Pub Date : 2025-12-23DOI: 10.1109/LAWP.2025.3647406
Nguyen Van Thang;Da-Hyun Lee;Jae-Young Chung
This letter presents a compact X-/Ku-band frequency- and polarization-reconfigurable antenna element in the array antenna layer for user terminals in satellite communication, implemented using p-i-n diodes. The antenna element integrates two p-i-n diodes to enable frequency reconfiguration for half-duplex operation: RX mode covers 10.7 GHz to 12.7 GHz with horizontal polarization, and TX mode operates at 13.85 GHz to 14 GHz with vertical polarization. Parasitic patches are incorporated in the RX mode to achieve wideband coverage with a flat gain response. In both modes, the antenna maintains a stable realized gain of approximately 5 dBi to 6 dBi. Circular polarization is achieved by arranging four linearly polarized elements in a rotational sequence. A 4 × 4 element array prototype was fabricated and tested in an anechoic chamber, demonstrating peak realized gains of 15.8 dBic (RX) and 13.2 dBic (TX), with cross-polarization isolation exceeding 20 dB. These results indicate that the proposed antenna is a promising candidate for compact, reconfigurable user terminals in half-duplex satellite communication systems.
{"title":"Frequency-Reconfigurable Antenna Element for X-/Ku-Band Satellite User Terminals","authors":"Nguyen Van Thang;Da-Hyun Lee;Jae-Young Chung","doi":"10.1109/LAWP.2025.3647406","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3647406","url":null,"abstract":"This letter presents a compact X-/Ku-band frequency- and polarization-reconfigurable antenna element in the array antenna layer for user terminals in satellite communication, implemented using p-i-n diodes. The antenna element integrates two p-i-n diodes to enable frequency reconfiguration for half-duplex operation: RX mode covers 10.7 GHz to 12.7 GHz with horizontal polarization, and TX mode operates at 13.85 GHz to 14 GHz with vertical polarization. Parasitic patches are incorporated in the RX mode to achieve wideband coverage with a flat gain response. In both modes, the antenna maintains a stable realized gain of approximately 5 dBi to 6 dBi. Circular polarization is achieved by arranging four linearly polarized elements in a rotational sequence. A 4 × 4 element array prototype was fabricated and tested in an anechoic chamber, demonstrating peak realized gains of 15.8 dBic (RX) and 13.2 dBic (TX), with cross-polarization isolation exceeding 20 dB. These results indicate that the proposed antenna is a promising candidate for compact, reconfigurable user terminals in half-duplex satellite communication systems.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"936-940"},"PeriodicalIF":4.8,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116805","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}
An efficient diploid genes (DG) optimization algorithm combined with multiple local surrogate models (LSM) is proposed for high antenna efficiency dielectric lens antenna (DLA). The masking mechanism, group evaluation mechanism, hybrid crossover and adaptive mutation are integrated into the DG to expand population diversity and the search range. The LSMs are neural networks with meta-learning framework, which can evaluate the DLAs and reduce the reliance on full-wave simulations. Finally, a prototype of DLA in the 60 GHz to 90 GHz was designed using the DGMLS. The measured results show that the peak gain is 27.5 dBi, the maximum antenna efficiency is 86.5%, the maximum sidelobe level is −15 dB and the minimum front-to-back ratio is 15.1 dB.
{"title":"An Efficient Optimization Method for E-Band Dielectric Lens Antenna With High Antenna Efficiency","authors":"Chen Wang;Bo-da Jing;Yue Zhao;Bin Shi;Jing Ma;Yu-ting Zhang;Wen-tao Zhang;Lin Peng","doi":"10.1109/LAWP.2025.3645448","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3645448","url":null,"abstract":"An efficient diploid genes (DG) optimization algorithm combined with multiple local surrogate models (LSM) is proposed for high antenna efficiency dielectric lens antenna (DLA). The masking mechanism, group evaluation mechanism, hybrid crossover and adaptive mutation are integrated into the DG to expand population diversity and the search range. The LSMs are neural networks with meta-learning framework, which can evaluate the DLAs and reduce the reliance on full-wave simulations. Finally, a prototype of DLA in the 60 GHz to 90 GHz was designed using the DGMLS. The measured results show that the peak gain is 27.5 dBi, the maximum antenna efficiency is 86.5%, the maximum sidelobe level is −15 dB and the minimum front-to-back ratio is 15.1 dB.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"931-935"},"PeriodicalIF":4.8,"publicationDate":"2025-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116861","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}
Pub Date : 2025-12-15DOI: 10.1109/LAWP.2025.3644657
Yi Li;Fangbing Xu;Chao Gu;Zimu Wang;Peng Ren;Steven Gao
This letter presents an angle-selective surface (ASS) with a narrow angular domain and narrow angular transition range. The proposed ASS consists of two identical frequency-selective surface layers separated by an air gap. The proposed structure allows electromagnetic waves to transmit at specific incident angles under TE polarization, exhibiting sharp angular selectivity while maintaining a relatively compact unit cell size. At 17.74 GHz, it permits transmission for waves incident at 30$^{circ }$ with an extremely narrow acceptance angle range of 29.95$^{circ }$ to 30.25$^{circ }$ ($S_{21}>{-1},text{ dB}$), demonstrating high transmission efficiency. Simultaneously, it effectively blocks waves at incident angles of 0$^{circ }$ to 26$^{circ }$ and 33$^{circ }$ to 80$^{circ }$ ($S_{21}< {-20},text{ dB}$), featuring an ultra-narrow angular transition range that mitigates cochannel interference in signal transmission. Furthermore, an equivalent circuit model was developed to analyze the structure, and a prototype was fabricated to validate its performance. The measured results agree well with simulations, confirming the effectiveness of the proposed design.
{"title":"Design of Angle-Selective Surface With Narrow Angular Domain and Ultra-Narrow Angular Transition Range","authors":"Yi Li;Fangbing Xu;Chao Gu;Zimu Wang;Peng Ren;Steven Gao","doi":"10.1109/LAWP.2025.3644657","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3644657","url":null,"abstract":"This letter presents an angle-selective surface (ASS) with a narrow angular domain and narrow angular transition range. The proposed ASS consists of two identical frequency-selective surface layers separated by an air gap. The proposed structure allows electromagnetic waves to transmit at specific incident angles under TE polarization, exhibiting sharp angular selectivity while maintaining a relatively compact unit cell size. At 17.74 GHz, it permits transmission for waves incident at 30<inline-formula><tex-math>$^{circ }$</tex-math></inline-formula> with an extremely narrow acceptance angle range of 29.95<inline-formula><tex-math>$^{circ }$</tex-math></inline-formula> to 30.25<inline-formula><tex-math>$^{circ }$</tex-math></inline-formula> (<inline-formula><tex-math>$S_{21}>{-1},text{ dB}$</tex-math></inline-formula>), demonstrating high transmission efficiency. Simultaneously, it effectively blocks waves at incident angles of 0<inline-formula><tex-math>$^{circ }$</tex-math></inline-formula> to 26<inline-formula><tex-math>$^{circ }$</tex-math></inline-formula> and 33<inline-formula><tex-math>$^{circ }$</tex-math></inline-formula> to 80<inline-formula><tex-math>$^{circ }$</tex-math></inline-formula> (<inline-formula><tex-math>$S_{21}< {-20},text{ dB}$</tex-math></inline-formula>), featuring an ultra-narrow angular transition range that mitigates cochannel interference in signal transmission. Furthermore, an equivalent circuit model was developed to analyze the structure, and a prototype was fabricated to validate its performance. The measured results agree well with simulations, confirming the effectiveness of the proposed design.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"926-930"},"PeriodicalIF":4.8,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116841","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}
Design approach to wide-angle azimuthal null frequency-scanning antennas under triple-mode resonance is proposed. A 1.75-wavelength asymmetric prototype magnetic dipole is mapped into an asymmetric circular sector patch antenna under the principal, fifth-order mode resonance. As a result, the null scanning range can be significantly extended owing to the dominant fifth-order resonance, such that the azimuth null scanning range can be enhanced by 30% compared to the traditional one under third-order resonance. A prototype antenna with central angle of α = 300° is designed, fabricated, and measured to validate the design approach. On the one hand, it is demonstrated that the prototype antenna exhibits a single null scanning range from ϕ = 266° to 84°, which nearly covers half of the horizontal plane, within an available band ranging from 2.23 GHz to 2.91 GHz for null depth smaller than −10 dB. On the other hand, the proposed antenna bears a simple, relatively compact size without incorporating external parasitic elements owing to the asymmetric structure.
