Pub Date : 2020-08-01DOI: 10.1109/UCET51115.2020.9205426
Yuanjie Xia, H. Heidari, R. Ghannam
This paper aim to design a smart wristband for gesture recognition. Tendon movements around the wrist were measured by FSR sensors as input variables to classify different gestures. Polydimethylsiloxane material (PDMS) was applied to encapsulate FSR sensors, so that the wristband is flexible and suitable for people with different wrist sizes. Subsequently, the sensor data was transmitted to the computer via Bluetooth low energy (BLE) technology. MATLAB was used to train a classifier with ensemble subspace discrimination algorithm. After that, the received signal was processed by this trained classifier and made prediction. The accuracy is about 99.4%. Additionally, the paper explored how predict accuracy would be impacted when twisting the wrist. The result showed that a gesture in different angles was classified as different gestures. Overall, the wristband is rechargeable, portable and can accurately recognize over 6 gestures.
{"title":"Smart Wristband for Gesture Recognition","authors":"Yuanjie Xia, H. Heidari, R. Ghannam","doi":"10.1109/UCET51115.2020.9205426","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205426","url":null,"abstract":"This paper aim to design a smart wristband for gesture recognition. Tendon movements around the wrist were measured by FSR sensors as input variables to classify different gestures. Polydimethylsiloxane material (PDMS) was applied to encapsulate FSR sensors, so that the wristband is flexible and suitable for people with different wrist sizes. Subsequently, the sensor data was transmitted to the computer via Bluetooth low energy (BLE) technology. MATLAB was used to train a classifier with ensemble subspace discrimination algorithm. After that, the received signal was processed by this trained classifier and made prediction. The accuracy is about 99.4%. Additionally, the paper explored how predict accuracy would be impacted when twisting the wrist. The result showed that a gesture in different angles was classified as different gestures. Overall, the wristband is rechargeable, portable and can accurately recognize over 6 gestures.","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"43 20","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113974663","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 : 2020-08-01DOI: 10.1109/UCET51115.2020.9205367
I. G. Mbomson, R. Rue, S. McMeekin, N. Johnson
In comparison with electromagnetic radiation at shorter wavelengths, infrared radiation is non-destructive for many organic molecules. Previous research has established the resonant behaviour of various nanostructures designed to operate in the mid-infrared region and observe the resonant behaviour of organic molecules, with applications in areas such as security screening, the environment and medicine. This paper considers some of the important features of a particular asymmetric nanostructure that is useful for such purposes. In addition, the paper will show how plasmon resonance hybridization can describe the resonance energy levels in asymmetric split ring resonators (A-SRRs).
{"title":"Hybrid Asymmetric Nanostructures for the Mid-Infrared","authors":"I. G. Mbomson, R. Rue, S. McMeekin, N. Johnson","doi":"10.1109/UCET51115.2020.9205367","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205367","url":null,"abstract":"In comparison with electromagnetic radiation at shorter wavelengths, infrared radiation is non-destructive for many organic molecules. Previous research has established the resonant behaviour of various nanostructures designed to operate in the mid-infrared region and observe the resonant behaviour of organic molecules, with applications in areas such as security screening, the environment and medicine. This paper considers some of the important features of a particular asymmetric nanostructure that is useful for such purposes. In addition, the paper will show how plasmon resonance hybridization can describe the resonance energy levels in asymmetric split ring resonators (A-SRRs).","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122638167","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 : 2020-08-01DOI: 10.1109/UCET51115.2020.9205361
Shahid Latif, Zeba Idrees, Z. Zou, Jawad Ahmad
Industrial Internet of Things (IIoT) has arisen as an emerging trend in the industrial sector. Millions of sensors present in IIoT networks generate a massive amount of data that can open the doors for several cyber-attacks. An intrusion detection system (IDS) monitors real-time internet traffic and identify the behavior and type of network attacks. In this paper, we presented a deep random neural (DRaNN) based scheme for intrusion detection in IIoT. The proposed scheme is evaluated by using a new generation IIoT security dataset UNSW-NB15. Experimental results prove that the proposed model successfully classified nine different types of attacks with a low false-positive rate and great accuracy of 99.54%. To validate the feasibility of the proposed scheme, experimental results are also compared with state-of-the-art deep learning-based intrusion detection schemes. The proposed model achieved a higher attack detection rate of 99.41%.
