2023 40th National Radio Science Conference (NRSC)最新文献_第4页

Plasma -based Intelligent Omni-surfaces 基于等离子体的智能全曲面

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10152949

Esraa A. El-Refay, H. Malhat, S. Zainud-Deen, M. M. Badawy

引用次数: 0

Sensor Based Traffic System With Pedestrians In Mind 考虑行人的传感器交通系统

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10152875

Ahmed Gomaa, Satya N. Prattipati

引用次数: 0

Triple Band Low Noise Amplifier Design for Wireless Applications 无线应用的三频带低噪声放大器设计

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10152888

H. Tork

引用次数: 0

Circularly Polarized Phased Array Based On Reconfigurable Plasma Material Without Phasing Network In Near/far Field Regions 基于可重构等离子体材料的近/远场无相位网络圆极化相控阵

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10152966

M. M. Badawy, S. Zainud-Deen, H. Malhat

{"title":"Circularly Polarized Phased Array Based On Reconfigurable Plasma Material Without Phasing Network In Near/far Field Regions","authors":"M. M. Badawy, S. Zainud-Deen, H. Malhat","doi":"10.1109/NRSC58893.2023.10152966","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152966","url":null,"abstract":"This paper presents a new type of phased array antenna (PAA) that uses plasma material to achieve circular polarization characteristics. The plasma controls the phase shift of individual elements without the need for conventional phase shifters feeding network. The PAA is made up of 64 plasma dipole elements arranged into $4times 4$ sub-arrays, each consisting of $2times 2$ sequentially rotated plasma dipole elements with different plasma ionization frequencies. The PAA is designed to radiate either right-hand circular polarization (RHCP) or left-hand circular polarization (LHCP). Two different sub-array arrangements are designed with plasma frequencies distribution of $(omega_{mathrm{p}1},omega_{mathrm{p}2},omega_{mathrm{p}1},omega_{mathrm{p}2})$ for arrangement (I), and $(omega_{mathrm{p}1},omega_{mathrm{p}2},omega_{mathrm{p}^3},omega_{mathrm{p}4})$ for arrangement (II). The frequency for minimum axialratio is controlled by selecting $omega_{mathrm{p}1}$, and $omega_{mathrm{p}2}$. PAA is designed to radiate right-hand circular polarization (RHCP) with peak gain of 20.9 dBi, and the 3-dB bandwidth $(text{AR} < 3text{dB})$ is 200 MHz. In arrangement (II), PAA radiates left-hand circular polarization (LHCP) with peak gain 19.1 dBi and AR bandwidth of 440 MHz. The NF-focused array focuses the field on a spot width of 4.4 cm compared to 6.6 cm for the non-focused array. A near-field focused PAA is also designed using one of the sub-array arrangements (I). This array focuses the field on a narrower spot compared to the non-focused array.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"125 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":"124631020","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}

引用次数: 0

FPGA-Based Modified Ring Oscillator Physical Unclonable Function for Internet of Vehicles 基于fpga的车联网改进环形振荡器物理不可克隆函数

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10153063

Mariam A. Hamza, H. Issa, S. Eisa

引用次数: 0

A New Computationally Efficient Approach for High-Resolution DOA Estimation of WideBand Signals Using Compressive Sensing 基于压缩感知的宽带信号高分辨率DOA估计新方法

