Pub Date : 2025-12-10DOI: 10.1109/LAWP.2025.3642309
Yuhan Fan;Ya Fei Wu;Li-Wei Zhao;Yongxin Guo
Subarraying offers a promising strategy to reduce the complexity of multibeam phased arrays. However, designing implementation-friendly subarray configurations with good sidelobe performance remains challenging due to the inherent nonconvexity. This letter presents an efficient method for synthesizing physically contiguous multibeam subarrayed phased arrays. First, a weighted clustering model is formulated based on pattern-matching theory. Second, an adapted K-means algorithm combined with analytical phase weighting is employed to rapidly generate candidate subarrays and perform beamforming. Finally, an efficient search algorithm is developed to identify a low-sidelobe solution. Numerical results demonstrate that the proposed method is versatile across various array types and achieves enhanced sidelobe suppression while maintaining subarray contiguity for practical implementation.
{"title":"Pattern Synthesis for Beam Scanning of Contiguous Multibeam Subarrayed Phased Array","authors":"Yuhan Fan;Ya Fei Wu;Li-Wei Zhao;Yongxin Guo","doi":"10.1109/LAWP.2025.3642309","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3642309","url":null,"abstract":"Subarraying offers a promising strategy to reduce the complexity of multibeam phased arrays. However, designing implementation-friendly subarray configurations with good sidelobe performance remains challenging due to the inherent nonconvexity. This letter presents an efficient method for synthesizing physically contiguous multibeam subarrayed phased arrays. First, a weighted clustering model is formulated based on pattern-matching theory. Second, an adapted K-means algorithm combined with analytical phase weighting is employed to rapidly generate candidate subarrays and perform beamforming. Finally, an efficient search algorithm is developed to identify a low-sidelobe solution. Numerical results demonstrate that the proposed method is versatile across various array types and achieves enhanced sidelobe suppression while maintaining subarray contiguity for practical implementation.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"891-895"},"PeriodicalIF":4.8,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116879","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 : 2025-12-09DOI: 10.1109/LAWP.2025.3641967
Jun-Feng Wang;Hao Huang;Zhizhang Chen
This letter presents a fast and accurate spatial finite-difference temporal differential (SFDTD) method for time-domain electromagnetic modeling. First, the eigenmode analysis reveals that only a limited number of eigenmodes located at the top of the eigen-spectrum make significant contributions to the numerical solution. Then, by introducing artificial anisotropy (AA) parameters, an AA-SFDTD method characterized by low dispersion is proposed. Based on eigenmode analysis and by truncating the mode expansion order in the AA-SFDTD method, we develop a novel SFDTD approach that considers both speed and accuracy. Numerical simulation experiments validate the high efficiency and precision of the proposed method.
{"title":"Toward a Fast and Accurate SFDTD Method Based on Eigenmode Analysis and Artificial Anisotropy","authors":"Jun-Feng Wang;Hao Huang;Zhizhang Chen","doi":"10.1109/LAWP.2025.3641967","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3641967","url":null,"abstract":"This letter presents a fast and accurate spatial finite-difference temporal differential (SFDTD) method for time-domain electromagnetic modeling. First, the eigenmode analysis reveals that only a limited number of eigenmodes located at the top of the eigen-spectrum make significant contributions to the numerical solution. Then, by introducing artificial anisotropy (AA) parameters, an AA-SFDTD method characterized by low dispersion is proposed. Based on eigenmode analysis and by truncating the mode expansion order in the AA-SFDTD method, we develop a novel SFDTD approach that considers both speed and accuracy. Numerical simulation experiments validate the high efficiency and precision of the proposed method.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"866-870"},"PeriodicalIF":4.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116819","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 : 2025-12-09DOI: 10.1109/LAWP.2025.3641984
Xin-Ran Jin;Shen-Yun Wang
A copolarization (CoP) beam-steering method of antenna array with its cross-polarization level (XPL) control is proposed. The optimal excitation distribution is calculated by maximizing the ratio defined as the CoP electric field energy density in the beam direction over the sum of cross-polarization (XP) electric field energy density within the half-power beamwidth (HPBW) region and total electric field energy density within the sidelobe region. An XP component weight is introduced for XPL control. To validate the proposed method, a 1 × 8 patch antenna array operating at 3.4 GHz is designed and fabricated with each element randomly rotated by a certain angle along its axis. The 1 × 8 patch antenna array achieves beam steering from −45° to 45° in the elevation space with its XPL less than −30 dB within the HPBW region. The measured and simulated beam patterns scanning at different angles with low XPL are in good agreement.
