Pub Date : 2022-06-05DOI: 10.1109/WAMS54719.2022.9848355
Abhay Kumar, S. Srivastava
This paper presents an idea to form a low cost frequency reconfigurable patch antenna based on the temperature change. The use of PET (Polyethylene Terephthalate) material in the substrate gives the flexibility to form a low cost antenna that can work for a range of frequencies. The antenna is flexible and can be used as biological sensors. The use of transparent PET material can have several advantages in terms where transparency is required. The antenna is designed to resonate in K band region. Simple patch antenna is designed with a split ring slot in between to reduce the bandwidth and improve the selectivity, as well as sensitivity of the antenna suitable for controlled reconfigurability in the frequency. At room temperature, antenna resonates at 23.8 GHz, with a gain of 6.16dBi and radiation efficiency of 92.06%. As the temperature increases from room temperature to 100°C, the frequency shifted from 23.8 GHz to 22.66 GHz. Antenna shows a dual band characteristic with equivalent significance of temperature on both the frequency.
{"title":"Low Cost Temperature Controlled Frequency Reconfigurable Antenna with High Selectivity","authors":"Abhay Kumar, S. Srivastava","doi":"10.1109/WAMS54719.2022.9848355","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9848355","url":null,"abstract":"This paper presents an idea to form a low cost frequency reconfigurable patch antenna based on the temperature change. The use of PET (Polyethylene Terephthalate) material in the substrate gives the flexibility to form a low cost antenna that can work for a range of frequencies. The antenna is flexible and can be used as biological sensors. The use of transparent PET material can have several advantages in terms where transparency is required. The antenna is designed to resonate in K band region. Simple patch antenna is designed with a split ring slot in between to reduce the bandwidth and improve the selectivity, as well as sensitivity of the antenna suitable for controlled reconfigurability in the frequency. At room temperature, antenna resonates at 23.8 GHz, with a gain of 6.16dBi and radiation efficiency of 92.06%. As the temperature increases from room temperature to 100°C, the frequency shifted from 23.8 GHz to 22.66 GHz. Antenna shows a dual band characteristic with equivalent significance of temperature on both the frequency.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115157332","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 : 2022-06-05DOI: 10.1109/WAMS54719.2022.9847669
Gaurangi Gupta, A. Harish, Rajesh Chivukula
A Ku band dual linearly polarized low-profile meta-surface (MTS) radiator antenna has been proposed in this work. The patch is excited using an aperture coupled feed through the slots in a substrate integrated waveguide (SIW). For each polarization, the SIW cavity operates in the second order mode and the antenna is fed using two parallel slots placed close to the maximum E-field in SIW, resulting in a high gain better than 10.3 dBi. The antenna presents 16.9 % impedance bandwidth over a frequency band of 13.5 GHz to 16 GHz, corresponding to $vert mathrm{S}_{11}vert < -10 text{dB}$. The antenna is fed differentially using 180° hybrid coupler leading to cross polar levels lower than 25 dB and a port-to-port isolation better than 40 dB between the two polarization ports.
