Pub Date : 2024-12-04DOI: 10.1109/LAWP.2024.3482788
Lehu Wen;Wei Hu;Benito Sanz-Izquierdo;Ping Jack Soh;Chunxu Mao
With the advancement of modern wireless systems from the current 5G to future 6G communications, the electromagnetic environment is getting increasingly complicated. Filtering antennas, also known as filtennas, are increasingly popular in wireless communication systems [1], [2], [3]. This is owing to the urgent need for the increased integration of compact and multiband antenna elements with good radiation performance, while maintaining the excellent suppression over the undesired out-of-band interferences. Such filtering antennas have been found in their applications in various 2G/3G/4G/5G base stations, satellites, navigations, radars [4], [5], [6], [7], etc.
{"title":"Guest Editorial: Special Cluster on Recent Advances in Filtering Antennas and Arrays","authors":"Lehu Wen;Wei Hu;Benito Sanz-Izquierdo;Ping Jack Soh;Chunxu Mao","doi":"10.1109/LAWP.2024.3482788","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3482788","url":null,"abstract":"With the advancement of modern wireless systems from the current 5G to future 6G communications, the electromagnetic environment is getting increasingly complicated. Filtering antennas, also known as filtennas, are increasingly popular in wireless communication systems [1], [2], [3]. This is owing to the urgent need for the increased integration of compact and multiband antenna elements with good radiation performance, while maintaining the excellent suppression over the undesired out-of-band interferences. Such filtering antennas have been found in their applications in various 2G/3G/4G/5G base stations, satellites, navigations, radars [4], [5], [6], [7], etc.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"23 11","pages":"3862-3866"},"PeriodicalIF":3.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10778145","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wireless power transfer (WPT) is a key technology for the next generation of wireless technology, e.g., 6G and beyond. By utilizing energy harvesting (EH) techniques, WPT enables a seamless and efficient power supply [1], [2], [3], [4], [5]. Highly efficient and reliable WPT systems are crucial for enabling the deployment of wireless charging solutions for a wide range of low-power applications, such as sensors for health care or ambient monitoring in smart cities. In any scenario involving WPT, antennas play a critical role as they are responsible for efficiently transmitting and receiving electromagnetic waves carrying a specific amount of power. Advancements in antenna design and optimization directly impact the overall efficiency and performance of WPT systems.
{"title":"Guest Editorial: Special Cluster on Antennas and Metasurfaces for Advanced Wireless Power Transfer","authors":"Martino Aldrigo;Qi Luo;Diego Masotti;Filippo Costa;Yonggang Zhou","doi":"10.1109/LAWP.2024.3477668","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3477668","url":null,"abstract":"Wireless power transfer (WPT) is a key technology for the next generation of wireless technology, e.g., 6G and beyond. By utilizing energy harvesting (EH) techniques, WPT enables a seamless and efficient power supply [1], [2], [3], [4], [5]. Highly efficient and reliable WPT systems are crucial for enabling the deployment of wireless charging solutions for a wide range of low-power applications, such as sensors for health care or ambient monitoring in smart cities. In any scenario involving WPT, antennas play a critical role as they are responsible for efficiently transmitting and receiving electromagnetic waves carrying a specific amount of power. Advancements in antenna design and optimization directly impact the overall efficiency and performance of WPT systems.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"23 11","pages":"3779-3781"},"PeriodicalIF":3.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10778127","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-28DOI: 10.1109/LAWP.2024.3506616
Huajie Cai;Changrong Liu
A compact circularly polarized (CP) loop antenna is designed and experimentally validated for the 2.4 GHz Industrial, Scientific, and Medical (ISM) band [(2.4 to 2.48) GHz]. The design introduces vias to extend the current path, which meanwhile introduces capacitive coupling of the bending part to the ground, producing good results in reducing the antenna size. Additionally, four corner-mounted square patches, connected to the ground, serve to capacitively and inductively load the antenna, further effectively downsizing its footprint. Compared to previous work, the antenna's metallic components are concentrated at the periphery, making it possible to embed implantable device components inside the antenna, which favors equipment miniaturization. The influence of embedded circuits on antenna performance is studied through simulation. The size of the antenna is 9 mm $ times $ 9 mm $ times $ 0.762 mm, and it achieves simulated impedance bandwidth (IBW) (|S11| < −10 dB) coverage of 2.35 GHz to 2.53 GHz and axial ratio bandwidth (ARBW) (AR < 3 dB) coverage of 2.44 GHz to 2.48 GHz. The antenna is measured in the minced pork, and the result is consistent with the simulated one.
