IEEE Transactions on Antennas and Propagation最新文献_第8页

Bifocusing-Based Imaging of Small Penetrable Dielectric Objects From Fresnel Dataset 基于菲涅耳数据集的可穿透介质小物体双聚焦成像

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-17 DOI: 10.1109/TAP.2025.3550328

Sangwoo Kang;Minyeob Lee;Won-Kwang Park;Seong-Ho Son

引用次数: 0

A K-Band Fully-Integrated Multi-Channel Active Antenna-in-Package Module in Low-Temperature Cofired Ceramic 低温共烧陶瓷的k波段全集成多通道封装天线模块

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-17 DOI: 10.1109/TAP.2025.3550452

Zhihao Zhao;Zhi-Cheng Zhu;Ben You;Xie-Peng Chen;Zong-Rui Xu;Lin-Sheng Wu;Jun-Fa Mao

{"title":"A K-Band Fully-Integrated Multi-Channel Active Antenna-in-Package Module in Low-Temperature Cofired Ceramic","authors":"Zhihao Zhao;Zhi-Cheng Zhu;Ben You;Xie-Peng Chen;Zong-Rui Xu;Lin-Sheng Wu;Jun-Fa Mao","doi":"10.1109/TAP.2025.3550452","DOIUrl":"https://doi.org/10.1109/TAP.2025.3550452","url":null,"abstract":"A K-band active antenna-in-package (AiP) module is designed, fabricated, and measured in this communication, which integrates the antenna array and the multi-channel RF receiving front-end circuits in a 3-D stacked manner. The low-temperature cofired ceramic (LTCC) technology is applied, due to its flexibilities of low-loss high-frequency interconnection, embedded passive RF devices, and miniaturized multilayer configuration. The four <inline-formula> <tex-math>$1times 4$ </tex-math></inline-formula> cross-dipole antenna subarrays are connected with the four RF receiving channels individually through vertical interconnects, with the parasitic effect compensated. The GaAs RF chips and decoupling capacitors are mounted on the bottom surface of the LTCC substrate while the low-pass filters (LPFs) and power combiner are realized directly in LTCC. The fully integrated active AiP module, with a compact size of <inline-formula> <tex-math>$1.77lambda _{0} times 1.77lambda _{0}$ </tex-math></inline-formula>, is mounted on PCB by solder bumps for power supplies and control. Near-field calibration and far-field measurements are carried out for the developed AiP module. It provides a high total gain of <inline-formula> <tex-math>$52.4sim 54.7$ </tex-math></inline-formula> dB, a low noise figure (calculated) of 1.6 dB, and an axial ratio below 2.2 dB within <inline-formula> <tex-math>$18sim 20$ </tex-math></inline-formula> GHz. The beamforming performance is also demonstrated by tuning the phase shifters (PSs) and attenuators (ATTs) with calibration to achieve a scanning range of ±50°. Good agreement is observed between the measured and simulated results, validating the link budget model for the active AiP.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 7","pages":"4957-4962"},"PeriodicalIF":4.6,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 True-Time-Delay Dual-Polarized Reflectarray Antenna for Satellite Applications 卫星用宽带真延时双偏振反射天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-17 DOI: 10.1109/TAP.2025.3550364

