power separate design

Hello guy:

Do you know how to design diffence Attenuators level for power separate?

one path Attenuator level is 6dB,
one path Attenuator level is 10dB,

BR,:D

Hello guy:

I can"t use PI-attenuator circuit in this design.
Maybe can't design diffence Attenuators level of power separate?(reference my picture)

http://chemandy.com/calculators/pi_a...calculator.htm