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Ultra-Short Horn Antennas via Digital Choke and Groove Aperture Topologies 基于数字扼流圈和沟槽孔径拓扑的超短喇叭天线
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-16 DOI: 10.1109/LAWP.2025.3530859
Galestan Mackertich-Sengerdy;Sawyer D. Campbell;Douglas H. Werner
{"title":"Ultra-Short Horn Antennas via Digital Choke and Groove Aperture Topologies","authors":"Galestan Mackertich-Sengerdy;Sawyer D. Campbell;Douglas H. Werner","doi":"10.1109/LAWP.2025.3530859","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3530859","url":null,"abstract":"The pursuit of compact antennas has historically sacrificed directivity. Traditionally, solutions involve adding radiators, complex lenses or enlarging the antenna, which often introduces spurious lobes or increases system height. This study investigates a digital choke and groove aperture technology, employing recessed slots and protruded chokes, to optimize directivity and shape lobes in ultra-short horns. Through analysis and experiments, we assess the antenna's gain, volume efficiency, bandwidth, and lobe suppression. Our findings offer insights into applications and lay the groundwork for further advancements in ultra-low-profile digital aperture topologies for ultra-short horns.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1213-1217"},"PeriodicalIF":3.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wideband Dual-Polarized Metasurface Antenna With Polarization Reconfigurable Controlled by Diode and Resistor, Featuring Low RCS 低RCS的二极管和电阻控制的偏振可重构宽带双极化超表面天线
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-16 DOI: 10.1109/LAWP.2025.3530170
Zhendong Ding;Jiawang Li;Jianyin Cao;Hao Wang;Michael Yan-Wah Chia;Nasimuddin Nasimuddin
{"title":"Wideband Dual-Polarized Metasurface Antenna With Polarization Reconfigurable Controlled by Diode and Resistor, Featuring Low RCS","authors":"Zhendong Ding;Jiawang Li;Jianyin Cao;Hao Wang;Michael Yan-Wah Chia;Nasimuddin Nasimuddin","doi":"10.1109/LAWP.2025.3530170","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3530170","url":null,"abstract":"A polarization-reconfigurable metasurface wideband antenna with dual polarization and a low radar cross section (RCS) is presented. The antenna employs a diode positioned between two transmission lines to control the current direction and a resistor on a defected-ground branch to manage phase shifts, enabling seamless transitions between circular polarization and linear polarization. The elliptical metasurface design contributes to a reduced RCS. The design results are verified through measurement, showing an impedance bandwidth (IBW) of 49.1%, an axial ratio bandwidth (ARBW) of 23.2% for the diode is <sc>off</small>, an IBW of 36.4% for the diode is <sc>on</small>, the IBW of the connected resistor is 40.7%, and the peak gains for the three states are 6.4 dBi, 4.4 dBi, and 4.2 dBi, respectively. The metasurface achieves a low RCS bandwidth ranging from 2 GHz to 24 GHz, showing a 6 dBsm reduction in RCS from 4.9 GHz to 19.7 GHz, which corresponds to a 120.3% decrease compared to a perfect electric conductor (PEC) plate.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1208-1212"},"PeriodicalIF":3.7,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
2024 Index IEEE Antennas and Wireless Propagation Letters Vol. 23 2024索引IEEE天线和无线传播通信Vol. 23
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-15 DOI: 10.1109/LAWP.2025.3529163
{"title":"2024 Index IEEE Antennas and Wireless Propagation Letters Vol. 23","authors":"","doi":"10.1109/LAWP.2025.3529163","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3529163","url":null,"abstract":"","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"23 12","pages":"1-50"},"PeriodicalIF":3.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10843093","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142992948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scattering by Multiple Arbitrary Circular Cavities Loaded in a PEC Plane PEC平面上加载多个任意圆腔的散射
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-15 DOI: 10.1109/LAWP.2025.3529488
Mehdi Bozorgi
{"title":"Scattering by Multiple Arbitrary Circular Cavities Loaded in a PEC Plane","authors":"Mehdi Bozorgi","doi":"10.1109/LAWP.2025.3529488","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3529488","url":null,"abstract":"In this letter, an efficient solution based on the modal expansion method for the analysis of wave scattering from multiple arbitrary circular cavities placed in a perfect electric conductor is presented. Unlike most of the existing methods that employ the Graf's addition theorem, which brings serious problems, we employ the complex function method cooperating with multipolar coordinate transformation to match tangential fields in analyzed regions. Finally, unknown expansion coefficients are computed by solving the system of linear equations and the Fourier series. Some typical examples are given to verify the solution by the method of moments.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1178-1182"},"PeriodicalIF":3.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wideband High-Gain Quad-Polarization Reconfigurable Antenna Using Three-Layered Polarizer 基于三层极化器的宽带高增益四极化可重构天线
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-15 DOI: 10.1109/LAWP.2025.3529684
Zhengrong Lu;Yujian Li;Junhong Wang
{"title":"Wideband High-Gain Quad-Polarization Reconfigurable Antenna Using Three-Layered Polarizer","authors":"Zhengrong Lu;Yujian Li;Junhong Wang","doi":"10.1109/LAWP.2025.3529684","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3529684","url":null,"abstract":"Quad-polarization reconfigurable antenna consists of a three-layered polarizer, and an 8 × 8 source antenna is investigated in the Ka band. By changing the orientation of each layer, the antenna can radiate horizontally polarized, vertically polarized, left-hand and right-hand circularly polarized electromagnetic waves. The 8 × 8 horn array is employed as the source antenna, enhancing the antenna gain and expanding the operating bandwidth. The polarizer and the source antenna are fabricated by 3-D printing technology using photopolymer and aluminum alloy. Excellent operating performance, including impedance bandwidth of 51.1%, gain of up to 24.8 dBi, dual circular polarization overlap bandwidth of 41.3%, and quad-polarization overlap bandwidth of 24.6%, is obtained experimentally by the fabricated prototype. The proposed antenna with promising performance is valuable to emerging millimeter-wave applications.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1198-1202"},"PeriodicalIF":3.7,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Closed-Form Solution for Electromagnetic Wave Propagation in Spatially Unbounded, Linear Time-Varying Plasmas 电磁波在空间无界线性时变等离子体中传播的封闭解
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-14 DOI: 10.1109/LAWP.2025.3528860
Hossein Mehrpour Bernety;Mark A. Cappelli
{"title":"A Closed-Form Solution for Electromagnetic Wave Propagation in Spatially Unbounded, Linear Time-Varying Plasmas","authors":"Hossein Mehrpour Bernety;Mark A. Cappelli","doi":"10.1109/LAWP.2025.3528860","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3528860","url":null,"abstract":"We present a closed-form solution for the electromagnetic wave equation that governs propagation in a spatially unbounded, linear time-varying gaseous plasma. Using a proper change of variable, the wave equation is converted into the Lommel's transformed version of the Bessel differential equation. The analytical wave functions in time are then expressed in terms of Bessel functions of the first kind with complex orders, which appears to be a very rare case in physical problems. Unlike previous analytical treatments of the problem, such as the use of adiabatic and Laplace transform approximations, which deal with slow and fast rise times of the plasma, respectively, the solution presented here imposes no constraints on the rise time relative to the time period of the source wave.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1163-1167"},"PeriodicalIF":3.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Wideband Differential Dual Circularly Polarized Laminated Resonator Antenna 宽带差分双圆极化层压谐振器天线
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-14 DOI: 10.1109/LAWP.2025.3529493
Yaowei Hou;Junming Ding;Yueping Zhang;Junfa Mao
{"title":"A Wideband Differential Dual Circularly Polarized Laminated Resonator Antenna","authors":"Yaowei Hou;Junming Ding;Yueping Zhang;Junfa Mao","doi":"10.1109/LAWP.2025.3529493","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3529493","url":null,"abstract":"A wideband differential dual circularly polarized (CP) laminated resonator antenna (LRA) is reported in this letter for the first time. Two 90° hybrid couplers and four rotationally symmetrical L-probes are adopted as the feeding of the dual CP LRA. The four input ports of the 90° hybrid couplers form two pairs of differential ports for dual CP operations. When each pair of differential ports is supplied with differential signals, the proposed LRA works in its degenerate dominant modes, <inline-formula><tex-math>${rm TE}^{y}_{101}$</tex-math></inline-formula> and <inline-formula><tex-math>${rm TE}^{x}_{011}$</tex-math></inline-formula> modes, with a −90°/+90° phase difference, which radiates left-handed circular polarization (LHCP) or right-handed circular polarization (RHCP) waves, respectively. For demonstration, an antenna prototype is simulated, manufactured, and experimented. The differential dual CP LRA in a low profile of 0.119<italic>λ</i><sub>0</sub> shows a broad measured effective bandwidth of 28.6% confined by the −10 dB differential impedance, 3 dB axial ratio (AR), and −15 dB LHCP-to-RHCP isolation bandwidths. Besides, the radiation patterns are stable and symmetric. The in-band gain varies within 1 dB. The proposed LRA is a promising candidate for applications in differential wireless communication systems of multiple circular polarization.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1183-1187"},"PeriodicalIF":3.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
66–76 GHz High-Isolation 1-D Wide-Angle Scanning Phased Array Antenna With Bent-Wall Structures 弯曲壁结构66-76 GHz高隔离一维广角扫描相控阵天线
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-14 DOI: 10.1109/LAWP.2025.3529596
Jinghao Li;Wanchen Yang;Yuji Liu;Wenjie Feng;Quan Xue;Wenquan Che
{"title":"66–76 GHz High-Isolation 1-D Wide-Angle Scanning Phased Array Antenna With Bent-Wall Structures","authors":"Jinghao Li;Wanchen Yang;Yuji Liu;Wenjie Feng;Quan Xue;Wenquan Che","doi":"10.1109/LAWP.2025.3529596","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3529596","url":null,"abstract":"In this letter, a millimeter-wave wide-angle scanning phased array antenna based on low-temperature co-fired ceramics is proposed. First, metal grounded vias and metal plates are introduced around the patch antenna to form a bent wall, which can broaden the E-plane beamwidth from 100° to 118° at 66 GHz to 76 GHz. Based on the wide-beam element, a 4 × 4 array is constructed with a spacing of only 0.38λ<sub>0</sub>, and a Π-shaped decoupling structure is introduced between adjacent elements to construct a planar coupling cancelation path with equal magnitude and opposite phase, which can increase the isolation from 15 dB to 20 dB. In addition, two rows of dummy elements are loaded along the E-plane on both sides of the array to improve the maximum scanning angle to ±71°, with the gain attenuation within 2 dB. The antenna prototypes are fabricated and the measured and simulated results are highly consistent, indicating the proposed phased array antenna is a favorable candidate for 6G applications.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1193-1197"},"PeriodicalIF":3.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Wide-Angle Electromagnetic Scattering Analysis of Object With Large-Scale Partial Modifications 具有大规模局部修正的物体的广角电磁散射分析
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-14 DOI: 10.1109/LAWP.2025.3529506
Xiaoxing Fang;Yunyun Zhang;Jiagang Liu;Wen Tian
{"title":"Wide-Angle Electromagnetic Scattering Analysis of Object With Large-Scale Partial Modifications","authors":"Xiaoxing Fang;Yunyun Zhang;Jiagang Liu;Wen Tian","doi":"10.1109/LAWP.2025.3529506","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3529506","url":null,"abstract":"This letter introduces a combined approximation (CA) method to address electromagnetic scattering analysis of partially modified objects, especially when partial modifications to an object are large scale. This method utilizes information from the initial impedance matrix to swiftly estimate the inverse of the modified impedance matrix, thereby avoiding the need of repetitive inversion. To tackle the wide-angle problem, the fast adaptive cross approximation algorithm is applied to compress the right-hand matrix affected by wide-angle incident excitation on partially modified objects. Then, the compressed low-rank matrix is incorporated into the CA method, enabling rapid solution of modified impedance matrix equation. Numerical results are provided to demonstrate the accuracy and effectiveness of the proposed method.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1188-1192"},"PeriodicalIF":3.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient Full-Wave Analysis of Lens Antennas With Arbitrary Feeder 任意馈线透镜天线的高效全波分析
IF 3.7 2区 计算机科学
IEEE Antennas and Wireless Propagation Letters Pub Date : 2025-01-14 DOI: 10.1109/LAWP.2025.3530101
J. Rubio;R. Gómez Alcalá;P. Robustillo;J. M. Gil
{"title":"Efficient Full-Wave Analysis of Lens Antennas With Arbitrary Feeder","authors":"J. Rubio;R. Gómez Alcalá;P. Robustillo;J. M. Gil","doi":"10.1109/LAWP.2025.3530101","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3530101","url":null,"abstract":"The full-wave response of lenses with symmetry of revolution and arbitrary feeder, including mutual coupling, is efficiently obtained. For this purpose, a domain decomposition is carried out using concave or convex spherical ports, and the finite element method (FEM) for bodies of revolution is applied to the lens domain. The use of addition theorems for spherical modes allows the feeder to be arbitrarily translated and rotated. In this way, any modification in the lens or changes in the position of the feeder is quickly calculated, considering the mutual interactions between lens and feeder. The number of 2-D FEM simulations needed for lens analysis is discussed, as it will determine the efficiency of the method. Two very different examples are shown. One is based on a convex-to-concave spherical port connection, and the other on a convex-to-convex spherical port connection, for which a specific formulation is also presented.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 5","pages":"1203-1207"},"PeriodicalIF":3.7,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10841947","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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