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In this work, we present an enhanced version of our algorithm that can evaluate dimensions of a slot being placed within a patch surface of a rectangular microstrip antenna. While in the earlier work we were able to compute only one slot dimension, in this paper we present the computation of two slot dimensions, given the desired resonant frequency and the mode of operation. The paper discusses how...
In this work, we investigate how a faster computation of microstrip antenna resonant frequencies or slot dimensions could be enabled by a prediction algorithm written in script language such as MATLAB, instead of having to run a full-wave solver. Following our earlier study of the behavior of the first three modes of a slotted rectangular microstrip antenna (SRMA), we now use those results as a basis...
This paper presents a 3D computational model we have created to enable easier and more accurate analysis of the wireless power transfer (WPT) based on the magnetic resonance coupling method (MRC). The model enables time-efficient analysis of practical issues in the design of an MRC WPT system, such as: the optimal size of the MRC system on the transmitting (Tx)- or receiving (Rx)- side, the effects...
An approach is proposed for a self-recovery algorithm (SRA) to be embedded in an autonomous and reprogrammable controller device that would be used to monitor a system, sense failures of the system components and find a solution to recover the functionality of the system as much as possible. The approach presented here is on the scenario of self-recoverable antenna arrays, perceived as one of the...
An embedded system, based on the field programmable gate array (FPGA) technology is proposed for mitigation of a flawed-array radiation. The current solution includes a genetic algorithm (GA) that finds a new set of the array excitation parameters in case the radiation pattern of the flawed array is unacceptably degraded with respect to the originally designed pattern. A successful real-time mitigation...
In this paper, a neural network (NN) field programmable gate array (FPGA) controller is designed. NN-FPGA controller implies building of a cost efficient neural network by using customizable blocks designed in the Simulink and Xilinx System Generator. Network parameters are mapped into a hardware structure that improves the performance and the efficiency.
The paper discusses a real-time performance of a genetic algorithm (GA) that is embedded in a Field Programmable Gate Array (FPGA) to create a system for real-time recovery of the radiation pattern of a thinned array. Major concepts of embedding an algorithm into an FPGA are discussed, along with a description of the problem and the performance of the current solution. A hybrid GA with dual-point...
This paper deals with the initial stage of the development of a SRA system, whereas the complete system is meant to incorporate real-time computing, decision making, parameter optimization, and autonomous operation. When complete, the system could have a significant impact on smart communication systems in terms of their versatility and robustness of operation.
A reconfigurable stacked Microstrip Patch Antenna (MSA) of operating frequencies in the range of (2-5) GHz is proposed for wireless applications. The new antenna is composed of two layers, the bottom layer is a patch with two slots designed on each side that can be controlled via switches. By adjusting the status of the switches, the resonance frequencies can be varied, thus achieving frequency reconfigurability...
This paper investigates the effects that multi-switch excitation has on the response of a parallel-plate Blumlein line. In particular, it tests a practical limit on the number of switches beyond which no change is observed. The results are shown in terms of the pulse width, shape, and the maximum electrical field inside the line. Finally, nonuniform switch spacing is studied to determine any further...
This paper reports our findings on the computational study of a multi-layer dielectric used in a parallel-plate Blumlein pulse-forming line. This technique is explored with an aim of lowering the electric field inside the line and thus reducing the probability of breakdown. Using stepped transition of conductivity, we explore what distributions and values of conductivity are beneficial for this goal...
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