Looking for 20mb and up Wireless Vendor

Can you help me find a wireless technolgy that can provide 20, 30, and even 50mb bandwith that is point to multi-point?

Unlicensed or Licensed is appicable.

My point to point links will be 100mb licensed. But am in need of high bandwidth
point to multi-point for an extensive project.

I have a client who would like to install a high bandwith of 20mb and more to at least a 10 square mile area with the possibilty of grwoing this environment several fold.

I am looking for a response ASAP.

Thank you,
Michael E. Lewis
MonoComm, Inc.
(815) 434.2035