Pub Date : 2020-12-14DOI: 10.1109/APSYM50265.2020.9350731
R. C, D. S, Debarati G, Chinmoy S, J. Siddiqui, Y. Antar
This document discusses design of a four-element MIMO antenna system deploying split ring resonator (SRR) loaded printed monopoles for millimeter wave 5G applications i.e. at 28/38 GHz. Two similar sized electrically small split ring resonator (SRR), loaded on either side of the printed monopole constitutes the fundamental single antenna element radiating efficiently at 28 and 38 Gigahertz bands. Excellent radiation and impedance characteristics are observed in these both bands when a 4-element MIMO antenna was implemented by deploying the fundamental antenna element. The fabrication and experimental results of the design presented herein are in progress. The antenna proposed here has portrayed 2.2 Gigahertz and 1.2 Gigahertz of impedance bandwidth centered at 28 Gigahertz and 38 Gigahertz respectively, exhibited satisfactory low Envelope Correlation Coefficient and mutual coupling. This antenna can better play the part as a potential candidate for 5G base station applications.
{"title":"Four Element MIMO Antenna System Based on SRR Loaded Printed Monopoles for 28/38 GHz 5G Applications","authors":"R. C, D. S, Debarati G, Chinmoy S, J. Siddiqui, Y. Antar","doi":"10.1109/APSYM50265.2020.9350731","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350731","url":null,"abstract":"This document discusses design of a four-element MIMO antenna system deploying split ring resonator (SRR) loaded printed monopoles for millimeter wave 5G applications i.e. at 28/38 GHz. Two similar sized electrically small split ring resonator (SRR), loaded on either side of the printed monopole constitutes the fundamental single antenna element radiating efficiently at 28 and 38 Gigahertz bands. Excellent radiation and impedance characteristics are observed in these both bands when a 4-element MIMO antenna was implemented by deploying the fundamental antenna element. The fabrication and experimental results of the design presented herein are in progress. The antenna proposed here has portrayed 2.2 Gigahertz and 1.2 Gigahertz of impedance bandwidth centered at 28 Gigahertz and 38 Gigahertz respectively, exhibited satisfactory low Envelope Correlation Coefficient and mutual coupling. This antenna can better play the part as a potential candidate for 5G base station applications.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"150 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":"115593869","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/APSYM50265.2020.9350711
Anila Kuriakose, T. George, A. S
This paper presents a compact, low cost, high gain Ultra wideband (UWB) Vivaldi antenna convenient for Through-wall Radar (TWR) applications. This antenna, designed on low cost FR-4 substrate with thickness 0.8 mm has an operating frequency range from 1.9 GHz to 12 GHz. The proposed antenna shows a stable radiation pattern within the operating range and a gain greater than 6 dBi in the frequency range 2.2 GHz – 6 GHz with a maximum gain of 8.2 dBi and directivity of 9.04 dBi at 4.5 GHz which is ideal for Through wall Radar applications. Initially a compact and wideband Vivaldi antenna with exponentially tapered slot is designed and fabricated. Corrugations are added along the length of the antenna and periodic grating elements are inserted at the opening end of the exponential slot resulting in significant increase in gain, improved directivity and better impedance matching even at lower frequencies of the operating band. The fabricated antenna is tested and the measurement data corroborates the simulation results from Computer Simulation Technology Microwave Studio (CST-MWS).
