Pub Date : 2023-10-04DOI: 10.1109/JMW.2023.3312896
{"title":"IEEE Journal of Microwaves Information for Authors","authors":"","doi":"10.1109/JMW.2023.3312896","DOIUrl":"https://doi.org/10.1109/JMW.2023.3312896","url":null,"abstract":"","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"3 4","pages":"C3-C3"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9171629/10271404/10271516.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49952316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-04DOI: 10.1109/JMW.2023.3313560
Peter H. Siegel
Our fall issue of IEEE Journal of Microwaves opens with great news: we are now being indexed on Clarivate's Web of Science! We will also have our papers appearing on Elsevier's Scopus database as early as November. In July, we were joined by a new assistant editor, Jackie Steele who, in addition to the normal editorial functions, is helping to promote our authors and our journal. Jackie has already set up a JMW forum on LinkedIn™ and started a monthly newsletter. In this issue you will find 16 new research papers covering topics as diverse as optimal power beaming transmitter arrays to a new ultra-wideband cryogenic isolator, plus the more usual components, filters, radar, and communications articles. We also share the third iteration of our continuing series of articles from Topic Editor Allison Marsh, on Women in Microwaves . Our subject is University of Minnesota Professor Rhonda Franklin. Our usage numbers now top 420,000 and our latest IEEEXplore citation count sits at 8.79 per article published. Also in this issue – our full list of 2023 reviewers. Based on feedback from our July special series article Making Waves: Microwaves in Climate Change, we have started planning for a full special issue on this topic to be released in late 2024. A Call for Papers can be found at the end of this issue's table of contents.
我们秋季出版的IEEE微波杂志带来了好消息:我们现在被Clarivate的Web of Science收录了!我们的论文也将最早于11月出现在爱思唯尔的Scopus数据库中。7月，我们加入了一位新的助理编辑Jackie Steele，除了正常的编辑职能外，他还帮助推广我们的作者和我们的期刊。Jackie已经在LinkedIn™上建立了一个JMW论坛，并开始每月发布一份时事通讯。在本期中，您将发现16篇新的研究论文，涵盖的主题从最佳功率束射发射机阵列到新型超宽带低温隔离器，以及更常见的组件，滤波器，雷达和通信文章。我们还分享了话题编辑Allison Marsh关于“微波中的女性”系列文章的第三篇。我们的主题是明尼苏达大学的朗达·富兰克林教授。我们的用户数量现在达到了42万，我们最新的IEEEXplore引用数达到了每篇文章8.79次。同样在这一期中-我们的2023名审稿人的完整名单。根据我们7月份特别系列文章《制造浪潮:气候变化中的微波》的反馈，我们已经开始计划在2024年底发布关于这一主题的完整特刊。在本期目录的末尾可以找到论文征集。
{"title":"Introduction to the Fall 2023 Issue","authors":"Peter H. Siegel","doi":"10.1109/JMW.2023.3313560","DOIUrl":"https://doi.org/10.1109/JMW.2023.3313560","url":null,"abstract":"Our fall issue of \u0000<sc>IEEE Journal of Microwaves</small>\u0000 opens with great news: we are now being indexed on Clarivate's Web of Science! We will also have our papers appearing on Elsevier's Scopus database as early as November. In July, we were joined by a new assistant editor, Jackie Steele who, in addition to the normal editorial functions, is helping to promote our authors and our journal. Jackie has already set up a JMW forum on LinkedIn™ and started a monthly newsletter. In this issue you will find 16 new research papers covering topics as diverse as optimal power beaming transmitter arrays to a new ultra-wideband cryogenic isolator, plus the more usual components, filters, radar, and communications articles. We also share the third iteration of our continuing series of articles from Topic Editor Allison Marsh, on \u0000<italic>Women in Microwaves</i>\u0000. Our subject is University of Minnesota Professor Rhonda Franklin. Our usage numbers now top 420,000 and our latest IEEEXplore citation count sits at 8.79 per article published. Also in this issue – our full list of 2023 reviewers. Based on feedback from our July special series article \u0000<italic>Making Waves: Microwaves in Climate Change,</i>\u0000 we have started planning for a full special issue on this topic to be released in late 2024. A Call for Papers can be found at the end of this issue's table of contents.","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"3 4","pages":"1071-1080"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9171629/10271404/10271515.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49952395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-04DOI: 10.1109/JMW.2023.3312341
