Hi,
I simulate a passive high-pass filter with a 1 pF capacitor and a 50 Ohm resistor. I simulate reom 10 to 100 GHz With the waveform tool I measure the -3 dB frequency to be 3.19 GHz and then I tried to measure with a .measure statement from a file. The measure statement I took from the manual:
.MEAS AC tmp max mag(V(out)); find the peak response .MEAS AC meas_3db trig mag(V(out))=3Dtmp/sqrt(2)
The measure report windos tell me: tmp: MAX(V(out))=3D(-0.0043981dB,1.82317=B0) FROM 10 TO 1e+011 meas_3db=3D9.68205e+010 FROM 3.17955e+009 TO 1e+011
What is the number directly behind the =3D? (9.68205e+010)
-- Svenn