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2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)最新文献

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Deployable and Reconfigurable Miura-Ori Reflectarray for Mission-Flexible Satellite Applications 用于任务柔性卫星应用的可部署和可重构的Miura-Ori反射器
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493295
C. A. Velez, Abdul-Sattar Kaddour, Collin Ynchausti, L. Howell, S. Magleby, S. Georgakopoulos
{"title":"Deployable and Reconfigurable Miura-Ori Reflectarray for Mission-Flexible Satellite Applications","authors":"C. A. Velez, Abdul-Sattar Kaddour, Collin Ynchausti, L. Howell, S. Magleby, S. Georgakopoulos","doi":"10.1109/WMCS52222.2021.9493295","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493295","url":null,"abstract":"A novel foldable and reconfigurable reflectarray antenna (RA), operating at 8.425GHz for deep space communications based on an extended Miura-Ori origami pattern is presented. The aperture leverages the properties of subdivision and a folding feature to create a packable and reconfigurable antenna capable of changing its beam from a single pencil beam to a multi-beam aperture with beamsteering ability. A mechanical and theoretical EM analysis is carried out supported by a numerical algorithm using array theory. The results show that the proposed reflectarray can achieve a high packing efficiency of 92%. This RA provides a pencil beam in the broadside at (θ = 0°, ϕ = 0) in its flat configuration and multi-beam (dual, triple and quad-beams) depending on its folding angle. For CubeSat applications, the key advantages of this RA are its decreased stowage volume, reconfigurable EM performance, beamsteering capabilities, low fabrication cost, and reduced complexity.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128572508","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
A Parasitic Patch Antenna System with High Isolation for Full Duplex Application 一种全双工高隔离寄生贴片天线系统
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493280
Abdul Rakib Hossain, T. Nguyen, T. Karacolak
{"title":"A Parasitic Patch Antenna System with High Isolation for Full Duplex Application","authors":"Abdul Rakib Hossain, T. Nguyen, T. Karacolak","doi":"10.1109/WMCS52222.2021.9493280","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493280","url":null,"abstract":"This paper proposes a D-Shaped parasitic patch antenna fed with a 180° hybrid coupler for full duplex communication. This antenna has three layers of substrates. Over the top layer, there are three parasitic patches one is D shaped and the other two are rectangular shapes which are used to improve the bandwidth. A Hybrid coupler is on the bottom of the third layer. The proposed antenna has a bandwidth of 130 MHz from 2.31 GHz to 2.44 GHz with less than -50 dB isolation. It has gain over 4 dB for both TX and RX in 2.375 GHz which is the center frequency for this antenna.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128591982","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
Recursive Interval-Halving Method for Generating Model Independent Impedance Tuner Characterizations 生成模型无关阻抗调谐器特性的递归间隔减半方法
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493222
Austin Egbert, C. Baylis, A. Martone, R. Marks
{"title":"Recursive Interval-Halving Method for Generating Model Independent Impedance Tuner Characterizations","authors":"Austin Egbert, C. Baylis, A. Martone, R. Marks","doi":"10.1109/WMCS52222.2021.9493222","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493222","url":null,"abstract":"Existing impedance tuners are often able to utilize characterization processes that model the underlying behavior of the tuner's fundamental parameters to efficiently select a range of parameter settings that evenly span the device's potential impedance characteristics. However, new tuner implementations cannot take advantage of these processes without preestablished knowledge of their underlying behavior, and this behavior can be difficult to efficiently and reliably model. In such circumstances, a modelless characterization process is required to determine the device settings needed to span its possible impedance values efficiently and evenly. Here, a process using a recursive interval-halving approach is demonstrated for characterizing impedance tuners without the use of a model.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"130 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130218228","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
A Physically Reconfigurable Origami Reflectarray Based on the Augmented Square Twist Pattern 一种基于增广方形扭曲模式的可物理重构折纸反射射线
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493220