Jonas Mendoza;Gokhan Mumcu
A microfluidically reconfigurable beamforming network is introduced for beam steering mm-wave antenna arrays. The beamforming network consists of a selectively metallized plate (SMP) that is encapsulated within a microfluidic channel in close proximity to multiple microstrip lines. Metallization traces of the SMP capacitively loads the microstrip lines to realize multiple slow-wave phase shifters. Varying the position of SMP over the lines creates variable phase shifts of the device. Strategically designing the SMP traces on each microstrip line leads to progressive phase shifting, resulting in operation with a single actuator. The manuscript presents a circuit model to facilitate the design of the beamforming network and presents experimental verification with a four-element antenna array operating at 28.5 GHz. The array exhibits continuous beam steering capability within $pm {30}^{circ }$ when its SMP is actuated within its 100 to +100 $mu$ m displacement range. The beam steering speed from $-{30}^{circ }$ to $+{30}^{circ }$ is 75 ms. The realized gain is 5.6 dBi at broadside and 6.8 dBi at ${30}^{circ }$ scan angle corresponding to a radiation efficiency of 64% (including all losses in the system). The device is expected to handle 10 W of continuous RF power
{"title":"Mm-Wave Beam Steering Antenna Arrays Using Microfluidically Reconfigurable Beamforming Networks","authors":"Jonas Mendoza;Gokhan Mumcu","doi":"10.1109/JMW.2023.3312341","DOIUrl":"https://doi.org/10.1109/JMW.2023.3312341","url":null,"abstract":"A microfluidically reconfigurable beamforming network is introduced for beam steering mm-wave antenna arrays. The beamforming network consists of a selectively metallized plate (SMP) that is encapsulated within a microfluidic channel in close proximity to multiple microstrip lines. Metallization traces of the SMP capacitively loads the microstrip lines to realize multiple slow-wave phase shifters. Varying the position of SMP over the lines creates variable phase shifts of the device. Strategically designing the SMP traces on each microstrip line leads to progressive phase shifting, resulting in operation with a single actuator. The manuscript presents a circuit model to facilitate the design of the beamforming network and presents experimental verification with a four-element antenna array operating at 28.5 GHz. The array exhibits continuous beam steering capability within \u0000<inline-formula><tex-math>$pm {30}^{circ }$</tex-math></inline-formula>\u0000 when its SMP is actuated within its 100 to +100 \u0000<inline-formula><tex-math>$mu$</tex-math></inline-formula>\u0000m displacement range. The beam steering speed from \u0000<inline-formula><tex-math>$-{30}^{circ }$</tex-math></inline-formula>\u0000 to \u0000<inline-formula><tex-math>$+{30}^{circ }$</tex-math></inline-formula>\u0000 is 75 ms. The realized gain is 5.6 dBi at broadside and 6.8 dBi at \u0000<inline-formula><tex-math>${30}^{circ }$</tex-math></inline-formula>\u0000 scan angle corresponding to a radiation efficiency of 64% (including all losses in the system). The device is expected to handle 10 W of continuous RF power","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"3 4","pages":"1177-1186"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9171629/10271404/10271512.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49952384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-25DOI: 10.1109/JMW.2023.3313115
Adamantia Chletsou;Eric Newsom;John Papapolymerou
A helical antenna for Cellular-Vehicle To Everything (C-V2X) communications is manufactured and integrated around the car high mount stop light (CHMSL) area of a Ford SUV vehicle. The antenna performance is measured on a foam pillar, on a ground plane and on the vehicle, inside a near field measurement system. The antenna consists of three helical arms wrapped around a 3D-printed hemisphere with a radius of 4.8 mm. The helical arms are built using commercial wire with a radius of 0.127 mm. It operates in a monopole configuration, has an omni-directional radiation pattern and vertical polarization. The maximum measured realized gain of the antenna when integrated on the vehicle is 2.5 dBi at 5.9 GHz.
