Patent ID: 8093916

Claim:
A method of measuring a semiconductor device comprising steps of: providing a silicon-on-insulator (SOI) substrate with at least a body-tied (BT) SOI device and a body-tied (BT) dummy device for measurement, where in the BT dummy device comprises a first conductive type source/drain heavily doped region and a dummy gate, and the dummy is not positioned on the first conductive type source/drain heavily doped region; measuring scattering parameters (S-parameters) and tunneling currents (I gb ) of the BT SOI device and the BT dummy device, respectively; subtracting I gb of the BT dummy device from that of the BT SOI device to obtain I gb of a floating body (FB) SOI device; filtering characteristics of the BT dummy device out to extract S-parameters of the FB SOI device; and analyzing the S-parameters of the FB SOI device to obtain gate-related capacitances (C gb ) of the FB SOI device.