Pub Date : 2020-12-14DOI: 10.1109/APSYM50265.2020.9350713
H. P. Thushara, S. Mridula, A. Pradeep, P. Mohanan
Artificial Neural Network (ANN) based models are very powerful tools to learn the complex relationships in data. This paper proposes a regression-based ANN model to predict the complex permittivity of polar liquids for a range of temperature and frequency using the Debye parameters -static permittivity and high frequency permittivity. The model was built based on the dataset obtained from National Physical Laboratory report MAT 23. The proposed model predicts the complex permittivity without the prior knowledge about the best fit Debye equation and related calculations. The model development was initiated with data preprocessing technique followed by parametric tuning and performance evaluation. This model offers a result of low mean square error and it was validated by comparing the actual data with the predicted data.
{"title":"Prediction of Complex Permittivity of Polar Liquids Using Regression Based Artificial Neural Network","authors":"H. P. Thushara, S. Mridula, A. Pradeep, P. Mohanan","doi":"10.1109/APSYM50265.2020.9350713","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350713","url":null,"abstract":"Artificial Neural Network (ANN) based models are very powerful tools to learn the complex relationships in data. This paper proposes a regression-based ANN model to predict the complex permittivity of polar liquids for a range of temperature and frequency using the Debye parameters -static permittivity and high frequency permittivity. The model was built based on the dataset obtained from National Physical Laboratory report MAT 23. The proposed model predicts the complex permittivity without the prior knowledge about the best fit Debye equation and related calculations. The model development was initiated with data preprocessing technique followed by parametric tuning and performance evaluation. This model offers a result of low mean square error and it was validated by comparing the actual data with the predicted data.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131565285","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 : 2020-12-14DOI: 10.1109/APSYM50265.2020.9350680
P. Sathishkannan, M. Sowfia, S. Raman, M. Gopikrishna
In this paper, a novel Left Handed (LH) material to implement Composite Right and Left Handed (CR/L-H) Transmission Line (TL) is proposed. The LH material is a combination of series Inter-digital Capacitor (IDC) and a shunt annular ring inductor. The CR/L-H TL unit cell is coupled to the 50Ω microstrip line via capacitive coupling to realize the Bandpass Filter (BPF). The proposed BPF structure is analysed in two different Electromagnetic (EM) simulators and its transmission and reflection characteristics are compared. The proposed filter shows a fractional Bandwidth (BW) of 48.2% and an insertion loss as low as 0.2 dB. Size of the proposed filter is 0.40λg × 0.32 λg.
{"title":"A Novel CR/L-H Transmission Line based Bandpass Filter for sub 6 GHz 5G","authors":"P. Sathishkannan, M. Sowfia, S. Raman, M. Gopikrishna","doi":"10.1109/APSYM50265.2020.9350680","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350680","url":null,"abstract":"In this paper, a novel Left Handed (LH) material to implement Composite Right and Left Handed (CR/L-H) Transmission Line (TL) is proposed. The LH material is a combination of series Inter-digital Capacitor (IDC) and a shunt annular ring inductor. The CR/L-H TL unit cell is coupled to the 50Ω microstrip line via capacitive coupling to realize the Bandpass Filter (BPF). The proposed BPF structure is analysed in two different Electromagnetic (EM) simulators and its transmission and reflection characteristics are compared. The proposed filter shows a fractional Bandwidth (BW) of 48.2% and an insertion loss as low as 0.2 dB. Size of the proposed filter is 0.40λg × 0.32 λg.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114795487","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 : 2020-12-14DOI: 10.1109/APSYM50265.2020.9350678
Balajee R S, S. Baudha
In this article, a compact ultra-wideband mi-crostrip patch antenna having a defective ground plane with parasitic strip is presented. The proposed antenna of overall dimensions 14x14x1.5 mm3 is simulated on the low-cost substrate, FR-4. The impedance bandwidth of the structure, where S11 less than -10 dB, is from 2.83 GHz to 12.22 GHz (124.81%). This antenna finds use in the 3.5,5.5 GHz (WiMAX bands), 5.2,5.8 GHz (WLAN bands), 4-8 GHz (C Band), 8-12 GHz (X Band) and other wireless communication applications. The effect of variations in the parameters and other parameters are presented.
