Effect of Curvature of the Conformal Microstrip Antenna

A comprehensive study of the conformal microstrip printed antenna is presented. The main advantages and drawbacks of a microstrip conformal antenna are discussed. The paper discusses both conformal microstrip arrays. The effect of curvature on the conformal microstrip antenna patch on conical and spherical surfaces is studied. New flexible antenna designs are given for different frequencies . Finally, simulation studies are carried out to study the effect of the curvature on the input impedance, return loss, voltage standing wave ratio, and resonance frequency

A New Analytical Performance Model for a Microstrip Printed Antenna

© ASEE 2012Curvature has a great effect on fringing field of a microstrip antenna and consequently fringing field affects effective dielectric constant and then all antenna parameters. A new mathematical model for input impedance, return loss, voltage standing wave ratio and electric and magnetic fields is introduced in this paper. These parameters are given for TM10 mode and TM01 mode Epsilam-10 ceramic-filled Teflon substrate material

Effect of Temperature on the Performance of a Cylindrical Microstrip Printed Antenna for TM01 Mode Using Different Substrates

A temperature is one of the parameters that have a great effect on the performance of microstrip antennas for TM01 mode. The effect of temperature on a resonance frequency, input impedance, voltage standing wave ratio, and return loss on the performance of a cylindrical microstrip printed antenna is studied in this paper. The effect of temperature on electric and magnetic fields are also studied. Three different substrate materials RT/duroid-5880 PTFE, K-6098 Teflon/Glass, and Epsilam-10 ceramic-filled Teflon are used for verifying the new model for a microstrip antenna for its flexibility on cylindrical bodies

Effect of Curvature on the Performance of Cylindrical Microstrip Printed Antenna for TM01 mode

Curvature has a great effect on fringing field of a microstrip antenna and consequently fringing field affects effective dielectric constant and then all antenna parameters. A new mathematical model for input impedance, return loss, voltage standing wave ratio and electric and magnetic fields is introduced in this paper. These parameters are given for TM01mode and using two different substrate materials RT/duroid-5880 PTFE. Experimental results are also introduced to validate the new model

Input Impedance, VSWR and Return Loss of a Conformal Microstrip Printed Antenna for TM01 Mode Using Two Different Substrates

Curvature has a great effect on fringing field of a microstrip antenna and consequently fringing field affects effective dielectric constant and then all antenna parameters. A new mathematical model for input impedance, return loss and voltage standing wave ratio is introduced in this paper. These parameters are given for TM01 mode and using two dif-ferent substrate materials K-6098 Teflon/Glass and Epsilam-10 Ceramic-Filled Teflon materials.https://doi.org/10.5923/j.ijnc.20120202.0

The Performance of a Cylindrical Microstrip Printed Antenna for TM10 Mode as a Function of Temperature for Different Substrates

A temperature is one of the parameters that have a great effect on the performance of microstrip antennas for TM10 mode at 2.4 GHz frequency range. The effect of temperature on a resonance frequency, input impedance, voltage standing wave ratio, and return loss on the performance of a cylindrical microstrip printed antenna is studied in this paper. The effect of temperature on electric and magnetic fields are also studied. Three different substrate materials RT/duroid-5880 PTFE, K-6098 Teflon/Glass, and Epsilam-10 ceramic-filled Teflon are used for verifying the new model

Conformal Microstrip Printed Antenna

© ASEE 2011In this paper, the comprehensive study of the conformal microstrip printed antenna is presented. The main advantages and drawbacks of a microstrip conformal antenna are introduced. The earlier researches in cylindricalrectangular patch and conformal microstrip array are summarized. The effect of curvature on the conformal Microstrip antenna patch on conical and spherical surfaces is studied. Some new flexible antenna is given for different frequencies. Finally, simulation software is used to study the effect of the curvature on the input impedance, return loss, voltage standing wave ratio, and resonance frequency

DEVELOPING AN AGENT-BASED MODEL OF PEDESTRIAN WAYFINDING TO CONDUCT THE BEST TOURISTIC PATH IN HISTORIC DISTRICTS

A historic district is a historic and cultural conservation area that reflects traditional aspects from the past. A sense of memorable pathway allows pedestrian to experience the city happily and attract touristic activity in urban historic districts. The characteristics of touristic districts which facilitate pedestrian movement help in determining the optimum track. The aim of the research is to create an agent-based model (ABM) to simulate the activity of pedestrians in historic districts in order to way find the best touristic paths. Using Space-Syntax, a simulation of the interaction of tourists with the attraction points in old districts pathway will be made in two different case studies located on North Lebanon. A comparison will be made between the simulation model results and field observation. Findings show that the results of the simulation are different than the real environment. The importance of the research is based on developing a framework that helps urban designers and individuals that are concerned with tourism to find the best factors that can affect tourist way-finding and thus being able to develop these districts

A Dynamic Clustering Algorithm for Object Tracking and Localization in WSN

A Wireless Sensor Network (WSN) is an assemblage of cooperative sensor nodes acting together into an environment to monitor an event of interest. However, one of the most limiting factors is the energy constrain for each node; therefore, it is a trade-off is required for that factor in designing of a network, while reporting, tracking or visualizing an event to be considered. In this paper, two object tracking techniques used in Wireless Sensor Networks based on cluster algorithms have been combined together to perform many functions in the proposed algorithm. The benefit of using clusters algorithms can be count as the detection node in a cluster reports an event to the Cluster Head (CH) node according to a query, and then the CH sends all the collected information to the sink or the base station. This way reduces energy consuming and required communication bandwidth. Furthermore, the algorithm is highly scalable while it prolongs the life time of the network

Authenticated public key elliptic curve based on deep convolutional neural network for cybersecurity image encryption application

The demand for cybersecurity is growing to safeguard information flow and enhance data privacy. This essay suggests a novel authenticated public key elliptic curve based on a deep convolutional neural network (APK-EC-DCNN) for cybersecurity image encryption application. The public key elliptic curve discrete logarithmic problem (EC-DLP) is used for elliptic curve Diffie–Hellman key exchange (EC-DHKE) in order to generate a shared session key, which is used as the chaotic system’s beginning conditions and control parameters. In addition, the authenticity and confidentiality can be archived based on ECC to share the (Formula presented.) parameters between two parties by using the EC-DHKE algorithm. Moreover, the 3D Quantum Chaotic Logistic Map (3D QCLM) has an extremely chaotic behavior of the bifurcation diagram and high Lyapunov exponent, which can be used in high-level security. In addition, in order to achieve the authentication property, the secure hash function uses the output sequence of the DCNN and the output sequence of the 3D QCLM in the proposed authenticated expansion diffusion matrix (AEDM). Finally, partial frequency domain encryption (PFDE) technique is achieved by using the discrete wavelet transform in order to satisfy the robustness and fast encryption process. Simulation results and security analysis demonstrate that the proposed encryption algorithm achieved the performance of the state-of-the-art techniques in terms of quality, security, and robustness against noise- and signal-processing attacks