Definition - What does Antenna Array mean?
Techopedia explains Antenna Array
There are two basic types of antenna arrays:
- Parasitic Array: Used for controlling radar and various other narrow beams such as the microwave communication system.
- Driven Array: Radiating elements are connected to an energy source and have less loss when compared to parasitic arrays, but still maintain the narrow beam characteristics. The driven arrays are used as search radar antennas where narrow beams are less critical when compared to low losses.
When arrays are arranged in straight lines, it is called a linear array, while antennas arranged in parallel lines on one plane have plane arrays in two dimensions. Numerous planes in a group of antennas results in a three dimensional array. The same orientation results in reinforcement of electric field intensity and ensures polarization in the same direction.
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