{"title":"Planar Antenna with Rectangular Parasitic Patch and Strip for Ultra-wideband Applications","authors":"Balajee R S, S. Baudha","doi":"10.1109/APSYM50265.2020.9350678","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350678","url":null,"abstract":"In this article, a compact ultra-wideband mi-crostrip patch antenna having a defective ground plane with parasitic strip is presented. The proposed antenna of overall dimensions 14x14x1.5 mm3 is simulated on the low-cost substrate, FR-4. The impedance bandwidth of the structure, where S11 less than -10 dB, is from 2.83 GHz to 12.22 GHz (124.81%). This antenna finds use in the 3.5,5.5 GHz (WiMAX bands), 5.2,5.8 GHz (WLAN bands), 4-8 GHz (C Band), 8-12 GHz (X Band) and other wireless communication applications. The effect of variations in the parameters and other parameters are presented.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116333568","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 : 2020-12-14DOI: 10.1109/APSYM50265.2020.9350670
Mohammad Abdul Shukoor, Sukomal Dey
This work presents a single-layered broadband polarization-insensitive circuit analog absorber for X to K-band applications. The design is made of a circular ring resonator loaded with four lumped resistors and a circular-split cross dipole, printed on the top of a dielectric substrate terminated with the ground. In the azimuthal plane, the proposed structure is insensitive to different polarization angles of the electric field due to the four-fold symmetry, and it also demonstrates a stable absorptivity up to 45° for both Transverse Electric (TE) and Transverse Magnetic (TM) incidences in the elevation plane. Multiple plasmonic resonances are responsible for the broadband behaviour, and the ohmic losses in lumped elements are the reason for near-unity absorption over the broadband. The response of the proposed equivalent transmission line model is validated with the full-wave analysis up to a reasonable extent. To the best of authors knowledge, this design is angular stable absorbing metasurface operational with limited chip resistors over broadband without compromising the performances, and it is suitable for the applications like Radar Cross Section (RCS) reduction and RF energy harvesting.
{"title":"Broadband Polarization Insensitive Angular Stable Cross Dipole Loaded Circular Ring Circuit Analog Absorber (CAA) for X to K-Band Applications","authors":"Mohammad Abdul Shukoor, Sukomal Dey","doi":"10.1109/APSYM50265.2020.9350670","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350670","url":null,"abstract":"This work presents a single-layered broadband polarization-insensitive circuit analog absorber for X to K-band applications. The design is made of a circular ring resonator loaded with four lumped resistors and a circular-split cross dipole, printed on the top of a dielectric substrate terminated with the ground. In the azimuthal plane, the proposed structure is insensitive to different polarization angles of the electric field due to the four-fold symmetry, and it also demonstrates a stable absorptivity up to 45° for both Transverse Electric (TE) and Transverse Magnetic (TM) incidences in the elevation plane. Multiple plasmonic resonances are responsible for the broadband behaviour, and the ohmic losses in lumped elements are the reason for near-unity absorption over the broadband. The response of the proposed equivalent transmission line model is validated with the full-wave analysis up to a reasonable extent. To the best of authors knowledge, this design is angular stable absorbing metasurface operational with limited chip resistors over broadband without compromising the performances, and it is suitable for the applications like Radar Cross Section (RCS) reduction and RF energy harvesting.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126740651","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 : 2020-12-14DOI: 10.1109/apsym50265.2020.9350726
{"title":"[APSYM2020 Title Page]","authors":"","doi":"10.1109/apsym50265.2020.9350726","DOIUrl":"https://doi.org/10.1109/apsym50265.2020.9350726","url":null,"abstract":"","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127359733","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 : 2020-12-14DOI: 10.1109/APSYM50265.2020.9350676
Rajeev Mulugu, C. Saha
In the modern era, humans are suffering from life-threatening diseases that are curable if detected in the early stages. Wireless capsule endoscopy is a modern, non-invasive technique to diagnose the gastrointestinal tract for cancer, Crohn's disease, bleeding, etc. Hence this diagnostic technique has the utmost importance which attracted attention in recent times. To achieve higher data rates and frame rates with higher image resolution, an inner wall dual loop antenna with a u-slotted patch at the UWB band (3.1 GHz to 10.6 GHz) is proposed in this paper. The simulated results show the antenna's excellent performance in terms of return loss with a bandwidth of 7.5 GHz ranging from 3.1 GHz to 10.6 GHz. The antenna is quasi omnidirectional with maximum gains of -36.78 dBi, -38 dBi, -34.36 dBi, and -34.68 dBi at 3 GHz, 5 GHz, 8 GHz, and 10 GHz respectively which is common in antennas for wireless capsule endoscopy because of the highly lossy environment.