{"title":"DRaNN: A Deep Random Neural Network Model for Intrusion Detection in Industrial IoT","authors":"Shahid Latif, Zeba Idrees, Z. Zou, Jawad Ahmad","doi":"10.1109/UCET51115.2020.9205361","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205361","url":null,"abstract":"Industrial Internet of Things (IIoT) has arisen as an emerging trend in the industrial sector. Millions of sensors present in IIoT networks generate a massive amount of data that can open the doors for several cyber-attacks. An intrusion detection system (IDS) monitors real-time internet traffic and identify the behavior and type of network attacks. In this paper, we presented a deep random neural (DRaNN) based scheme for intrusion detection in IIoT. The proposed scheme is evaluated by using a new generation IIoT security dataset UNSW-NB15. Experimental results prove that the proposed model successfully classified nine different types of attacks with a low false-positive rate and great accuracy of 99.54%. To validate the feasibility of the proposed scheme, experimental results are also compared with state-of-the-art deep learning-based intrusion detection schemes. The proposed model achieved a higher attack detection rate of 99.41%.","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127826391","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 : 2020-08-01DOI: 10.1109/UCET51115.2020.9205420
Salah Berra, M. Albreem, M. Abed
In massive multiple-input multiple-output (MIMO), the base-station (BS) is equipped with tens or hundreds of antennas to serve many users. The demand for a low complexity precoding algorithm is significantly increased. Linear precoding schemes, such as zero-forcing (ZF), are capable to obtain a quasi-optimum performance when a favourable channel propagation occurs in downlink massive (MIMO) systems. Particularly, conventional linear precoding techniques require to calculate a matrix inverse which increases the expenses of computational complexity. In this paper, a low complexity linear precoder based on a hybrid acceleration overrelaxation (AOR) method is proposed. The optimal relaxation, acceleration parameters, and the initial solution are selected to achieve an attractive balance between the performance and the computational complexity. Numerical results show that the proposed algorithm has greatly reduced the complexity from $mathcal{O}(K^{3})$ to $mathcal{O}(K^{2})$ (where K is the number of users). It also outperforms the up-to-date algorithms.
{"title":"A Low Complexity Linear Precoding Method for Massive MIMO","authors":"Salah Berra, M. Albreem, M. Abed","doi":"10.1109/UCET51115.2020.9205420","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205420","url":null,"abstract":"In massive multiple-input multiple-output (MIMO), the base-station (BS) is equipped with tens or hundreds of antennas to serve many users. The demand for a low complexity precoding algorithm is significantly increased. Linear precoding schemes, such as zero-forcing (ZF), are capable to obtain a quasi-optimum performance when a favourable channel propagation occurs in downlink massive (MIMO) systems. Particularly, conventional linear precoding techniques require to calculate a matrix inverse which increases the expenses of computational complexity. In this paper, a low complexity linear precoder based on a hybrid acceleration overrelaxation (AOR) method is proposed. The optimal relaxation, acceleration parameters, and the initial solution are selected to achieve an attractive balance between the performance and the computational complexity. Numerical results show that the proposed algorithm has greatly reduced the complexity from $mathcal{O}(K^{3})$ to $mathcal{O}(K^{2})$ (where K is the number of users). It also outperforms the up-to-date algorithms.","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125607151","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 : 2020-08-01DOI: 10.1109/UCET51115.2020.9205356
Muhammad Umaid Bukhari, M. Sajid, M. Q. Mehmood, M. Zubair, K. Riaz
Triboelectric nanogenerators (TENGs) have been introduced as a rational and effective way of powering the low consuming electronic devices and sensors. Mostly these nanogenerators are manufactured using costly materials and complex fabrication processes that restrict their usage especially in developing countries. In this paper, we have presented an inexpensive and facile TENG for powering the environmental sensor. Readily available and cost-effective materials were used for manufacturing TENG like paper, thread sealant PTFE tape, and pencil. The manufactured paper based TENG produced short circuit current and open circuit voltage of $110 mu mathrm{A}$ and 234 V respectively. The maximum power density of $96.22 mu mathrm{W} /$ cm2 was achieved at 5 M $Omega$. The rectified signal from TENG was used to charge a capacitor array of $300 mu mathrm{F}$ which was successively used to power the environmental sensor. Temperature and humidity can be measured by powering the environmental sensor with the help of the proposed TENG. This facile and cost-effective TENG can be easily manufactured and deployed in resource limited environment for self-powered sensing systems.
