emerson & cuming secunderabad india

anyone plz tell me from where can i purchase the ceramic material of dielectric constant 20 for antenna design at microwave frequencies.
plz provide me list of companies with website address if possible.
if there are any company in india then plz tell me address of that company.

Dielectric constant of 20 for antenna ?

Would it even radiate ?

yae why not?
i m working on dielectric resonator antenna so for making this antenna i need such type of ceramic material so plz help me if u can?
thanx

Contact:

EMERSON & CUMING Microwave Products India
Third Floor, DMC Centre, 49 Entrenchment Road,
Marredpally East, Secunderabad- 500 026.
Phone : +91- 40- 66 33 0004
Fax : +91- 40- 66 33 0005
Website: www.eccosorb.com