{"title":"Experimental Characterization of a Helical Antenna Integrated in the Rear of a Vehicle for C-V2X Communications","authors":"Adamantia Chletsou;Eric Newsom;John Papapolymerou","doi":"10.1109/JMW.2023.3313115","DOIUrl":"https://doi.org/10.1109/JMW.2023.3313115","url":null,"abstract":"A helical antenna for Cellular-Vehicle To Everything (C-V2X) communications is manufactured and integrated around the car high mount stop light (CHMSL) area of a Ford SUV vehicle. The antenna performance is measured on a foam pillar, on a ground plane and on the vehicle, inside a near field measurement system. The antenna consists of three helical arms wrapped around a 3D-printed hemisphere with a radius of 4.8 mm. The helical arms are built using commercial wire with a radius of 0.127 mm. It operates in a monopole configuration, has an omni-directional radiation pattern and vertical polarization. The maximum measured realized gain of the antenna when integrated on the vehicle is 2.5 dBi at 5.9 GHz.","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"3 4","pages":"1147-1153"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9171629/10271404/10261944.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49952382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-22DOI: 10.1109/JMW.2023.3313111
Nicholas C. Miller;Andrea Arias-Purdue;Erdem Arkun;David Brown;James F. Buckwalter;Robert L. Coffie;Andrea Corrion;Daniel J. Denninghoff;Michael Elliott;Dave Fanning;Ryan Gilbert;Daniel S. Green;Florian Herrault;Ben Heying;Casey M. King;Eythan Lam;Jeong-Sun Moon;Petra V. Rowell;Georges Siddiqi;Ioulia Smorchkova;Joe Tai;Jansen Uyeda;Mike Wojtowicz
This article presents a set of measured benchmarks for the noise and gain performance of six different millimeter-wave (mm-wave) gallium nitride (GaN) high electron mobility transistor (HEMT) technologies fabricated at four different foundries in the United States. Measurements of the GaN transistors were collected on two independent noise parameter (NP) systems from 8–50 GHz and 75–110 GHz. The resulting raw NPs were stitched together to yield ultra broadband 8–110 GHz smoothed NPs. Several comparisons and summaries of the minimum noise figure and associated gain are reported for the six different GaN technologies. This work seeks to provide an initial database for noise and gain of GaN HEMTs at mm-wave frequencies to quantify progress on technology in the future.
