|A 26 (cid:2) 25 mm 2 arbitrary-shaped antenna is constructed in this article, and it was expanded to 2 (cid:2) 2 Multiple Input Multiple Output (MIMO) antenna. It has a range of 3.1 to 8.2 GHz. A T-shaped stub is employed in this instance to reduce the mutual coupling between the two ports. The effectiveness of the MIMO aerial is demonstrated using envelope correlation coefficient and radiation pattern. Additionally, it has been shown that simulated and measured results generally agree.
{"title":"Mutual Coupling Reduction in UWB MIMO Antenna Using T-shaped Stub","authors":"Kondapalli Venu Gopal, Yarravarapu Srinivasa Rao","doi":"10.2528/pierl23073103","DOIUrl":"https://doi.org/10.2528/pierl23073103","url":null,"abstract":"|A 26 (cid:2) 25 mm 2 arbitrary-shaped antenna is constructed in this article, and it was expanded to 2 (cid:2) 2 Multiple Input Multiple Output (MIMO) antenna. It has a range of 3.1 to 8.2 GHz. A T-shaped stub is employed in this instance to reduce the mutual coupling between the two ports. The effectiveness of the MIMO aerial is demonstrated using envelope correlation coefficient and radiation pattern. Additionally, it has been shown that simulated and measured results generally agree.","PeriodicalId":20579,"journal":{"name":"Progress in Electromagnetics Research Letters","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135497980","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}
{"title":"Application of Displacement Prediction Method Based on Displacement Increment and CS-BP Neural Network in Mine Landslide","authors":"Yaolong Qi, Lu Bai, Ting Hou, Pingping Huang, Weixian Tan, Wei Xu","doi":"10.2528/pierl23063004","DOIUrl":"https://doi.org/10.2528/pierl23063004","url":null,"abstract":"","PeriodicalId":20579,"journal":{"name":"Progress in Electromagnetics Research Letters","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135605080","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}
: This research extends the theory of binomial array antennas. A closed-form expression for the half-power beamwidth of the array factor of an array antenna is presented. The expression is correct for the ratios of element spacing to wavelength greater than or equal to one quarter. Also, exact equations for determining the half-power beamwidth for main-beam steering are derived. A comparison with an approximate formula for the half-power beamwidth of binomial array antennas is carried out.
{"title":"An Addition to Binomial Array Antenna Theory","authors":"Peter Apostolov","doi":"10.2528/pierl23080104","DOIUrl":"https://doi.org/10.2528/pierl23080104","url":null,"abstract":": This research extends the theory of binomial array antennas. A closed-form expression for the half-power beamwidth of the array factor of an array antenna is presented. The expression is correct for the ratios of element spacing to wavelength greater than or equal to one quarter. Also, exact equations for determining the half-power beamwidth for main-beam steering are derived. A comparison with an approximate formula for the half-power beamwidth of binomial array antennas is carried out.","PeriodicalId":20579,"journal":{"name":"Progress in Electromagnetics Research Letters","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135660057","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}
{"title":"Label-free Assessment of Vericiguat Therapy on Mitochondrial Redox States in Septic Mice by Resonance Raman Spectroscopy","authors":"Xiaoxiao Zhao, Anqi Yang, Guangbin Zheng, Ronhai Lin, Yinghe Xu, Sailing He","doi":"10.2528/pierl23091301","DOIUrl":"https://doi.org/10.2528/pierl23091301","url":null,"abstract":"","PeriodicalId":20579,"journal":{"name":"Progress in Electromagnetics Research Letters","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135709380","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}
{"title":"Design and Analysis of S-shaped Broadside Coupled Metamaterial Unit Cell as a Sensor to Ease the Classification of Different Oil Samples","authors":"J. Logeswaran, Rajasekar Boopathi Rani","doi":"10.2528/pierl23012501","DOIUrl":"https://doi.org/10.2528/pierl23012501","url":null,"abstract":"","PeriodicalId":20579,"journal":{"name":"Progress in Electromagnetics Research Letters","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69002470","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}
