Pub Date : 2025-02-06DOI: 10.1109/LAWP.2025.3534076
{"title":"IEEE AWPL Special Cluster 2025 on “Recent Progress on Channel Measurement and Modeling for 6G”","authors":"","doi":"10.1109/LAWP.2025.3534076","DOIUrl":"https://doi.org/10.1109/LAWP.2025.3534076","url":null,"abstract":"","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 2","pages":"524-524"},"PeriodicalIF":3.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10876843","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143361412","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 : 2024-12-13DOI: 10.1109/LAWP.2024.3517538
Jie-Er Zhang;Gu Liu;Wen-Wen Yang;Jian-Xin Chen
The microwave (MW)/millimeter-wave (MMW) shared aperture technique is a promising approach to support different frequency bands within limited space. In this letter, a 1 × 4 beam-scanning linear antenna array operating at the MMW (28/39 GHz) band and a vehicle-to-everything (V2X) (5.9 GHz) patch antenna are integrated to share the same aperture. Not only are the entire MMW bands covered, but also the mutually enhanced characteristic between the MW and MMW bands is achieved with the slot-loaded patch. The MW patch nested outside of the MMW radiators can enhance the gain and extend the beam-scanning angles of the MMW antenna array. Furthermore, the hollowed space reserved for MMW antenna can improve the radiation pattern of the MW patch TM21 mode. The proposed tri-band antenna was fabricated and measured. Measured results show that the MMW antenna can cover the bandwidths of 24.4 GHz to 29.3 GHz/36.7 GHz to 41.4 GHz, with the peak gains of 11 dBi/11.3 dBi at 28 GHz/39 GHz frequency bands, while the proposed MW antenna achieves a bandwidth of ∼170 MHz with a peak gain of 8.03 dBi.
{"title":"A Tri-Frequency Shared-Aperture Antenna for Cooperative Work of V2X and Millimeter-Wave Bands","authors":"Jie-Er Zhang;Gu Liu;Wen-Wen Yang;Jian-Xin Chen","doi":"10.1109/LAWP.2024.3517538","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3517538","url":null,"abstract":"The microwave (MW)/millimeter-wave (MMW) shared aperture technique is a promising approach to support different frequency bands within limited space. In this letter, a 1 × 4 beam-scanning linear antenna array operating at the MMW (28/39 GHz) band and a vehicle-to-everything (V2X) (5.9 GHz) patch antenna are integrated to share the same aperture. Not only are the entire MMW bands covered, but also the mutually enhanced characteristic between the MW and MMW bands is achieved with the slot-loaded patch. The MW patch nested outside of the MMW radiators can enhance the gain and extend the beam-scanning angles of the MMW antenna array. Furthermore, the hollowed space reserved for MMW antenna can improve the radiation pattern of the MW patch TM<sub>21</sub> mode. The proposed tri-band antenna was fabricated and measured. Measured results show that the MMW antenna can cover the bandwidths of 24.4 GHz to 29.3 GHz/36.7 GHz to 41.4 GHz, with the peak gains of 11 dBi/11.3 dBi at 28 GHz/39 GHz frequency bands, while the proposed MW antenna achieves a bandwidth of ∼170 MHz with a peak gain of 8.03 dBi.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 3","pages":"776-780"},"PeriodicalIF":3.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553200","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 : 2024-12-13DOI: 10.1109/LAWP.2024.3516952
Daniel R. Prado;Xuekang Liu;Rosa Letizia;Claudio Paoloni;Lei Wang
An efficient analysis technique for a transmitarray (TA) unit cell based on a method of moments (MoM) in the spectral domain assuming local periodicity is proposed. The MoM employs basis functions consisting of Chebyshev polynomials weighed by a function that accounts for edge singularities. The analysis technique is applied to a unit cell consisting of two sets of five parallel dipoles that are shifted one with respect to the other to create a Huygens resonance that maximizes transmission of the impinging plane wave. Comparisons with circuit models show that the proposed technique achieves better accuracy while providing significant computational gains compared with commercial general purpose software. Finally, a unit cell is optimized to work in the W band with the aim of employing it to the design of TAs for ultra-capacity fixed wireless links.