摩擦纳米发电机(TENGs)作为一种合理而有效的低功耗电子器件和传感器供电方式被引入。这些纳米发电机大多是使用昂贵的材料和复杂的制造工艺制造的，这限制了它们的使用，特别是在发展中国家。在本文中，我们提出了一种廉价和方便的TENG为环境传感器供电。制造TENG所用的材料包括纸张、螺纹密封剂、聚四氟乙烯胶带和铅笔。纸制TENG的短路电流和开路电压分别为$110 mu mathrm{A}$和234v。在5 M处达到$96.22 mu mathrm{W} /$ cm2的最大功率密度$Omega$。来自TENG的整流信号用于给$300 mu mathrm{F}$电容器阵列充电，该电容器阵列依次用于为环境传感器供电。温度和湿度可以通过在提出的TENG的帮助下为环境传感器供电来测量。这种简易和经济高效的TENG可以很容易地制造和部署在资源有限的环境中用于自供电传感系统。
{"title":"Facile and Cost Effective Paper Based Triboelectric Nanogenerators for Self Powered Environmental Sensing System","authors":"Muhammad Umaid Bukhari, M. Sajid, M. Q. Mehmood, M. Zubair, K. Riaz","doi":"10.1109/UCET51115.2020.9205356","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205356","url":null,"abstract":"Triboelectric nanogenerators (TENGs) have been introduced as a rational and effective way of powering the low consuming electronic devices and sensors. Mostly these nanogenerators are manufactured using costly materials and complex fabrication processes that restrict their usage especially in developing countries. In this paper, we have presented an inexpensive and facile TENG for powering the environmental sensor. Readily available and cost-effective materials were used for manufacturing TENG like paper, thread sealant PTFE tape, and pencil. The manufactured paper based TENG produced short circuit current and open circuit voltage of $110 mu mathrm{A}$ and 234 V respectively. The maximum power density of $96.22 mu mathrm{W} /$ cm2 was achieved at 5 M $Omega$. The rectified signal from TENG was used to charge a capacitor array of $300 mu mathrm{F}$ which was successively used to power the environmental sensor. Temperature and humidity can be measured by powering the environmental sensor with the help of the proposed TENG. This facile and cost-effective TENG can be easily manufactured and deployed in resource limited environment for self-powered sensing systems.","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131631012","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 : 2020-08-01DOI: 10.1109/UCET51115.2020.9205380
A. F. M. Fazilah, M. Jusoh, T. Sabapathy, Q. Abbasi, K. Hossain, H. Rahim, M. Yasin, M. N. Osman, M. Kamarudin, H. Majid, P. Soh
This paper presents a miniaturized UHF RFID tag antenna with increased gain using meander line techniques and metamaterial (MTM). The designed tag operates in the UHF RFID frequency band ranging from 860 to 960 MHz. It comprises of meandered lines with two hexagonal split ring resonators (H-SRRs) MTM cells. It is designed on a photo paper as its substrate which is 0.27 mm thick, with a dielectric constant of 3.2 and loss tangent of 0.05. Next, an RFID tag (NXP SL381213 UCODE G2iL chip) with an impedance of 23-j224 $Omega$ is integrated with the proposed antenna to assess its performance in terms of reflection coefficient, antenna gain and maximum reading range. The overall size of the tag is 92 mm x26 mm.
{"title":"A Flexible and Compact Metamaterial UHF RID Tag for Remote Sensing in Human Health","authors":"A. F. M. Fazilah, M. Jusoh, T. Sabapathy, Q. Abbasi, K. Hossain, H. Rahim, M. Yasin, M. N. Osman, M. Kamarudin, H. Majid, P. Soh","doi":"10.1109/UCET51115.2020.9205380","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205380","url":null,"abstract":"This paper presents a miniaturized UHF RFID tag antenna with increased gain using meander line techniques and metamaterial (MTM). The designed tag operates in the UHF RFID frequency band ranging from 860 to 960 MHz. It comprises of meandered lines with two hexagonal split ring resonators (H-SRRs) MTM cells. It is designed on a photo paper as its substrate which is 0.27 mm thick, with a dielectric constant of 3.2 and loss tangent of 0.05. Next, an RFID tag (NXP SL381213 UCODE G2iL chip) with an impedance of 23-j224 $Omega$ is integrated with the proposed antenna to assess its performance in terms of reflection coefficient, antenna gain and maximum reading range. The overall size of the tag is 92 mm x26 mm.","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132423833","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 : 2020-08-01DOI: 10.1109/UCET51115.2020.9205423
Jasmine Zidan, Osama Alluhaibi, E. I. Adegoke, E. Kampert, M. Higgins, Col R. Ford
In urban canyons, the positioning accuracy obtainable from global navigation satellite systems (GNSS) is mainly impaired by signal interference due to multipath and non-lineof-sight (NLOS) effects. GNSS is one of the sensors used in connected autonomous vehicles (CAVs) for positioning, navigation and timing (PNT). Hence, it is essential that GNSS receivers in CAVs are robust and resilient. In this paper, a method consisting of two layers of GNSS observation checks is suggested to exclude these effects in order to improve the positioning accuracy. The first layer excludes all non-consistent measurements identified by a chi-square test threshold. The second layer uses a decision tree for the exclusion of any remaining multipath/NLOS affected measurements, based on a data set obtained from a ray tracer for a 3D mapped model environment. The simulation results show an enhancement in positioning accuracy greater than 95%.
{"title":"3D Mapping Methods and Consistency Checks to Exclude GNSS Multipath/NLOS Effects","authors":"Jasmine Zidan, Osama Alluhaibi, E. I. Adegoke, E. Kampert, M. Higgins, Col R. Ford","doi":"10.1109/UCET51115.2020.9205423","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205423","url":null,"abstract":"In urban canyons, the positioning accuracy obtainable from global navigation satellite systems (GNSS) is mainly impaired by signal interference due to multipath and non-lineof-sight (NLOS) effects. GNSS is one of the sensors used in connected autonomous vehicles (CAVs) for positioning, navigation and timing (PNT). Hence, it is essential that GNSS receivers in CAVs are robust and resilient. In this paper, a method consisting of two layers of GNSS observation checks is suggested to exclude these effects in order to improve the positioning accuracy. The first layer excludes all non-consistent measurements identified by a chi-square test threshold. The second layer uses a decision tree for the exclusion of any remaining multipath/NLOS affected measurements, based on a data set obtained from a ray tracer for a 3D mapped model environment. The simulation results show an enhancement in positioning accuracy greater than 95%.","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133948116","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 : 2020-08-01DOI: 10.1109/UCET51115.2020.9205445
Sia M. L. Andersson, L. Hou, J. Marsh, C. D. Farmer
Many laser applications in quantum technology require circularly polarized light at wavelengths accessible only through the GaAs-AlGaAs material system. Two proven designs of polarization mode convertor (PMC) were compared through simulation for a modified commercial 830 nm GaAs-AlGaAs structure. Structure type 1 used a deep-etched ridge waveguide, with a shallow-etched slot placed asymmetrically within the ridge. Structure type 2 also used a deep-etched ridge, but with sides of the ridge etched to different depths. Both structures support zero-order TE and TM modes, with the effective index difference between the modes determining the length of the PMC device. Although a range of dimensions and compositions was investigated, it was found the geometry of the waveguides did not significantly affect the effective index difference. The refractive index of the waveguide core was swept from 3.39 to 3.43, corresponding to Al contents from 0.45 to 0.3 respectively. In both structures, a higher index leads to the mode being concentrated in the core, which may lead to lower losses. As the structures give similar results, the main decider as to which one should be chosen should be the relative simplicity of fabrication.
{"title":"Comparison of Cross-section Profile Designs for Integrated Polarization Mode Controllers","authors":"Sia M. L. Andersson, L. Hou, J. Marsh, C. D. Farmer","doi":"10.1109/UCET51115.2020.9205445","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205445","url":null,"abstract":"Many laser applications in quantum technology require circularly polarized light at wavelengths accessible only through the GaAs-AlGaAs material system. Two proven designs of polarization mode convertor (PMC) were compared through simulation for a modified commercial 830 nm GaAs-AlGaAs structure. Structure type 1 used a deep-etched ridge waveguide, with a shallow-etched slot placed asymmetrically within the ridge. Structure type 2 also used a deep-etched ridge, but with sides of the ridge etched to different depths. Both structures support zero-order TE and TM modes, with the effective index difference between the modes determining the length of the PMC device. Although a range of dimensions and compositions was investigated, it was found the geometry of the waveguides did not significantly affect the effective index difference. The refractive index of the waveguide core was swept from 3.39 to 3.43, corresponding to Al contents from 0.45 to 0.3 respectively. In both structures, a higher index leads to the mode being concentrated in the core, which may lead to lower losses. As the structures give similar results, the main decider as to which one should be chosen should be the relative simplicity of fabrication.","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117301563","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 : 2020-08-01DOI: 10.1109/UCET51115.2020.9205382
J. Kazim, M. Rehman, Mu’ath Al-Hasan, I. Mabrouk, M. Imran, Q. Abbasi
This paper proposes a novel 1-bit, electronically reconfigurable, subwavelength metasurface unit cell for sub-6 GHz applications. 180° phase shift is achieved by integrating a single PIN diode in the structure. The unit cell incorporates three layers: The top layer is used for wave reflection, the bottom layer is used for PIN diode placement and DC biasing, and the middle layer acts as a ground plane. The resonance of the unit cell is kept around 3.3 GHz. The magnitude of the reflection coefficient is above 90%. Besides, a phase difference of 180°+20° is achieved over 200 MHz bandwidth. With these characteristics, the proposed unit cell can find its applications in programmable metasurface functions such as beam steering, beam focusing and beam scattering.
