sab123456
Newbie level 5
Hello every one
I want to collimate the beam of the microstrip antenna array with flat (Fresnel) dielectric lens.
By the way, I want the whole antenna structure to be as compact as possible
And it is very important for me to achieve this goal.
I was thinking to make individual lenses for each element of array and by the mean of Fresnel Technique, curve it on a thick individual substrate and attach it directly on the antenna substrate board.
But there are several problems, for example:
1)It seems that the lens must be quite far from antenna (~40xlambda) in order to operate properly.
2)If we assume that above idea is practical, I don’t know how the individual lenses will affect the overall pattern of the array.
Is there any way to create a lens that could operate in near-field zone?
Is there any alternative way for creating collimated beam without lens (for example by changing the way that the elements of array are excited)?
I want to collimate the beam of the microstrip antenna array with flat (Fresnel) dielectric lens.
By the way, I want the whole antenna structure to be as compact as possible
And it is very important for me to achieve this goal.
I was thinking to make individual lenses for each element of array and by the mean of Fresnel Technique, curve it on a thick individual substrate and attach it directly on the antenna substrate board.
But there are several problems, for example:
1)It seems that the lens must be quite far from antenna (~40xlambda) in order to operate properly.
2)If we assume that above idea is practical, I don’t know how the individual lenses will affect the overall pattern of the array.
Is there any way to create a lens that could operate in near-field zone?
Is there any alternative way for creating collimated beam without lens (for example by changing the way that the elements of array are excited)?
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