designing of Rectangular DRA

i want to design Rectangular dielectric resonator antenna at 2.65GHz so plz help me ,how can i calculate exact dimensions of RDRA i.e. its length,width and height.
plz help me

You cannot analytically calculate the exact resonances for the rectangular DRA. Instead one often uses an approximate dielectric waveguide model to predict the resonance, Q-value, etc. As the RDRA is 3-dimensional you have some degrees of freedom, i.e. there are several length/height/width combinations which give the same resonance frequency.

For exact results you should use some numerical eigensolver, i.e. HFSS. I suggest you read some papers on DRAs, for example

Theoretical and experimental investigations on rectangular dielectric resonator antennas - K. Mongia

There are many more papers on DRAs, please search in the IEEE database.

can u help me--i need this paper---------------

R. K. Mongia and P. Bhartia, “Dielectric resonator antennas—A review
and general design relations for resonant frequency and bandwidth,” Int.
J. Microwave Millimeter-Wave Eng., vol. 4, pp. 230–247, July 1994.


can u send me it--------at-sdpt123_maity@yahoo.co.in

or u can upload it here also-----please-i need it-----------help me------