{"title":"Design of 1-Bit Digital Subwavelength Metasurface Element for Sub-6 GHz Applications","authors":"J. Kazim, M. Rehman, Mu’ath Al-Hasan, I. Mabrouk, M. Imran, Q. Abbasi","doi":"10.1109/UCET51115.2020.9205382","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205382","url":null,"abstract":"This paper proposes a novel 1-bit, electronically reconfigurable, subwavelength metasurface unit cell for sub-6 GHz applications. 180° phase shift is achieved by integrating a single PIN diode in the structure. The unit cell incorporates three layers: The top layer is used for wave reflection, the bottom layer is used for PIN diode placement and DC biasing, and the middle layer acts as a ground plane. The resonance of the unit cell is kept around 3.3 GHz. The magnitude of the reflection coefficient is above 90%. Besides, a phase difference of 180°+20° is achieved over 200 MHz bandwidth. With these characteristics, the proposed unit cell can find its applications in programmable metasurface functions such as beam steering, beam focusing and beam scattering.","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121072774","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 : 2020-08-01DOI: 10.1109/UCET51115.2020.9205483
S. M. A. Shah, Fahad Ahmed, N. Shoaib
A miniaturized frequency selective surface having band-stop characteristics is presented. The proposed FSS is modeled on Rogers RO4350 substrate having unit cell dimensions of 6.75 mm x 6.75 mm. It attains at least 49.43 dB attenuation within the frequency band of 17.88 GHz to 26.72 GHz (i.e., fractional bandwidth 39.64%) to provide effective electromagnetic interference (EMI) shielding. The single layer structure also gives identical results for both incident transverse-electric and transverse-magnetic fields. The size compactness, wide-band operation and simple structure make this FSS a potential candidate for EMI shielding applications in K-band.
提出了一种具有带阻特性的小型化频率选择表面。所提出的FSS在罗杰斯RO4350基板上建模，其单元尺寸为6.75 mm x 6.75 mm。在17.88 GHz至26.72 GHz频段(即分数带宽39.64%)内，衰减至少达到49.43 dB，提供有效的电磁干扰屏蔽。单层结构对于入射的横向电场和横向磁场也给出了相同的结果。尺寸紧凑，宽频带工作和简单的结构使该FSS成为k波段EMI屏蔽应用的潜在候选者。
{"title":"A Miniaturized FSS Based Band-Stop Filter for EMI Shielding Applications","authors":"S. M. A. Shah, Fahad Ahmed, N. Shoaib","doi":"10.1109/UCET51115.2020.9205483","DOIUrl":"https://doi.org/10.1109/UCET51115.2020.9205483","url":null,"abstract":"A miniaturized frequency selective surface having band-stop characteristics is presented. The proposed FSS is modeled on Rogers RO4350 substrate having unit cell dimensions of 6.75 mm x 6.75 mm. It attains at least 49.43 dB attenuation within the frequency band of 17.88 GHz to 26.72 GHz (i.e., fractional bandwidth 39.64%) to provide effective electromagnetic interference (EMI) shielding. The single layer structure also gives identical results for both incident transverse-electric and transverse-magnetic fields. The size compactness, wide-band operation and simple structure make this FSS a potential candidate for EMI shielding applications in K-band.","PeriodicalId":163493,"journal":{"name":"2020 International Conference on UK-China Emerging Technologies (UCET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125185708","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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