Asymptotic Evaluation of the Edge Diffraction in Cylindric Paraboloidal Reflector Antennas
نویسندگان
چکیده
منابع مشابه
Distorted Reflector Antennas: Radiation Pattern Sensitivity to the Surface Distortions
The high-frequency performance of the reflector antennas is mainly limited by the surface. It has been shown that distortions on different regions of the reflector surface can have different effects on the radiation performance. In other words, degradation of the radiation pattern due to the presence of surface distortions is sensitive to the location and behavior of the surface distortion prof...
متن کاملOn the regularity of reflector antennas
where ν is the outer normal to A at the point where the light ray hits A. Suppose that we have a light source located at O, and Ω,Ω∗ are two domains in the sphere Sn−1, f(x) is a positive function for x ∈ Ω (input illumination intensity), and g(x∗) is a positive function for x∗ ∈ Ω∗ (output illumination intensity). If light emanates from O with intensity f(x) for x ∈ Ω, the far field reflector ...
متن کاملUltra Thin Deployable Reflector Antennas
We have recently proposed a new concept for deployable reflectors consisting of a thin parabolic carbon-fibre-reinforced-plastic (CFRP) shell stiffened along the edge by an elastically collapsible stiffener. Here we show that a stiffener accounting for less than 10% of the total mass of the reflector increases the stiffness of the softest deformation mode of the deployed reflector by 48 times, ...
متن کاملDistributed Reflector Structure and Diffraction Grating Structure in the Solar Cell
Today, due to qualitative growth and scientific advances, energy, especially electricity is increasingly needed by human society. One of the almost endless and pure energy which have been paid attention over the years is the solar energy. Solar cells directly convert solar energy into electrical energy and are one of the main blocks of photovoltaic systems. Significant improvement has been made...
متن کاملevaluation of sadr eminence in safavid period
چکیده: یکی از دوره های مهم تاریخی ایران به لحاظ تأمین استقلال ملی مذهبی و حتی تأثیر آن بر فرهنگ و مذهب ایرانیان، دوره صفویه است. رسمیت دادن و رواج مذهب شیعه توسط شاه اسماعیل اول، یکی از مهمترین اقدامات این دولت محسوب می شود. بنابراین برای اجرای این سیاست، وی منصب صدارت را به عنوان منصبی مذهبی- حکو متی ایجاد کرد .این منصب از دوره ی تیموریان ایجاد شده بود ولی در اواخر این دوره اهمیت بیشتری یافت...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mathematical and Computational Applications
سال: 2003
ISSN: 2297-8747
DOI: 10.3390/mca8020143