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使用在空间场合的反射面天线,其反射面大多由可活动的导电栅网组成。尽管采用高导电材料,例如金或银镀覆栅网的传导导线的表面,在导线间的搭接点仍然会出现一种所不希望的肖特基势垒。在解决这种栅网的散射问题时,采用了共轭梯度法(conjugate gradicnt method)及快速付里叶变换(FFT)。搭接点的肖特基阻抗和导线本身的有限电导率的影响体现在一个所谓内阻抗中。对不同极化的电磁波在不同角度入射时的反射系数的计算值表明,这种肖特基阻抗严重影响这类栅网的反射特性。
Reflector antenna used in space applications, the reflective surface mostly composed of a movable conductive grid. Despite the use of highly conductive materials, such as gold or silver plated mesh conductive wire surfaces, there is still an undesirable Schottky barrier at the lap joint between the wires. The conjugate gradicnt method and fast Fourier transform (FFT) have been used to solve this grid scattering problem. The effect of the Schottky resistance of the lap joint and the finite conductivity of the conductor itself manifests itself in a so-called internal impedance. Calculations of the reflection coefficients of different polarized electromagnetic waves at different angles of incidence indicate that such Schottky resistances seriously affect the reflection characteristics of such grids.