{"title":"High Gain Dual-Polarized Meta-surface Antenna","authors":"Gaurangi Gupta, A. Harish, Rajesh Chivukula","doi":"10.1109/WAMS54719.2022.9847669","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9847669","url":null,"abstract":"A Ku band dual linearly polarized low-profile meta-surface (MTS) radiator antenna has been proposed in this work. The patch is excited using an aperture coupled feed through the slots in a substrate integrated waveguide (SIW). For each polarization, the SIW cavity operates in the second order mode and the antenna is fed using two parallel slots placed close to the maximum E-field in SIW, resulting in a high gain better than 10.3 dBi. The antenna presents 16.9 % impedance bandwidth over a frequency band of 13.5 GHz to 16 GHz, corresponding to $vert mathrm{S}_{11}vert < -10 text{dB}$. The antenna is fed differentially using 180° hybrid coupler leading to cross polar levels lower than 25 dB and a port-to-port isolation better than 40 dB between the two polarization ports.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121102930","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 : 2022-06-05DOI: 10.1109/WAMS54719.2022.9848147
Sarosh Ahmad, Shuvra Barua, C. Vinoth, A. Akram, Bilal Manzoor
The goal of this study is to develop a compact type of printed monopole dual-band antenna with increased gain and bandwidth for usage in the industrial, scientific, and medical (ISM) band. The monopole antenna is made up of two C-shaped resonators connected by a U-shaped monopole, parasitic components, with ground circular rings, which are discrete in nature, and a co-planar waveguide (CPW) feedline. The total dimensions of the recommended ISM band antenna are $30times 14times 1.6 text{mm}^{3}$. This antenna featured bandwidths of 240 MHz at 2.45 GHz and 320 MHz at 5.8 GHz, with augmented gain values which were of 1.1 dB and 3.84 dB at the range of 2.45 GHz and 5.8 GHz, respectively. Consequently, the dual-band antenna recommended here is operating at a range of 2.45 GHz and 5.8 GHz industrial, scientific, and medical (ISM) bands.
{"title":"Design of a Dual-Band Printed Monopole Antenna for ISM Band Applications","authors":"Sarosh Ahmad, Shuvra Barua, C. Vinoth, A. Akram, Bilal Manzoor","doi":"10.1109/WAMS54719.2022.9848147","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9848147","url":null,"abstract":"The goal of this study is to develop a compact type of printed monopole dual-band antenna with increased gain and bandwidth for usage in the industrial, scientific, and medical (ISM) band. The monopole antenna is made up of two C-shaped resonators connected by a U-shaped monopole, parasitic components, with ground circular rings, which are discrete in nature, and a co-planar waveguide (CPW) feedline. The total dimensions of the recommended ISM band antenna are $30times 14times 1.6 text{mm}^{3}$. This antenna featured bandwidths of 240 MHz at 2.45 GHz and 320 MHz at 5.8 GHz, with augmented gain values which were of 1.1 dB and 3.84 dB at the range of 2.45 GHz and 5.8 GHz, respectively. Consequently, the dual-band antenna recommended here is operating at a range of 2.45 GHz and 5.8 GHz industrial, scientific, and medical (ISM) bands.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"09 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127228791","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 : 2022-06-05DOI: 10.1109/WAMS54719.2022.9848158
P. Prasad, S. Singh, Akhilesh Kumar
In this letter, we present a single substrate layer compact wide bandstop frequency selective surface (FSS) for the C, X, Ku, and K bands that is polarization insensitive and has higher angular stability upto 45 degrees. An optimized circular slot in a square patch is cut in the upper conductive layer, and diagonally cross dipoles in a square ring are placed in the lower conductive layer. With a fractional bandwidth of around 150%, this proposed layer provides wideband rejection across the entire band ranging from 3.5 GHz to 25 GHz. This structure is printed on both sides of a FR4 substrate using the smallest unit cell dimension possible ($0.064lambdatimes 0.064lambdatimes 0.009lambda$). In HFSS, a detailed parametric study for factors influencing FSS response was conducted. The compact configuration allows the planar bidirectional wideband antenna used for satellite communication, ground penetration, and astronomical purposes to be made unidirectional by reflecting waves radiated towards the FSS.
