IEEE Transactions on Antennas and Propagation最新文献_第7页

A Dual-Beam SIW Leaky Wave Antenna With Butterfly-Shaped Slot and Suppressed Stopband Based on Radiation of Two Spatial Harmonics 基于双空间谐波辐射的蝶形槽抑制阻带双波束SIW漏波天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-27 DOI: 10.1109/TAP.2025.3531140

Wei Zheng;Junhong Wang;Yunjie Geng;Zheng Li

{"title":"A Dual-Beam SIW Leaky Wave Antenna With Butterfly-Shaped Slot and Suppressed Stopband Based on Radiation of Two Spatial Harmonics","authors":"Wei Zheng;Junhong Wang;Yunjie Geng;Zheng Li","doi":"10.1109/TAP.2025.3531140","DOIUrl":"https://doi.org/10.1109/TAP.2025.3531140","url":null,"abstract":"In this communication, a dual-beam substrate-integrated waveguide (SIW) leaky wave antenna (LWA) with stopband suppression based on radiation of −1st and −2nd spatial harmonics (SHs) is proposed, analyzed, and measured. First, the generation mechanism of dual-beam LWA operating on the coexistence of two SHs is introduced. Then, a novel butterfly-shaped slot is adopted to suppress the stopband (<inline-formula> <tex-math>$beta _{-1}P = pi $ </tex-math></inline-formula>) to improve the radiation performance. By finely tuning the horizontal size of the slot, the stopband can be suppressed, and an LWA with a wide dual-beam continuous scanning range and wide impedance bandwidth can be realized. In addition, the bandwidth and radiation efficiency of the antenna can be flexibly controlled by the vertical size within a certain range. To validate the design, a prototype is fabricated and measured. The measured results show that the peak gain of the proposed antenna is 14.5 dBi and the dual-beam radiation bandwidth for the coexistence of −1st and −2nd SHs is from 14.5 to 17.5 GHz (18.75%). The proposed antenna possesses the advantages of low cost, single layer, and dual-beam continuous frequency-scanning capability without stopband, thereby providing a promising candidate for mobile communication.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 5","pages":"3406-3411"},"PeriodicalIF":4.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918818","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

Engineering Leaky Wave Antennas: Modulated Impedance Surfaces and Radiative Characteristics 工程漏波天线：调制阻抗表面和辐射特性

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-24 DOI: 10.1109/TAP.2025.3531114

Kazem Zafari;Homayoon Oraizi;Haddi Ahmadi

{"title":"Engineering Leaky Wave Antennas: Modulated Impedance Surfaces and Radiative Characteristics","authors":"Kazem Zafari;Homayoon Oraizi;Haddi Ahmadi","doi":"10.1109/TAP.2025.3531114","DOIUrl":"https://doi.org/10.1109/TAP.2025.3531114","url":null,"abstract":"This article investigates the leakage radiation phenomenon between adjacent sinusoidal impedance surfaces, focusing on various structural configurations and their effects. Initially, the radiation between symmetrically placed sinusoidal inductive-impedance surfaces is examined. Nonsymmetric and inverse nonsymmetric configurations incorporating complementary capacitive surfaces are then explored. To enhance the modulation coefficient, square unit cells are transformed into rectangular ones. The Taylor one-parameter distribution (TOPD) method is applied to control leakage values along the antenna, enabling precise engineering of the desired sidelobe level (SLL). Excitation of these structures is accomplished using Vivaldi and inverse Vivaldi transitions. Two prototypes are constructed and tested, demonstrating the ability to steer the main beams from backward to forward, passing through the broadside direction, while achieving bidirectional radiation—an achievement that is difficult to realize with conventional leaky wave antennas (LWAs). The proposed LWAs exhibit wide bandwidth and wide-angle scanning, making them suitable for advanced wireless communication applications. The fabricated prototypes operate effectively from 12 to 22 GHz, achieving a gain range of 10–16 dB.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 3","pages":"1482-1495"},"PeriodicalIF":4.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553492","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

An X-/Ka-Band Shared-Aperture Linear-to-Circular Polarization Converter 一种X / ka波段共孔径线圆偏振变换器

