نتایج جستجو برای: cavity backed antenna
تعداد نتایج: 128163 فیلتر نتایج به سال:
The formulation of the wall admittance of a circular microstrip antenna by the spectral domain method is presented. The circular microstrip antenna is calculated using the cavity model. The electromagnetic fields within the antenna cavity are determined from the impedance boundary condition at the side aperture. The contribution from the region outside the antenna is taken into account by the w...
We present in this paper an integrated ca ̈ity-backed patch antenna operating at 75 GHz. The design was optimized using a full-wa ̈e software based on the integral-equation method. The antenna was realized using micromachining technologies on two wafers: a silicon one supporting a membrane and a radiating patch, and a Pyrex one constituting the feeding element. The measurements are in good agreem...
We report the first experimental demonstration of time-reversal focusing with electromagnetic waves. An antenna transmits a 1-micros electromagnetic pulse at a central frequency of 2.45 GHz in a high-Q cavity. Another antenna records the strongly reverberated signal. The time-reversed wave is built and transmitted back by the same antenna acting now as a time-reversal mirror. The wave is found ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید