2022 39th National Radio Science Conference (NRSC)最新文献

{"title":"Towards IoT Era with current and Future Wireless Communication Technologies: An Overview","authors":"R. Sadek, H. Elbadawy","doi":"10.1109/NRSC57219.2022.9971196","DOIUrl":"https://doi.org/10.1109/NRSC57219.2022.9971196","url":null,"abstract":"IoT boosts industry productivity and efficiency by judiciously combining sensors and actuators with computing platforms via different means of communications technologies to get data gathering and analytics. IoT system design essentially requires considering data transmission reliability. This paper presents a review of the commonly used communication means in current and future Internet of Things (IoT) applications. The Paper will also cover technologies, data and communication protocols and their common application domains. Wireless technologies are growing in a way to provide wide efficient challenging IoT-based applications. actively all around the world. 5G and 6G wireless technologies with satellite integration wireless open a new era of IoT. A brief overview of reliability metrics; resource allocation and latency management which are crucial for maintaining a reliable IoT application, is also given. The main required procedure required for designing an IoT system is provided. This paper paves the way for establishing a standard way to design an efficient IoT system for a certain application. All these issues will provide light on a few crucial open research issues for a reliable IoT that requires additional research, including those relating to machine learning methods, 6G communications, blockchain-based security, SDN and Computing and quantum communication technologies.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123086493","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}

{"title":"Reconfigurable Intelligent Surfaces For Wireless Communications","authors":"S. Zainud-Deen","doi":"10.1109/nrsc57219.2022.9971201","DOIUrl":"https://doi.org/10.1109/nrsc57219.2022.9971201","url":null,"abstract":"Reconfigurable Intelligent surface (RIS) is a programmable structure that can be used to control the propagation of electromagnetic waves by changing the electric and magnetic properties of the surface. RIS can customize the radio propagation environments by reconfiguring the phase and amplitude of the incident signals. RIS is a thin surface composed of N elements, each being a reconfigurable scatter: a small antenna receives and re-radiates without amplification, but with a configurable time-delay. RISs are made of passive or active metamaterials. The active metamaterial may be tunable metamaterial by changing the bias voltages of the varactor or PIN diodes, reconfigurable metamaterial using plasma, graphene, vanadium dioxide (VO2) materials and space-time-coding digital metamaterial with the aid of field programmable gate array (FPGA). RIS can be categorized into three types: 1. Reflector type: the RIS only reflects incident signals towards the users on the same side of the base station (BS). 2. Transmissive type: the incident signal will penetrate the RIS and be transmitted towards users on the opposite side of the BS. 3. Hybrid type: the incident signals will be spitted into two parts: one part is transmitted and the other is reflected. The RIS is mainly considered to be a beyond 5G technology operating at frequencies from tens of Gigahertz’s (GHz) to Terahertz’s (THz). At these frequency bands, the signal propagation is heavily attenuated and be blocked completely by the obstacles in the propagation environment. RIS can be made in different shapes, including but not limited to building facades, indoor walls and road bill boards, Typical applications of RIS, can be categorized into two types: 1, wireless communication, RIS can improve the spectrum efficiency, coverage extension and energy efficiency. 2. RF sensing, RIS has a wide range of applications in improving security, smart space, safety and the communication reliability of wireless networks. This talk will be focused on the different RIS types and presented the most recent research activities at FEE Antenna Research Group in Faculty of Electronic Engineering, Menoufia University, Egypt in this topic.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115652363","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}

{"title":"High-Efficiency Single-Layer Planar Ultra-Wideband Antenna","authors":"R. Elsharkawy, K. Hussein, A. E. Farahat","doi":"10.1109/NRSC57219.2022.9971319","DOIUrl":"https://doi.org/10.1109/NRSC57219.2022.9971319","url":null,"abstract":"A low profile, single layer, light weight ultra-wide band (UWB) antenna is introduced in this work. The design method depends on a main (primary) printed patch capacitively coupled to secondary parasitic patches. The whole design dimensions are 35 × 39.4 × 0.5 mm. The main patch is fed with coplanar waveguide (CPW). The main patch is constructed as a perforated circle with four quarter-circle sector holes over a roger RO3003 substrate with real permittivity εr = 3 and height h = 05m 0.5 mm. The parasitic elements are six equal small circles coupled to the primary patch through a gap. The whole antenna structure and the CPW feed line are printed on the same side of the substrate and the other side has no conductor (no ground plane). The antenna is fabricated and its parameters are measured experimentally. The reflection coefficient, radiation pattern and radiation efficiency are measured within the antenna operating band 2.9 –10.7 GHz. The measurements and the electromagnetic simulations are compared showing good agreement.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122531690","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}

{"title":"Design and Development of Perfect Dual-band Metamaterial Absorber Array to Enhance the Efficiency of Solar Energy Harvesting in Infrared Radiation","authors":"A. S. Mohammed, A. Shohdy, S. Mohammed, A. Montaser","doi":"10.1109/NRSC57219.2022.9971176","DOIUrl":"https://doi.org/10.1109/NRSC57219.2022.9971176","url":null,"abstract":"In this research, a proposed metamaterial absorber is designed and developed to enhance the solar cells’ efficiency. The design consists of circular shapes with rectangular gaps printed at the top surface, and copper sheet as a ground. The structure operated at terra frequency bands, to absorb all range infrared from the solar spectrum. Moreover, the designed metamaterial unit cell is used to develop a metamaterial array absorber, for increasing the rate of the energy harvesting from the solar spectrum. The effect of the rectangular gap on the absorber performance is studied and the optimum value is found at 100 nm. The results revealed two absorption rates: approximately 99.98% at resonance frequency 80.2, and 99.32% at 68.35 THz for both designs.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124095732","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}

{"title":"MEMS-SOA Tunable Optoelectronic Oscillator","authors":"H. Kotb, Y. Sabry, M. Abdallah, H. Omran","doi":"10.1109/NRSC57219.2022.9971320","DOIUrl":"https://doi.org/10.1109/NRSC57219.2022.9971320","url":null,"abstract":"We present a microelectromechanical system (MEMS) based tunable optoelectronic oscillator. The tunability of the frequency is accomplished by changing the free spectral range of MEMS-semiconductor optical amplifier (SOA) sliced broadband optical source in a microwave photonic filter configuration. Tuning range of 1.5 GHz is demonstrated, where the limitation is set by the electrical amplifier bandwidth. The phase noise at a frequency offset of 10 kHz is below 81 dBc/Hz while the side mode noise is measure around −52.37 dBc/Hz. The center wavelength and tuning range can be adapted to larger frequency ranges.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134153797","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}

{"title":"Quantized Reconfigurable plasma-based Reflectarray Antenna","authors":"Esraa A. El-Refay, H. Malhat, S. Zainud-Deen, M. M. Badawy","doi":"10.1109/NRSC57219.2022.9971414","DOIUrl":"https://doi.org/10.1109/NRSC57219.2022.9971414","url":null,"abstract":"This paper investigates the phase-quantization effects on the performance of the reconfigurable plasma reflectarray antenna including half-power beamwidth (HPBW), sidelobe level (SLL) and gain. The quantized reconfigurable reflectarray (QRRA) consists of 169 unit-cell elements arranged in a planar structure. The phase distribution of the reflection-coefficients for the array are controlled by changing the applied voltage of the plasma material. The effect of phase-quantization on the radiation pattern of QRRA is presented. Different quantized cases 1-bit, 2-bits and 3-bits are considered. The performance of the K-bits quantized reflectarray antenna is compared with that of continues phase reflectarray antenna. The gain-loss due to phase-quantization is explained for different quantization states.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130652130","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}

{"title":"Bi-Directional EBG for 4 × 4 Longitudinal and Lateral Mutual Coupling Reduction in MIMO Antennas for 5.8 GHz Applications","authors":"A. Abdelraheem, Mohamed F. El-Sewedy, Abdallah S. Yousef, Ibrahim S. Mohamed, A. Mahran, M. Abdalla","doi":"10.1109/NRSC57219.2022.9971203","DOIUrl":"https://doi.org/10.1109/NRSC57219.2022.9971203","url":null,"abstract":"This paper presents the process of reducing the mutual coupling in both longitudinal and lateral directions of 2 × 2 (MIMO) antenna systems for 5.8 GHz applications. For size reduction, a bilateral EM band gap structure is added to the ground which helps in reducing the edge-to-edge distance between neighboring antennas rather than placing it between antenna elements. The results from Electromagnetic simulation and experimental measurements are discussed. A comparison between the use of the bilateral EBG between antenna elements to the non-using of any of the cases. For longitudinal isolation, the spacing between two opposite elements is 0.07 λ0 and 11 dB isolation was achieved. For lateral isolation, the spacing between two elements is 0.5 λ0 and 8 dB isolation was achieved. A measured isolation improvement is 10 dB for longitudinal isolation and 15 dB for lateral isolation.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122583221","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}