针对 2.4 GHz 工业、科学和医疗（ISM）频段[(2.4 至 2.48) GHz]设计了一种紧凑型圆极化（CP）环形天线，并进行了实验验证。该设计引入了通孔来扩展电流路径，同时将弯曲部分与地面进行电容耦合，从而在减小天线尺寸方面取得了良好的效果。此外，四个角上安装的方形贴片与地面相连，可对天线进行电容和电感加载，从而进一步有效缩小了天线的占地面积。与之前的研究相比，该天线的金属元件集中在外围，从而有可能在天线内部嵌入植入式设备元件，这有利于设备的小型化。我们通过仿真研究了嵌入式电路对天线性能的影响。天线的尺寸为 9 mm $ times $ 9 mm $ times $ 0.762 mm，模拟阻抗带宽（IBW）（|S11| < -10 dB）覆盖范围为 2.35 GHz 至 2.53 GHz，轴比带宽（ARBW）（AR < 3 dB）覆盖范围为 2.44 GHz 至 2.48 GHz。天线是在碎猪肉中测量的，结果与模拟结果一致。
{"title":"Circularly Polarized Loop Antenna for 2.4 GHz ISM-Band Biotelemetry Devices","authors":"Huajie Cai;Changrong Liu","doi":"10.1109/LAWP.2024.3506616","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3506616","url":null,"abstract":"A compact circularly polarized (CP) loop antenna is designed and experimentally validated for the 2.4 GHz Industrial, Scientific, and Medical (ISM) band [(2.4 to 2.48) GHz]. The design introduces vias to extend the current path, which meanwhile introduces capacitive coupling of the bending part to the ground, producing good results in reducing the antenna size. Additionally, four corner-mounted square patches, connected to the ground, serve to capacitively and inductively load the antenna, further effectively downsizing its footprint. Compared to previous work, the antenna's metallic components are concentrated at the periphery, making it possible to embed implantable device components inside the antenna, which favors equipment miniaturization. The influence of embedded circuits on antenna performance is studied through simulation. The size of the antenna is 9 mm <inline-formula><tex-math>$ times $</tex-math></inline-formula> 9 mm <inline-formula><tex-math>$ times $</tex-math></inline-formula> 0.762 mm, and it achieves simulated impedance bandwidth (IBW) (|<italic>S</i><sub>11</sub>| < −10 dB) coverage of 2.35 GHz to 2.53 GHz and axial ratio bandwidth (ARBW) (AR < 3 dB) coverage of 2.44 GHz to 2.48 GHz. The antenna is measured in the minced pork, and the result is consistent with the simulated one.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 2","pages":"509-513"},"PeriodicalIF":3.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361399","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 : 2024-11-27DOI: 10.1109/LAWP.2024.3506573
Wei Dong Gu;Yao Zhang
In this letter, a broadband dual linearly polarized (LP) and a circularly polarized (CP) filtering antenna are proposed. These two antennas are designed based on the same approach by incorporating the coupled meander-line and split-ring line into the crossed-dipole antenna. By coupling a pair of meander-lines to the cross-dipole arms, specific controllable radiation nulls are generated. To ensure a high frequency selectivity level, a split-ring line is then coupled to the L-shaped balun feeding structure. This design method is first applied in a dual LP antenna, which realizes an impedance bandwidth of about 46.3% [(1.69 to 2.71) GHz], an average realized gain of about 7.5 dBi and a more than 30 dB suppression level. Then, this method is deployed to design a CP dipole antenna that achieves an overlapping bandwidth (impedance and axial ratio bandwidth) of about 44.2% [(1.5 to 2.35) GHz], an average realized gain of about 7.4 dBic and a more than 18 dB suppression level. These coupled lines are inserted into the antenna structure without increasing the antenna overall size and height. This work presents a general method for base-station antenna designers to develop filtering dipole antennas, which could be useful for Antenna and Propagation Society.
