Meander Dipole Antenna for GSM dual band (900 & 1800 MHz)

Hey,
I am required to design a GSM dual band Meander dipole Antenna but i didn't found any formula or stuff to calculate its length, width turns etc. I would really appreciate any help regarding this!

Thanks!

Hi , Do you find how can design length dipole for GSM 900 MHz?

Hello there,
sorry for late reply hope that still helps!