Maxim make a range of chips you may be interested in. Start with;

http://www.maxim-ic.com/Wireless.cfm

I have been looking with interest at one of there 900MHz products. It
takes a single IF I/O (eg 10.7MHz) and can produce QPSK/QAM etc at
around 2dBm. I have been looking at a transceiver chip at;

http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1773

Havent looked at their 2.4GHz offerings (if any)

Cheers Bob VK2YQA

mazerom wrote:

hello guys,

im into designing a base station that needs a transceiver with FM as
well as digital modulation ability(or Spread spectrum) at 2.4ghz.i
found 3 products;winceiver(we2408),numa technologies(nt2924) and
toshiba(tb2301m)
any information for additional chipsets that i may venture with?
thanks a lot!

mazerom