Pub Date : 2023-10-01DOI: 10.12928/telkomnika.v21i5.25016
Shahir Fleyeh Nawaf, Lujain S. Abdulla, Abdulmutalib A-Wahab Husein
In this study, it is aimed to obtain two different asymmetric radiation patterns obtained from antennas in the shape of the cross-section of a parabolic reflector (fan blade type antennas) and antennas with cosecant-square radiation characteristics at two different frequencies from a single antenna. For this purpose, firstly, a fan blade type antenna design will be made, and then the reflective surface of this antenna will be completed to the shape of the reflective surface of the antenna with the cosecant-square radiation characteristic with the frequency selective surface designed to provide the characteristics suitable for the purpose. The frequency selective surface designed and it provides the perfect transmission as possible at 4 GHz operating frequency, while it will act as a band-quenching filter for electromagnetic waves at 5 GHz operating frequency and will be a reflective surface. Thanks to this frequency selective surface to be used as a reflective surface in the antenna, a fan blade type radiation characteristic at 4 GHz operating frequency will be obtained, while a cosecant-square radiation characteristic at 5 GHz operating frequency will be obtained .
{"title":"Reflector antenna design in different frequencies using frequency selective surfaces","authors":"Shahir Fleyeh Nawaf, Lujain S. Abdulla, Abdulmutalib A-Wahab Husein","doi":"10.12928/telkomnika.v21i5.25016","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.25016","url":null,"abstract":"In this study, it is aimed to obtain two different asymmetric radiation patterns obtained from antennas in the shape of the cross-section of a parabolic reflector (fan blade type antennas) and antennas with cosecant-square radiation characteristics at two different frequencies from a single antenna. For this purpose, firstly, a fan blade type antenna design will be made, and then the reflective surface of this antenna will be completed to the shape of the reflective surface of the antenna with the cosecant-square radiation characteristic with the frequency selective surface designed to provide the characteristics suitable for the purpose. The frequency selective surface designed and it provides the perfect transmission as possible at 4 GHz operating frequency, while it will act as a band-quenching filter for electromagnetic waves at 5 GHz operating frequency and will be a reflective surface. Thanks to this frequency selective surface to be used as a reflective surface in the antenna, a fan blade type radiation characteristic at 4 GHz operating frequency will be obtained, while a cosecant-square radiation characteristic at 5 GHz operating frequency will be obtained .","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135063727","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 : 2023-10-01DOI: 10.12928/telkomnika.v21i5.24678
M. H. Mohamad, Nurusolihah Zamri, N. K. Ibrahim
{"title":"Wavelet-based sensing technique in cognitive radio network","authors":"M. H. Mohamad, Nurusolihah Zamri, N. K. Ibrahim","doi":"10.12928/telkomnika.v21i5.24678","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24678","url":null,"abstract":"","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47312512","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 : 2023-10-01DOI: 10.12928/telkomnika.v21i5.24872
Y. A. Mohammed, Layla H. Abood, N. N. Kadhim
ABSTRACT
抽象
{"title":"Design and simulation an optimal enhanced PI controller for congestion avoidance in TCP/AQM system","authors":"Y. A. Mohammed, Layla H. Abood, N. N. Kadhim","doi":"10.12928/telkomnika.v21i5.24872","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24872","url":null,"abstract":"ABSTRACT","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49073043","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 : 2023-10-01DOI: 10.12928/telkomnika.v21i5.25305
Olzhas Tasmagambetov, Y. Seitkulov, R. Ospanov, B. Yergaliyeva
ABSTRACT
摘要
{"title":"Fault-tolerant backup storage system for confidential data in distributed servers","authors":"Olzhas Tasmagambetov, Y. Seitkulov, R. Ospanov, B. Yergaliyeva","doi":"10.12928/telkomnika.v21i5.25305","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.25305","url":null,"abstract":"ABSTRACT","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66290868","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 : 2023-10-01DOI: 10.12928/telkomnika.v21i5.24889
H. K. Omar, M. Frikha, A. Jumaa
{"title":"Big data cloud-based recommendation system using NLP techniques with machine and deep learning","authors":"H. K. Omar, M. Frikha, A. Jumaa","doi":"10.12928/telkomnika.v21i5.24889","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24889","url":null,"abstract":"","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46661148","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 : 2023-10-01DOI: 10.12928/telkomnika.v21i5.24370
M. Miry, A. H. Mary
ABSTRACT
摘要
{"title":"Efficient combined fuzzy logic and LMS algorithm for smart antenna","authors":"M. Miry, A. H. Mary","doi":"10.12928/telkomnika.v21i5.24370","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24370","url":null,"abstract":"ABSTRACT","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45526664","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 : 2023-10-01DOI: 10.12928/telkomnika.v21i5.24839
Pham Van Huu Thien, Nguyen Ngoc Son
{"title":"Electroencephalography-based brain-computer interface using neural networks","authors":"Pham Van Huu Thien, Nguyen Ngoc Son","doi":"10.12928/telkomnika.v21i5.24839","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24839","url":null,"abstract":"","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47701608","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 : 2023-10-01DOI: 10.12928/telkomnika.v21i5.25118
Le Thi Ngoc Tu, H. Tung
{"title":"Impact of CuS counter electrode calcination temperature on quantum dot sensitized solar cell performance","authors":"Le Thi Ngoc Tu, H. Tung","doi":"10.12928/telkomnika.v21i5.25118","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.25118","url":null,"abstract":"","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48370943","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 : 2023-10-01DOI: 10.12928/telkomnika.v21i5.24515
Noor M. Al-Moosawi, Raidah S. Khudeyer
{"title":"ResNet-n/DR: Automated diagnosis of diabetic retinopathy using a residual neural network","authors":"Noor M. Al-Moosawi, Raidah S. Khudeyer","doi":"10.12928/telkomnika.v21i5.24515","DOIUrl":"https://doi.org/10.12928/telkomnika.v21i5.24515","url":null,"abstract":"","PeriodicalId":38281,"journal":{"name":"Telkomnika (Telecommunication Computing Electronics and Control)","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41488944","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：