Help me to design the RFPA,Thanks!

Hello,I am trying to design a discrete RFPA to put out greater than or equal 25 dBm(P1dB) at 2.4~2.5 GHz and gain is greater than equal 26 dB for very low cost as far as possible .The operation voltage is 3.3 V .Anyone have some design suggestions? Thank you very much!

http://www.nxp.com/documents/data_sheet/BGA7027.pdf

Thanks,but i must use the transistors and other component such as capacitances and inductance to design the RFPA.How about the two stages PA,the first stage is LNA and second stage is power output ? So which transistor should i choose ?

You can chose a lower power MMIC (as BGA6489) to drive the BGA7027.
Check this list of options:

http://www.nxp.com/ps/#/i=50950

These MMIC's from NXP are pretty stable and designing a cascade amplifier it's not very hard. Use the S-parameters provided in the datasheets.