{"title":"Wide-Angle Azimuthal Null Frequency-Scanning Antenna Under Multimode Resonance","authors":"Xin-Yao Li;Wen-Jun Lu;Xiao-Hui Mao;Wei Zhou;Lei Zhu","doi":"10.1109/LAWP.2025.3644000","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3644000","url":null,"abstract":"Design approach to wide-angle azimuthal null frequency-scanning antennas under triple-mode resonance is proposed. A 1.75-wavelength asymmetric prototype magnetic dipole is mapped into an asymmetric circular sector patch antenna under the principal, fifth-order mode resonance. As a result, the null scanning range can be significantly extended owing to the dominant fifth-order resonance, such that the azimuth null scanning range can be enhanced by 30% compared to the traditional one under third-order resonance. A prototype antenna with central angle of <italic>α</i> = 300° is designed, fabricated, and measured to validate the design approach. On the one hand, it is demonstrated that the prototype antenna exhibits a single null scanning range from <italic>ϕ</i> = 266° to 84°, which nearly covers half of the horizontal plane, within an available band ranging from 2.23 GHz to 2.91 GHz for null depth smaller than −10 dB. On the other hand, the proposed antenna bears a simple, relatively compact size without incorporating external parasitic elements owing to the asymmetric structure.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"916-920"},"PeriodicalIF":4.8,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116864","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}
Pub Date : 2025-12-15DOI: 10.1109/LAWP.2025.3644401
Tengfei Gao;Zhaowen Yan;Kunkun Hu;Fuyu Zhao;Xinyu Zhao;Jianhao Ge
In this letter, a planar sheet-type composite electromagnetic near-field probe is proposed for acquiring electromagnetic field intensity in the operating environment of chips. Designed for measuring the normal electric field and tangential magnetic field components, this probe comprises an electric field probe and a magnetic field probe, with an operating frequency range of 100 kHz to 3 GHz and an overall dimensions of 14.5 mm × 10 mm × 1.3 mm. The electric field probe sensing part incorporates a circular monopole, while the magnetic field probe sensing part incorporates two G-shaped loops. Through the analysis of its equivalent circuit model, the primary factors influencing the probe output are determined. Simulations and measurements were conducted on the transmission coefficient, calibration factor, isolation coefficient, and spatial resolution of the probe. Finally, a shielding cavity experiment verifies its detection performance, confirming utility in near-field measurements.