{"title":"A Survey of GaN HEMT Technologies for Millimeter-Wave Low Noise Applications","authors":"Nicholas C. Miller;Andrea Arias-Purdue;Erdem Arkun;David Brown;James F. Buckwalter;Robert L. Coffie;Andrea Corrion;Daniel J. Denninghoff;Michael Elliott;Dave Fanning;Ryan Gilbert;Daniel S. Green;Florian Herrault;Ben Heying;Casey M. King;Eythan Lam;Jeong-Sun Moon;Petra V. Rowell;Georges Siddiqi;Ioulia Smorchkova;Joe Tai;Jansen Uyeda;Mike Wojtowicz","doi":"10.1109/JMW.2023.3313111","DOIUrl":"https://doi.org/10.1109/JMW.2023.3313111","url":null,"abstract":"This article presents a set of measured benchmarks for the noise and gain performance of six different millimeter-wave (mm-wave) gallium nitride (GaN) high electron mobility transistor (HEMT) technologies fabricated at four different foundries in the United States. Measurements of the GaN transistors were collected on two independent noise parameter (NP) systems from 8–50 GHz and 75–110 GHz. The resulting raw NPs were stitched together to yield ultra broadband 8–110 GHz smoothed NPs. Several comparisons and summaries of the minimum noise figure and associated gain are reported for the six different GaN technologies. This work seeks to provide an initial database for noise and gain of GaN HEMTs at mm-wave frequencies to quantify progress on technology in the future.","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"3 4","pages":"1134-1146"},"PeriodicalIF":0.0,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9171629/10271404/10260709.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49952397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article investigates the dispersion properties of metasurfaces with hexagonal lattices, including potential higher symmetric configurations. We explore the relationships between the periodicity of hexagonal lattices and their dispersion properties, paying special attention to how hexagonal periodic structures can be analyzed with either a hexagonal primitive unit cell or a rectangular supercell. We also study the possibility of introducing higher symmetries into hexagonal periodic structures, including glide symmetry and mirrored half-turn symmetry. To complement and validate the analysis, we designed a graded-index Luneburg lens antenna with a dielectric-filled hexagonal holey structure working in the K $_{mathrm{a}}$ -band. The antenna generates steerable highly directive beams from 26 GHz to 30 GHz, which corroborates our analysis. Our findings provide valuable insight into the dispersion properties of hexagonal-lattice metasurfaces and demonstrate the feasibility of using such structures in practical applications.
{"title":"Dispersion Analysis of Metasurfaces With Hexagonal Lattices With Higher Symmetries","authors":"Shiyi Yang;Oskar Zetterstrom;Francisco Mesa;Oscar Quevedo-Teruel","doi":"10.1109/JMW.2023.3312165","DOIUrl":"https://doi.org/10.1109/JMW.2023.3312165","url":null,"abstract":"This article investigates the dispersion properties of metasurfaces with hexagonal lattices, including potential higher symmetric configurations. We explore the relationships between the periodicity of hexagonal lattices and their dispersion properties, paying special attention to how hexagonal periodic structures can be analyzed with either a hexagonal primitive unit cell or a rectangular supercell. We also study the possibility of introducing higher symmetries into hexagonal periodic structures, including glide symmetry and mirrored half-turn symmetry. To complement and validate the analysis, we designed a graded-index Luneburg lens antenna with a dielectric-filled hexagonal holey structure working in the K\u0000<inline-formula><tex-math>$_{mathrm{a}}$</tex-math></inline-formula>\u0000-band. The antenna generates steerable highly directive beams from 26 GHz to 30 GHz, which corroborates our analysis. Our findings provide valuable insight into the dispersion properties of hexagonal-lattice metasurfaces and demonstrate the feasibility of using such structures in practical applications.","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"3 4","pages":"1154-1165"},"PeriodicalIF":0.0,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9171629/10271404/10256254.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49952383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-18DOI: 10.1109/JMW.2023.3311356
Wenhao Li;Yun Liu;Shanhui Pei
In this study, a novel dual-band bandpass coaxial cavity filter with large design freedoms for center frequencies and bandwidths is proposed by introducing F-shaped dual-mode resonators. Each F-shaped dual-mode resonator is capacitively loaded with two tuning screws for simultaneously tuning two frequencies. A dual-iris structure is implemented for the couplings between the two dual-mode resonators, with two screws applied to enhance the couplings. A dual-disc capacitive coupling is implemented at the input and output ports. By introducing these structures, the frequencies and bandwidths of the two passbands can have large design freedoms. A third-order dual-band filter at 0.845 GHz/1.790 GHz with bandwidths of 12 MHz/26 MHz is also designed, fabricated, and measured. Low insertion losses of 0.4 dB and 0.35 dB are achieved at the passbands. In comparison with planar dual-band bandpass filters, the filter presented in this study offers lower insertion losses and more convenience in filter tuning.
