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- equangular spiral antenna 平面等角螺旋天线
- A new-type planar Archimedean spiral antenna,the zigzag planar Archimedean spiral antenna,is presented. 对一种新型的平面阿基米德螺旋天线--锯齿状平面阿基米德螺旋天线进行了研究。
- At first the antenna is an ultra?wideband double-armed Archimedes spiral antenna and fed by 50 ohm coaxial-cable. 文中首先设计了工作频带为1.;5~12GHz的平面阿基米德螺旋天线;其天线直径为80mm;为了使天线输出端阻抗与50?
- An Archimedean plannar spiral antenna mounted on the grounded double layer is investiged. 本文对接地双层介质结构上的阿基米德平面螺旋天线进行了研究。
- With the plane Archimedean spiral antenna a calculation of the current on the antenna as well as its radiation is carried out and its frequency independence was verified. 并以平面阿基米德螺旋天线为例 ;计算了天线上的电流分布和辐射特性 ;验证了天线的频率无关特性 .
- We designed an Archimedean spiral antenna to receive the UHF signals, andbuild the UHF detection system with the TDS-684C digital oscilloscope to meet theneed of the laboratory study. 为了试验室研究的需要,研制了阿基米德螺旋天线传感器,并和 TDS-684C数字示波器一起组成了特高频检测装置。
- On the basis of the analysis of the planar equiangular spiral antenna and the Archimedean spiral antenna, we induce a kind of equiangular spiral antenna terminated by Archimedean structures. 其次,为了实现天线口径的小型化,对平面等角螺旋天线与平面阿基米德螺旋天线的电特性进行对比分析,仿真设计了等角螺旋天线始端终端阿基米德化的复合结构螺旋天线,这种天线一方面改善了等角螺旋天线的低频与高频特性,另一方面在一定程度上克服了阿基米德螺旋天线臂长,传输损耗大,效率低的缺点。
- In this paper, Archimedean spiral antenna is analyzed using a mixed potential integral equation, and the equation is solved by the moment method incorporating with curved piecewise triangle sub-domain basis and pulse testing functions. 从混合位积分方程出发,采用矩量法结合曲线分段的三角基函数和脉冲检验函数分析了阿基米德平面螺旋天线,给出了输入阻抗,电流分布以及辐射方向图结果。
- A novel monofilar spiral antenna for ground station in satellite communications is studied,which forms a tilted fan beam and is excited through a helical wire and fed by a coaxial line. 研究了一种应用于卫星通信地面站的新型单臂平面螺旋天线,该天线采用圆柱螺旋激励同轴线馈电,可以形成倾斜的波束,通过改变圆柱螺旋的参数可以调整其输入阻抗以达到阻抗匹配的目的。
- In this paper, a calculation formula of a spiral antenna with input impedance is deduced, then the geometrical size of a spiral antenna is optimized based on the related technical standard. 然后,在使天线输入阻抗满足技术要求的条件下,对螺旋天线的几何尺寸进行了优化设计。
- Plane equiangular spiral antenna 等角平面螺旋天线
- Two novel spherical helical antennas are designed by projecting the planar equiangular spiral antenna onto the surfaces of hemisphere and partial sphere. 摘要将平面等角螺旋天线投影到半球面和部分球面上，得到半球面螺旋天线和部分球面螺旋天线两种新型球面螺旋天线。
- spiral antenna with two off-center sourc 带双离心源螺旋天线
- planar microstrip spiral antenna 平面微带螺旋天线
- planar spiral antenna characteristic 平面螺旋天线特性
- The moment method analysis of the plane Archimedean spiral antenna 平面阿基米德螺旋天线的矩量法分析
- Military budget continue to spiral. 军费预算继续上升。
- Reception improved because of the new antenna. 接受效果因有新天线而得到改善。
- Military budgets continued to spiral. 军事预算继续急遽增加。
- A snail's shell is spiral in form. 蜗牛壳是螺旋形的。