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-24 DOI: 10.1109/TAP.2025.3531137

Wen-Juan Shu;Lu-Yang Ji;Rui-Zi Chen;Jian-Ying Li;Shi-Gang Zhou

{"title":"An X-/Ka-Band Shared-Aperture Linear-to-Circular Polarization Converter","authors":"Wen-Juan Shu;Lu-Yang Ji;Rui-Zi Chen;Jian-Ying Li;Shi-Gang Zhou","doi":"10.1109/TAP.2025.3531137","DOIUrl":"https://doi.org/10.1109/TAP.2025.3531137","url":null,"abstract":"This article presents a novel design method for a dual-band shared-aperture linear-to-circular polarization (LP-to-CP) converter. High-impedance structures and a bandpass frequency selective surface (FSS) are employed to achieve low interferences between the X- and Ka-band elements. In this article, a high-impedance structure is incorporated into the X-band element to eliminate high-order modes and prevent phase differences between TE and TM modes. Additionally, a bandpass FSS is employed to mitigate the influence of the high-frequency (HF) element on the low-frequency (LF) element. Based on this method, an X-/Ka-band converter with a two-layer structure is proposed. The X-band element consists of two groups of split rings and cross strips, which are printed on the topmost and bottom layers of the substrate. The Ka-band element comprises a Jerusalem cross printed in the middle layer and a metal strip printed on the same layer as the X-band element. The equivalent circuit model (ECM) is used to analyze the response of the converter. An X-/Ka-band LP-to-CP converter prototype is fabricated and integrated with array antennas to validate the design concept. The experimental results indicate that the array antennas integrated with the proposed converter can achieve an overlapped impedance and axial ratio bandwidths (ARBWs) of 11.1% (8.18–9.14 GHz) and 13.6% (25.95–29.73 GHz), with maximum gains of 12.8 and 16.4 dBic in two frequency bands, respectively.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 5","pages":"3004-3014"},"PeriodicalIF":4.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925205","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

Dual-Sleeves Printed Quadrifilar Helix Antenna With Quad-Band and Ultrawide Beamwidth for Satellite Communication Mobile Terminals 用于卫星通信移动终端的四波段超宽波束双套筒印刷四线螺旋天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-24 DOI: 10.1109/TAP.2025.3531010

Kunshan Mo;Xing Jiang;Lin Peng;Rui Fang

{"title":"Dual-Sleeves Printed Quadrifilar Helix Antenna With Quad-Band and Ultrawide Beamwidth for Satellite Communication Mobile Terminals","authors":"Kunshan Mo;Xing Jiang;Lin Peng;Rui Fang","doi":"10.1109/TAP.2025.3531010","DOIUrl":"https://doi.org/10.1109/TAP.2025.3531010","url":null,"abstract":"A quad-band printed quadrifilar helix antenna (QB-PQHA) with ultrawide half-power beamwidths (HPBWs) and 3 dB axial ratio beamwidths (ARBWs) for satellite communication applications on the movable platform is proposed in this article. To operate simultaneously at four frequencies and achieve wide bandwidths, the QB-PQHA features two dual-band PQHAs (DB-PQHAs) which are placed coaxially. The inner DB-PQHA is directly fed by the feed network at the bottom via the probes, while the outer DB-PQHA coupling is fed by the branches of the inner DB-PQHA. With optimal spacing between the inner and outer DB-PQHA, the coupling between the radiating branches of the inner and outer DB-PQHA not only enhances the antenna’s impedance matching, but also increases the HPBWs and 3 dB ARBWs. This QB-PQHA has been manufactured and measured, both the measured bandwidths and beamwidths are outstanding and in good agreement with the simulations. The measured four impedance bandwidths are 1.93–2.07 GHz, 2.16–2.4 GHz, 2.44–2.58 GHz, and 2.63–2.70 GHz. The HPBWs at their respective center frequencies exceed 148°, 152°, 158°, and 200°, while the 3 dB ARBWs exceed 144°, 166°, 164°, and 178°, respectively. This novel QB-PQHA is the first to achieve both ultrawide 3 dB ARBWs, HPBWs and exceptional bandwidth at all four frequencies. These outstanding features provide significant advantages for satellite communication terminals on fast-moving platforms, such as ships and vehicles.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 4","pages":"2395-2404"},"PeriodicalIF":4.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800962","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 Large-Aperture Multi-Subarray Radial Line Helical Array Antenna With Dielectric Windows for High-Power Microwave Applications 用于高功率微波应用的带介质窗口的大孔径多子阵径向线螺旋阵天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-24 DOI: 10.1109/TAP.2025.3531135