{"title":"Beam Steering of Antenna Array with Cross-Polarization Level Control","authors":"Xin-Ran Jin;Shen-Yun Wang","doi":"10.1109/LAWP.2025.3641984","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3641984","url":null,"abstract":"A copolarization (CoP) beam-steering method of antenna array with its cross-polarization level (XPL) control is proposed. The optimal excitation distribution is calculated by maximizing the ratio defined as the CoP electric field energy density in the beam direction over the sum of cross-polarization (XP) electric field energy density within the half-power beamwidth (HPBW) region and total electric field energy density within the sidelobe region. An XP component weight is introduced for XPL control. To validate the proposed method, a 1 × 8 patch antenna array operating at 3.4 GHz is designed and fabricated with each element randomly rotated by a certain angle along its axis. The 1 × 8 patch antenna array achieves beam steering from −45° to 45° in the elevation space with its XPL less than −30 dB within the HPBW region. The measured and simulated beam patterns scanning at different angles with low XPL are in good agreement.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"871-875"},"PeriodicalIF":4.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116831","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 : 2025-12-09DOI: 10.1109/LAWP.2025.3642170
Jia Fan Gao;Yi Hui Zhu;Feng Han Lin
The bandwidth of low-profile circularly polarized (CP) metasurface (MTS) antennas is often limited in the upper band margin due to gain degradation and distorted patterns resulting from insufficient number of functional modes. In this letter, a ten-mode low-profile aperture-fed wideband CP MTS antenna is proposed. Different from conventional triple-mode designs using the first-order slot mode and the TM10/01 MTS modes, seven additional higher order modes are incorporated for improved gain and pattern symmetry in the upper band margin for bandwidth enhancement. The seven new modes include the third-order slot mode, four TM12/21/30/03 MTS modes, and two newly found TM1.5,1 and even TM12 MTS modes, all of broadside radiation. The intermode phase difference for CP radiation is achieved by mode manipulation with four loadings combined, including surface capacitive loading, corner truncation, diagonal via loading, and Z-slot loading. With an overall size of 0.86λL × 0.86λL × 0.057λL at the lowest frequency, the proposed ten-mode MTS antenna achieves a measured bandwidth of 40.5% (4.68 GHz to 7.06 GHz), with an axial ratio < 3 dB, |S11| < −10 dB, a gain of 6.9 dBic to 8.5 dBic, symmetric patterns, and a significantly lower upper band gain drop < 0.5 dB.
{"title":"Ten-Mode Single-Fed Low-Profile Wideband Circularly Polarized Metasurface Antenna Using Dual-Mode Aperture-Coupled Higher Order Modes","authors":"Jia Fan Gao;Yi Hui Zhu;Feng Han Lin","doi":"10.1109/LAWP.2025.3642170","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3642170","url":null,"abstract":"The bandwidth of low-profile circularly polarized (CP) metasurface (MTS) antennas is often limited in the upper band margin due to gain degradation and distorted patterns resulting from insufficient number of functional modes. In this letter, a ten-mode low-profile aperture-fed wideband CP MTS antenna is proposed. Different from conventional triple-mode designs using the first-order slot mode and the TM<sub>10/01</sub> MTS modes, seven additional higher order modes are incorporated for improved gain and pattern symmetry in the upper band margin for bandwidth enhancement. The seven new modes include the third-order slot mode, four TM<sub>12/21/30/03</sub> MTS modes, and two newly found TM<sub>1.5,1</sub> and even TM<sub>12</sub> MTS modes, all of broadside radiation. The intermode phase difference for CP radiation is achieved by mode manipulation with four loadings combined, including surface capacitive loading, corner truncation, diagonal via loading, and <italic>Z</i>-slot loading. With an overall size of 0.86λ<italic><sub>L</sub></i> × 0.86λ<italic><sub>L</sub></i> × 0.057λ<italic><sub>L</sub></i> at the lowest frequency, the proposed ten-mode MTS antenna achieves a measured bandwidth of 40.5% (4.68 GHz to 7.06 GHz), with an axial ratio < 3 dB, |<italic>S</i><sub>11</sub>| < −10 dB, a gain of 6.9 dBic to 8.5 dBic, symmetric patterns, and a significantly lower upper band gain drop < 0.5 dB.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"881-885"},"PeriodicalIF":4.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116862","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}
Traditional beamforming methods usually cause significant losses to the signal of interest (SoI) when dealing with the mainlobe interference. Due to the neglect of the target scattering characteristics, the SoI loss cannot be accurately evaluated, thus unable to effectively guide the optimal design of the anti-jamming array. This letter proposes an anti-jamming array optimization method based on the radiation–scattering comodel. It statistically analyzes the probability distribution of the signal-to-interference-plus-noise ratio (SINR) under the target scattering and interference radiation, deduces the relationship between the cancellation spatial spectrum and array distribution, and establishes a distributed heterogeneous main-auxiliary array optimization model for the mainlobe interference cancellation. Experimental verification shows that the spatial resolution of the mainlobe interference cancellation. has improved from 2.2° to 0.1°, the SoI loss is ≤3 dB, the SINR increase is ≥27 dB. The proposed method effectively suppresses the mainlobe interference with high spatial resolution and low SoI loss.
{"title":"Radiation–Scattering Comodel-Driven Methodology for Anti-Jamming Antenna Array Design","authors":"Rongsen Xiao;Jiahao Zhang;Hongzhang Gao;Jundi Wang;Hengfeng Wang;Jin Meng","doi":"10.1109/LAWP.2025.3641898","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3641898","url":null,"abstract":"Traditional beamforming methods usually cause significant losses to the signal of interest (SoI) when dealing with the mainlobe interference. Due to the neglect of the target scattering characteristics, the SoI loss cannot be accurately evaluated, thus unable to effectively guide the optimal design of the anti-jamming array. This letter proposes an anti-jamming array optimization method based on the radiation–scattering comodel. It statistically analyzes the probability distribution of the signal-to-interference-plus-noise ratio (SINR) under the target scattering and interference radiation, deduces the relationship between the cancellation spatial spectrum and array distribution, and establishes a distributed heterogeneous main-auxiliary array optimization model for the mainlobe interference cancellation. Experimental verification shows that the spatial resolution of the mainlobe interference cancellation. has improved from 2.2° to 0.1°, the SoI loss is ≤3 dB, the SINR increase is ≥27 dB. The proposed method effectively suppresses the mainlobe interference with high spatial resolution and low SoI loss.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"861-865"},"PeriodicalIF":4.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116833","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 wideband and gain-enhanced hybrid dielectric resonator antenna (DRA) which comprises a trapezoidal dielectric resonator (tDR), a multimode magnetic dipole (MD), and a metal cavity. In the lower band, the multimode MD operates as a three-element MD array, achieving a peak gain of over 8 dBi and a bandwidth of over 15%. In the upper band, the multimode MD strategically excites the fundamental TEδ11 mode in the tDR. Hence, the TEδ11 mode, being equivalent to an MD, combines with the bottom MD element and the image MD to form a new three-element array. The metal cavity is employed to improve the merger between the two operating bands. As a result, the proposed hybrid DRA is continuously modeled as a three-element MD array, thereby realizing a wide bandwidth and enhanced gain. Finally, the hybrid DRA prototype is fabricated and measured for verification. The measured 10 dB impedance bandwidth is 70.6% (2.2 GHz to 4.6 GHz) with peak realized gain between 7.5−10.8 dBi. The hybrid radiator is compact with a total size of 0.50λ0 × 0.09λ0 × 0.28λ0, referred to the free-space wavelength at 3.35 GHz.
{"title":"Wideband and Gain-Enhanced Hybrid Dielectric Resonator Antenna Utilizing Multimode Magnetic Dipole as Excitation Element","authors":"Ting Shi;Yu Xia;Junbing Duan;Peng-Jin Zuo;Xuan-Ming Zhong;You-Feng Cheng","doi":"10.1109/LAWP.2025.3642145","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3642145","url":null,"abstract":"This letter proposes a wideband and gain-enhanced hybrid dielectric resonator antenna (DRA) which comprises a trapezoidal dielectric resonator (tDR), a multimode magnetic dipole (MD), and a metal cavity. In the lower band, the multimode MD operates as a three-element MD array, achieving a peak gain of over 8 dBi and a bandwidth of over 15%. In the upper band, the multimode MD strategically excites the fundamental TE<sub>δ11</sub> mode in the tDR. Hence, the TE<sub>δ11</sub> mode, being equivalent to an MD, combines with the bottom MD element and the image MD to form a new three-element array. The metal cavity is employed to improve the merger between the two operating bands. As a result, the proposed hybrid DRA is continuously modeled as a three-element MD array, thereby realizing a wide bandwidth and enhanced gain. Finally, the hybrid DRA prototype is fabricated and measured for verification. The measured 10 dB impedance bandwidth is 70.6% (2.2 GHz to 4.6 GHz) with peak realized gain between 7.5−10.8 dBi. The hybrid radiator is compact with a total size of 0.50λ<sub>0</sub> × 0.09λ<sub>0</sub> × 0.28λ<sub>0</sub>, referred to the free-space wavelength at 3.35 GHz.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"876-880"},"PeriodicalIF":4.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116847","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 : 2025-12-09DOI: 10.1109/LAWP.2025.3642251
Zhongwei Hou;En Li;Pinhong Xie;Chong Gao
This letter proposes a miniaturized ultrawideband double-ridged horn antenna with the dielectric-guided lens. Unlike conventional double-ridged horns, the proposed design employs a bidirectional-gradient ridge to achieve smooth impedance transformation along the horn. Moreover, a dielectric guiding structure with an exponential profile is embedded within the antenna aperture to guide electromagnetic (EM) waves and improve low-frequency voltage standing-wave ratio (VSWR), while a hyperbolic lens at the horn aperture enhances high-frequency gain and suppresses beam splitting. Measurements and simulations indicate that the antenna achieves a VSWR below 2.2 across 2 GHz to 44 GHz, with a peak gain of 18.5 dBi at 36 GHz. The optimized antenna measures 48 mm × 50 mm × 100 mm. Compared with conventional designs, the proposed antenna is more compact and suited to space-constrained ultrawideband applications.
{"title":"A Miniaturized Ultrawideband Horn Antenna With Dielectric-Guided Lens","authors":"Zhongwei Hou;En Li;Pinhong Xie;Chong Gao","doi":"10.1109/LAWP.2025.3642251","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3642251","url":null,"abstract":"This letter proposes a miniaturized ultrawideband double-ridged horn antenna with the dielectric-guided lens. Unlike conventional double-ridged horns, the proposed design employs a bidirectional-gradient ridge to achieve smooth impedance transformation along the horn. Moreover, a dielectric guiding structure with an exponential profile is embedded within the antenna aperture to guide electromagnetic (EM) waves and improve low-frequency voltage standing-wave ratio (VSWR), while a hyperbolic lens at the horn aperture enhances high-frequency gain and suppresses beam splitting. Measurements and simulations indicate that the antenna achieves a VSWR below 2.2 across 2 GHz to 44 GHz, with a peak gain of 18.5 dBi at 36 GHz. The optimized antenna measures 48 mm × 50 mm × 100 mm. Compared with conventional designs, the proposed antenna is more compact and suited to space-constrained ultrawideband applications.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"886-890"},"PeriodicalIF":4.8,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116901","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 : 2025-12-08DOI: 10.1109/LAWP.2025.3641509
Muhammad Ishfaq;Weiqiang Tang;Abdul Aziz;Abdul Mueed;Rui Ma
