Phased array antennas contain multiple antenna elements that can each have their phase and amplitude controlled individually. This allows the beam direction and pattern of the overall antenna to be steered electronically without mechanical movement. Phased array antennas are used where rapid target tracking is required, such as in communications, direction finding, weather research, and military applications like with the Army. They provide an advantage over mechanically steered antennas by allowing electronic beam steering without inertial limitations.

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Phased Array
Radar Antennas
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2. Phased Array Antennas
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Introduction
What describes a phased array antenna?
 Contains many antenna elements with
relative phase difference between
successive elements
 Phase and amplitude of each element
variable
 Provides control of the beam direction and
pattern shape

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Principle of Operation
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Objective
Accomplish beam steering
electronically, without the
mechanical and inertial problems
of rotating an entire array

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The Key to MPAR System
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MPAR PAnel design
Exploded view of the MPAR panel
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MPAR concePtuAl design
MPAR architecture overview12

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Applications
 Used where rapid target tracking is required
 Direction finding
 Communications applications where the
radiation pattern must be adjusted to
accommodate varying traffic conditions

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Space probe communication
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Weather research usage
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Weather research usage
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Army usage

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Army usage

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Movie

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