Feb 23, 2016 #1 L laperla Full Member level 4 Joined Oct 17, 2009 Messages 191 Helped 2 Reputation 4 Reaction score 3 Trophy points 1,298 Activity points 2,364 I want to measure external quality factor in ADS in 2 ways 1) Center frequency/bandwidth 2) by this formula==> Q=pi*freq*delay(S(1,1)) but the answers aren't same and have different..why? which one is correct?
I want to measure external quality factor in ADS in 2 ways 1) Center frequency/bandwidth 2) by this formula==> Q=pi*freq*delay(S(1,1)) but the answers aren't same and have different..why? which one is correct?
Feb 29, 2016 #2 E edf Full Member level 2 Joined Feb 21, 2002 Messages 120 Helped 21 Reputation 42 Reaction score 18 Trophy points 1,298 Activity points 700 laperla said: I want to measure external quality factor in ADS in 2 ways 1) Center frequency/bandwidth 2) by this formula==> Q=pi*freq*delay(S(1,1)) but the answers aren't same and have different..why? which one is correct? Click to expand... One possible reason is that the second formula doesn't distinguish between transmission delay and storage delay. You could arbitrarily add additional length of 50 Ohm TLine between the measurement port and the "Q" circuit.
laperla said: I want to measure external quality factor in ADS in 2 ways 1) Center frequency/bandwidth 2) by this formula==> Q=pi*freq*delay(S(1,1)) but the answers aren't same and have different..why? which one is correct? Click to expand... One possible reason is that the second formula doesn't distinguish between transmission delay and storage delay. You could arbitrarily add additional length of 50 Ohm TLine between the measurement port and the "Q" circuit.