{"title":"Improved High Gain Vivaldi Antenna Design for Through-wall Radar Applications","authors":"Anila Kuriakose, T. George, A. S","doi":"10.1109/APSYM50265.2020.9350711","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350711","url":null,"abstract":"This paper presents a compact, low cost, high gain Ultra wideband (UWB) Vivaldi antenna convenient for Through-wall Radar (TWR) applications. This antenna, designed on low cost FR-4 substrate with thickness 0.8 mm has an operating frequency range from 1.9 GHz to 12 GHz. The proposed antenna shows a stable radiation pattern within the operating range and a gain greater than 6 dBi in the frequency range 2.2 GHz – 6 GHz with a maximum gain of 8.2 dBi and directivity of 9.04 dBi at 4.5 GHz which is ideal for Through wall Radar applications. Initially a compact and wideband Vivaldi antenna with exponentially tapered slot is designed and fabricated. Corrugations are added along the length of the antenna and periodic grating elements are inserted at the opening end of the exponential slot resulting in significant increase in gain, improved directivity and better impedance matching even at lower frequencies of the operating band. The fabricated antenna is tested and the measurement data corroborates the simulation results from Computer Simulation Technology Microwave Studio (CST-MWS).","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"1 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":"130266921","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/APSYM50265.2020.9350674
Sarin V. P, Vinesh P. V, M. M, V. K
This paper presents a miniaturized electromagnetic cloaking scheme in the microwave frequency regime using cylindrically arranged dogbone metallic inclusions. Multipole scattering theory has been utilized to extract the true reason behind cloaking mechanism. It is found that the strong excitation of magnetic resonance along with the non resonant excitation of electric dipole moments significantly reduce far-field scattering from the structure. The invisibility mechanism is experimentally proved using backscattering measurements and are validated using full-wave simulation studies.
{"title":"A Miniaturized Electromagnetic Invisibility Cloaking Scheme","authors":"Sarin V. P, Vinesh P. V, M. M, V. K","doi":"10.1109/APSYM50265.2020.9350674","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350674","url":null,"abstract":"This paper presents a miniaturized electromagnetic cloaking scheme in the microwave frequency regime using cylindrically arranged dogbone metallic inclusions. Multipole scattering theory has been utilized to extract the true reason behind cloaking mechanism. It is found that the strong excitation of magnetic resonance along with the non resonant excitation of electric dipole moments significantly reduce far-field scattering from the structure. The invisibility mechanism is experimentally proved using backscattering measurements and are validated using full-wave simulation studies.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"1 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":"130800318","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/APSYM50265.2020.9350708
S. Benny, S. Sahoo
Phased array antennas are being increasingly used in weather radars. However, these antennas have the inherent property that the horizontal and vertical waves are not orthogonal in all azimuth and elevation angles range. Thus, designing phased array antennas with very low cross-polarization is of significant interest to radar scientists and engineers. This work aims at implementing a dual linearly polarized aperture-coupled antenna design and layout so as to reduce this undesired cross-polarization while maintaining the required beamwidth, radiation pattern and scan range range. Here, an antenna element and the corresponding subarray of the antenna elements are implemented, which result in significantly low cross-polarization. This sub-array will be used for full array design.
{"title":"Enhancement in Dual Polarization Phased Array Antenna Performance and Calibration Techniques for Weather Radar Applications","authors":"S. Benny, S. Sahoo","doi":"10.1109/APSYM50265.2020.9350708","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350708","url":null,"abstract":"Phased array antennas are being increasingly used in weather radars. However, these antennas have the inherent property that the horizontal and vertical waves are not orthogonal in all azimuth and elevation angles range. Thus, designing phased array antennas with very low cross-polarization is of significant interest to radar scientists and engineers. This work aims at implementing a dual linearly polarized aperture-coupled antenna design and layout so as to reduce this undesired cross-polarization while maintaining the required beamwidth, radiation pattern and scan range range. Here, an antenna element and the corresponding subarray of the antenna elements are implemented, which result in significantly low cross-polarization. This sub-array will be used for full array design.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"5 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":"125690247","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/APSYM50265.2020.9350681
Premsai Regalla, A. Kumar
Authors investigate the application of a cylindrical dielectric resonator (CDR) for detecting the angular displacement with the help of numerical simulations. The CDR is made bisymmetric by attaching a metal strip diametrically on its top-face to enable angular sensing in the range of 0 − 90°. The CDR is coupled to a single microstrip line for reflection mode measurement, while it is coupled to two microstrip lines for transmission mode measurement. Identically in both the configurations, the CDR resonates at the HEM11δ mode frequency of ≈3.5 GHz, with the magnitude of the respective S-parameters varying with the strip angle. The CDR configurations provide nearly identical sensitivities and quasi-linear ranges of ≈0.26 dB/°, and 70° respectively for the reflection mode, while ≈0.3 dB/° and 60° respectively for the transmission mode operation.
