Antenna design for Demo 90121 Ic.

Hello,

I am using a Melexis 90121 Ic demo version. The output power of the chip is 1 W. I want to design different types which can be interfaced with this chip and compare them. I have just stepped in the design of antenna's. Please give me a little bit of brief idea the anteenas design which I consider with this chip. I have attached the data sheet of the chip.

Looking forward for your replies.

http://www.alldatasheet.com/datashee.../MLX90121.html