IEEE Antennas and Wireless Propagation Letters最新文献_第7页

Achievable Sidelobe Level of a MIMO Antenna Array With Randomly Arranged Elements 随机排列MIMO天线阵列可实现的旁瓣电平

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-11 DOI: 10.1109/LAWP.2026.3722898

Maksim A. Stepanov

{"title":"Achievable Sidelobe Level of a MIMO Antenna Array With Randomly Arranged Elements","authors":"Maksim A. Stepanov","doi":"10.1109/LAWP.2026.3722898","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3722898","url":null,"abstract":"This letter examines how the achievable peak sidelobe level of multiple-input–multiple-output (MIMO) antenna arrays with randomly arranged virtual aperture elements depends on the number of receiving and transmitting elements. It has been shown that, for a fixed number of elements in the virtual aperture, increasing its size leads to an increase in the peak sidelobe. It has been shown that the peak level of the sidelobes of a MIMO antenna array with randomly distributed elements is determined by the arrangement of the elements in the virtual aperture. This paper examines a one-dimensional MIMO antenna array with randomly arranged virtual aperture elements. For the case of an equally probable distribution of the coordinates of the receiving and transmitting elements, an expression has been derived that determines the achievable peak level of the sidelobes as a function of the density of the elements in its virtual aperture. The resulting ratio is generalized to the case of a two-dimensional MIMO antenna array with randomly arranged elements. The theoretical relationship has been confirmed by mathematical modeling. A MIMO antenna array configuration with randomly arranged elements, consisting of 10 receiving and 10 transmitting elements, is presented.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4018-4022"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124518","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

Independent Beamscanning Dual-Polarization Dual-Resonance Reconfigurable Reflectarray Antenna With High Aperture Efficiency 高孔径效率独立波束扫描双极化双共振可重构反射阵天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-18 DOI: 10.1109/LAWP.2026.3725127

Lining Xu;Xianjun Sheng;Ning Liu;Tianxi Feng;Hui Li;Lei Guo

{"title":"Independent Beamscanning Dual-Polarization Dual-Resonance Reconfigurable Reflectarray Antenna With High Aperture Efficiency","authors":"Lining Xu;Xianjun Sheng;Ning Liu;Tianxi Feng;Hui Li;Lei Guo","doi":"10.1109/LAWP.2026.3725127","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3725127","url":null,"abstract":"This letter presents an independent dual-polarization reconfigurable reflectarray antenna (RRA) with high aperture efficiency. Two pairs of patches and four varactor diodes are fabricated on a single layer to achieve over 360° continuous phase shift control in dual polarizations with good linearity. When the incidence angle varies from 0° to 50° in the TM and TE planes, the maximum phase and amplitude deviations are only 34° and 1.7 dB. The carefully optimized patch arrangement and bias circuits provide the element with independent phase control capability and a cross-polarization isolation of over 35 dB. A 12 × 12 element prototype was fabricated and measured. Experimental results demonstrate that the prototype supports ±60° 2-D beam scanning in both polarizations. For <italic>x</i> - and <italic>y</i> -polarizations, the measured aperture efficiencies are 52.2% and 51.1%, respectively, and the corresponding measured 3 dB gain bandwidths are 16.9% and 17.7%. The proposed design can improve the coverage area of the transmit antenna because of the high aperture efficiency, which is believed to be a good candidate for simultaneous wireless power and information transfer (SWIPT).","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4083-4087"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149124576","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 Miniaturized Vivaldi Antenna With Band-Specific Radiation Mechanism for Chamber Measurement 一种用于腔室测量的带辐射机理的小型化维瓦尔第天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-21 DOI: 10.1109/LAWP.2026.3726467

Bingjie Zhang;Zhe Zhang;Yifan Yin;Qi Cao;Xiaoxing Yin;Shunli Li

{"title":"A Miniaturized Vivaldi Antenna With Band-Specific Radiation Mechanism for Chamber Measurement","authors":"Bingjie Zhang;Zhe Zhang;Yifan Yin;Qi Cao;Xiaoxing Yin;Shunli Li","doi":"10.1109/LAWP.2026.3726467","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3726467","url":null,"abstract":"This letter presents a metal Vivaldi antenna designed for ultrawideband (UWB) unidirectional radiation. The antenna integrates a metallic loop, backward-bent slots, and a central Vivaldi flare, establishing a band-specific radiation mechanism which transitions from low-frequency loaded loop mode, midfrequency combined dipole mode, to high-frequency traveling-wave mode, effectively overcoming traditional physical aperture limits of Vivaldi antennas. The proposed antenna achieves an extraordinary bandwidth of 0.27 GHz to 12 GHz (44.4:1), with a realized gain of −1.3 to 11 dBi within a compact profile of 0.229<inline-formula><tex-math>$lambda_{L}$</tex-math></inline-formula> × 0.197<inline-formula><tex-math>$lambda_{L}$</tex-math></inline-formula> at 0.27 GHz. Moreover, it exhibits an endfire cross-polarization ratio above 28 dB, a front-to-back ratio (FBR) exceeding 11 dB at the lowest cutoff frequency, and a maximum phase-center variation of 7.0 cm. With its robust structure, extreme bandwidth, high polarization purity, and suppressed backward radiation, this design provides a practical solution for anechoic chamber measurements.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"4123-4127"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125498","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