Reza Shamsaee Malfajani;Karim Glatre;Jean-Jacques Laurin

{"title":"Wideband True-Time-Delay Dual-Polarized Reflectarray Antenna for Satellite Applications","authors":"Reza Shamsaee Malfajani;Karim Glatre;Jean-Jacques Laurin","doi":"10.1109/TAP.2025.3550364","DOIUrl":"https://doi.org/10.1109/TAP.2025.3550364","url":null,"abstract":"A wideband dual-polarized offset reflectarray antenna (RA) using a novel wideband true-time-delay (TTD) unit cell is presented. This element is designed to accommodate large-size wideband dual-polarized RAs for satellite communications in the range of 10.7–14.5 GHz. The element, consisting of stacked microstrip circular patches coupled with an hourglass-shaped aperture and an embedded fork-shaped feed network, is designed to enhance both the bandwidth and phase range. A new arrangement for the elements is presented, which minimizes coupling between different elements and improves cross-polarization and element loss. For two polarizations, the linear phase range bandwidth exceeds 32% at the center frequency of 12.6 GHz (10.6–14.6 GHz). Exhibiting a linear phase range of over 800° at the center frequency (12.6 GHz) and maintaining an error of less than 45° across various frequencies compared to the TTD model, this element showcases exceptional dual-polarized wideband reflectarray performance. Measurement results show a maximum gain of 31.2 dBi at 12.6 GHz and 31 dBi at 13.5 GHz for vertical and horizontal polarizations (H-Pol), respectively. A 1-dB gain bandwidth of approximately 21% and a 3-dB gain bandwidth of around 31% are achieved for the vertical and H-Pols in an offset feed configuration. Sidelobe levels (SLLs) are maintained below −13 dB, while cross-polarization in vertical polarization (V-Pol) is kept under −30 dB across the entire band. For H-Pol, cross-polarization is maintained below −29 dB across the band, while SLLs remain better than −16 dB. Aperture efficiency measurements indicate values up to 57% and not less than 28% over the band.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 7","pages":"4336-4348"},"PeriodicalIF":4.6,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Wearable Metamaterial Textile for Enhanced Spatial Coverage of Deeply Implanted Device Communication System 增强植入式设备通信系统空间覆盖的可穿戴超材料纺织品

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-17 DOI: 10.1109/TAP.2025.3550329

Van Linh Pham;Son Xuat Ta;Hyoungsuk Yoo

{"title":"Wearable Metamaterial Textile for Enhanced Spatial Coverage of Deeply Implanted Device Communication System","authors":"Van Linh Pham;Son Xuat Ta;Hyoungsuk Yoo","doi":"10.1109/TAP.2025.3550329","DOIUrl":"https://doi.org/10.1109/TAP.2025.3550329","url":null,"abstract":"Wireless communication is essential for deeply implanted devices, enabling remote and instantaneous health monitoring and alert applications. However, their performance is unstable when considered within a human body model, as signal transmission efficiency is limited to a specific direction rather than all directions. In this study, by introducing a metamaterial textile (MMT) structure that incorporates antennas integrated into wearable fabrics, quasi-omnidirectional radiation from a deeply implanted device was achieved. The structure consists of a focusing antenna, a spoof surface plasmon (SSP) structure, and four radiating elements. The focus antenna receives electromagnetic (EM) energy emitted by the deeply implanted device to excite the basic radiation mode of the patches via the SPP waveguide. Therefore, EM energy radiates in all directions, avoiding unnecessary harm to the human body. The entire system, including the deeply implanted antennas and metamaterial structure incorporating the antennas, operates in the 2.45-GHz industrial, scientific, and medical (ISM) band. Experimental results based on a human upper body model demonstrate that the stable signal spatial coverage is enhanced by up to 3.1 times compared to when the structure is not used.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 7","pages":"4804-4813"},"PeriodicalIF":4.6,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 Compact Frog-Shaped Self-Diplexed MIMO Antenna With SD-HMSIW Technique for WLAN Applications 基于SD-HMSIW技术的小型蛙形自双工MIMO天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-13 DOI: 10.1109/TAP.2025.3548684