{"title":"Efficient Analysis of Highly Resonant Transmitarray Element For Sub-THz 6G Communications","authors":"Daniel R. Prado;Xuekang Liu;Rosa Letizia;Claudio Paoloni;Lei Wang","doi":"10.1109/LAWP.2024.3516952","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3516952","url":null,"abstract":"An efficient analysis technique for a transmitarray (TA) unit cell based on a method of moments (MoM) in the spectral domain assuming local periodicity is proposed. The MoM employs basis functions consisting of Chebyshev polynomials weighed by a function that accounts for edge singularities. The analysis technique is applied to a unit cell consisting of two sets of five parallel dipoles that are shifted one with respect to the other to create a Huygens resonance that maximizes transmission of the impinging plane wave. Comparisons with circuit models show that the proposed technique achieves better accuracy while providing significant computational gains compared with commercial general purpose software. Finally, a unit cell is optimized to work in the W band with the aim of employing it to the design of TAs for ultra-capacity fixed wireless links.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 3","pages":"771-775"},"PeriodicalIF":3.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553331","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 : 2024-12-13DOI: 10.1109/LAWP.2024.3517660
Rui Wu;Guang-Hong Wen;Zhi-Xia Du;Fu-Chang Chen
This letter presents a broadband stub-loaded integrated filtering antenna with a simple structure for 2G/3G/4G/IMT base station applications. By adding stubs to the dipole arms, new current paths and radiation nulls are introduced, effectively suppressing the radiations outside the passband. Two L-shaped stubs with different lengths introduce controllable radiation nulls at out-of-band to achieve frequency-selective characteristics. Moreover, parasitic patch stubs surrounding the radiator serve to enhance the suppression level at high frequencies. The measured results indicate that impedance bandwidth is 65% and out-of-band suppression performance is more than 16 dB. Stable realized gain of around 8.4 dBi and high isolation of more than 25 dB are obtained within the passband. Moreover, the integrated controllable filtering performance has been validated with filtering antenna array for modern base station applications.
{"title":"Broadband Stub-Loaded Integrated Filtering Antenna for Base Station Applications","authors":"Rui Wu;Guang-Hong Wen;Zhi-Xia Du;Fu-Chang Chen","doi":"10.1109/LAWP.2024.3517660","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3517660","url":null,"abstract":"This letter presents a broadband stub-loaded integrated filtering antenna with a simple structure for 2G/3G/4G/IMT base station applications. By adding stubs to the dipole arms, new current paths and radiation nulls are introduced, effectively suppressing the radiations outside the passband. Two L-shaped stubs with different lengths introduce controllable radiation nulls at out-of-band to achieve frequency-selective characteristics. Moreover, parasitic patch stubs surrounding the radiator serve to enhance the suppression level at high frequencies. The measured results indicate that impedance bandwidth is 65% and out-of-band suppression performance is more than 16 dB. Stable realized gain of around 8.4 dBi and high isolation of more than 25 dB are obtained within the passband. Moreover, the integrated controllable filtering performance has been validated with filtering antenna array for modern base station applications.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 3","pages":"781-785"},"PeriodicalIF":3.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553528","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 nonlinear phase modulated (NPM), dual-beam, circularly polarized (CP) scalar impedance modulated (SIM) metasurface-based leaky-wave antenna (LWA) with butterfly-shaped beamforming, operates at fr = 15.5 GHz. A comprehensive NPM technique is analytically presented to obtain proposed metasurface-based LWA. The proposed NPM function is numerically realized by its magnitude and phase response. Using NPM, a dual-beam linearly polarized (LP) surface impedance (Zsurf) is analytically mapped into CP impedance with simulated and measured data validation of proposed dual beam, CP LWA. An overall dimension of 15${{lambda }_0} times $ 7.5${{lambda }_0}$ yields highly directive dual beam (i.e., {${{theta }_n}$, ${{varphi }_n}$} = {(−35$^circ $, 0$^circ $), (32$^circ $, 0$^circ $)}) with a maximum realized gain (gmax) of 21.52 dBic and half-power beamwidth of 4.2$^circ $ each. A wideband axial ratio beamwidth of 1.8 GHz is obtained with an overall axial ratio of <1.2 dB.