Tailai Ni;Bangji Wang;Song Qiu;Xiufang Wang;Qingxiang Liu

{"title":"A Large-Aperture Multi-Subarray Radial Line Helical Array Antenna With Dielectric Windows for High-Power Microwave Applications","authors":"Tailai Ni;Bangji Wang;Song Qiu;Xiufang Wang;Qingxiang Liu","doi":"10.1109/TAP.2025.3531135","DOIUrl":"https://doi.org/10.1109/TAP.2025.3531135","url":null,"abstract":"This article presents a large-aperture multi-subarray radial line helical array antenna equipped with dielectric windows for high-power microwave (HPM) applications. The design integrates additional subarrays, enhancing both the gain and power-handling capacity compared with those of conventional radial line helical arrays. Furthermore, a novel dielectric window with high transmission, high power-handling capacity, and compact structure is proposed. This window, along with radomes, establishes a balanced pressure <inline-formula> <tex-math>$text {SF}_{{6}}$ </tex-math></inline-formula> gas environment for the subarrays, offering a practical alternative to conventional vacuum environments and improving the practicality of the array. Modular design methods are employed to improve design efficiency, reduce system complexity, and enable potential future upgrades or modifications. To validate the proposed practical design of the radial line helical array antenna, an X-band array prototype consisting of 64 subarrays centered at 9.3 GHz was designed and experimentally evaluated. The experimental results show that the array achieved a gain of 36.60 dBi, an axial ratio (AR) of 0.14 dB, and a VSWR of 1.02 at 9.3 GHz. Additionally, the VSWR consistently remained below 1.3 across the 9.2–9.4-GHz bandwidth. Moreover, high-power experiments demonstrated that the power-handling capacity of the array exceeded 2.06 GW.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 4","pages":"2405-2415"},"PeriodicalIF":4.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800966","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 Semi-Analytical Method for Synthesis of a Flat-Top Beam Radiation Pattern of Three-Element Antenna Arrays 三元天线阵列平顶波束辐射图的半解析合成方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-24 DOI: 10.1109/TAP.2025.3531144

Piotr Słobodzian;Robert Borowiec;Grzegorz Jaworski

引用次数: 0

A 95–110 GHz Fully Metallic Multibeam Antenna Fed by E-Plane Groove Gap-Waveguided Butler Matrix for 6G Applications 面向6G应用的95 - 110ghz全金属多波束E-Plane沟槽波导巴特勒矩阵馈电天线

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-24 DOI: 10.1109/TAP.2025.3531119

Xin Xu;Dongze Zheng;Wei Hong;Yan Wang;Xiaohe Cheng;Yuan Yao

引用次数: 0

Real-Time Near-Field mmWave Measurements Using Screen-Printed Metasurfaces and IR Camera 使用丝网印刷超表面和红外相机的实时近场毫米波测量

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-23 DOI: 10.1109/TAP.2025.3530763

Johan Lundgren;Torleif Martin;Hamza Khalid;Marzieh Zabihipour;Deyu Tu;Isak Engquist;Daniel Sjöberg;Mats Gustafsson