Broadband, high-purity orbital angular momentum (OAM) vortex beams offer strong potential for mmWave wireless communication systems; however, achieving such performance remains challenging due to dispersion and the structural complexity of current designs. This letter presents a symmetrical unit cell with three identical conductor layers embedded within three substrate layers. With precise interlayer spacing of 0.15$lambda _{0}$ and 0.1$lambda _{0}$, the total thickness is limited to 0.35$lambda _{0}$ (3.5 mm) at 30 GHz, forming a uniform structure well-suited for dual-polarized applications. We design and analyze a square aperture transmitarray for modes($l$) 1, 2, 3, and 4, fed by a horn antenna, achieving high-purity performance across these modes at the operating frequency. Simulation results confirm that the $l = +1$ mode produces a stable, broadband, and high-purity vortex beam. To validate the concept, a prototype transmitarray is fabricated and experimentally measured. Both simulated and measured results verify the generation of OAM beams with $l = +1$ over a wide bandwidth of 26 GHz to 41 GHz, corresponding to a 50% relative bandwidth. The mode purity exceeds 87% throughout this range. Moreover, the presented prototype design demonstrates a measured gain 23.7 dBi and 18.6% aperture efficiency at 30 GHz. The symmetrical and identical structure of the proposed transmitarray makes it a promising candidate for high-capacity wireless communication systems.
{"title":"Broadband Generation of High-Purity Vortex Beam Using a Dual-Polarized Transmissive Metasurface for mmWave Wireless Systems","authors":"Muhammad Ishfaq;Weiqiang Tang;Abdul Aziz;Abdul Mueed;Rui Ma","doi":"10.1109/LAWP.2025.3641509","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3641509","url":null,"abstract":"Broadband, high-purity orbital angular momentum (OAM) vortex beams offer strong potential for mmWave wireless communication systems; however, achieving such performance remains challenging due to dispersion and the structural complexity of current designs. This letter presents a symmetrical unit cell with three identical conductor layers embedded within three substrate layers. With precise interlayer spacing of 0.15<inline-formula><tex-math>$lambda _{0}$</tex-math></inline-formula> and 0.1<inline-formula><tex-math>$lambda _{0}$</tex-math></inline-formula>, the total thickness is limited to 0.35<inline-formula><tex-math>$lambda _{0}$</tex-math></inline-formula> (3.5 mm) at 30 GHz, forming a uniform structure well-suited for dual-polarized applications. We design and analyze a square aperture transmitarray for modes(<inline-formula><tex-math>$l$</tex-math></inline-formula>) 1, 2, 3, and 4, fed by a horn antenna, achieving high-purity performance across these modes at the operating frequency. Simulation results confirm that the <inline-formula><tex-math>$l = +1$</tex-math></inline-formula> mode produces a stable, broadband, and high-purity vortex beam. To validate the concept, a prototype transmitarray is fabricated and experimentally measured. Both simulated and measured results verify the generation of OAM beams with <inline-formula><tex-math>$l = +1$</tex-math></inline-formula> over a wide bandwidth of 26 GHz to 41 GHz, corresponding to a 50% relative bandwidth. The mode purity exceeds 87% throughout this range. Moreover, the presented prototype design demonstrates a measured gain 23.7 dBi and 18.6% aperture efficiency at 30 GHz. The symmetrical and identical structure of the proposed transmitarray makes it a promising candidate for high-capacity wireless communication systems.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"851-855"},"PeriodicalIF":4.8,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116784","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 presents a novel dual-focusing phase synthesis method aimed at achieving high-gain beam control using caustic Bessel-like beams. Compared to conventional geometric optics methods, the proposed approach achieves average directivity improvements of 1.91 dB, 4.83 dB, and 6.55 dB at steering angles of 10°, 20°, and 30°, respectively, demonstrating progressively enhanced performance advantages at larger steering angles. The method maintains sidelobe levels below −15.67 dB with beam pointing errors less than 2°. The directivity exhibits exceptional stability with only 1.54 dB degradation from 10° to 30° steering angles, showcasing superior gain retention across wide-angle beam steering operations. Experimental validation shows good agreement with simulation results, confirming the methodology's effectiveness. The propose method provides new insights into phase design for beam control and expands the application scope of Bessel-like beams in far-field radiation control.