{"title":"Design and Fabrication of a Compact UWB BPF with Notch-band and Wide Stopband Using Dual MMRs and DGS","authors":"Hassiba Louazene, M. Challal, M. Boulakroune","doi":"10.2528/pierl22112004","DOIUrl":"https://doi.org/10.2528/pierl22112004","url":null,"abstract":"","PeriodicalId":20579,"journal":{"name":"Progress in Electromagnetics Research Letters","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69002626","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}
{"title":"Optimisation of Directed Energy Systems' Positions Subject to Uncertainty in Operations","authors":"","doi":"10.2528/pierl23022208","DOIUrl":"https://doi.org/10.2528/pierl23022208","url":null,"abstract":"","PeriodicalId":20579,"journal":{"name":"Progress in Electromagnetics Research Letters","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69002677","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}
|This letter addresses a new approach to improve the gain and isolation of a multiple input multiple output (MIMO) antenna. A C-shaped printed antenna with both ends terminated by a small rectangular section is designed as the basic antenna element for a 2 element MIMO antenna of size 0 : 8 (cid:21) (cid:2) 0 : 67 (cid:21) (cid:2) 0 : 04 (cid:21) ( (cid:21) , corresponding to the lowest operating frequency) which operates over the X band with the peak gain of 3 dBi. By introducing a double layered frequency selective surface (FSS) of unit cell dimension 0 : 2 (cid:21) (cid:2) 0 : 2 (cid:21) (cid:2) 0 : 0375 (cid:21) between the two antenna elements as an isolation wall and additionally by placing a 5 (cid:2) 3 array of FSS geometry as a re(cid:13)ector below the antenna, the isolation and gain of the two element MIMO antenna are improved by 37 dB and 3 dBi, respectively. The proposed FSS loaded MIMO antenna provides very high isolation about (cid:0) 51 dB (measured) and a very low envelope correlation coefficient (ECC) of 0.000177282 (simulated) using far (cid:12)eld approach and 0.000000033414 (calculated measured) using scattering ( S ) parameter approach. Further, MIMO parameters like diversity gain (DG), total active re(cid:13)ection coefficient (TARC), mean effective gain (MEG), and channel capacity loss (CCL) have been evaluated. The radiation pattern is unidirectional in nature with a peak gain about 6 dBi. The letter also presents detailed design guidelines for the proposed FSS loaded MIMO antenna along with their veri(cid:12)cations for Ku and K bands. The proposed structure can also be scaled up to a 4 element MIMO antenna.
{"title":"Isolation and Gain Improvement of Multiple Input Multiple Output Antenna Using Frequency Selective Surfaces","authors":"Anett Antony, Bidisha Dasgupta","doi":"10.2528/pierl23031504","DOIUrl":"https://doi.org/10.2528/pierl23031504","url":null,"abstract":"|This letter addresses a new approach to improve the gain and isolation of a multiple input multiple output (MIMO) antenna. A C-shaped printed antenna with both ends terminated by a small rectangular section is designed as the basic antenna element for a 2 element MIMO antenna of size 0 : 8 (cid:21) (cid:2) 0 : 67 (cid:21) (cid:2) 0 : 04 (cid:21) ( (cid:21) , corresponding to the lowest operating frequency) which operates over the X band with the peak gain of 3 dBi. By introducing a double layered frequency selective surface (FSS) of unit cell dimension 0 : 2 (cid:21) (cid:2) 0 : 2 (cid:21) (cid:2) 0 : 0375 (cid:21) between the two antenna elements as an isolation wall and additionally by placing a 5 (cid:2) 3 array of FSS geometry as a re(cid:13)ector below the antenna, the isolation and gain of the two element MIMO antenna are improved by 37 dB and 3 dBi, respectively. The proposed FSS loaded MIMO antenna provides very high isolation about (cid:0) 51 dB (measured) and a very low envelope correlation coefficient (ECC) of 0.000177282 (simulated) using far (cid:12)eld approach and 0.000000033414 (calculated measured) using scattering ( S ) parameter approach. Further, MIMO parameters like diversity gain (DG), total active re(cid:13)ection coefficient (TARC), mean effective gain (MEG), and channel capacity loss (CCL) have been evaluated. The radiation pattern is unidirectional in nature with a peak gain about 6 dBi. The letter also presents detailed design guidelines for the proposed FSS loaded MIMO antenna along with their veri(cid:12)cations for Ku and K bands. The proposed structure can also be scaled up to a 4 element MIMO antenna.","PeriodicalId":20579,"journal":{"name":"Progress in Electromagnetics Research Letters","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69002844","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}
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