Compact Tri-Band Self-Decoupled MIMO Antenna for 5G Smartphone Applications 5G智能手机应用的紧凑型三频自解耦MIMO天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-07-27 DOI: 10.1109/LAWP.2026.3716983

Qian Li;Jia-Yang Gao;Long-Xiang Zhang;Wu-Xun Qian

引用次数: 0

Near-Field Metasurface Coupling Pillbox Antenna for Steered Multiple Wavefronts Generation 用于定向多波前生成的近场超表面耦合Pillbox天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-07-21 DOI: 10.1109/LAWP.2026.3715794

Wencheng Hou;Yuanxi Cao;Jianxi Gao;Jianxing Li;Juan Chen;Sen Yan

{"title":"Near-Field Metasurface Coupling Pillbox Antenna for Steered Multiple Wavefronts Generation","authors":"Wencheng Hou;Yuanxi Cao;Jianxi Gao;Jianxing Li;Juan Chen;Sen Yan","doi":"10.1109/LAWP.2026.3715794","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3715794","url":null,"abstract":"In this letter, a compact low-profile antenna is proposed to generate multiple wavefronts with switchable propagation directions. The antenna comprises three parts, i.e., a pillbox beamforming network (BFN), a nonoffset slot array, and a Huygens metasurface (HMS). The design concept can be regarded as mapping the 3-D transmitarray onto a planar structure. The defocus feeding is replaced by the pillbox BFN, and the flexible phase manipulation capability is achieved by the near-field coupling HMS. A bifocal phase compensation principle is adopted in the HMS to optimize the performance of the steered beams, resulting in low sidelobe level (SLL) and scanning loss. Moreover, the HMS also help correct the phase distribution of the slot array, achieving gain improvement and beam direction correction. To verify the feasibility, two prototypes are fabricated and measured. For the pencil-beam design, the input ports switching can excite five beams with the scanning range of ±32°. The crossover level and gain variation of the beams are less than 4.5 dB and 2.0 dB. After the vortex phase is superimposed on HMS, the second prototype can implement the orbital angular momentum beams with different propagation directions.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 10","pages":"3853-3857"},"PeriodicalIF":4.6,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125538","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 Miniaturized Reconfigurable CP MIMO Antenna With Low Mutual Coupling for 5G Applications 面向5G应用的小型化可重构低互耦CP MIMO天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-12 DOI: 10.1109/LAWP.2026.3723209

Abdul Majeed;Yejun He;Yi Huang

引用次数: 0

Prediction of Shortwave Propagation Characteristics for High-Altitude Aircraft: A Wide-Area High-Resolution Grid-Based Ray-Tracing Method 高空飞行器短波传播特性预测：一种广域高分辨率网格射线追踪方法

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-09-01 Epub Date: 2026-07-02 DOI: 10.1109/LAWP.2026.3709291

Kai Xie;Ze Yao;Han Xu;Xiuyuan Liu;Mingxing Wu;Yan Liu

引用次数: 0

A Compact High-Isolation Dual-Polarized Patch Antenna With Mirror-Symmetric Feeding for Ku-Band Phased Arrays 一种用于ku波段相控阵的紧凑型高隔离双极化镜像对称馈电贴片天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-09-01 Epub Date: 2026-07-09 DOI: 10.1109/LAWP.2026.3711160

Wenyang Man;Jian Zhou;Yiqing Wang;Kelei Wei;Ke Meng;Chen Pang;Ke Xiao;Shunlian Chai;Yongzhen Li

{"title":"A Compact High-Isolation Dual-Polarized Patch Antenna With Mirror-Symmetric Feeding for Ku-Band Phased Arrays","authors":"Wenyang Man;Jian Zhou;Yiqing Wang;Kelei Wei;Ke Meng;Chen Pang;Ke Xiao;Shunlian Chai;Yongzhen Li","doi":"10.1109/LAWP.2026.3711160","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3711160","url":null,"abstract":"This letter presents a compact high-isolation dual-linearly polarized microstrip patch antenna element and an <inline-formula><tex-math>$8times 8$</tex-math></inline-formula> Ku-band phased-array prototype based on an element-to-array co-design strategy. By jointly considering port isolation, polarization purity, scan stability, and T/R-module integration, the proposed design enables compact half-wavelength array integration with low mutual coupling and low cross-polarization scanning performance in a printed circuit board (PCB) compatible platform. Measurements from 15 GHz to 16.8 GHz show reflection coefficients below −10 dB, port isolation better than 32 dB, and adjacent element copolarized mutual coupling below −20 dB. The active voltage standing-wave ratio (VSWR) remains below 3 within <inline-formula><tex-math>$pm 45^circ$</tex-math></inline-formula> scanning. Radiation-pattern measurements show that the antenna element exhibits a broadside cross-polarization level below −25 dB, while the <inline-formula><tex-math>$8times 8$</tex-math></inline-formula> array prototype achieves a cross-polarization level below −33 dB for scan angles from <inline-formula><tex-math>$-45^circ$</tex-math></inline-formula> to <inline-formula><tex-math>$+45^circ$</tex-math></inline-formula>. These results demonstrate a practical balance among compact dual-polarized integration, high isolation, low cross polarization, scan stability, and PCB process compatibility for Ku-band phased array systems.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 9","pages":"3526-3530"},"PeriodicalIF":4.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902789","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

