2023 40th National Radio Science Conference (NRSC)最新文献

{"title":"End Of Life Management Of Solar Panels","authors":"E. El-fayome, M. Abdelhamed, A. EL-Shazly, M. Abouelatta, A. Zekry","doi":"10.1109/NRSC58893.2023.10152958","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152958","url":null,"abstract":"The typical solar module has numerous drawbacks when used for extended periods of time in environmental conditions. Examples include cracked cells, interconnection failure, and decreasing output power. Also, it cannot be repaired; once a fault occurred in one cell, the module must be replaced. The proliferation of unused solar panels has become an issue due to the vast increase in the use of solar energy resources. While the current focus of solar panel research is to increase production energy efficiency, solar panel repairability and recycling of end of life (EOL) panels is rarely considered. The management of the EOL panels can efficiently save natural resources and save production costs. This study explores conventional encapsulation methods and introduces a novel approach to solar panel design that allows for easy access to individual components, facilitating repairs, upgrades, and modifications. The experimental study demonstrates that when using the novel encapsulation method, illumination current voltage properties are unaffected. Furthermore, a thermal analysis is conducted to compare the performance of the proposed module with the traditional module. It was found that, depending on illumination intensity and ambient temperature, the temperature of the cells inside our module is higher than the traditional by the range of 1K to 5.7K and decrease the power by (−0.65%/ K) of the PV module. However, the proposed method offers advantages in terms of reliability and reparability. In this paper, firstly, the solar system components are introduced. Secondly, proposed the types and resources of solar panel used in the components. Thirdly, proposed the causes of solar PV panel failure. Fourthly, proposed laminated solar panel recycling techniques. Finally, it's suggested a different method of solar module encapsulation to have a way to access and repair or alter any element.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"307 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116342080","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":"Multifunctional Plasmonic Tellurite Photonic Crystal Fiber Polarization Splitter At Telecommunication Wavelengths","authors":"E. Hagras, M. Hameed, A. Heikal, J. El-Azab, Adel M. El-Nozahi, S. Obayya","doi":"10.1109/NRSC58893.2023.10152926","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152926","url":null,"abstract":"In this paper, a compact, versatile multifunctional plasmonic Tellurite photonic crystal fiber polarization splitter (MF-PT-PCF) for the wavelengths 1.31 $mu m$ and 1.55 $mu m$ is reported. The proposed MF-PT-PCF splits the two polarized modes at the wavelengths 1.31 $mu m$ and 1.55 $mu m$ at the device length 131.0 $mu m$ by using the gold nanowire filled in the central hole as a plasmonic material and background material of ZnTe tellurite glass. Also, in order to increase the birefringence, nematic liquid crystal (NLC) is infiltrated in all holes in the proposed MF-PT- PCF. The finite element method is used for evaluation and analyzing the proposed device. The numerical results demonstrate that, at the wavelength of 1.31 $mu mathrm{m}$, the bandwidths of 58 nm for x-polarized mode and 48 nm for y-polarized mode can be achieved with crosstalks equal to -35 dB and -42 dB, for the two polarized modes, respectively. Additionally, the crosstalk for the two polarized modes at 1.55 $mu m$ are -45 dB with bandwidth of 124 nm and -43 dB with bandwidth of 88 nm, respectively.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130817738","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 Radiation Pattern of Yagi-Uda Array Based on Graphene Patch Sectors","authors":"Sarah I. Elgiddawy, H. Malhat, S. Zainud-Deen, Hisham Hamed, A. Ibrahim","doi":"10.1109/NRSC58893.2023.10152905","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152905","url":null,"abstract":"This research presents a reconfigurable Multi-Beam Directional of Yagi-Uda array for terahertz communications. The structure consists of planar dipole antenna surrounded by rows of metallic patches with graphene sector rings printed on silicon oxide substrate. Controlling the chemical potential of the graphene sectors switch, a single beam in two, four or eight directions. OFF-state $(mu_{c1}=0eV)$ acts as director and ON-state $(mu_{c2}=2eV)$ acts as reflector. A parametric study on the influence of adjusting the distance between the driven dipole and the patch sectors and the radius of the copper patches is studied. Adjusting of number of graphene sector rings on the the resonance frequency and peak gain has been investigated. It produces good impedance matching at 2.29 THz with peak gain of 8.19 dBi.