RF MEMS FABRICATION

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RF MEMS FABRICATION

• Reflect array element
•   A circularly polarised signal can be thought of
  as two orthogonal linearly polarised signals with
  90? phase shift between them. If upon reflection
  both LP components are phase reversed by 180?
  then the incident CP signal is reflected with the
  opposite hand of polarisation. If only one
  component of the incident LP signal is reflected
  with a phase reversal of 180? then the CP signal
  will be reflected with the same hand of CP as the
  incident signal had.
• The simplest means we found for achieving this
  was to place a resonant dipole antenna, at
  one-quarter wavelength above a ground plane. When
  the dipole is rotated the reflection phase can be
  controlled and steering of the antenna pattern
  obtained. An array of antennae has been designed
  and will be fabricated using MEMS technology.

Viji Srigengan