本文提出了一种平面片状复合电磁近场探头，用于获取芯片工作环境下的电磁场强度。该探头主要用于测量法向电场和切向磁场分量，由电场探头和磁场探头组成，工作频率范围为100khz ~ 3ghz，外形尺寸为14.5 mm × 10mm × 1.3 mm。电场探头感测部分包含一个圆形单极子，磁场探头感测部分包含两个g形环路。通过对其等效电路模型的分析，确定了影响探头输出的主要因素。对探头的透射系数、标定系数、隔离系数和空间分辨率进行了仿真和测量。最后，通过屏蔽腔实验验证了其检测性能，验证了其在近场测量中的实用性。
{"title":"A Planar Sheet-Type Composite Electric and Magnetic Near-Field Probe","authors":"Tengfei Gao;Zhaowen Yan;Kunkun Hu;Fuyu Zhao;Xinyu Zhao;Jianhao Ge","doi":"10.1109/LAWP.2025.3644401","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3644401","url":null,"abstract":"In this letter, a planar sheet-type composite electromagnetic near-field probe is proposed for acquiring electromagnetic field intensity in the operating environment of chips. Designed for measuring the normal electric field and tangential magnetic field components, this probe comprises an electric field probe and a magnetic field probe, with an operating frequency range of 100 kHz to 3 GHz and an overall dimensions of 14.5 mm × 10 mm × 1.3 mm. The electric field probe sensing part incorporates a circular monopole, while the magnetic field probe sensing part incorporates two G-shaped loops. Through the analysis of its equivalent circuit model, the primary factors influencing the probe output are determined. Simulations and measurements were conducted on the transmission coefficient, calibration factor, isolation coefficient, and spatial resolution of the probe. Finally, a shielding cavity experiment verifies its detection performance, confirming utility in near-field measurements.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"921-925"},"PeriodicalIF":4.8,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116824","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}
This letter proposes an approach to improve performance of a dual-circularly polarized (CP) patch using nonuniform parasitic elements. To overcome the limited operating bandwidth and poor isolation of the conventional dual-CP patch, multiple parasitic elements are used to produce additional resonance to improve the operating bandwidth. Interestingly, the use of parasitic elements makes the phase centers of the right-hand CP and left-hand CP states close to each other. Accordingly, high isolation can be obtained. It is also worth noting that by using nonuniform parasitic elements, wide isolation bandwidth can be attained. The fabricated antenna prototype with overall dimensions of 0.83λ × 0.83λ × 0.03λ has measured operating bandwidth of 17.8% (5.1 GHz to 6.1 GHz). Across this band, the isolation is always higher than 20 dB, and the broadside gain is from 5.2 dBi to 7.6 dBi.
{"title":"Wideband High-Isolation Dual-Circularly Polarized Co-Aperture Antenna Using Nonuniform Parasitic Elements","authors":"Hung Tran-Huy;Tu Le-Tuan;Phuong Kim-Thi;Niamat Hussain;Truong Khang Nguyen;Nghia Nguyen-Trong","doi":"10.1109/LAWP.2025.3643526","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3643526","url":null,"abstract":"This letter proposes an approach to improve performance of a dual-circularly polarized (CP) patch using nonuniform parasitic elements. To overcome the limited operating bandwidth and poor isolation of the conventional dual-CP patch, multiple parasitic elements are used to produce additional resonance to improve the operating bandwidth. Interestingly, the use of parasitic elements makes the phase centers of the right-hand CP and left-hand CP states close to each other. Accordingly, high isolation can be obtained. It is also worth noting that by using nonuniform parasitic elements, wide isolation bandwidth can be attained. The fabricated antenna prototype with overall dimensions of 0.83λ × 0.83λ × 0.03λ has measured operating bandwidth of 17.8% (5.1 GHz to 6.1 GHz). Across this band, the isolation is always higher than 20 dB, and the broadside gain is from 5.2 dBi to 7.6 dBi.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"911-915"},"PeriodicalIF":4.8,"publicationDate":"2025-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116854","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}
A trimode wideband dipole antenna that simultaneously excites one odd-order and two even-order mode resonances is proposed with the help of the characteristic mode analysis (CMA) in this letter. First, a central slot is introduced in a conventional dipole structure to raise the third-order resonant frequency and to move its current nulls closer to those of the fourth-order mode. Then, a pair of asymmetric stubs is loaded at the common region of the resonant current nulls of third-order and fourth-order modes, leading the resonant frequencies of the third-order and fourth-order modes shift toward the second-order mode. Finally, the offset-fed location is determined based on the current distributions analyzed through the CMA, enabling the simultaneous excitation of the second-order, third-order, and fourth-order modes. The simulated trimode wideband dipole antenna achieves a 65.2% fractional bandwidth (2.77 GHz to 5.45 GHz) with a peak gain of 4.3 dBi. A prototype of the proposed antenna is fabricated and measured, exhibiting good agreement with the simulated results.