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131280763","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":"3–6 Ghz Broadband High-efficiency Power Amplifier For Multi-standard Wireless Communication Systems","authors":"A. Sayed, M. Darwish, H. Ahmed","doi":"10.1109/NRSC58893.2023.10152914","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152914","url":null,"abstract":"This paper presents a design methodology for broadband, high-efficiency power amplifiers, suitable for octave bandwidth. Based on model-based de-embedding of the parasitics associated with packaged GaN-HEMT devices. To construct the input/output matching networks, and depending on the nodal quality factor, the parasitics are fully/partially absorbed in the matching networks, while the excess reactance is resonated out. To verify the proposed approach, a 7-W 3–6 GHz power amplifier is designed and implemented. An average drain efficiency and gain of 50% and 11-dB are achieved, respectively, across the operation bandwidth.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132517492","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":"Dual-beam Conformal Hologram Metasurface Leaky Wave Antenna Based On Surface Impedance Modulation","authors":"Nermeen A. Eltersy, H. Malhat, S. Zainud-Deen","doi":"10.1109/NRSC58893.2023.10152886","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152886","url":null,"abstract":"In this paper, a conformal holographic metasurface antenna is investigated for X-band wireless communications. The planar array consists of periodic hexagonal patches with variable sizes. The periodicity controls the direction of the radiated beam through surface impedance modulation. Two tapered microstrip transmission lines are placed at both ends for surface wave launchers. The radiation characteristics of the planar hologram metasurface leaky wave antenna (HMLWA) are investigated. The increase in hexagonal patches cells aperture, increases the radiated gain and radiation efficiency. The peak gain is 20.4 dBi with gain bandwidth of 3 GHz with high efficiency of 87%. The periodicity selection controls the direction and number of radiated beams. Dual-beam at angles $theta_{1}=32^{circ}$, and $theta_{2}=42^{circ}$ are radiated for two different periodicities $mathrm{P}_{1}=40$ and $mathrm{P}_{2}=30$ at operating frequency, f=15 GHz. The effect of curvature on the radiation characteristics of the HLWA is investigated. Two conformal structures, along the longitudinal direction and the transverse direction are explained.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121080243","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":"Detecting and Preventing for Performance Assessment of IoT Devices Under Dodag Information Solicitation (dis) Attacks","authors":"Tamer Kamal, Emadeldin Helmy, Sherif Fahmy, M. H. Abd El-Azeem","doi":"10.1109/NRSC58893.2023.10152999","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152999","url":null,"abstract":"The Internet of Things (IoT) is an important area of research as the ever-increasing number of connected devices permeate every aspect of our daily lives. The main characteristic of IoT devices is that they tend to be low resource devices, that are incapable of sustaining high power consumption activity for a long time, and they also tend to operate on lossy networks. Therefore, the term (Low Power and Lossy Networks - LLNs) is used in reference to such networks. The routing protocol used on IoT networks is typically RPL (Routing Protocol for Low-Power and Lossy Networks). These characteristics make IoT devices vulnerable to a variety of attacks; the most common of which are (DIS-DODAG Information Solicitation) attacks. This is a routing protocol attack that targets IoT resources, especially the battery of devices. This paper proposes a simulation and analysis of the DIS attack impact on the network performance in terms of energy consumption, as well as study the relationship between the number of attacker nodes and the IoT lifetime. We analyze number of attack scenarios to figure out the relationship between the number of attacker nodes and the power consumption among the IOT device and the reflect on its lifetime. We found that the power consumption inversely proportional with the number of attacker nodes as the power consumption increased by 212.374% with four attack nodes and by 650% with one attacker node and so the IOT life time decreased 2.21 times and 6.5 times respectively. We also proposed two novel algorithms for detecting and mitigating the DIS-attacks, and we simulate and evaluate them finding that they are very effective in stopping both slow/fast attacks and minimizing the false positives, as we simulated six attack scenarios with different attack rates and by studding the Attack Discover Performance we found that The system is Robust Enough to discover/stop high wave of Security intrusions.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129071452","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":"B5G/6G Network Planning For Study Case In Knowledge City Area As Model For Smart Cities","authors":"Hesham M. El-Badawy, Hend Adel Sayed Ahmed, S. Zainud-Deen, Hend Abd El-Azem Malhat","doi":"10.1109/NRSC58893.2023.10152960","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152960","url":null,"abstract":"The most crucial step of a cellular framework's life cycle is radio network design since it determines the system's operational costs (OPEX), capital costs (CAPEX), and long-term viability. Consequently, it is not unexpected that radio planning arranging had been examined broadly for the past three decades for all four eras of cellular frameworks. In this paper, we first provide a brief overview of the major technologies that enable B5G/6G network planning and arrangement requirements, such as capacity estimation, reservation