Phased Array Antenna

When a wave meets the edge of an object the wave starts to wrap around the edge. This is called diffraction.

The performance of antenna arrays can be severely degraded by edge diffraction and reflections of surface waves from the edges.

2007-07-05 16:56:28 by darren e

Well I for one RT am not going to attack you for your answer ! the plain fact is that I could not have explained it any better and you will see by a lack of alternative answers that I am correct in saying that nobody else could explain it better either !!!
OH Except for the cut n paste merchants , but then they are really quoting someone elses answer are'nt they ?
Full marks.
Cheers Pete

2008-04-22 12:30:01 by ut61vols

Price: $169.00

can i achieve the same gain of a parabolic dish antenna using phased antenna arrays ?

thanks

You will eventually achieve the gain of a dish by phased antenna arrays, but it's a very costly and complex way of doing it!
The high gain of a parabolic dish makes it the simplest form of directional antenna for most purposes.

2008-10-20 13:06:32 by tamer

Price: $610.95 $395.44

Ferrule Type Chrome Plated
Antenna Band VHF
Length (Inches) 23'
Color White
Cable Length (Feet) 15'

what is the advantages and disadvantages of each system, the mechanical steering like in radars, and electronic steering like in phased antenna arrays.

The mechanical system is more efficient and costs less.

The electronic system is faster, more flexible and more reliable.

2008-10-20 13:13:10 by tamer