دانلود ترجمه مقاله مقیاس عملکرد آنتن فوق پهن باند

دانلود ترجمه مقاله مقیاس عملکرد آنتن فوق پهن باند ترجمه در قالب فایل Word و قابل ویرایش میباشد سال انتشار:2017تعداد صفحه ترجمه:5تعداد صفحه فایل انگلیسی:2 موضوع انگلیسی :Ultra-Wideband Antenna Performance Comparisonموضوع فارسی:مقیاس عملکرد آنتن فوق پهن باندچکیده انگلیسی:Abstract—For ground penetrating radar applications antennas with bandwidth typically 3-to-1 or greater are required. Many designs can be found in the literature but performance tends to suffer when extending the bandwidth to lower frequencies. Here the nominal frequency range is 0.3–2.3 GHz (154%) and the TEM horn is used as a reference for performance comparisons. Planar antenna designs have many advantages such as low-profile, light-weight, and ease of fabrication and integration. Various planar monopole and a slot-type antennas are compared where the results show that increasing the size can extend the bandwidth to lower frequencies but introduce radiation pattern instability at high frequen …