Pub Date : 2024-07-05DOI: 10.1109/OJAP.2024.3424209
Taeho Yu;Jin Myeong Heo;Cheolsun Park;Yong Ku Jeon;Gangil Byun
This paper proposes an ultra-wideband frequency-invariant beamforming (FIB) using a generalized nesting array. To implement ultra-wideband (9:1 bandwidth ratio) FIB with a reduced number of array elements, the target frequency band is divided into subbands. The subarrays have integer multiples of inter-element spacing of half-wavelength at the maximum frequency according to the bandwidth ratio of subbands. Due to this integer multiple relationships, the array elements of the subarrays are superimposed so that the total number of array elements is reduced while maintaining FIB performance over the target frequency band. Then, the FIB weights are derived based on the desired beam pattern using the inverse Fourier transform. A Bartlett beamformer is used to generate FIB patterns of the proposed nesting array. In addition, we investigate the interrelationship between the minimum required number of array elements and design parameters (target bandwidth, beamwidth, and side lobe level). For validation, 21 printed log-periodic dipole array antennas are fabricated and measured. The direction finding performance is evaluated and compared to that of a 35-element uniform linear array. The direction of arrival (DoA) estimation results of the proposed array show a root-mean-square error of less than 2.02° for an incident angle within ±50° when a signal-to-noise ratio is 10 dB. It is demonstrated that the proposed array exhibits ultra-wideband FIB performance similar to a conventional uniform linear array but with much fewer elements.
{"title":"Ultra-Wideband Frequency-Invariant Beamforming Using a Generalized Nesting Array","authors":"Taeho Yu;Jin Myeong Heo;Cheolsun Park;Yong Ku Jeon;Gangil Byun","doi":"10.1109/OJAP.2024.3424209","DOIUrl":"10.1109/OJAP.2024.3424209","url":null,"abstract":"This paper proposes an ultra-wideband frequency-invariant beamforming (FIB) using a generalized nesting array. To implement ultra-wideband (9:1 bandwidth ratio) FIB with a reduced number of array elements, the target frequency band is divided into subbands. The subarrays have integer multiples of inter-element spacing of half-wavelength at the maximum frequency according to the bandwidth ratio of subbands. Due to this integer multiple relationships, the array elements of the subarrays are superimposed so that the total number of array elements is reduced while maintaining FIB performance over the target frequency band. Then, the FIB weights are derived based on the desired beam pattern using the inverse Fourier transform. A Bartlett beamformer is used to generate FIB patterns of the proposed nesting array. In addition, we investigate the interrelationship between the minimum required number of array elements and design parameters (target bandwidth, beamwidth, and side lobe level). For validation, 21 printed log-periodic dipole array antennas are fabricated and measured. The direction finding performance is evaluated and compared to that of a 35-element uniform linear array. The direction of arrival (DoA) estimation results of the proposed array show a root-mean-square error of less than 2.02° for an incident angle within ±50° when a signal-to-noise ratio is 10 dB. It is demonstrated that the proposed array exhibits ultra-wideband FIB performance similar to a conventional uniform linear array but with much fewer elements.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":3.5,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10587016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141572451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-03DOI: 10.1109/ojap.2024.3422426
Hans Herdian, Chun Wang, Takeshi Inoue, Atsushi Shirane, Kenichi Okada
{"title":"A Proton Irradiated CMOS On-Chip Vivaldi Antenna for 300 GHz Band Slat Array Implementation","authors":"Hans Herdian, Chun Wang, Takeshi Inoue, Atsushi Shirane, Kenichi Okada","doi":"10.1109/ojap.2024.3422426","DOIUrl":"https://doi.org/10.1109/ojap.2024.3422426","url":null,"abstract":"","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141546548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-03DOI: 10.1109/ojap.2024.3422681
Javad Shabanpour, Yongming Li, Sergei Tretyakov, Constantin Simovski
{"title":"Physical Optics and Reflection Locality in Designing Reconfigurable Intelligent Surfaces","authors":"Javad Shabanpour, Yongming Li, Sergei Tretyakov, Constantin Simovski","doi":"10.1109/ojap.2024.3422681","DOIUrl":"https://doi.org/10.1109/ojap.2024.3422681","url":null,"abstract":"","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141552379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-02DOI: 10.1109/ojap.2024.3421923
Mingxiang Gao, Sujith Raman, Zvonimir Sipus, Anja K. Skrivervik
{"title":"Analytic Approximation of Free-Space Path Loss for Implanted Antennas","authors":"Mingxiang Gao, Sujith Raman, Zvonimir Sipus, Anja K. Skrivervik","doi":"10.1109/ojap.2024.3421923","DOIUrl":"https://doi.org/10.1109/ojap.2024.3421923","url":null,"abstract":"","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141516996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-02DOI: 10.1109/ojap.2024.3421932
Vahid Sharbati, Xiulong Bao, John J. Healy, Nan Zhang, Khatereh Nadali, Max J. Ammann
{"title":"Circularly Polarized Reconfigurable Antenna Based on Liquid Metal Switching for Dual WiMAX Bands","authors":"Vahid Sharbati, Xiulong Bao, John J. Healy, Nan Zhang, Khatereh Nadali, Max J. Ammann","doi":"10.1109/ojap.2024.3421932","DOIUrl":"https://doi.org/10.1109/ojap.2024.3421932","url":null,"abstract":"","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141516994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-28DOI: 10.1109/ojap.2024.3420764
Prabhat Khanal, Jian Yang
{"title":"On Embedded Element Radiation Function and Beam Direction of Wide-Scanning Array Antennas","authors":"Prabhat Khanal, Jian Yang","doi":"10.1109/ojap.2024.3420764","DOIUrl":"https://doi.org/10.1109/ojap.2024.3420764","url":null,"abstract":"","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-20DOI: 10.1109/ojap.2024.3417318
Li Wang, Fenggan Zhang, Banghuan Hou
{"title":"Optimal Design of Low Sidelobe Sparse Linear Arrays","authors":"Li Wang, Fenggan Zhang, Banghuan Hou","doi":"10.1109/ojap.2024.3417318","DOIUrl":"https://doi.org/10.1109/ojap.2024.3417318","url":null,"abstract":"","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-18DOI: 10.1109/ojap.2024.3416399
Reza Shamsaee Malfajani, Reza Damansabz, Sampada Bodkhe, Daniel Therriault, Jean-Jacques Laurin, Mohammad S. Sharawi
{"title":"3D-Printed Encapsulated Dielectric Resonator Antennas With Large Operation Frequency Ratio for Future Wireless Communications","authors":"Reza Shamsaee Malfajani, Reza Damansabz, Sampada Bodkhe, Daniel Therriault, Jean-Jacques Laurin, Mohammad S. Sharawi","doi":"10.1109/ojap.2024.3416399","DOIUrl":"https://doi.org/10.1109/ojap.2024.3416399","url":null,"abstract":"","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-12DOI: 10.1109/ojap.2024.3413020
Heng-Tung Hsu, Yi-Fan Tsao, Arpan Desai
{"title":"A Single Radiator-Based Circularly Polarized Antenna for Indoor Wireless Communication Applications","authors":"Heng-Tung Hsu, Yi-Fan Tsao, Arpan Desai","doi":"10.1109/ojap.2024.3413020","DOIUrl":"https://doi.org/10.1109/ojap.2024.3413020","url":null,"abstract":"","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-12DOI: 10.1109/ojap.2024.3412162
Thomas Reum
{"title":"Consequences of the Potential Gauging Process for Modeling Electromagnetic Wave Propagation","authors":"Thomas Reum","doi":"10.1109/ojap.2024.3412162","DOIUrl":"https://doi.org/10.1109/ojap.2024.3412162","url":null,"abstract":"","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":null,"pages":null},"PeriodicalIF":4.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141935286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：