some questions about broadband RF Power Amplifiler matching

In the broadband matching of PA, i achieve a matching network for broadband ,about 200MHz@2GHz,though the impedance of the PA is not fit for broadband(because for PA impedance, the the real part is much less than imaginary part ,in other words,the Q is so high), BUT to get this bradband i have to place a capacitator about 10pF or more shuntted in the circult, and i did it.

here is my question: in practice

if the 10pF capacitator is too large for the circult for the work frequency at 2Ghz? because up to now ,i haven't seen a shunt capacitator like this in the PA match networks, i think the shunt capacitator value is so high, the impedance will much small,so the RF power will loss to ground through it.

is that right?

or here we should compare the capacitator's impedance with the circuit impedance at the piont the shunt capacitator joint? if capacitator's impedance is much less than the circuit impedance at the piont the shunt capacitator joint,this is not a problem.

is this right?

Forward to receiving your reply!!!! thank you.

my email :mayunxuan@datangmobile.cn

u also can email me.

any body?

Re: some questions about broadband RF Power Amplifiler matc

Is common to use high capacitor values in Power Amplifiers design, due to their low impedances that have to be compensated.
Anyway, your circuit bandwidth (200MHz @ 2GHz, 10%), actually is not very broadband to implicate special issues.