{"title":"An Optimized and Compact Bandstop FSS for C, X, Ku and K bands","authors":"P. Prasad, S. Singh, Akhilesh Kumar","doi":"10.1109/WAMS54719.2022.9848158","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9848158","url":null,"abstract":"In this letter, we present a single substrate layer compact wide bandstop frequency selective surface (FSS) for the C, X, Ku, and K bands that is polarization insensitive and has higher angular stability upto 45 degrees. An optimized circular slot in a square patch is cut in the upper conductive layer, and diagonally cross dipoles in a square ring are placed in the lower conductive layer. With a fractional bandwidth of around 150%, this proposed layer provides wideband rejection across the entire band ranging from 3.5 GHz to 25 GHz. This structure is printed on both sides of a FR4 substrate using the smallest unit cell dimension possible ($0.064lambdatimes 0.064lambdatimes 0.009lambda$). In HFSS, a detailed parametric study for factors influencing FSS response was conducted. The compact configuration allows the planar bidirectional wideband antenna used for satellite communication, ground penetration, and astronomical purposes to be made unidirectional by reflecting waves radiated towards the FSS.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126908446","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 : 2022-06-05DOI: 10.1109/WAMS54719.2022.9848245
A. Bhatta, C. Thompson, K. Chandra
This work investigates the scattering of spherical waves from a two-dimensional wedge with an external angle greater than 180 degrees and less than 360 degrees. The expression for the Green's function in the frequency and time domain is obtained for a wedge with Neumann's boundary conditions. The image-based representation of reflections is incorporated to obtain a modified response which is valid and not limited to the incident angle, frequency, and observation location. It will be shown that the image-based expression for exact scattering is the simplest form, consists of six terms and an integral for diffraction. In this study, the exact decay in amplitude and propagation delay of the reflected wave is explained. It is shown that one does not need stationary phase approximation to obtain the response in the asymptotic limits.
{"title":"Image-Based Solution for Scattering from a Wedge Satisfying Neumann Boundary Condition","authors":"A. Bhatta, C. Thompson, K. Chandra","doi":"10.1109/WAMS54719.2022.9848245","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9848245","url":null,"abstract":"This work investigates the scattering of spherical waves from a two-dimensional wedge with an external angle greater than 180 degrees and less than 360 degrees. The expression for the Green's function in the frequency and time domain is obtained for a wedge with Neumann's boundary conditions. The image-based representation of reflections is incorporated to obtain a modified response which is valid and not limited to the incident angle, frequency, and observation location. It will be shown that the image-based expression for exact scattering is the simplest form, consists of six terms and an integral for diffraction. In this study, the exact decay in amplitude and propagation delay of the reflected wave is explained. It is shown that one does not need stationary phase approximation to obtain the response in the asymptotic limits.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116458256","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 : 2022-06-05DOI: 10.1109/WAMS54719.2022.9847868
Vaddadi Sree Vamsi, Barsa Panda, K. Subhashini
This paper gives an idea about the design of a slotted circular patch Antenna for Wi-Fi 7 (IEEE 802. 11be) applications. The proposed antenna is operated at a frequency of 6.66 GHz with a realized gain of Rogers RT/Duroid 5880 substrate is considered with a dielectric constant ($varepsilon_{mathrm{r}}$) of 2.2, loss tangent 0.0009, and thickness of 5mm. From the analysis of simulation results, the proposed antenna is suitable for future Wi-Fi applications. The simulations are performed by using Ansys HFSS software.
{"title":"Design and Analysis of Slotted circular patch Antenna for Wi-Fi Applications","authors":"Vaddadi Sree Vamsi, Barsa Panda, K. Subhashini","doi":"10.1109/WAMS54719.2022.9847868","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9847868","url":null,"abstract":"This paper gives an idea about the design of a slotted circular patch Antenna for Wi-Fi 7 (IEEE 802. 11be) applications. The proposed antenna is operated at a frequency of 6.66 GHz with a realized gain of Rogers RT/Duroid 5880 substrate is considered with a dielectric constant ($varepsilon_{mathrm{r}}$) of 2.2, loss tangent 0.0009, and thickness of 5mm. From the analysis of simulation results, the proposed antenna is suitable for future Wi-Fi applications. The simulations are performed by using Ansys HFSS software.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122431249","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 : 2022-06-05DOI: 10.1109/WAMS54719.2022.9848407
M. Himaja, D. Mondal, S. Yuvaraj, M. V. Kartikeyan
A dual band compact MIMO (Multiple Input Multiple Output) antenna system is designed for the suited applications at S and C band. The designed antenna consists of two radiating elements with compact size of $45times 25 text{mm}^{2}$. The designed antenna has the return loss of $vertmathrm{S}_{11}vertleq-30 text{dB}$ at both of the resonant frequencies and to improve the isolation between the two elements defected ground structure is introduced. The simulated −10 dB impedance bandwidths are around 640 MHz (3.57 – 4.21 GHz), 750 MHz (6.29 – 7.04 GHz). In addition, the designed antenna has a VSWR value of ≤ 2 at the operating frequencies, and also has better diversity performance observed by low envelope correlation coefficient (ECC) and high diversity gain values.
