tetra linearization

now i'm designing a Tetra handset on 800MHz, but the linearization IC is not found to fit the request. who can do me a favor, tell me which company i can buy the ic from. cartesian, digital predistorter, lnic, feedforward, and so on.
thank you!
and welcome you to discuss with me
gqwhut@hotmail.com[/img][/quote]

CML

www.cmlmicro.com

CMX980 OR CMX998