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Small dishes:
> Small dishes - Solid surface
> Small dishes - Mesh surface
> Small dishes + focal plane arrays

Aperture arrays:
> Aperture plane Array (AA)

> Small dishes - Mesh surface

The 12m antenna being prototyped in India is called the pre-loaded parabolic dish (PPD). The parabolic shape is achieved using pre-loaded structural members in the backing structure. This embodies the principle that if a structure has initial stored strain energy, then under certain conditions it has the capacity to offer a larger stiffness for the same weight just as a bicycle wheel and umbrella do.

The first prototype of this antenna is under construction and is expected to be usable from 500 MHz to 8 GHz. Innovative designs for wide band feeds and receivers are being developed for the PPD.

More about this design :
Concept design white papers:
- Indian proposal for 12m Preloaded Parabolic Dish for SKA, 2002 - PDF
- Preloaded Parabolic Dish antennas, 2002 - PDF
Demonstrator white paper: 2004
Consortium: SKA Indian Consortium (SKAIC)

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