PESA Technology

PESA Technology

  • High gain
  • Large scan angles
  • Conformal geometry
  • Low production cost
  • Fault tolerant
  • No adjustments needed

Description

Passive Electronically Scanned Array (PESA) technology, also known as passive phased array, is a phased array antenna, where the beam of radio waves can be electronically steered to point in different directions, in which all the antenna elements are connected to a single transmitter and/or receiver. The antenna is capable of producing multiple beams which can be optimized to steer without changing the antenna orientation. Beams are formed by shifting the phase of the signal emitted from each radiating element, to provide constructive (or destructive) interference so as to steer the beams in the desired direction.

The different electrical lengths between a specific input and all output ports, generates linear progressive phase shifts across the output ports of the lens. Dummy ports are also an integral part of the Rotman lens and serve as an absorber for the spillover of the lens and thus it reduces multiple reflections and standing waves which typically deteriorate the lens performance.

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