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10153020

S. El-Khamy, Ahmed M. El-Shazly, A. Eltrass

{"title":"A New Computationally Efficient Approach for High-Resolution DOA Estimation of WideBand Signals Using Compressive Sensing","authors":"S. El-Khamy, Ahmed M. El-Shazly, A. Eltrass","doi":"10.1109/NRSC58893.2023.10153020","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10153020","url":null,"abstract":"Most modern wideband Direction of Arrival (DOA) estimation methods report reasonable resolution at the expenses of high computational complexity. In this paper, an enhanced approach for wideband DOA estimation with high resolution and low computational requirements is introduced. The suggested approach is based on combining the Incoherent Signal Subspace Method (ISSM) with Compressive Sensing (CS). The CS is employed using deterministic chaotic sensing matrices to decrease the dimension of the measurement vector, and hence reduce the software complexity. The efficiency of the introduced technique in enhancing the DOA estimation efficiency is studied for Uniform Linear Antenna Array (ULA). Several evaluation metrics, including the spatial spectrum, the consumed time, and the Root Mean Square Error (RMSE) between estimated and actual DOAs when varying the Signal to Noise Ratio (SNR) and number of elements, are investigated to assess the performance of the proposed approach. Results reveal that the proposed ISSM with CS succeeds not only to achieve high DOA resolution for separating very closely spaced sources, but also to significantly reduce the computational complexity while keeping nearly the same estimation resolution. This demonstrates the effectiveness of the proposed DOA estimation approach in wideband real-time wireless systems.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"68 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":"132973994","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}

引用次数: 0

S-Matrix Analysis of Dense Wave-division Demultiplexer Based On Add/drop Ring Resonators Structures 基于加/降环谐振器结构的密集波分解复用器的s矩阵分析

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10152956

Mohamed Abdelsalam Mansour, R. Shalaby, Abdelrahman Nasser, Kareem Owis, H. Kotb, H. Omran, D. Khalil

引用次数: 0

Design Of Step Pyramidal Nanoparticle For Plasmonic Photovoltaics 等离子体光伏用阶梯锥体纳米粒子的设计

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10152957

Heba M. Yassin, E. Soliman, Y. El-Batawy

引用次数: 0

An Optimized Frequency Plan Algorithm For Non-geostationary Constellations Using Integer Linear Programming 基于整数线性规划的非地球静止星座频率规划优化算法

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10152944

M. Mandour, Ahmed A. Abdel Hafez, Islam A. El-Madah, Hoda K. Mohamed

{"title":"An Optimized Frequency Plan Algorithm For Non-geostationary Constellations Using Integer Linear Programming","authors":"M. Mandour, Ahmed A. Abdel Hafez, Islam A. El-Madah, Hoda K. Mohamed","doi":"10.1109/NRSC58893.2023.10152944","DOIUrl":"https://doi.org/10.1109/NRSC58893.2023.10152944","url":null,"abstract":"The unprecedented growth of massive satellite constellations, as well as the advent of a significant number of steerable beams and digital payloads, poses new challenges in determining how to distribute satellite resources. New resource management strategies that operate in high-dimensional and dynamic environments will be required to meet these new challenges. Under the context of satellite communications, the resource allocation (RA) problem is decomposed into six sub-problems: frequency assignment, power allocation, beam placement, user grouping, gateway routing, and satellite routing. Existing conventional techniques of satellite resource allocation become unfeasible to deal with these new challenges and new algorithms have to be developed. The majority of frequency assignment methods fail to fulfill the requirements of the high-dimensional and dynamic environments without defaulting on bandwidth utilization and power efficiency. The work in this paper proposes a new frequency assignment algorithm based on a mathematical programming language (AMPL) that can completely design a dynamic frequency plan with bearing in mind system constraints like handovers and interference. The proposed algorithm is evaluated with multiple objective functions such as bandwidth maximization and produces optimal solutions. Experimentally, the proposed algorithm can allocate at least 155% more bandwidth compared to previous baseline benchmarks.","PeriodicalId":129532,"journal":{"name":"2023 40th National Radio Science Conference (NRSC)","volume":"37 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":"132980122","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}

引用次数: 0

Microwave Imaging System for Breast Cancer Detection Using Merit Toolbox 基于优点工具箱的乳腺癌微波成像检测系统

2023 40th National Radio Science Conference (NRSC) Pub Date : 2023-05-30 DOI: 10.1109/NRSC58893.2023.10152940

Sherif Hekal, Fady E. Asaad, H. M. Mansour, Gehan S. Shehata

引用次数: 0