please you give information about operate frequency and another parameter from spiral rectangular patch antenna.
also you can use from software ie3d for simulate spiral rectangular antenna.
i can give result from spiral for your with software ie3d.[/quote]
The antenna must work at 900MHz, 1800MHz, 2.4 GHz and 3.5 GHz.I've done one without calculating.This one is operating at 1800 MHz.But I don't know where I must put the MEMS switches and change the operating frequency to which I wanted.