{"title":"Application of a Cylindrical Dielectric Resonator as an Angular Displacement Sensor","authors":"Premsai Regalla, A. Kumar","doi":"10.1109/APSYM50265.2020.9350681","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350681","url":null,"abstract":"Authors investigate the application of a cylindrical dielectric resonator (CDR) for detecting the angular displacement with the help of numerical simulations. The CDR is made bisymmetric by attaching a metal strip diametrically on its top-face to enable angular sensing in the range of 0 − 90°. The CDR is coupled to a single microstrip line for reflection mode measurement, while it is coupled to two microstrip lines for transmission mode measurement. Identically in both the configurations, the CDR resonates at the HEM11δ mode frequency of ≈3.5 GHz, with the magnitude of the respective S-parameters varying with the strip angle. The CDR configurations provide nearly identical sensitivities and quasi-linear ranges of ≈0.26 dB/°, and 70° respectively for the reflection mode, while ≈0.3 dB/° and 60° respectively for the transmission mode operation.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"11 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":"127978711","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/APSYM50265.2020.9350679
Shilpi Ruchi Kerketta, D. Ghosh
Globally, 200 million people are affected by osteoporosis which is a major bone metabolic disorder. In this paper, an investigation was conducted on the effects of the close proximity of the human body phantom on the performance of the antenna. Furthermore, a pair of monopole antennas with the help of a vector network analyzer (VNA) was used to measure the change in relative attenuation of the microwave signal when passed through the bone with different mass densities. Here animal bones were used as a sample and the skin phantom mimic was also fabricated to observe the effects of skin.
{"title":"Microwave Analysis on Bone Mineral Density","authors":"Shilpi Ruchi Kerketta, D. Ghosh","doi":"10.1109/APSYM50265.2020.9350679","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350679","url":null,"abstract":"Globally, 200 million people are affected by osteoporosis which is a major bone metabolic disorder. In this paper, an investigation was conducted on the effects of the close proximity of the human body phantom on the performance of the antenna. Furthermore, a pair of monopole antennas with the help of a vector network analyzer (VNA) was used to measure the change in relative attenuation of the microwave signal when passed through the bone with different mass densities. Here animal bones were used as a sample and the skin phantom mimic was also fabricated to observe the effects of skin.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"82 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":"126244012","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/APSYM50265.2020.9350712
T. A. Nisamol, P. Abdulla, P. M. Raphika, P. M. Jasmine, T. Rekha
This work presents highly suppressed microstrip lowpass filter design having prolonged stopband width up to 38 GHz. The 14th harmonics rejection is also accomplished using the multi resonator structure. The LC equivalent circuit of the proposed filter is developed as per the the tuning of the first transmission zero. The high performance multi resonator filter circuit is designed for S- band communication applications.
{"title":"35 GHz Prolonged Stopband Lowpass Filter using Multi-Resonator Structure","authors":"T. A. Nisamol, P. Abdulla, P. M. Raphika, P. M. Jasmine, T. Rekha","doi":"10.1109/APSYM50265.2020.9350712","DOIUrl":"https://doi.org/10.1109/APSYM50265.2020.9350712","url":null,"abstract":"This work presents highly suppressed microstrip lowpass filter design having prolonged stopband width up to 38 GHz. The 14th harmonics rejection is also accomplished using the multi resonator structure. The LC equivalent circuit of the proposed filter is developed as per the the tuning of the first transmission zero. The high performance multi resonator filter circuit is designed for S- band communication applications.","PeriodicalId":325720,"journal":{"name":"2020 International Symposium on Antennas & Propagation (APSYM)","volume":"1 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":"122312011","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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