{"title":"Study of Wireless Sensor Network Performance under Different Channel Fading Models","authors":"Asmaa El Beheiy, M. E. El Tokhy, I. Mahmoud, M. B. El Mashade","doi":"10.1109/NRSC57219.2022.9971394","DOIUrl":"https://doi.org/10.1109/NRSC57219.2022.9971394","url":null,"abstract":"This paper studies the influence of various environmental changes on transmitted signal between sensor nodes (SNs) within a wireless sensor network (WSN). The performance of network using bit error rate (BER) is considered under various channel fading effects. Hence, the relations for BER at different signal to noise ratio (SNR) are formulated under different channels based on distributions, namely: Rician, Rayleigh and Erlang. Thus, closed form expressions for BER analysis of WSN are derived under these channel fading distributions aided by Maple 7 environment. The derived closed form expressions results are compared with conventional channel model based on Nakagami-m distribution. The BER behavior is studied by changing the modulated signal parameters, such as spreading sequence length, M-ary signaling and bit duration. The obtained results confirm that channel based on Rayleigh distribution achieves lower BER at all SNR compared to other channel distributions (except at very low SNR, which is higher than Rician distribution-based model), while channel based on Nakagami distribution achieves lower BER at higher SNR only. It is observed that channels based on Rayleigh and Nakagami-m distributions give the lowest possible BER at higher SNR values, while the channels based on Erlang distribution have the highest BER at all SNR.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125061668","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}

{"title":"High Dimensional Noise and Power Optimization of a Three-Stage Amplifier with Feedforward Reversed Nested Miller Compensation","authors":"Khaled Yasseen, H. Omran","doi":"10.1109/NRSC57219.2022.9971276","DOIUrl":"https://doi.org/10.1109/NRSC57219.2022.9971276","url":null,"abstract":"The design and optimization of a three-stage operational transconductance amplifier are discussed in this paper. Reversed nested-Miller compensation with feedforward transconductance is used to satisfy the stability requirements. A systematic gm/ID-based procedure that uses pre-computed lookup tables is used to take all the circuit degrees of freedom into account and solve a high-dimensional non-linear optimization problem. Exact symbolic expressions are obtained by a symbolic solver for both the objectives and constraints. Two optimization problems are formulated: A single-objective optimization problem for minimizing the noise and a multi-objective optimization problem for minimizing both noise and power consumption. The proposed optimization flow is very fast and takes less than 20 s on a standard computer. Moreover, the design space is visualized using one million design points to illustrate the design trade-offs and the multi-objective Pareto-optimal front. The synthesis results are compared with Cadence Spectre simulation results showing very good agreement.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116075324","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}

{"title":"Customized AES for Securing Data in Sensitive Networks and Applications","authors":"A. H. Mahmoud, H. Issa, N. Shaker, K. Shehata","doi":"10.1109/NRSC57219.2022.9971420","DOIUrl":"https://doi.org/10.1109/NRSC57219.2022.9971420","url":null,"abstract":"Developing and improving encryption systems becomes a prerequisite for protecting sensitive data from ever-developing attacks. The Advanced Encryption Standard (AES) is the best recommended symmetric key block cipher for securing data of sensitive networks and applications. However, the AES may be penetrative to some attacks in the future. In this paper, we propose a customized AES to enhance the security of the AES algorithm to be hard to cryptanalysis and become safer to use in sensitive networks and applications whose security is of utmost priority, like military networks and applications. Security of customized AES will be improved by modification in two points; the first uses a new AES key expansion algorithm to remove dependencies between round keys and improve key expansion time, and the second point uses a key-dependent S-box for each round to overcome the problems caused by using a static AES S-box. Finally, results show that the Proposed AES provides a significant enhancement in security compared to the original AES.","PeriodicalId":156721,"journal":{"name":"2022 39th National Radio Science Conference (NRSC)","volume":"362 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134406084","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}