{"title":"A Trimode Wideband Dipole Antenna With Odd-Mode and Even-Mode Simultaneous Excitation","authors":"Guo Yang;Bin Shao;Ruqi Xiao;Zhenzhong Chen;Jindong Zhang;Wen Wu","doi":"10.1109/LAWP.2025.3643518","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3643518","url":null,"abstract":"A trimode wideband dipole antenna that simultaneously excites one odd-order and two even-order mode resonances is proposed with the help of the characteristic mode analysis (CMA) in this letter. First, a central slot is introduced in a conventional dipole structure to raise the third-order resonant frequency and to move its current nulls closer to those of the fourth-order mode. Then, a pair of asymmetric stubs is loaded at the common region of the resonant current nulls of third-order and fourth-order modes, leading the resonant frequencies of the third-order and fourth-order modes shift toward the second-order mode. Finally, the offset-fed location is determined based on the current distributions analyzed through the CMA, enabling the simultaneous excitation of the second-order, third-order, and fourth-order modes. The simulated trimode wideband dipole antenna achieves a 65.2% fractional bandwidth (2.77 GHz to 5.45 GHz) with a peak gain of 4.3 dBi. A prototype of the proposed antenna is fabricated and measured, exhibiting good agreement with the simulated results.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"906-910"},"PeriodicalIF":4.8,"publicationDate":"2025-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116846","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}
This letter proposes a fast iterative solution method for accurately analyzing the electromagnetic scattering of honeycomb using the global generalized product-type biconjugate gradient stabilized with l parameter [GPBICGSTAB(l)] algorithm combined with the thin dielectric sheet method. In the global GPBICGSTAB(l) algorithm, a polynomial $H(lambda )$ with $L + 1$ terms is introduced to accelerate the update of induced currents during the iteration process, thereby enabling the rapid solution of the Method of Moments matrix equations. The accuracy of the proposed algorithm is validated by comparing its calculated radar cross section results with both the FEKO calculation results and the measured data of a honeycomb physical model. Compared with the recycling BICGSTAB for solving impedance matrix equations, the proposed algorithm reduces the number of convergence iterations by 46%, effectively improving convergence efficiency. In addition, the algorithm demonstrates significant optimization in computational time, achieving a reduction of up to 60%.
本文提出了一种利用l参数稳定的全局广义积型双共轭梯度[GPBICGSTAB(l)]算法结合薄介质片法精确分析蜂窝电磁散射的快速迭代求解方法。在全局GPBICGSTAB(l)算法中，引入了一个项为$ l + 1$的多项式$H(lambda)$，加速了迭代过程中感应电流的更新，从而实现了矩量法矩阵方程的快速求解。将该算法的雷达截面计算结果与FEKO计算结果和蜂窝物理模型的实测数据进行比较，验证了算法的准确性。与循环BICGSTAB求解阻抗矩阵方程相比，该算法收敛迭代次数减少46%，有效提高了收敛效率。此外，该算法在计算时间上表现出显著的优化，实现了高达60%的减少。
{"title":"An Accurate and Fast Method for Solving RCS of Honeycomb Structures Based on the Global GPBICGSTAB(l)-TDS Algorithm","authors":"Haijun Lu;Zhiming Li;Wei Luo;Mei Bi;Hongxing Liu;Xiaolong Weng","doi":"10.1109/LAWP.2025.3643426","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3643426","url":null,"abstract":"This letter proposes a fast iterative solution method for accurately analyzing the electromagnetic scattering of honeycomb using the global generalized product-type biconjugate gradient stabilized with <italic>l</i> parameter [GPBICGSTAB(<italic>l</i>)] algorithm combined with the thin dielectric sheet method. In the global GPBICGSTAB(<italic>l</i>) algorithm, a polynomial <inline-formula><tex-math>$H(lambda )$</tex-math></inline-formula> with <inline-formula><tex-math>$L + 1$</tex-math></inline-formula> terms is introduced to accelerate the update of induced currents during the iteration process, thereby enabling the rapid solution of the Method of Moments matrix equations. The accuracy of the proposed algorithm is validated by comparing its calculated radar cross section results with both the FEKO calculation results and the measured data of a honeycomb physical model. Compared with the recycling BICGSTAB for solving impedance matrix equations, the proposed algorithm reduces the number of convergence iterations by 46%, effectively improving convergence efficiency. In addition, the algorithm demonstrates significant optimization in computational time, achieving a reduction of up to 60%.