Amit Kr. Pandey;Ravi Kumar Gangwar;Raghvendra Kumar Chaudhary

{"title":"A Compact Frog-Shaped Self-Diplexed MIMO Antenna With SD-HMSIW Technique for WLAN Applications","authors":"Amit Kr. Pandey;Ravi Kumar Gangwar;Raghvendra Kumar Chaudhary","doi":"10.1109/TAP.2025.3548684","DOIUrl":"https://doi.org/10.1109/TAP.2025.3548684","url":null,"abstract":"This communication presents a compact, low-profile, dual-band shielded half-mode substrate integrated waveguide (SD-HMSIW)-based self-diplexed multiple-input multiple-output (MIMO) antenna (SDMA) designed for wireless local area network (WLAN) applications. The MIMO configuration comprises two orthogonally positioned, identical self-diplexing antenna (SDA) elements, forming a slot configuration resembling the anatomy of a frog. Each SDA element features two uniquely shaped modified slots on the top conducting surface of the SD-HMSIW cavity. These SDAs are driven by separate 50-<inline-formula> <tex-math>$Omega $ </tex-math></inline-formula> microstrip feed lines, facilitating radiation at 5.2 and 5.8 GHz with good isolation between the ports. The proposed SDA design method offers exceptional versatility, enabling independent operation at two distinct frequency bands. The overall MIMO configuration of the SDA element enables a compact antenna size of <inline-formula> <tex-math>$0.40~lambda {_{text {g}}}^{2}$ </tex-math></inline-formula>, with isolation greater than 21 dB between ports and gains of 5.26 and 4.94 dBi at ports resonating at two identical frequencies. The outcomes of MIMO antenna features involving envelope correlation coefficient (ECC), effective diversity gain (EDG), and multiplexing efficiency (MUX) have been evaluated and found to be satisfactory for the proposed SD-HMSIW-based SDMA.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"4146-4151"},"PeriodicalIF":4.6,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Millimeter-Wave Broadband Dual-Polarized Shorted Patch-Loaded Magnetoelectric-Dipole Antenna and Its Array 毫米波宽带双极化短片加载磁电偶极子天线及其阵列

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-13 DOI: 10.1109/TAP.2025.3548701

Gan Wang;Yan Zhang

{"title":"Millimeter-Wave Broadband Dual-Polarized Shorted Patch-Loaded Magnetoelectric-Dipole Antenna and Its Array","authors":"Gan Wang;Yan Zhang","doi":"10.1109/TAP.2025.3548701","DOIUrl":"https://doi.org/10.1109/TAP.2025.3548701","url":null,"abstract":"A broadband dual-polarized antenna is proposed for millimeter-wave (mmW) application, which is composed of two pairs of magnetoelectric (ME) dipoles and a shorted patch. The ME dipoles are arranged into a square ring shape to enclose the shorted patch to generate multiple resonances, and they are fed through a cross-shaped slot by two orthogonally placed feeding strip lines for dual-polarization. The proposed antenna is fabricated and measured, which achieves an impedance bandwidth of 65.4% (21.3–42 GHz) for dual-polarization, with an in-band gain variation of less than 1 dB. A <inline-formula> <tex-math>$1times 8$ </tex-math></inline-formula> array is further designed and implemented using two substrate-integrated coaxial line (SICL) feeding networks to excite eight uniformly distributed elements. The measured results show that an impedance bandwidth of 58.75% (22.1–40.48 GHz) is achieved for dual-polarization, accompanying a peak gain of 15 dBi and gain fluctuation smaller than 3 dB. To break through the beam scanning limitation over the achieved octave bandwidth, an offset feeding scheme is introduced to the proposed antenna, and a small-scale <inline-formula> <tex-math>$1times 4$ </tex-math></inline-formula> nonuniformly arranged array is proposed and numerically analyzed. The measured results indicate that a beam scanning range of ±30° can be achieved over the entire operating bandwidth, and the sidelobe levels (SLLs) remain below −10.46, −11.5, and −10.16 dB at 22, 30, and 38 GHz, respectively. The proposed antenna and its array have features of broad bandwidth, flat gain, stable radiation pattern, and wide-angle scanning, which are promising for mmW communication systems.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 7","pages":"4361-4372"},"PeriodicalIF":4.6,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 Planar Substrate-Integrated Phased Array With an Over-One-Octave Bandwidth 一种带宽超过一倍频程的平面基板集成相控阵

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-11 DOI: 10.1109/TAP.2025.3548530