coverage calculation, and dynamic capacity assignment. The B5G/6G air interface and its various propagation models, which are appropriate for the mid and high bands (mmWave) spectrum, are also mentioned. Traffic kinds, propagation modelling, and calculation methods for system throughput and capacity are among the RF essential parameters and planning parameters. This research expects to provide initial planning and radio deployment perspectives description for B5G/6G New Radio (NR) technology implementation in Knowledge city of administrative new capital. Special concern will be investigated due to the nature of having dense urban area as well as the starving for high data rate applications that may be implemented in the smart cites. The advent of B5G/6G technology has facilitated the establishment of smart cities with the necessary connectivity that empowers the utilisation of sensors, data analysis, analytics, and various other related resources. The pivotal role that technology plays in the transformation of urban environments into sustainable, resilient, and efficient entities underscores the importance of this innovative feature in shaping the future of smart cities. Network planning process presented in this paper will be based on coverage area at frequency 2.6 GHz, 3.5 GHz, and 28 GHz in The Knowledge City. Link budget is estimated using an outdoor-to-outdoor (O2O) with Line-of-Sight (LOS) scenarios UMa (Urban Macro-Street canyon) model and Urban Micro (UMi) are being used as standardized propagation model.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128156595","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":"Efficient Block-sparse Signal Recovery with Application to ECG Compression","authors":"Michael Melek","doi":"10.1109/NRSC58893.2023.10153016","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10153016","url":null,"abstract":"Compressed sensing enables sparse signals recovery from few linear measurements. For many types of signals, such as those which exhibit sparsity in the wavelet domain, the non-zero elements occur in blocks. Signals of this type are referred to as block-sparse signals. This paper proposes a block-sparse signal reconstruction algorithm, block adaptive matching pursuit (BAMP), which is characterized by high speed and accuracy. In this algorithm, a number of blocks is selected in each iteration, which is adapted according to the average correlation between the signal and blocks of the measurement matrix. Moreover, in each iteration, the support is refined, or pruned, to exclude blocks that do not contribute to the signal. We apply BAMP to ECG signal recovery from compressed measurements. Simulations illustrate significant improvements in accuracy and speed in comparison to other related block-sparse recovery algorithms for random and ECG signals.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126740151","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":"Designing Of Fractional Order Legendre Filter Using Optimization Techniques","authors":"Andrew Amgad, A. M. Abdelaty, Hazem A. Attia, M. M. Elbarawy","doi":"10.1109/NRSC58893.2023.10152917","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152917","url":null,"abstract":"Fractional order filter has attracted the attention of international specialists due to its notable design flexibility and continuously stepped stopband attenuation rate. This study suggests an ideal design strategy for fractional-order Legendre low pass filters which is customized to design requirements, based on an meta-heuristic optimization technique. To attain the desired result, the magnitude response of the normalized Legendre low pass filter is modified by incorporating the fractional-order Legendre polynomial along with the suppression of ripples. The fractional order of the normalized Legendre low pass filter are calculated in accordance with specifications. The Flower Pollination Algorithm (FPA), which is a type of swarm-based optimization technique, is utilized to adjust the transfer function parameters of a fractional-order filter. The goal is to produce a magnitude response that is similar to the desired response mentioned earlier. This process results in the optimized design of a fractional-order Legendre filter. In order to demonstrate the viability of the suggested approach, a case study, stability analyses, LT-spice simulations, and an actual circuit are shown.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114955415","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":"Analysis of Periodic Waveguide Excitation with Arbitrary Shaped Corrugation","authors":"Mohammed Salem, H. Kirolous, T. Abuelfadl","doi":"10.1109/NRSC58893.2023.10152981","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152981","url":null,"abstract":"In this paper a general solution for the electromagnetic field that can be obtained inside arbitrarily shaped corrugated waveguide. The excitation is made spatially periodic at the same period as the corrugation, where the corrugation is made as a truncation in a canonical smooth conducting waveguide, such as planar, rectangular, or circular. Floquet canonical modes in smooth waveguide is used as a basis to expand the field solution inside the corrugated structure.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"10 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133076089","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}