Rambus Inc., Mountain View, CA

Investigated the structure of a Rotman lens as a candidate to perform discrete Fourier transform in RF domain.

  • Modeled a 32 point processor at 60 GHz frequency using a 6 cm diameter Rotman lens with a 9.8 relative permittivity in MATLAB.

  • Doubled the number of input points to 64 while maintaining area by incorporating the vertical dimension in a stacked multilayer structure.

  • Tripled processor bandwidth from 320 MHz to 1 GHz by designing the lens for an offset frequency while maintaining the error at 4%.

  • Investigated major sources of error. Optimized the design parameters. Proposed a method to convert data transfer from serial to parallel.

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