Liying Sun;Yunlong Lu;Kai Wang;Jun Xu;Yang You;Shi-Wei Qu

{"title":"A Planar Substrate-Integrated Phased Array With an Over-One-Octave Bandwidth","authors":"Liying Sun;Yunlong Lu;Kai Wang;Jun Xu;Yang You;Shi-Wei Qu","doi":"10.1109/TAP.2025.3548530","DOIUrl":"https://doi.org/10.1109/TAP.2025.3548530","url":null,"abstract":"A new wideband planar substrate-integrated phased array is presented in this article. The array element is based on an open slot excited by a coaxial probe. A T-shaped stripline with shorting pins is employed in each element to achieve a smooth mode conversion from quasi-coaxial to quasi-parallel plate waveguide (PPW) in a compact manner. In this case, the element supports a full quasi-TEM mode for transmission and radiation. In addition, the air-filled holes and metal pins are incorporated into the radiating and feeding structures to shift the undesirable resonance to a higher frequency. By combining these techniques, the impedance bandwidth can be extended to more than one octave. The radiation null caused by unexpected guided-wave mode during beam scanning along the H-plane is further analyzed in detail and removed from the desired frequency range by adjusting the corresponding element period and manipulating the guided-wave characteristics. A <inline-formula> <tex-math>$10times 12$ </tex-math></inline-formula> element phased-array prototype covering 8–18 GHz (76.9%) is fabricated and tested. Experimental results demonstrate that the proposed phased array achieves a beam scanning of ±60° in the E-, H-, and D-planes, with no radiation null occurring across the operating band.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 7","pages":"4476-4487"},"PeriodicalIF":4.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144598015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Characterizing Ultrawideband Scattering From Penetrable Objects Using a Stabilized and Well-Conditioned TDIE With Laguerre Polynomials 用拉盖尔多项式表征可穿透物体的超宽带散射

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-11 DOI: 10.1109/TAP.2025.3547868

Rongchuan Bai;Ming-Da Zhu;Haoxuan Zhang;Zhengwei Du;Zhe Chen;Li Huang;Hao Xie;Jianxing Leng;Wen-Yan Yin

{"title":"Characterizing Ultrawideband Scattering From Penetrable Objects Using a Stabilized and Well-Conditioned TDIE With Laguerre Polynomials","authors":"Rongchuan Bai;Ming-Da Zhu;Haoxuan Zhang;Zhengwei Du;Zhe Chen;Li Huang;Hao Xie;Jianxing Leng;Wen-Yan Yin","doi":"10.1109/TAP.2025.3547868","DOIUrl":"https://doi.org/10.1109/TAP.2025.3547868","url":null,"abstract":"A novel approach is proposed to solve ultrawideband scattering problem of dielectric objects, which employs the time-domain integral equation (TDIE) method. The frequency band spans from ultralow frequency (<inline-formula> <tex-math>$10^{-25}$ </tex-math></inline-formula> Hz) to microwave frequency. The application of the Calderón preconditioner ensures that the impedance matrix is well-conditioned. Furthermore, the Filon-type method is integrated into the Calderón preconditioner to guarantee the accuracy of the oscillatory integral. In addition, by incorporating a block-matrix constraint condition, we obtain stabilized and well-conditioned dielectric formulations based on marching-on-in-degree (MOD) method. Expanding on these techniques, we propose a universal static error current subtraction (SECS) method, characterized by its simplicity of implementation, to attain an accurate solution for ultrawideband scenarios. Notably, the accurate results can be obtained from ultralow to high frequencies through single temporal simulation. Numerical examples demonstrate that the proposed approach is able to achieve stable and accurate ultra broadband solutions.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 6","pages":"4116-4121"},"PeriodicalIF":4.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144219614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Design, Theoretical Modeling, and Experimental Evaluation of Low-Frequency Self-Biased Magnetoelectric Mechanical Antennas 低频自偏置磁电机械天线的设计、理论建模与实验评估

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-11 DOI: 10.1109/TAP.2025.3547634

Xuan Deng;Yikai Chen;Shiwen Yang;Jun Hu

{"title":"Design, Theoretical Modeling, and Experimental Evaluation of Low-Frequency Self-Biased Magnetoelectric Mechanical Antennas","authors":"Xuan Deng;Yikai Chen;Shiwen Yang;Jun Hu","doi":"10.1109/TAP.2025.3547634","DOIUrl":"https://doi.org/10.1109/TAP.2025.3547634","url":null,"abstract":"This work presents the design, theoretical modeling, and experimental evaluation of low-frequency self-biased magnetoelectric mechanical (MEM) antennas. The thin magnet layer provides a self-biased magnetic field for achieving MEM antennas with a compact size and large radiation intensity. Bias magnetic field, nonlinear magnetostrictive (MS) effect, and the coupled longitudinal and bending modes are included in the theoretical model to accurately analyze self-biased MEM antennas. A novel self-biased MEM antenna with the bending cantilever mode is designed and optimized with the proposed theoretical model. A prototype of the proposed self-biased MEM antenna is fabricated. The self-biased MEM antenna exhibits an extremely compact size of <inline-formula> <tex-math>$8.2times 2times 0.39$ </tex-math></inline-formula> cm3. Measured results illustrate that the proposed self-biased MEM antenna operates in the ultralow-frequency (ULF) band of 356 Hz and is capable of producing 110-nT magnetic flux density for a transmission distance of 1 m. The measured and numerical results agree well with each other, which validates the accuracy and effectiveness of the proposed theoretical model. This study provides a theoretical framework for the modeling and development of self-biased MEM antennas and is attractive for applications requiring low-frequency long-distance communication.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 7","pages":"4320-4335"},"PeriodicalIF":4.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Broadband Dual-Beam Elliptical Waveguide Leaky Wave Antenna Based on Four-Transverse-Slot Unit 基于四横槽单元的宽带双波束椭圆波导漏波天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-11 DOI: 10.1109/TAP.2025.3547973

Longlong Lin;Xu Shi;Zongming Xu;Jian-Xin Chen

{"title":"Broadband Dual-Beam Elliptical Waveguide Leaky Wave Antenna Based on Four-Transverse-Slot Unit","authors":"Longlong Lin;Xu Shi;Zongming Xu;Jian-Xin Chen","doi":"10.1109/TAP.2025.3547973","DOIUrl":"https://doi.org/10.1109/TAP.2025.3547973","url":null,"abstract":"In this article, a novel broadband dual-beam elliptical waveguide (EWG) leaky wave antenna (LWA) with beam scanning is proposed and fabricated. The antenna works on two spatial harmonic waves (<inline-formula> <tex-math>${u}~in $ </tex-math></inline-formula> [0, −1]) simultaneously to generate two radiation beams, respectively. Through the detailed theoretical analysis of radiation E -field and reflection coefficient of the multislot unit on the EWG, the radiation frequency range of harmonics and the frequency of open stopband (OSB) can be derived and accurately calculated. By adopting the proposed four-transverse-slot unit with reasonable spacing, both two groups of designated higher order harmonics and OSBs of the slots can be suppressed effectively to achieve wide operation bandwidth for both transmission and dual-beam radiation, and the beam scanning range can be greatly expanded. Based on the analysis of multislot radiation above, the dual-beam gains of the proposed EWG LWA can be improved significantly. To achieve large single-mode bandwidth for ensuring the wideband operation of the LWA, it is fed by the broadband coaxial-to-EWG transition, which can suppress two high-order transmission modes (TE<inline-formula> <tex-math>$_{mathbf {s11}}$ </tex-math></inline-formula> and TE<inline-formula> <tex-math>$_{mathbf {c21}}$ </tex-math></inline-formula>) of the EWG. For verification, an EWG LWA with seven four-transverse-slot units centered at 6.1 GHz is designed and measured. The measured impedance bandwidth with <inline-formula> <tex-math>$vert $ </tex-math></inline-formula>S<inline-formula> <tex-math>$_{mathbf {11}} vert lt -10$ </tex-math></inline-formula> dB is over 61%. Good agreement between the simulated and measured results can be observed.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 7","pages":"4456-4465"},"PeriodicalIF":4.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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