{"title":"A Type of Dual/Circularly Polarized Filtering Dipole Antenna Design Based on Coupled Lines","authors":"Wei Dong Gu;Yao Zhang","doi":"10.1109/LAWP.2024.3506573","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3506573","url":null,"abstract":"In this letter, a broadband dual linearly polarized (LP) and a circularly polarized (CP) filtering antenna are proposed. These two antennas are designed based on the same approach by incorporating the coupled meander-line and split-ring line into the crossed-dipole antenna. By coupling a pair of meander-lines to the cross-dipole arms, specific controllable radiation nulls are generated. To ensure a high frequency selectivity level, a split-ring line is then coupled to the L-shaped balun feeding structure. This design method is first applied in a dual LP antenna, which realizes an impedance bandwidth of about 46.3% [(1.69 to 2.71) GHz], an average realized gain of about 7.5 dBi and a more than 30 dB suppression level. Then, this method is deployed to design a CP dipole antenna that achieves an overlapping bandwidth (impedance and axial ratio bandwidth) of about 44.2% [(1.5 to 2.35) GHz], an average realized gain of about 7.4 dBic and a more than 18 dB suppression level. These coupled lines are inserted into the antenna structure without increasing the antenna overall size and height. This work presents a general method for base-station antenna designers to develop filtering dipole antennas, which could be useful for Antenna and Propagation Society.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 2","pages":"489-493"},"PeriodicalIF":3.7,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361147","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 : 2024-11-27DOI: 10.1109/LAWP.2024.3506581
Ze Yu;Chang Chen;Weidong Chen;Xiang Zhang;Xiaolin Zhang
The antenna array loaded with complex-amplitude metasurface (MS) is reported to realize a cosecant squared beam. A novel MS unit-cell is proposed to independently manipulate the amplitude and phase of the transmissive linearly polarized electromagnetic wave simultaneously. The unit-cell consists of two metallic patterned layers printed on both sides of a substrate, and it has a profile height of only 2 mm (about 0.07λ). Further, it can achieve amplitude modulation from 0.2 to 1.0 with almost constant phase by rotating the metallic patterns, and phase modulation covers 360° by adjusting the radius of the patterns. In addition, a novel method for forming the cosecant squared beam based on the MS has been proposed. The transmissive amplitude and phase distributions of the MS are calculated to match the designed goals obtained by the genetic algorithm (GA), and a cosecant squared beam can be generated by loading the proposed MS on the antenna array. The proposed method is numerically and experimentally verified by a 10-unit line array loaded with the proposed MS, and the maximum gain of the antenna at 10.5 GHz is 11.9 dBi (about 16.4% aperture efficiency). The antenna can also achieve sidelobe level (SLL) lower −14.5 dB at 10.5 GHz with cross polarization below −7.2 dB. The cosecant squared patterns can be efficiently generated over a wide bandwidth from 10.1 GHz to 10.8 GHz (about 6.7%).
