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This paper presents a thin wave absorber composed of mushroom structures. First, a dispersion diagram of the unit cell is shown. The thin wave absorber composed of mushroom structure can reduce RCS at two frequencies at oblique incident angles. The patch structures without via can also reduce RCS at lower frequency. The electric field distributions and the bistatic RCS pattern are shown.
For convenient portable earth stations of satellite communications, offset parabolic reflector antennas are employed in broadcasting TV [1] and military uses [2]. Authors have been developing an array feed offset parabolic reflector antenna [3]. The array feed was designed to improve antenna gain of the reflector antenna [4]. Realization of the array feed was ensured through electromagnetic simulations...
Asbestos was widely used in numerous materials and building products due to their desirable properties. It is, however, well known that asbestos inhalation causes health damage and its inexpensive decomposition technique is necessary to be developed for pollution prevention. We report here an innovative decomposition technique of friable asbestos by acidic gas (HF and HCl) generated from the decomposition...
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