{"title":"Real-Time Near-Field mmWave Measurements Using Screen-Printed Metasurfaces and IR Camera","authors":"Johan Lundgren;Torleif Martin;Hamza Khalid;Marzieh Zabihipour;Deyu Tu;Isak Engquist;Daniel Sjöberg;Mats Gustafsson","doi":"10.1109/TAP.2025.3530763","DOIUrl":"https://doi.org/10.1109/TAP.2025.3530763","url":null,"abstract":"This article elaborates on a technique for rapid real-time imaging of millimeter-wave (mmWave) power density over surfaces of several wavelengths in size. The approach involves using a screen-printed metasurface equipped with elements designed for absorption of mmWaves, along with an infrared (IR) camera to monitor temperature changes due to the absorption. By modulating the transmitted signal and applying the metasurface technique, which concentrates absorbed power onto specific regions, we successfully detected typical mmWave power levels. This method provides an efficient, noncontact means of rapidly evaluating and characterizing devices emitting in the mmWave spectrum. To illustrate the efficacy of the technique, we present two case studies at 28 GHz: fault detection on a 256-element square array antenna in the Ka-band, and mmWave power density imaging in the near-field of a mobile phone mockup over surfaces measuring 58 square centimeters (51 square wavelengths at 28 GHz). The results obtained can be analyzed in both the time and frequency domains, augmenting comprehension and assessment capabilities.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 4","pages":"2232-2244"},"PeriodicalIF":4.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143800898","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

From Curved to Planar: Enabling Large-Spacing Phased Array Antenna to Achieve Grating- Lobe-Free Wide-Angle Scanning 从曲面到平面：使大间距相控阵天线实现无光栅loble广角扫描

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-22 DOI: 10.1109/TAP.2025.3529772

Yinglu Wan;Shaowei Liao;Yuqi Wang;Liangying Li;Jia Wei;Wenquan Che;Quan Xue

{"title":"From Curved to Planar: Enabling Large-Spacing Phased Array Antenna to Achieve Grating- Lobe-Free Wide-Angle Scanning","authors":"Yinglu Wan;Shaowei Liao;Yuqi Wang;Liangying Li;Jia Wei;Wenquan Che;Quan Xue","doi":"10.1109/TAP.2025.3529772","DOIUrl":"https://doi.org/10.1109/TAP.2025.3529772","url":null,"abstract":"The phased array antenna (PAA) scanning faces challenges from element spacing requirements to prevent grating lobes, conflicting with the trend toward higher frequencies and cost reduction. Addressing this, this article presents a large-spacing planarized curved array (LSPCA) technology that enables PAAs to achieve grating-lobe-free wide-angle scanning with large spacings. Inspired by the radiation characteristics of Bessel beams in curved arrays, this technology maps a curved array into a large-spacing planar configuration equipped with heterogeneous beam elements (HBEs), inheriting the superior scanning capabilities of the curved format. The study provides theoretical foundations, design methodologies, and experimental validation for this technology. It details the mapping process from curved to planar arrays, examines its wideband characteristics, and evaluates the impact of critical parameters on performance. Experimental validation with two LSPCA configurations confirms the effectiveness of this technology: a <inline-formula> <tex-math>$1times 8$ </tex-math></inline-formula>-element array demonstrates ±75° scanning with an average element spacing of <inline-formula> <tex-math>$1.06lambda $ </tex-math></inline-formula> and sidelobe levels (SLLs) below −5 dB, while a <inline-formula> <tex-math>$1times 16$ </tex-math></inline-formula>-element array extends this to ±80° with an average spacing of <inline-formula> <tex-math>$1.27lambda $ </tex-math></inline-formula> and SLLs below −8 dB. Demonstrating exceptional grating-lobe-free wide-angle scanning at large spacings and leveraging formulaic design rather than complex optimization, this technology offers a promising solution for large-spacing arrays.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"73 5","pages":"2990-3003"},"PeriodicalIF":4.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925093","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

An Efficient Analysis Method for Artificial Dielectric Layers With Vertical Metal Inclusions Based on a Full-Wave Spectral-Domain Approach 基于全波谱域法的含垂直金属夹杂人工介质层的高效分析方法

IF 4.6 1区计算机科学

IEEE Transactions on Antennas and Propagation Pub Date : 2025-01-20 DOI: 10.1109/TAP.2025.3529189

Alexander J. van Katwijk;Andrea Neto;Daniele Cavallo

引用次数: 0