{"title":"Cosecant Squared Beamforming by Metasurface With Complex-Amplitude Controls for Antenna Array","authors":"Ze Yu;Chang Chen;Weidong Chen;Xiang Zhang;Xiaolin Zhang","doi":"10.1109/LAWP.2024.3506581","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3506581","url":null,"abstract":"The antenna array loaded with complex-amplitude metasurface (MS) is reported to realize a cosecant squared beam. A novel MS unit-cell is proposed to independently manipulate the amplitude and phase of the transmissive linearly polarized electromagnetic wave simultaneously. The unit-cell consists of two metallic patterned layers printed on both sides of a substrate, and it has a profile height of only 2 mm (about 0.07λ). Further, it can achieve amplitude modulation from 0.2 to 1.0 with almost constant phase by rotating the metallic patterns, and phase modulation covers 360° by adjusting the radius of the patterns. In addition, a novel method for forming the cosecant squared beam based on the MS has been proposed. The transmissive amplitude and phase distributions of the MS are calculated to match the designed goals obtained by the genetic algorithm (GA), and a cosecant squared beam can be generated by loading the proposed MS on the antenna array. The proposed method is numerically and experimentally verified by a 10-unit line array loaded with the proposed MS, and the maximum gain of the antenna at 10.5 GHz is 11.9 dBi (about 16.4% aperture efficiency). The antenna can also achieve sidelobe level (SLL) lower −14.5 dB at 10.5 GHz with cross polarization below −7.2 dB. The cosecant squared patterns can be efficiently generated over a wide bandwidth from 10.1 GHz to 10.8 GHz (about 6.7%).","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 2","pages":"494-498"},"PeriodicalIF":3.7,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361185","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 fourth-order high-selectivity and wide stopband suppression filtering antenna with a symmetric coupling structure is presented. By incorporating resonant units with different structures, harmonics are effectively suppressed due to the resonators’ identical fundamental modes and distinct second-order harmonics. By introducing a cross-coupling path, two controllable radiation nulls are achieved, further enhancing the antenna's selectivity. Additionally, the symmetric coupling structure is employed to minimize cross-polarization. Finally, the theory of coupling matrix is utilized in the synthesis of the filtering antenna, and the relevant physical parameters are obtained. The results demonstrate that the proposed filtering antenna exhibits a bandwidth of 2.40 GHz to 2.66 GHz for |S11| < −10 dB, a peak gain of 6.1 dBi, and two radiation nulls at 1.98 GHz and 3.12 GHz, resulting in enhanced selectivity with suppression levels exceeding 37.5 dB and cross-polarization levels below −38.1 dB.
{"title":"Design and Synthesis of a High-Selectivity and Wide Stopband Suppression Filtering Antenna With Symmetric Coupling Structure","authors":"Xinwei Chen;Li Zhao;Runbo Ma;Jinrong Su;Wenmei Zhang","doi":"10.1109/LAWP.2024.3506626","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3506626","url":null,"abstract":"A fourth-order high-selectivity and wide stopband suppression filtering antenna with a symmetric coupling structure is presented. By incorporating resonant units with different structures, harmonics are effectively suppressed due to the resonators’ identical fundamental modes and distinct second-order harmonics. By introducing a cross-coupling path, two controllable radiation nulls are achieved, further enhancing the antenna's selectivity. Additionally, the symmetric coupling structure is employed to minimize cross-polarization. Finally, the theory of coupling matrix is utilized in the synthesis of the filtering antenna, and the relevant physical parameters are obtained. The results demonstrate that the proposed filtering antenna exhibits a bandwidth of 2.40 GHz to 2.66 GHz for |<italic>S</i><sub>11</sub>| < −10 dB, a peak gain of 6.1 dBi, and two radiation nulls at 1.98 GHz and 3.12 GHz, resulting in enhanced selectivity with suppression levels exceeding 37.5 dB and cross-polarization levels below −38.1 dB.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 2","pages":"514-518"},"PeriodicalIF":3.7,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361395","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 : 2024-11-27DOI: 10.1109/LAWP.2024.3506590
Jinbo Ruan;Junsheng Yu;Tianyang Chen;Yuan Yao
In this letter, we concentrate on computational electromagnetic modeling for a wideband three-reflector compact antenna test range (CATR) system and evaluate the subsequent quiet zone (QZ) field electromagnetic characteristics. The fast design of the feedhorn is accomplished by integrating a coarse model, employing the mode matching method and Stratton–Chu formula, with a high-fidelity model based on full-wave simulations. The reflectors are synthesized by integrating ray tracing and B-spline surface construction. The designed feed horn, in conjunction with two shaped sub-reflectors, forms a dual reflector feed system to complete the illumination of the main reflector. The QZ field for the three-reflector CATR is calculated using physical optics and the physical theory of diffraction in GRASP10. Utilizing Lorentz reciprocity theorem and plane wave spectrum, numerical calculations of far-field pattern measurement predictions are provided for three-reflector CATR and antenna-under-test combinations. The useful bandwidth of the three-reflector CATR is 480 GHz to 600 GHz, with a QZ diameter of approximately 1 m to 2 m. The copolar amplitude and phase ripple meet the quality criteria, and cross-polarization isolation exceeds 50 dB.
{"title":"Design and Evaluation of Wideband Three-Reflector Compact Antenna Test Range System Based on Integrated Computational Electromagnetic Model","authors":"Jinbo Ruan;Junsheng Yu;Tianyang Chen;Yuan Yao","doi":"10.1109/LAWP.2024.3506590","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3506590","url":null,"abstract":"In this letter, we concentrate on computational electromagnetic modeling for a wideband three-reflector compact antenna test range (CATR) system and evaluate the subsequent quiet zone (QZ) field electromagnetic characteristics. The fast design of the feedhorn is accomplished by integrating a coarse model, employing the mode matching method and Stratton–Chu formula, with a high-fidelity model based on full-wave simulations. The reflectors are synthesized by integrating ray tracing and B-spline surface construction. The designed feed horn, in conjunction with two shaped sub-reflectors, forms a dual reflector feed system to complete the illumination of the main reflector. The QZ field for the three-reflector CATR is calculated using physical optics and the physical theory of diffraction in GRASP10. Utilizing Lorentz reciprocity theorem and plane wave spectrum, numerical calculations of far-field pattern measurement predictions are provided for three-reflector CATR and antenna-under-test combinations. The useful bandwidth of the three-reflector CATR is 480 GHz to 600 GHz, with a QZ diameter of approximately 1 m to 2 m. The copolar amplitude and phase ripple meet the quality criteria, and cross-polarization isolation exceeds 50 dB.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 2","pages":"499-503"},"PeriodicalIF":3.7,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361398","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 : 2024-11-26DOI: 10.1109/LAWP.2024.3506594
Yu-Chen Hsu;Tzyh-Ghuang Ma
A W-band double-layered dual-linearly polarized transmitarray (DLPTA) is proposed for the first time by utilizing hybrid vialess unit cells (UCs) of three kinds for maximizing the phase coverage. At W band, the main challenge in designing transmitarrays relies on finding proper UCs without using multilayered structure or coupling vias. To conquer the restriction, three complementary UCs, the square ring-slot UC, the crossed-slot UC, and the meandered-strip UC, are developed each responsible for a specific range of transmitting phase with stable frequency response. By integrating the UCs, a DLPTA at 79 GHz is reported, which shows a peak gain of 29 dBi, an aperture efficiency of 37%, and a broad 3 dB bandwidth of 14%. The design methodology is discussed along with a comparison table to manifest the uniqueness of the design.
{"title":"W-Band Double-Layered Dual-Linearly Polarized Vialess Transmitarray Without Using Air Gap","authors":"Yu-Chen Hsu;Tzyh-Ghuang Ma","doi":"10.1109/LAWP.2024.3506594","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3506594","url":null,"abstract":"A W-band double-layered dual-linearly polarized transmitarray (DLPTA) is proposed for the first time by utilizing hybrid vialess unit cells (UCs) of three kinds for maximizing the phase coverage. At W band, the main challenge in designing transmitarrays relies on finding proper UCs without using multilayered structure or coupling vias. To conquer the restriction, three complementary UCs, the square ring-slot UC, the crossed-slot UC, and the meandered-strip UC, are developed each responsible for a specific range of transmitting phase with stable frequency response. By integrating the UCs, a DLPTA at 79 GHz is reported, which shows a peak gain of 29 dBi, an aperture efficiency of 37%, and a broad 3 dB bandwidth of 14%. The design methodology is discussed along with a comparison table to manifest the uniqueness of the design.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 2","pages":"504-508"},"PeriodicalIF":3.7,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361351","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 : 2024-11-25DOI: 10.1109/LAWP.2024.3506712
Rahman Askarzadeh;Ali Farahbakhsh;Davood Zarifi;Ashraf Uz Zaman
A single-layer, full metal, wideband, and high-efficiency slot array antenna operating in V band [(50 to 75) GHz] is proposed using a single corporate-feeding network based on gap waveguide (GW) technology. Compared with conventional multilayered slot array antenna, the proposed antenna utilizes only one waveguide feeding layer to excite the radiation slots; therefore, the assembly complexity of multilayer waveguide and manufacturing cost is greatly decreased. The proposed 16 × 16 slot array antenna consists of four 64-element smaller array antennas in which all radiation slots are fed by an E-plane groove gap waveguide (EGGW). Power division in each of the 8 × 8 element array antenna is realized by a wideband combined ridge and EGGW power divider. Two wideband E-plane groove gap waveguide T-junctions have been used to connect all four 64-element subarray antennas with proper phase and equal amplitude together to obtain higher gain. The final 16 × 16 slot array antenna has a peak gain of 32 dBi gain and about 36% impedance bandwidth at V band. Also, the full metal antenna array has an average efficiency of 80% over the entire bandwidth of 50 GHz to 72 GHz.