Mechanical Reconfigurable Phase Modulation in Aperture-Shared Articulated-Screw Metasurface for Spin-Decoupled Wavefront Shaping 用于自旋解耦波前整形的孔径共享关节螺旋超表面的机械可重构相位调制

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-09-01 Epub Date: 2026-07-20 DOI: 10.1109/LAWP.2026.3715172

Xinmin Lian;Jianfeng Zhu;Quan Xue

{"title":"Mechanical Reconfigurable Phase Modulation in Aperture-Shared Articulated-Screw Metasurface for Spin-Decoupled Wavefront Shaping","authors":"Xinmin Lian;Jianfeng Zhu;Quan Xue","doi":"10.1109/LAWP.2026.3715172","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3715172","url":null,"abstract":"This letter presents a new mechanically reconfigurable reflective metasurface (MS) that enables independent wavefront control of left-hand circularly polarized (LHCP) and right-hand circularly polarized (RHCP) waves and dynamic switching between distinct functions. The design uses a single type of screw-adjustable ridge waveguide unit cell, offering two mechanical degrees of freedom: vertical displacement for continuous dynamic phase tuning and in-plane rotation for Pancharatnam–Berry phase. This dual-control mechanism achieves full 2π phase coverage with continuous phase adjustability and full decoupling of phase profiles for the two circular polarizations. The MS unit cell operates from 9.7 GHz to 10.3 GHz with stable reflection performance. As the design is a metal-only one without dielectric loss, the reflection loss is low. By re-adjusting the screw matrix, the same aperture can be reconfigured to switch between entirely different functionalities. We experimentally validate this concept with a single MS configured as an orbital angular momentum generator (<italic>l</i> = 1 for LHCP and <italic>l</i> = 2 for RHCP) and, after reconfiguration, as a dual-focus lens focusing at different spatial positions for LHCP and RHCP, respectively. Both states, characterized in the microwave band, show stable performance and excellent agreement with simulations. This work offers a versatile platform for spin-decoupled, continuously tunable wave manipulation tailored for mission-level reconfigurable microwave systems.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 9","pages":"3686-3690"},"PeriodicalIF":4.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902897","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, High-Gain, High-Efficiency Millimeter-Wave Endfire Fabry–Pérot Cavity Antenna Without Independent Partially Reflective Surface 无独立部分反射面的宽带、高增益、高效率毫米波端射法布里-波腔天线

IF 4.6 2区计算机科学

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-09-01 Epub Date: 2026-07-14 DOI: 10.1109/LAWP.2026.3713610

Runcong Lv;Qing-Yi Guo

{"title":"A Wideband, High-Gain, High-Efficiency Millimeter-Wave Endfire Fabry–Pérot Cavity Antenna Without Independent Partially Reflective Surface","authors":"Runcong Lv;Qing-Yi Guo","doi":"10.1109/LAWP.2026.3713610","DOIUrl":"https://doi.org/10.1109/LAWP.2026.3713610","url":null,"abstract":"A wideband, high-gain millimeter-wave (mmW) endfire Fabry–Pérot Cavity (EF-FPC) antenna with high efficiency has been proposed in this letter. The proposed antenna with a simple structure consists of two metallic slabs and a single-layer printed circuit board substrate. By utilizing the self-mismatch scheme of the interface between substrate and air, intrinsic partial reflection can be achieved without the need for an independent partially reflective surface. Combined with a via-based shaped ground within the single-layered substrate, multiple resonant modes can be excited, contributing to bandwidth and gain enhancement. After measurement, the overlap bandwidth of the antenna is 11.45%, and it has a peak gain of 15.64 dBi. The proposed antenna yields a radiation efficiency of 95% and a maximum aperture efficiency of 92%, respectively. Notably, this is the first time that an EF-FPC antenna with a simple structure is realized. With the characteristics of wideband, high-gain, high-efficiency, low-profile, and low-complexity, the proposed antenna has enormous potential for application in next-generation communication systems.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 9","pages":"3601-3605"},"PeriodicalIF":4.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148902899","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