Almost any coaxial cable will work to 2 GHz for some values of "work". Ordinary Rg-174 and RG-58 cables are normally specified as "up to 1 GHz." If all you care about is transmitting signals over a short distance (a few meters), they work fine at 2 GHz and even higher. Their impedance, loss, leakage, and phase stability are not great at high frequency due to the braided shield construction, but they usually will get the job done.
It's hard to say if those limitations will be an issue without knowing your application.