{"title":"Wideband High-Efficiency Slot Array Antenna Based on Gap Waveguide Single-Layer Feeding Network","authors":"Rahman Askarzadeh;Ali Farahbakhsh;Davood Zarifi;Ashraf Uz Zaman","doi":"10.1109/LAWP.2024.3506712","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3506712","url":null,"abstract":"A single-layer, full metal, wideband, and high-efficiency slot array antenna operating in V band [(50 to 75) GHz] is proposed using a single corporate-feeding network based on gap waveguide (GW) technology. Compared with conventional multilayered slot array antenna, the proposed antenna utilizes only one waveguide feeding layer to excite the radiation slots; therefore, the assembly complexity of multilayer waveguide and manufacturing cost is greatly decreased. The proposed 16 × 16 slot array antenna consists of four 64-element smaller array antennas in which all radiation slots are fed by an E-plane groove gap waveguide (EGGW). Power division in each of the 8 × 8 element array antenna is realized by a wideband combined ridge and EGGW power divider. Two wideband E-plane groove gap waveguide T-junctions have been used to connect all four 64-element subarray antennas with proper phase and equal amplitude together to obtain higher gain. The final 16 × 16 slot array antenna has a peak gain of 32 dBi gain and about 36% impedance bandwidth at V band. Also, the full metal antenna array has an average efficiency of 80% over the entire bandwidth of 50 GHz to 72 GHz.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 2","pages":"519-523"},"PeriodicalIF":3.7,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361396","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 : 2024-11-25DOI: 10.1109/LAWP.2024.3505894
Ning Leng;Liao Ma;Zhanjian Liang;Shiyuan Zhang;Sai Chen;Ming Bai
Near-field measurements of active phased array antennas are typically carried out in the radiation region several wavelengths away from the antennas. The reactive near field distributed on the antenna surface carries high-resolution information, which is suitable for the array element measurement. However, limited by the aperture size of the conventional near-field probe (such as the open-ended waveguide), it is unable to obtain the high-resolution reactive near-field distribution of the active phased antennas. In this letter, we propose an efficient reactive near-field measurement method utilizing scanning optic-induced plasma scattering technology. A Ka-band active transmitting phased array antenna was measured. This method enables the direct observation of reactive near-field distributions with high resolution, allowing for high-efficiency measurement of the antenna operational states in tens of seconds. It is demonstrated that the proposed method can achieve the reactive near-field measurement efficiently and has significant potential for applications in antenna array diagnosis.
{"title":"An Efficient Reactive Near-Field Measurement Method for Active Phased Array Antennas","authors":"Ning Leng;Liao Ma;Zhanjian Liang;Shiyuan Zhang;Sai Chen;Ming Bai","doi":"10.1109/LAWP.2024.3505894","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3505894","url":null,"abstract":"Near-field measurements of active phased array antennas are typically carried out in the radiation region several wavelengths away from the antennas. The reactive near field distributed on the antenna surface carries high-resolution information, which is suitable for the array element measurement. However, limited by the aperture size of the conventional near-field probe (such as the open-ended waveguide), it is unable to obtain the high-resolution reactive near-field distribution of the active phased antennas. In this letter, we propose an efficient reactive near-field measurement method utilizing scanning optic-induced plasma scattering technology. A Ka-band active transmitting phased array antenna was measured. This method enables the direct observation of reactive near-field distributions with high resolution, allowing for high-efficiency measurement of the antenna operational states in tens of seconds. It is demonstrated that the proposed method can achieve the reactive near-field measurement efficiently and has significant potential for applications in antenna array diagnosis.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 2","pages":"474-478"},"PeriodicalIF":3.7,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10766931","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143360866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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