Ashraf Shawky Selim SayedAhmed Mohra|Publications

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Prof. Ashraf Shawky Selim SayedAhmed Mohra :: Publications:

Research Fields

image processing

cryptography

Microstrip hybrid Circuits

nondestructive techniques

six port reflectometer, filters

microstrip antennas

PBG-DGS-Metamaterials

Number of publications is 68

Title

1-Advanced Diagnostic Technique for Alzheimer’s Disease using MRI Top-Ranked Volume and Surface-based Features

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2-Efficient Image Encryption Based on New Substitution Box Using DNA Coding and Bent Function

Abstract

3-Radar Pulse Compression with Optimized Weighting Window for SAR Receivers

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4-A Novel Dynamic Mathematical Model Applied in Hash Function Based on DNA Algorithm and Chaotic Maps

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5-Design and Implementation of Advanced Encryption Standard b

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6-The key management of direct/external modulation semiconductor laser response systems for relative intensity noise contro

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7-Duobinary modulation/predistortion techniques effects on high bit rate radio over fiber systems

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8-High Speed Pulse Generators with Electro-optic modulators based on different bit sequence for the digital fiber optic communication links

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9-Managing the Interference for Down-Link in LTE Using Fractional Frequency Reuse

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10-Lowpass Filter with Sharp Roll off Factor Using Open Circuit Stubs and Modified π-Defected Ground Structure

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11-Enhancing Hierocrypt-3 Performance by Modifying Its S-Box and Modes of Operations

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12-Neighbor Cell List Optimization based on Game Theory and Location Information for the Handover Process in Dense Fcns

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13-Compact Triple -Band Microstrip BPF Utilizing Interdigital-Coupled Lines Feeding Structure

14-Skin Lesion Analysis towards melanoma Detection using Deep Learning Techniques

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15-Deep Learning Face Detection and Recognition

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16-Face Recognition using Deep Neural Network Technique

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17-A Reconfigurable UWB Bandpass Filters with Embedded Multi-Mode Resonators

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18-Hybrid Method for brain extraction and MRI scan classification

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19-Compact UWB Power Divider, Analysis and Design

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20-Ultra-widband Bandpass Filter with Sharp Tuned Notched Band Rejection based on CRLH Transmission Line Unit Cell

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21-Microwave Dielectric Sensing in Hyperbolically Dispersive Media

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22-novel compact harmonic-rejected ring resonator based bandpass filter

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23-Reconfigurable 3/6 dB Novel Branch line coupler

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24-Compact Cascaded Branch Line Coupler using T-Sections Conversion

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25-Controllable WLAN Band Rejection of Ultra Wideband Monopole Antenna Using PIN Diodes and Two C-Shaped Conductor

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26-Controllable Band-Notched UWB Printed Monopole Antenna

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27-A Novel UWB Vivaldi Antenna Array for Radar Applications

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28-Electronically switchable lowpass/bandpass Filter with Controlled Bandwidth using Pin Diode- Loaded stubs

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29-COMPACT DUAL BAND WILKINSON POWER DIVIDER

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30-Dual Band Branch Line Coupler using T and Π Sections

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31-A compact ultra wideband bandpass filter using arrow coupled lines with defected ground structure

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32-A HARMONIC-SUPPRESSED MICROSTRIP ANTENNA USING A METAMATERIAL-INSPIRED COMPACT SHUNT- CAPACITOR LOADED FEEDLINE

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33-Ultra Wideband Antenna with Controllable Rejection Band

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34-A Compact Ultra Wideband Bandpass Filter Using Arrow Coupled Lines with Defected Ground Structure

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35-Applications of Defected Ground Structure for size reduction of hybrid junctions

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36-A Compact Antenna for Microwave Imaging and Hyperthermia Treatment of Brain Tumor

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37-Development of Microwave System for Tumor Ablation and Imaging

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38-Microstrip Lowpass Filter with Wideband Rejection using Opened Circuit Stubs and Z-slots Defected Ground Structures

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39-Size Reduced Defected Ground Microstrip Directional Coupler

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40-Quad-Band power divider based on left-handed transmission lines

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41-A Microstrip Directional Coupler with Tight Coupling and Relatively Wideband using Defected Ground Structure

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42-Design, Analysis and Related Applications of Shunt Varactor Loaded Reconfigurable Metamaterial Transmission Lines

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43-HARMONIC SUPPRESSED AND SIZE REDUCED BANDSTOP AND BANDPASS FILTERS

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44-COUPLED MICROSTRIP LINE BANDPASS FILTER WITH HARMONIC SUPPRESSION USING RIGHT-ANGLE TRIANGLE GROOVES

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45-COMPACT LOWPASS FILTER WITH SHARP TRANSITION BAND BASED ON DEFECTED GROUND STRUCTURES

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46-Tunable bandpass filter based on capacitor-loaded metamaterial lines

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47-Dual Band Wilkinson Power Dividers Using T-Sections

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48-"Modified Compact H-Shaped Microstrip Antenna for Tuning Multi-Band

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49-Near-Field Characterization of Reconfigurable Narrowband Antenna in the Proximity of the Human Body

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50-Dual Band Ring Couplers Using T and П Sections

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51-SMALL SIZE STEPPED IMPEDANCE LOW PASS FILTERS

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52-GMR and GMI Based system for Nondestructive evaluation of printed circuit boards

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53-Development of Metal Inspection System Exploiting Magnetoresistive Sensors

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54-Investigation of new nondegenerate dual-mode microstrip patch filter

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55-A novel dual band small size microstrip antenna

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56-New Compact 3 dB 0 /180omicrostrip coupler configurations

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57-THE THREE-SECTION MICROSTRIP DIRECTIONAL COUPLER

Abstract

58-SIX-PORT REFLECTOMETER STRUCTURE USING TWO MICROSTRIP THREE–SECTION COUPLERS

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59-SIX-PORT REFLECTOMETER BASED ON FOUR 0°/180° MICROSTRIP RING COUPLERS

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60-A small size of 3dB 0/180 Microstrip ring coupler

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61-Analysis and Design of Small Size Short Circuited Microstrip T-Shaped Antenna

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62-Field Theory of five Port Annular Microstrip Junction

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63-Design and performance of Novel shorted small microstrip antenna

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64-A New small size 3-dB 180° Microstrip Ring couplers

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65-A New Class of Miniature Quadrature Couplers for MICs and MMICs Applications

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66-MULTI-BAND OPERATION OF A COMPACT H-SHAPED MICROSTRIP ANTENNA

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67-A small size 3dB 0/180o microstrip ring coupler

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68-Six-port Reflectometer Realization Using Two Microstrip Three-Section Couplers

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Prof. Ashraf Shawky Selim SayedAhmed Mohra :: Publications: