Has anybody design a preditortion circuit in PA using diode?

for example, using AGILENT sckottky diode hsmp2820 in WCDMA design......could u tell me how to design the bias circuit to achieve the best performance.....thanks...

http://www.avagotech.cn/pc/downloadDocument.do?id=3841
http://www.avagotech.cn/pc/downloadDocument.do?id=3388