{"title":"Dual-Band Bandpass Coaxial Cavity Filters With Controllable Center Frequencies and Bandwidths Using F-Shaped Resonators","authors":"Wenhao Li;Yun Liu;Shanhui Pei","doi":"10.1109/JMW.2023.3311356","DOIUrl":"https://doi.org/10.1109/JMW.2023.3311356","url":null,"abstract":"In this study, a novel dual-band bandpass coaxial cavity filter with large design freedoms for center frequencies and bandwidths is proposed by introducing F-shaped dual-mode resonators. Each F-shaped dual-mode resonator is capacitively loaded with two tuning screws for simultaneously tuning two frequencies. A dual-iris structure is implemented for the couplings between the two dual-mode resonators, with two screws applied to enhance the couplings. A dual-disc capacitive coupling is implemented at the input and output ports. By introducing these structures, the frequencies and bandwidths of the two passbands can have large design freedoms. A third-order dual-band filter at 0.845 GHz/1.790 GHz with bandwidths of 12 MHz/26 MHz is also designed, fabricated, and measured. Low insertion losses of 0.4 dB and 0.35 dB are achieved at the passbands. In comparison with planar dual-band bandpass filters, the filter presented in this study offers lower insertion losses and more convenience in filter tuning.","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"3 4","pages":"1222-1229"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9171629/10271404/10254688.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49952311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-15DOI: 10.1109/JMW.2023.3309673
Yun Liu;Cristiano Tomassoni;Shuai Jiang
This article presents a novel dual-band bandpass filter based on cylinder dielectric resonators, where the dielectric mode TE 01δ is exploited to generate the first passband, and the two degenerate modes HEH 11 are used to generate the second passband. In order to achieve the needed couplings between the input/output port and the TE 01δ /HEH 11 modes, a probe with both a straight and a curved section is designed. The needed inner couplings between modes of contiguous cavities are instead obtained by using inductive irises and capacitive probes. A systematic design procedure is provided for achieving the center frequencies and bandwidths with large design freedoms. To validate the methods, a dual-band filter working at 2.249 GHz and 2.607 GHz with bandwidths of 32 MHz, is designed and fabricated. The Filter shows low insertion loss, high rejection and compact dimensions. Measured results demonstrate the feasibility of the proposed approach.
{"title":"Dual-Band Dielectric Resonator Filters Employing TE01δ Mode and Degenerate HEH11 Modes","authors":"Yun Liu;Cristiano Tomassoni;Shuai Jiang","doi":"10.1109/JMW.2023.3309673","DOIUrl":"https://doi.org/10.1109/JMW.2023.3309673","url":null,"abstract":"This article presents a novel dual-band bandpass filter based on cylinder dielectric resonators, where the dielectric mode TE\u0000<sub>01δ</sub>\u0000 is exploited to generate the first passband, and the two degenerate modes HEH\u0000<sub>11</sub>\u0000 are used to generate the second passband. In order to achieve the needed couplings between the input/output port and the TE\u0000<sub>01δ</sub>\u0000/HEH\u0000<sub>11</sub>\u0000 modes, a probe with both a straight and a curved section is designed. The needed inner couplings between modes of contiguous cavities are instead obtained by using inductive irises and capacitive probes. A systematic design procedure is provided for achieving the center frequencies and bandwidths with large design freedoms. To validate the methods, a dual-band filter working at 2.249 GHz and 2.607 GHz with bandwidths of 32 MHz, is designed and fabricated. The Filter shows low insertion loss, high rejection and compact dimensions. Measured results demonstrate the feasibility of the proposed approach.","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"3 4","pages":"1212-1221"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9171629/10271404/10252135.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49952310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-15DOI: 10.1109/JMW.2023.3310889
Shahinshah Ali;Hammad M. Cheema;Farhan A. Ghaffar
A novel leaky wave antenna (LWA) with integrated field-programmable microwave substrate (FPMS) unit cells is presented in this article. The proposed antenna consists of a Half Mode Substrate Waveguide (HMSIW), loaded with cross-shaped slots to generate the desired phase response and radiation characteristics. Using the agile FPMS technology, the substrate properties along one of the longitudinal edges of the antenna are varied, which allows the steering of the radiation direction at a single frequency. A total of 70-unit cells are integrated with the antenna at 12 GHz, resulting in a maximum beam steering of 72 $^circ $ in simulations along the elevation. Experimental results of the fabricated prototype also demonstrate the practical viability of the proposed design concept with a total beam steering of 35°. The design presented in this research serves as a proof-of-concept, setting the stage for forthcoming advancements and refinements in the field of smart antenna systems using FPMS.
