sq patch resonator for designing a BPF

[phornix]

sq fix resonator for designing a BPF

hi there , can anyone help up in advicing me how to derive the physical length of a 60Ghz half wavelength patch resonator on top of a dielectric layer of 100um with Er=5.9 and loss tangent of 0.002

thanks

Added after 1 minutes:

correction to the above post, its a square patch resonator