این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
International Journal of Engineering، جلد ۳۴، شماره ۷، صفحات ۱۷۴۳-۱۷۴۹
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله Drug-target Interactionsو Drug discovery processو Computational Predictionو Weighted Nuclear Norm Minimization،Similarity Graph،Low-rank matrix،
عنوان انگلیسی Objective Functions for the Optimization of an Ultra Wideband Antenna
چکیده انگلیسی مقاله This work proposes an objective function to optimize an ultra wideband antenna for adjusting the bandwidth and coupling with other elements, based on the performance comparison of several objective functions from the literature. The optimal dimensions of a printed rectangular monopole antenna were obtained with the Particle Swarm Optimization method to compare such functions. In the results of the comparison, the linear functions had a mean value of S11 magnitude near the threshold, but they presented a smaller standard deviation than the rest of the functions. The logarithmic and cubic functions showed a mean value of S11 magnitude higher than the double of the threshold, but they had superior standard deviation values, which did not happen with the quadratic function. Hence, the proposed function is the mean of a logarithmic expression with the quadratic argument. With this function, a bandwidth adjustment of 130%, a mean S11 magnitude of -22.1 dB and a standard deviation equal to 6.7 dB were obtained on the resonant band for the designed antenna. In this way, the proposed function can be used to avoid interference with other wireless systems and to obtain a uniform coupling of the antenna.
کلیدواژه‌های انگلیسی مقاله Objective Function,ultra wideband antenna,Particles Swarm Optimization,Bandwidth Adjustment,S11 Magnitude
نویسندگان مقاله A. Contreras |
Department of Circuits and Communications, Faculty of Engineering, Universidad del Zulia, Maracaibo, Venezuela

نشانی اینترنتی https://www.ije.ir/article_132297_c856c2ee20baa2a6a8da396e6dc914fd.pdf
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات