There are many 80GHz +/- systems for short haul backbone links started at 1Gbps and these were marketed as wireless fiber for building to building intercity type connections. They have a "pencil" shaped beam and suffer from rain fade / sand storms / etc but are used in the field for special cases.

Heres a quick example: [1] http://www.aowireless.com/about-us/wireless-partners/wireles...