wccheng
Full Member level 5
Dear all,
I have designed a LNA which is working at 2.6GHz. It is included the ESD PAD. I have done two extracted view. The first one is whole module extraction included the ESD PAD and PAD ring. The second one is extracted individually. That means LNA has one extracted view, ESD PAD has own extracted view. Then, I simulate the circuit using hierarchy mode. The simulated NF result shows that the whole module extracted post layout is higher than the individual extracted one. The simulated value of the whole module is 3.4dB. The individual extracted one is 2.5dB. The measured one is 4.8dB. Does the pad ring introduce so much noise in the circuit? Or, I should use the power cut and give a independent PAD for the RF input?
Thanks
wccheng
I have designed a LNA which is working at 2.6GHz. It is included the ESD PAD. I have done two extracted view. The first one is whole module extraction included the ESD PAD and PAD ring. The second one is extracted individually. That means LNA has one extracted view, ESD PAD has own extracted view. Then, I simulate the circuit using hierarchy mode. The simulated NF result shows that the whole module extracted post layout is higher than the individual extracted one. The simulated value of the whole module is 3.4dB. The individual extracted one is 2.5dB. The measured one is 4.8dB. Does the pad ring introduce so much noise in the circuit? Or, I should use the power cut and give a independent PAD for the RF input?
Thanks
wccheng