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Adopting the sub-optimal vector in the mutant operation and introducing dynamic updating of the parameters, Competition Differential Evolution Strategy (CDES) is proposed to synthesize a main beam with optimized polarization in conformal arrays. An example of circular polarized patch antennas array conformal to a spherical surface is presented. Simulated radiation pattern data for the patches are...
The health state evaluation method is one of the key technologies of Prognostic and Health Management (PHM). Through the health assessment of the satellite power system, it can timely find the potential trend of health degradation and hidden danger of influence of health level, thus improving the level of effectiveness, precision and autonomation of the power system management. Firstly, it analyzed...
A self-shielded antenna-in-package (AiP) covering IEEE 802.11a band is proposed in this paper, and the antenna is designed using quarter mode substrate integrated waveguide (QMSIW) subarray technology. Electromagnetic interference (EMI) in a system-in-package integrated with AiP is discussed firstly. Electric field distribution of the proposed AiP is simulated, and it shows that the metallic via-holes...
Neonatal jaundice could occur in most neonates and phototherapy is one of the most important therapeutic methods. The optical system of neonatal jaundice phototherapy apparatus based on LED was reported in this paper. Modeling and simulation of fly-eye lens which could be used to generate uniform illumination has been conducted and parameters have been optimized. The simulation results show that in...
Task scheduling in sensor networks is becoming increasing complex due to the shift in naval missions, more sensor functions available like the Multifunction Radar. Choosing the most suited sensor for the execution of a sensor function is based on sensor capabilities and function attributes. To increase performance of the entire sensor networks, all the sensors available should be scheduled in a single...
An unequally spaced linear array used in retrodirective array is proposed in this paper. The synthesis is carried out using Differential Evolution with Global and Local neighborhoods (DEGL) algorithm. A 16-element array with two layer antenna element is implemented to validate the numerical results. The simulation results show that the maximum sidelobe level is basically below -20 dB in the range...
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