Antonio J. Rubio, Abdul-Sattar Kaddour, Nathan C. Brown, L. Howell, S. Magleby, S. Georgakopoulos
{"title":"A Physically Reconfigurable Origami Reflectarray Based on the Augmented Square Twist Pattern","authors":"Antonio J. Rubio, Abdul-Sattar Kaddour, Nathan C. Brown, L. Howell, S. Magleby, S. Georgakopoulos","doi":"10.1109/WMCS52222.2021.9493220","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493220","url":null,"abstract":"This paper proposes a novel mechanically frequency reconfigurable high-gain Reflectarray Antenna (RA) design, which is based on the Augmented Square Twist (AST) origami folding pattern. The RA was designed to operate at two operating frequencies, 20 GHz (lower band) and 40 GHz (upper band) in its unfolded and folded states, respectively. The main beam is directed along φ = 90°, θ = 30° at the lower band and φ = 90°, θ = 20° at the upper band. The RA was excited by a 15 dBi linearly polarized standard gain horn antenna positioned at a focal distance of 9.6λ with a 20° offset angle. The proposed origami RA achieved a gain of 27.0 dBi and 28.6 dBi at its unfolded and folded states, respectively.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114981418","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
A Novel Tunable Phase Shifter with Distributed Capacitive Loading 一种新型分布式电容负载可调移相器
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493281
Guang Yang, C. S. Lee, M. Ezzat, Linsheng Zhang
{"title":"A Novel Tunable Phase Shifter with Distributed Capacitive Loading","authors":"Guang Yang, C. S. Lee, M. Ezzat, Linsheng Zhang","doi":"10.1109/WMCS52222.2021.9493281","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493281","url":null,"abstract":"A novel but simple design of transmission line with a parasitic patch that works as a phase shifter at the frequency range of 1.5 - 3 GHz is presented. Variable capacitors attached to a parasitic element above the transmission line change the phase of the propagating wave with minimum reflection. A 90 degree of phase shift is achieved with capacitance of 4.5 pF variation.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124462355","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
A V-Band GaN Power Amplifier with 34.9% PAE and 35.1 dBm Output Power 一种具有34.9% PAE和35.1 dBm输出功率的v波段GaN功率放大器
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493300
Pouria Pazhouhesh, J. Kitchen
{"title":"A V-Band GaN Power Amplifier with 34.9% PAE and 35.1 dBm Output Power","authors":"Pouria Pazhouhesh, J. Kitchen","doi":"10.1109/WMCS52222.2021.9493300","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493300","url":null,"abstract":"This work presents a high efficiency, highest reported output power GaN-based power amplifier targeting the V-band frequency range from 65 to 71 GHz. Implemented in HRL’s 40 nm GaN T3 MMIC process and simulated in AWR, the presented power amplifier achieves a simulated peak power added efficiency (PAE) of 34.9% at 66 GHz. The PA is composed of three stages, and the output stage uses a 4:1 Wilkinson power combiner. The PA’s maximum linear power gain is 13.3 dB at 68 GHz for an input power of 13 dBm. The maximum output power at 1dB compression point is 35.1 dBm at 68 GHz, associated with an input power of 23 dBm. The chip size is 2.7×4.9mm2, thus demonstrating a high power density of 245 mW/mm2 in simulation.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"529 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127064576","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
Reflectarrays with Ultra-Reconfigurable VO2 Unit-Cells for Next-Generation Communication Systems 用于下一代通信系统的具有超可重构VO2单元的反射射线
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493224
Randy Matos, Abdul-Sattar Kaddour, S. Georgakopoulos, N. Pala
{"title":"Reflectarrays with Ultra-Reconfigurable VO2 Unit-Cells for Next-Generation Communication Systems","authors":"Randy Matos, Abdul-Sattar Kaddour, S. Georgakopoulos, N. Pala","doi":"10.1109/WMCS52222.2021.9493224","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493224","url":null,"abstract":"This paper presents a novel VO2-based reconfigurable reflectarray that is validated using array theory models. Use of VO2, a phase change material, as the reflecting material allows for ultra-reconfigurability by modifying the shape and size of the conducting patches. The designed square patch unit-cell demonstrated a reflection phase shift in the order of 310°. To calculate the radiation pattern and the directivity of a deployable 20 by 20 element reflectarray, a procedure based on array theory is used. A directivity between 28-30 dBi is obtained with good beam-scanning performance within ±50° elevation angle at 32GHz. The proposed VO2-based reflectarray unit-cell can adjust the geometrical pattern of the patch, which enables the reflectarray to dynamically change its frequency of operation and steer its beam; therefore, our proposed design is electronically reconfigurable. The main advantage of this antenna is the versatility of reconfigurable states it can achieve in real-time.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132039016","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
Four-port Spatiotemporally Modulated Circulator with Low Modulation Frequency 低调制频率的四端口时空调制环行器
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493276
S. Keshavarz, Haysam M. Kadry, D. Sounas
{"title":"Four-port Spatiotemporally Modulated Circulator with Low Modulation Frequency","authors":"S. Keshavarz, Haysam M. Kadry, D. Sounas","doi":"10.1109/WMCS52222.2021.9493276","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493276","url":null,"abstract":"Spatiotemporal modulation has gained significant attention recently for allowing the design of magnetless nonreciprocal components. However, most of the approaches presented to date require relatively large modulation frequencies, which creates significant challenges in their implementation at high frequencies. In this paper, we present a four-port magnetless circulator which overcomes this problem and works with a modulation frequency almost 100 times smaller than the operation frequency. The circuit is based on four Wheatstone bridges of varactors, connected to each other through inductors and modulated with a 90 deg phase difference, which, in addition to allowing operation with a low modulation frequency, is generally easier to realize than other phase differences. The design procedure of the proposed circuit is presented, together with simulation and measurement results, with a good agreement between them. For an operation frequency around 1 GHz and a modulation frequency of only 15 MHz, the proposed circulator can be designed to have high isolation (IX) (>30 dB) and relatively low insertion loss (IL) (<3 dB). The proposed approach can have important applications in high-frequency systems, where fast modulation is generally challenging.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"336 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132169035","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
Underground Tunnel Detection using EM Waves 利用电磁波探测地下隧道
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493226
J. W. Neese, D. Jackson, Y. Zheng, L. Thomsen
{"title":"Underground Tunnel Detection using EM Waves","authors":"J. W. Neese, D. Jackson, Y. Zheng, L. Thomsen","doi":"10.1109/WMCS52222.2021.9493226","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493226","url":null,"abstract":"Underground tunnel detection is a topic that has been explored in the past using a variety of methods, including electromagnetic methods such as ground penetrating radar. Here we explore tunnel detection using electromagnetic scattering from a tunnel. In the setup examined here, a radiating source (a vertical magnetic dipole, modeling a current loop transmitter) is inside of one borehole, while a receiver (a wire loop receiver) that is inside of a second borehole is used to receive an induced voltage. Changes in the received signal due to the presence of the tunnel are used for the detection.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121541176","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
Increasing the Wireless Power Transfer (WPT) Link Efficiency by High Gain Helices 利用高增益螺旋提高无线电力传输(WPT)链路效率
2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2021-05-18 DOI: 10.1109/WMCS52222.2021.9493291
H. Mardani, N. Buchanan, V. Fusco, U. Naeem
{"title":"Increasing the Wireless Power Transfer (WPT) Link Efficiency by High Gain Helices","authors":"H. Mardani, N. Buchanan, V. Fusco, U. Naeem","doi":"10.1109/WMCS52222.2021.9493291","DOIUrl":"https://doi.org/10.1109/WMCS52222.2021.9493291","url":null,"abstract":"In this study we compare helix and patch array antenna characteristics for wireless power transfer (WPT). It will be shown that the helices offer higher link efficiency for a similar beam scanning limit compared to patch antenna elements. We provide 12-by-12 element planar array results for both cases at different element spacings. The frequency band of interest is ISM 2.4-2.5GHz and we do the comparisons in this range. It is concluded that helix elements, when used as an array, offer significant improvements for wireless power link efficiency, whilst also offering a reasonable beam scanning range.","PeriodicalId":401066,"journal":{"name":"2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121435395","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
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