{"title":"Design, Development and Realization of UWB Antenna for Wireless Capsule Endoscopy","authors":"Rajeev Mulugu, C. Saha","doi":"10.1109/APSYM50265.2020.9350676","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350676","url":null,"abstract":"In the modern era, humans are suffering from life-threatening diseases that are curable if detected in the early stages. Wireless capsule endoscopy is a modern, non-invasive technique to diagnose the gastrointestinal tract for cancer, Crohn's disease, bleeding, etc. Hence this diagnostic technique has the utmost importance which attracted attention in recent times. To achieve higher data rates and frame rates with higher image resolution, an inner wall dual loop antenna with a u-slotted patch at the UWB band (3.1 GHz to 10.6 GHz) is proposed in this paper. The simulated results show the antenna's excellent performance in terms of return loss with a bandwidth of 7.5 GHz ranging from 3.1 GHz to 10.6 GHz. The antenna is quasi omnidirectional with maximum gains of -36.78 dBi, -38 dBi, -34.36 dBi, and -34.68 dBi at 3 GHz, 5 GHz, 8 GHz, and 10 GHz respectively which is common in antennas for wireless capsule endoscopy because of the highly lossy environment.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125328043","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 : 2020-12-14DOI: 10.1109/APSYM50265.2020.9350725
Soumik Dey, Sukomal Dey
This work presents a circularly polarized Fabry- Perot cavity antenna (FPCA) using a new uniplanar electro- magnetic bandgap (EBG) superstrate. Proposed EBG poses a frequency bandgap in the sub-6 GHz frequency range from 3.07-4 GHz. Unit cell has overall dimension of 0.071 λ0 × 0.071 λ0 × 0.018 λ0, where λ0 is the free space wavelength at center frequency of 3.53 GHz. A 7 × 7 EBG lattice is used as partially reflective surface (PRS) over a metamaterial based circularly polarized (CP) antenna to improve the directivity. Peak gain of the primary CP antenna is 7.51 dBic at 3.66 GHz and that of the EBG superstrate loaded FPCA is 9.67 dBic.
{"title":"EBG Superstrate Loaded Circularly Polarized Fabry-Perot Cavity Antenna at Sub-6 GHz for Satellite and 5G Cellular Communications","authors":"Soumik Dey, Sukomal Dey","doi":"10.1109/APSYM50265.2020.9350725","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350725","url":null,"abstract":"This work presents a circularly polarized Fabry- Perot cavity antenna (FPCA) using a new uniplanar electro- magnetic bandgap (EBG) superstrate. Proposed EBG poses a frequency bandgap in the sub-6 GHz frequency range from 3.07-4 GHz. Unit cell has overall dimension of 0.071 λ0 × 0.071 λ0 × 0.018 λ0, where λ0 is the free space wavelength at center frequency of 3.53 GHz. A 7 × 7 EBG lattice is used as partially reflective surface (PRS) over a metamaterial based circularly polarized (CP) antenna to improve the directivity. Peak gain of the primary CP antenna is 7.51 dBic at 3.66 GHz and that of the EBG superstrate loaded FPCA is 9.67 dBic.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121891482","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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