Rotman Lens Designer Overview



Rotman Lens Designer

Rotman Lens Designer 简称RLD是REMCOM公司推出,专门用于设计,分析和合成各种罗德曼透镜和其变体,RLD可以透过用户输入的机构和电子等设计参数,套用几何光学和古典罗德曼透镜的设计公式,可以快速地完成设计和分析工作。
RLD可以建立罗德曼透镜的轮廓,transmission line geometry,absorptive port (dummy port) geometry等特征,同时会提供一个近似的性能分析,并且建立几何模型,可以用于同为REMCOM公司的高频电磁软件XFdtd使用并且进行后续的模拟分析工作。




Rotman Lens Designer 的各种功能
 
RLD 可以运用典型的罗德曼透镜参数建立基础设计,依据这些输入,RLD可以产出各种延伸的输出数据并且显示在软件操作接口里,以下是一些重要的输入和输出参数:
 
Inputs:
  • Type of lens - microstrip or stripline
  • Impedance of lines
  • Element spacing on the antenna
  • Number of elements (up to 128)
  • Number of beams (up to 128)
  • Maximum scan angle
  • Off-axis focii angle as a fraction of max scan angle
  • Bandwidth and center frequency
  • Electrical characteristics of lens material - dielectric constant, loss tangent, conductivity and thickness of dielectric material
  • Electrical characteristics of absorber material
  • Physical characteristics of lens - focal length/diameter ratio
  • Aperture distribution
  • Port flare angles
Outputs:
  • Calculation of the lens contour and of the transmission line geometry
  • Element locations along the lens contour
  • Insertion loss (per beam port)
  • Amplitude and phase distributions of the array ports versus frequency
  • Beam to array phase error
  • Beam to array coupling magnitude and phase
  • Beam to array sidewall coupling magnitude
  • Beam to array spillover coupling magnitude
  • Array to beam coupling magnitude and phase
  • Array to beam sidewall coupling magnitude
  • Array to beam spillover coupling magnitude
  • S-parameters for all ports
  • Suggested focal length
  • Number of dummy elements
  • Location of loads on dummy elements
  • Location of absorber if necessary
  • Dimensions, volume
  • Gerber format files may be exported with third-party software
  • XFdtd format files may be exported for full wave analysis
  • Export to SAT format 
软件运作环境需求:
  • Windows 2000 或 XP以上
  • Red Hat Enterprise Linux 4 或以上
  • 最低分辨率达1024x768的显示环境
  • 内存达64MB或更高并支持OpenGL的显示适配器
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