{"title":"Design and Analysis of a Dual Band MIMO Antenna for Improved Isolation using the Defected Ground Structure","authors":"M. Himaja, D. Mondal, S. Yuvaraj, M. V. Kartikeyan","doi":"10.1109/WAMS54719.2022.9848407","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9848407","url":null,"abstract":"A dual band compact MIMO (Multiple Input Multiple Output) antenna system is designed for the suited applications at S and C band. The designed antenna consists of two radiating elements with compact size of $45times 25 text{mm}^{2}$. The designed antenna has the return loss of $vertmathrm{S}_{11}vertleq-30 text{dB}$ at both of the resonant frequencies and to improve the isolation between the two elements defected ground structure is introduced. The simulated −10 dB impedance bandwidths are around 640 MHz (3.57 – 4.21 GHz), 750 MHz (6.29 – 7.04 GHz). In addition, the designed antenna has a VSWR value of ≤ 2 at the operating frequencies, and also has better diversity performance observed by low envelope correlation coefficient (ECC) and high diversity gain values.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129041858","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 : 2022-06-05DOI: 10.1109/WAMS54719.2022.9848186
Sudhakar K. Rao, P. Venezia, Jonathan Scupin, C. Lee-Yow, Suzanna Lamar
Future protected communications require soldiers on the ground to carry several antennas to integrate with their man-packs to provide secure and reliable communications at several frequency bands. This paper describes a novel “petal-reflector” that combines four antennas into one using a quad-band antenna design. A dual-reflector antenna using axially displaced ellipsoid (ADE) sub-reflector fed with a wideband quad-ridged horn provided Ku-band transmit, Ku-band receive, K-band receive and Ka-band transmit frequencies using a high performance quadraplexer. The main reflector is made of six identical petals that can be quickly assembled and disassembled in the battle field. The antenna is assembled on a light-weight 2-axis gimbal to provide beam scanning over +/− 900 in elevation and 3600 in azimuth. The antenna / gimbal combination is then mounted on a tripod structure for field operations and uses commercial off the shelf (COTS) components and 3-D manufactured parts to minimize cost and weight. Details on the antenna design, analyses, hardware, integration and test results are presented.
{"title":"Quad-Band Petal Reflector Antenna for Ground Communications","authors":"Sudhakar K. Rao, P. Venezia, Jonathan Scupin, C. Lee-Yow, Suzanna Lamar","doi":"10.1109/WAMS54719.2022.9848186","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9848186","url":null,"abstract":"Future protected communications require soldiers on the ground to carry several antennas to integrate with their man-packs to provide secure and reliable communications at several frequency bands. This paper describes a novel “petal-reflector” that combines four antennas into one using a quad-band antenna design. A dual-reflector antenna using axially displaced ellipsoid (ADE) sub-reflector fed with a wideband quad-ridged horn provided Ku-band transmit, Ku-band receive, K-band receive and Ka-band transmit frequencies using a high performance quadraplexer. The main reflector is made of six identical petals that can be quickly assembled and disassembled in the battle field. The antenna is assembled on a light-weight 2-axis gimbal to provide beam scanning over +/− 900 in elevation and 3600 in azimuth. The antenna / gimbal combination is then mounted on a tripod structure for field operations and uses commercial off the shelf (COTS) components and 3-D manufactured parts to minimize cost and weight. Details on the antenna design, analyses, hardware, integration and test results are presented.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"102 2 Pt 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130341563","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 : 2022-06-05DOI: 10.1109/WAMS54719.2022.9847991
A. Thakur, D. Mondal, A. Singh, S. Yuvaraj, M. Rawat, M. Kartikeyan
The design aspects of all-metallic metamaterial slow-wave structure (SWS) of a multi-beam metamaterial-based backward-wave oscillator (MTMBWO) is investigated and simulated using CST microwave studio. A pair of split-ring resonators (SRRs) is periodically arranged in axial direction and repeated azimuthally in a cylindrical waveguide to confirm the double-negative metamaterial (DNM) region for RF wave propagation in the frequency regime of 3-4 GHz. The dispersion characteristics of the unit cell structure is analyzed. Furthermore, the particle in cell (PIC) simulation analysis of the complete SWS is discussed to investigate the backward-wave propagation and beam-wave interaction.
{"title":"Design Studies of Multi-Beam All-Metallic Metamaterial-Based Backward-Wave Oscillator","authors":"A. Thakur, D. Mondal, A. Singh, S. Yuvaraj, M. Rawat, M. Kartikeyan","doi":"10.1109/WAMS54719.2022.9847991","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9847991","url":null,"abstract":"The design aspects of all-metallic metamaterial slow-wave structure (SWS) of a multi-beam metamaterial-based backward-wave oscillator (MTMBWO) is investigated and simulated using CST microwave studio. A pair of split-ring resonators (SRRs) is periodically arranged in axial direction and repeated azimuthally in a cylindrical waveguide to confirm the double-negative metamaterial (DNM) region for RF wave propagation in the frequency regime of 3-4 GHz. The dispersion characteristics of the unit cell structure is analyzed. Furthermore, the particle in cell (PIC) simulation analysis of the complete SWS is discussed to investigate the backward-wave propagation and beam-wave interaction.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123821527","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 : 2022-06-05DOI: 10.1109/WAMS54719.2022.9847674
Neema K, Athira Manoharan, K. J. Vinoy, D. Das Krishna
Controlling the environment in a wireless communication system is difficult. But Re-configurable Intelligent Surfaces (RIS) paves a path for it by applying the concept of meta-surfaces. In this paper, we propose a means by which radio-frequency waves could be controlled electronically using a re-configurable meta-surface, which consist of 3 layers of metal over substrate. Each surface is an array of 8 cells and it is designed to operate in the 3-4 GHz. The ON and OFF state can be ideally achieved using any RF switches like PIN diodes. In this paper, the concept is proved using metal strips between the cells for ON and removing it for OFF state. In ON state, the meta-surface is designed to reflect the EM wave completely, just like a perfect metal. In OFF state, the waves in the designed frequency band passes through the structure. The simulation and measured results shows a 200 MHz transmission bandwidth. We have fabricated the designed meta-surface and verified the transmission and reflection properties in a S -band wave guide.
{"title":"Reconfigurable Intelligent Surface for Highly Efficient Electromagnetic Functionality","authors":"Neema K, Athira Manoharan, K. J. Vinoy, D. Das Krishna","doi":"10.1109/WAMS54719.2022.9847674","DOIUrl":"https://doi.org/10.1109/WAMS54719.2022.9847674","url":null,"abstract":"Controlling the environment in a wireless communication system is difficult. But Re-configurable Intelligent Surfaces (RIS) paves a path for it by applying the concept of meta-surfaces. In this paper, we propose a means by which radio-frequency waves could be controlled electronically using a re-configurable meta-surface, which consist of 3 layers of metal over substrate. Each surface is an array of 8 cells and it is designed to operate in the 3-4 GHz. The ON and OFF state can be ideally achieved using any RF switches like PIN diodes. In this paper, the concept is proved using metal strips between the cells for ON and removing it for OFF state. In ON state, the meta-surface is designed to reflect the EM wave completely, just like a perfect metal. In OFF state, the waves in the designed frequency band passes through the structure. The simulation and measured results shows a 200 MHz transmission bandwidth. We have fabricated the designed meta-surface and verified the transmission and reflection properties in a S -band wave guide.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123484621","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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