{"title":"Nonlinearly Modulated Scalar Metasurface with Circularly Polarized Butterfly-Shaped Beamforming","authors":"Indranil Ghosh;Swarnadipto Ghosh;Sayan Chatterjee;Bhaskar Gupta","doi":"10.1109/LAWP.2024.3516213","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3516213","url":null,"abstract":"This letter presents a nonlinear phase modulated (NPM), dual-beam, circularly polarized (CP) scalar impedance modulated (SIM) metasurface-based leaky-wave antenna (LWA) with butterfly-shaped beamforming, operates at <italic>f<sub>r</sub></i> = 15.5 GHz. A comprehensive NPM technique is analytically presented to obtain proposed metasurface-based LWA. The proposed NPM function is numerically realized by its magnitude and phase response. Using NPM, a dual-beam linearly polarized (LP) surface impedance (<italic>Z</i><sub>surf</sub>) is analytically mapped into CP impedance with simulated and measured data validation of proposed dual beam, CP LWA. An overall dimension of 15<inline-formula><tex-math>${{lambda }_0} times $</tex-math></inline-formula> 7.5<inline-formula><tex-math>${{lambda }_0}$</tex-math></inline-formula> yields highly directive dual beam (i.e., {<inline-formula><tex-math>${{theta }_n}$</tex-math></inline-formula>, <inline-formula><tex-math>${{varphi }_n}$</tex-math></inline-formula>} = {(−35<inline-formula><tex-math>$^circ $</tex-math></inline-formula>, 0<inline-formula><tex-math>$^circ $</tex-math></inline-formula>), (32<inline-formula><tex-math>$^circ $</tex-math></inline-formula>, 0<inline-formula><tex-math>$^circ $</tex-math></inline-formula>)}) with a maximum realized gain (<italic>g</i><sub>max</sub>) of 21.52 dBic and half-power beamwidth of 4.2<inline-formula><tex-math>$^circ $</tex-math></inline-formula> each. A wideband axial ratio beamwidth of 1.8 GHz is obtained with an overall axial ratio of <1.2 dB.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 3","pages":"756-760"},"PeriodicalIF":3.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553107","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}
In this letter, a multipolarized reconfigurable metasurface (PRMS) antenna with dimensions of 0.67λ × 0.67λ × 0.07λ is proposed. The proposed antenna enables the realization of left-hand circular polarization (LHCP), right-hand circular polarization (RHCP), and linear polarization (LP) by rotating the orientation of the metasurface (MS) structure, while keeping the feed structure fixed. Unlike the conventional repeated periodic structure, the MS utilizes a modular hybrid design, which contains four hybrid radiation submodules, while the central repeated chamfered area serves as the feeding interface. The series/parallel mode resonant paths with frequency differences are constructed by hybrid units coupling of different modules, which can construct conditions for low/high-frequency circularly polarized (CP) waves, respectively. When operating in LHCP and RHCP, the antenna achieves improved 3 dB axial ratio bandwidths of 20.23% (5.02 GHz to 6.15 GHz) and 18.5% (5.09 GHz to 6.13 GHz), respectively. Additionally, the stacked 10 dB impedance bandwidth of the proposed antenna across the CP frequencies exceeds 40%, accompanied by a measured gain of over 6 dBic. Thus, the proposed antenna effectively covers the 5G NR n46 band (5.15 GHz to 5.925 GHz).
{"title":"Modular Hybrid Metasurface Broadband Multipolarized Antenna for 5G DSRC Applications","authors":"Zijian Xing;Jilong Cui;Xiaoting Wang;Jinping Zhang;Jianying Li;Chow-Yen-Desmond Sim","doi":"10.1109/LAWP.2024.3516752","DOIUrl":"https://doi.org/10.1109/LAWP.2024.3516752","url":null,"abstract":"In this letter, a multipolarized reconfigurable metasurface (PRMS) antenna with dimensions of 0.67λ × 0.67λ × 0.07λ is proposed. The proposed antenna enables the realization of left-hand circular polarization (LHCP), right-hand circular polarization (RHCP), and linear polarization (LP) by rotating the orientation of the metasurface (MS) structure, while keeping the feed structure fixed. Unlike the conventional repeated periodic structure, the MS utilizes a modular hybrid design, which contains four hybrid radiation submodules, while the central repeated chamfered area serves as the feeding interface. The series/parallel mode resonant paths with frequency differences are constructed by hybrid units coupling of different modules, which can construct conditions for low/high-frequency circularly polarized (CP) waves, respectively. When operating in LHCP and RHCP, the antenna achieves improved 3 dB axial ratio bandwidths of 20.23% (5.02 GHz to 6.15 GHz) and 18.5% (5.09 GHz to 6.13 GHz), respectively. Additionally, the stacked 10 dB impedance bandwidth of the proposed antenna across the CP frequencies exceeds 40%, accompanied by a measured gain of over 6 dBic. Thus, the proposed antenna effectively covers the 5G NR n46 band (5.15 GHz to 5.925 GHz).","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 3","pages":"766-770"},"PeriodicalIF":3.7,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553303","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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