{"title":"Beam Steerable Half Mode SIW Leaky-Wave Antenna Using FPMS","authors":"Shahinshah Ali;Hammad M. Cheema;Farhan A. Ghaffar","doi":"10.1109/JMW.2023.3310889","DOIUrl":"https://doi.org/10.1109/JMW.2023.3310889","url":null,"abstract":"A novel leaky wave antenna (LWA) with integrated field-programmable microwave substrate (FPMS) unit cells is presented in this article. The proposed antenna consists of a Half Mode Substrate Waveguide (HMSIW), loaded with cross-shaped slots to generate the desired phase response and radiation characteristics. Using the agile FPMS technology, the substrate properties along one of the longitudinal edges of the antenna are varied, which allows the steering of the radiation direction at a single frequency. A total of 70-unit cells are integrated with the antenna at 12 GHz, resulting in a maximum beam steering of 72\u0000<inline-formula><tex-math>$^circ $</tex-math></inline-formula>\u0000 in simulations along the elevation. Experimental results of the fabricated prototype also demonstrate the practical viability of the proposed design concept with a total beam steering of 35°. The design presented in this research serves as a proof-of-concept, setting the stage for forthcoming advancements and refinements in the field of smart antenna systems using FPMS.","PeriodicalId":93296,"journal":{"name":"IEEE journal of microwaves","volume":"3 4","pages":"1187-1198"},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/iel7/9171629/10271404/10253469.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49952309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-13DOI: 10.1109/JMW.2023.3311522
Kunchen Zhao;Dimitra Psychogiou
This manuscript reports on a new class of triple-mode post-loaded cavity-resonator based bandpass filters (BPFs) alongside their design methodology and a monolithic integration scheme using stereolithography apparatus (SLA) 3D printing. The proposed BPF concept exhibits the following unique features: i) miniaturized size accomplished by combining three modes within the volume of a single post-loaded cavity resonator, ii) bespoke coupling element configurations that facilitate the realization of transmission zeros (TZs) in the out-of-band response and iii) monolithic SLA integration that further reduces the size and weight of the entire filter as opposed to conventional split-block manufacturing schemes. For proof-of-concept validation purposes, two three-pole/two-TZ BPFs and a six-pole/four-TZ BPF operating at 2.9 GHz, 3.2 GHz and 3.2 GHz with a fractional bandwidth (FBW) of 16.3%, 15.2%, 14.2% respectively, were designed, manufactured, and tested. They exhibited passbands with in-band insertion loss < 0.37 dB, that corresponds to an effective quality factor ( Q eff s) > 780.
本文报道了一类新的基于三模后加载腔谐振器的带通滤波器（BPF）及其设计方法和使用立体光刻设备（SLA）3D打印的单片集成方案。所提出的BPF概念表现出以下独特特征：i）通过在单个后加载腔谐振器的体积内组合三种模式实现的小型化尺寸，ii）有助于在带外响应中实现传输零点（TZ）的定制耦合元件配置，以及iii）与传统的分块制造方案相比，进一步减小整个滤波器的尺寸和重量的单片SLA集成。出于概念验证的目的，设计、制造和测试了两个在2.9 GHz、3.2 GHz和3.2 GHz下工作的三极/两个TZ BPF和一个六极/四个TZ BP F，其分数带宽（FBW）分别为16.3%、15.2%和14.2%。它们表现出带内插入损耗<0.37dB的通带，这对应于>780的有效质量因子（Qeffs）。
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