Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
I think your best bet would be to go for a philips (ex plessey) kind of chip.
A TSA5055 for example you easily get you up to 2.4 ghz.
I2C control is easy to implement using i AVR or PIC series of mcu's.
Also,, there are plenty of homebrewed circuits including files for the mcu's at most of the amatuer atv sites.