spectrum Resources for Sharing using Envelope Extraction 基于包络提取的频谱资源共享预测研究
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331601
Tatsuya Nagao, Takahiro Hayashi, Y. Amano
{"title":"A Study on Forecasting of Available Spectrum Resources for Sharing using Envelope Extraction","authors":"Tatsuya Nagao, Takahiro Hayashi, Y. Amano","doi":"10.1109/APMC47863.2020.9331601","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331601","url":null,"abstract":"In recent years, the demand for spectrum resources has been increasing, which has raised expectations for dynamic spectrum access (DSA). DSA is a technique for allowing secondary systems to use the same spectrum band at locations and times when the primary system is not used. In conventional DSA systems, the protection area has been set conservatively wide in anticipation of the worst case scenarios. Meanwhile, especially in the millimeter-wave band, which is expected to be used more in the future, it is greatly affected by the surrounding environment, such as the number of people and vehicles. As a result, the coverage of radio waves varies depending on environmental changes. Hence, by considering the temporal changes caused by the variations described above, it is possible to detect additional spectrum resources that will be newly available to the secondary system, allowing for more dynamic sharing. In this paper, we propose a method for predicting the received power of the primary system, which varies with environmental changes, using machine learning, and detecting future available spectrum resources. In order to reduce the False Detection Rate, which causes a risk of intersystem interference, while maintaining the Detection Rate of available spectrum resources, the proposed method performs time series prediction after extracting the envelope from the time series data of received power. The evaluation by simulation results showed that the proposed method can reduce the false detection rate of available resources by about 9%.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128369247","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
Transmitarray Antenna for Generating Multiple OAM Modes 用于产生多个OAM模式的发射阵列天线
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331468
Gengbo Wu, K. Chan, K. Shum, C. Chan
{"title":"Transmitarray Antenna for Generating Multiple OAM Modes","authors":"Gengbo Wu, K. Chan, K. Shum, C. Chan","doi":"10.1109/APMC47863.2020.9331468","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331468","url":null,"abstract":"This paper introduces a novel transmitarray antenna for generating two coaxially propagating orbital angular momentum (OAM) modes with same polarization at 60 GHz. Each OAM mode corresponds to an independent communication channel. The design ed transmitarray can compensate for the spatial phase delays from the two feed sources at different positions and generate vortex waves with two different OAM numbers simultaneously. Measured results of the transmitarray antenna prototype show that it can successfully generate two independent OAM modes with mode number l = -1 and +1 simultaneously. The introduced transmitarray antenna can find promising applications in millimeter-wave (mmW) high-speed OAM-based mode-division-multiplexing wireless communications.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"420 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128735506","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
Comparison of Vector Fitting and Contour Integration Methods for Pole-Zero Analysis of Microwave Filters 微波滤波器极零分析的矢量拟合与轮廓积分方法比较
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/apmc47863.2020.9331356
E. L. Tan, Ding Yu Heh
{"title":"Comparison of Vector Fitting and Contour Integration Methods for Pole-Zero Analysis of Microwave Filters","authors":"E. L. Tan, Ding Yu Heh","doi":"10.1109/apmc47863.2020.9331356","DOIUrl":"https://doi.org/10.1109/apmc47863.2020.9331356","url":null,"abstract":"This paper presents the comparison of vector fitting and contour integration methods for pole-zero analysis of microwave filters. Two cases of microwave filters are considered, which include an all-pole classical coupled line filter and a linear phase filter with complex zeros. The poles and zeros obtained using vector fitting method with different chosen number of poles and fitting bandwidth are analyzed. It is found that the poles and zeros may be inconsistent depending on the chosen number of poles and bandwidth. Furthermore, the method may introduce spurious complex zeros that do not satisfy the S parameters unitary conditions, while the poles also do not maintain periodicity between frequency bands for transmission line structures. On the other hand, the poles and zeros obtained using contour integration method are consistent and certain. They also satisfy the unitary conditions and periodicity for transmission line structures.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"328 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124624523","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
Recent Developments and Future Challenges of Differential Phase Shifters 差分移相器的最新发展和未来挑战
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331586
S. Zheng
{"title":"Recent Developments and Future Challenges of Differential Phase Shifters","authors":"S. Zheng","doi":"10.1109/APMC47863.2020.9331586","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331586","url":null,"abstract":"The flexible tuning of the phase difference with low variation over a wide bandwidth is highly demanded in the emerging wireless systems. However, these work mainly focus on the purely passive components. In this paper, the recent developments and future challenges of differential phase shifters are summarized.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124690943","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
Low Profile Vertically Polarized Antenna with Endfire Radiation for 28 GHz Application 面向28 GHz终端辐射的低轮廓垂直极化天线
2020 IEEE Asia-Pacific Microwave Conference (APMC) Pub Date : 2020-12-08 DOI: 10.1109/APMC47863.2020.9331508
Lishun Ke, S. Liao, Wenhai Zhang, Q. Xue, W. Che
{"title":"Low Profile Vertically Polarized Antenna with Endfire Radiation for 28 GHz Application","authors":"Lishun Ke, S. Liao, Wenhai Zhang, Q. Xue, W. Che","doi":"10.1109/APMC47863.2020.9331508","DOIUrl":"https://doi.org/10.1109/APMC47863.2020.9331508","url":null,"abstract":"This paper proposes a low profile vertically polarized antenna with end-fire radiation at 28 GHz. A reshaped quasi-PIFA antenna is applied to serve as a driving element with L-shaped feeding structure firstly. Then, two groups of patches are utilized to further improve the bandwidth and gain. Finally, the antenna is designed by low temperature co-fired ceramic (LTCC) process technology. Numerical results highlight that, with a height of 0.076λ0 (λ0 is the free-space wavelength of 27GHz), the proposed antenna features a wide bandwidth up to 20% as well as the realized gain ranging from 2.8-6.3dBi within the operating band.","PeriodicalId":413224,"journal":{"name":"2020 IEEE Asia-Pacific Microwave Conference (APMC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129232791","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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