{"title":"Dual-Focusing Phase Synthesis Method for High-Gain Beam Steering via Caustic Bessel-Like Beams","authors":"Tongxing Huang;Ran Zhang;Shuai Huang;Zhijin Wen;Wei Jiang;Jianxun Wang;Yong Luo;Zewei Wu","doi":"10.1109/LAWP.2025.3641618","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3641618","url":null,"abstract":"This letter presents a novel dual-focusing phase synthesis method aimed at achieving high-gain beam control using caustic Bessel-like beams. Compared to conventional geometric optics methods, the proposed approach achieves average directivity improvements of 1.91 dB, 4.83 dB, and 6.55 dB at steering angles of 10°, 20°, and 30°, respectively, demonstrating progressively enhanced performance advantages at larger steering angles. The method maintains sidelobe levels below −15.67 dB with beam pointing errors less than 2°. The directivity exhibits exceptional stability with only 1.54 dB degradation from 10° to 30° steering angles, showcasing superior gain retention across wide-angle beam steering operations. Experimental validation shows good agreement with simulation results, confirming the methodology's effectiveness. The propose method provides new insights into phase design for beam control and expands the application scope of Bessel-like beams in far-field radiation control.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"856-860"},"PeriodicalIF":4.8,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116817","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 : 2025-12-08DOI: 10.1109/LAWP.2025.3641246
Ke Li;Zhengqi Qu;Zhuang Li;Yuan-Ming Cai;Fuwei Wang;Yuhui Ren
This letter presents a broadband, polarization-insensitive transmitarray based on a multiresonance four-arm spiral unit cell. The proposed unit employs four-arm spiral structures in both the receiving and transmitting layers, interconnected by four metallic vias. The unit cell can receive incident waves with arbitrary polarization while maintaining the same polarization in the transmitted waves. The design achieves a wide operating band from 9 GHz to 19 GHz with transmission coefficient better than −2 dB, while maintain a low profile of only 0.23λ0 (where λ0 is the free-space wavelength at 14 GHz). A 16 × 16 transmitarray prototype based on the proposed unit was designed, fabricated, and measured. Experimental results show a peak gain of 24.89 dBi, a fractional 3 dB gain bandwidth of 45.16%, and aperture efficiencies up to 44.1%. The proposed design combines the advantages of wide bandwidth, low-profile, and polarization insensitivity, showing significant potential for applications in wireless communication systems.
{"title":"Design of a Broadband Polarization-Insensitive Transmitarray","authors":"Ke Li;Zhengqi Qu;Zhuang Li;Yuan-Ming Cai;Fuwei Wang;Yuhui Ren","doi":"10.1109/LAWP.2025.3641246","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3641246","url":null,"abstract":"This letter presents a broadband, polarization-insensitive transmitarray based on a multiresonance four-arm spiral unit cell. The proposed unit employs four-arm spiral structures in both the receiving and transmitting layers, interconnected by four metallic vias. The unit cell can receive incident waves with arbitrary polarization while maintaining the same polarization in the transmitted waves. The design achieves a wide operating band from 9 GHz to 19 GHz with transmission coefficient better than −2 dB, while maintain a low profile of only 0.23λ<sub>0</sub> (where λ<sub>0</sub> is the free-space wavelength at 14 GHz). A 16 × 16 transmitarray prototype based on the proposed unit was designed, fabricated, and measured. Experimental results show a peak gain of 24.89 dBi, a fractional 3 dB gain bandwidth of 45.16%, and aperture efficiencies up to 44.1%. The proposed design combines the advantages of wide bandwidth, low-profile, and polarization insensitivity, showing significant potential for applications in wireless communication systems.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"25 2","pages":"846-850"},"PeriodicalIF":4.8,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116818","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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