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"901-905"},"PeriodicalIF":4.8,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116820","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}
Pub Date : 2025-12-10DOI: 10.1109/LAWP.2025.3642822
Le Cao;Bowen Tan;Nannan Chen;Shuaijie Liu;Denglin Wang;Xuqing Liu
This letter presents an ultra-broadband, lightweight honeycomb absorber for X/Ku-band (8 GHz to 18 GHz) applications to address the persistent challenge of balancing wide bandwidth with structural utility. The proposed absorber features a simulation-optimized structure with inverted-hexagonal pyramidal cavity, which extends the wave path by 210% to excite multiresonant modes as well as a 45% MXene aerogel filler that provides tailored dielectric loss, thereby enabling full-band coverage. The fabricated absorber achieves an exceptional −10 dB absorption bandwidth of 11.36 GHz, with excellent agreement between simulation and measurement (error < 3%). The minimum reflection loss is notably as deep as –38.19 dB. Mechanically, the unit cell demonstrates a high load-bearing capacity, with compressive tests showing a plateau stress 2–2.5 times greater than that of a conical unit, while maintaining a low overall density of 0.23 g/cm3 and exhibiting robust angular stability. This work provides a compact and structurally robust solution for next-generation 5G base stations and airborne radar systems, where ultrawideband absorption and mechanical load-bearing are simultaneously required.
{"title":"A Multiresonant Ultrabroadband X/Ku-Band Honeycomb Absorber Filled With MXene Aerogel in Inverted-Hexagonal Pyramidal Cavities","authors":"Le Cao;Bowen Tan;Nannan Chen;Shuaijie Liu;Denglin Wang;Xuqing Liu","doi":"10.1109/LAWP.2025.3642822","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3642822","url":null,"abstract":"This letter presents an ultra-broadband, lightweight honeycomb absorber for X/Ku-band (8 GHz to 18 GHz) applications to address the persistent challenge of balancing wide bandwidth with structural utility. The proposed absorber features a simulation-optimized structure with inverted-hexagonal pyramidal cavity, which extends the wave path by 210% to excite multiresonant modes as well as a 45% MXene aerogel filler that provides tailored dielectric loss, thereby enabling full-band coverage. The fabricated absorber achieves an exceptional −10 dB absorption bandwidth of 11.36 GHz, with excellent agreement between simulation and measurement (error < 3%). The minimum reflection loss is notably as deep as –38.19 dB. Mechanically, the unit cell demonstrates a high load-bearing capacity, with compressive tests showing a plateau stress 2–2.5 times greater than that of a conical unit, while maintaining a low overall density of 0.23 g/cm<sup>3</sup> and exhibiting robust angular stability. This work provides a compact and structurally robust solution for next-generation 5G base stations and airborne radar systems, where ultrawideband absorption and mechanical load-bearing are simultaneously required.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"896-900"},"PeriodicalIF":4.8,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116902","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}
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