7 Threads found on edaboard.com: Plot 3db Bandwidth
I have to obtain the axial ratio bandwidth .But when I tried to plot this graph, there is no point below 3db and also shows some ripples at frequencies. What has to be done to improve the axial ratio plot. pls help me
RF, Microwave, Antennas and Optics :: 06-18-2015 04:02 :: Blesvin :: Replies: 0 :: Views: 204
I am not sure to check -3db BW by considering Loop gain or Closed loop gain plot.
The filter circuit is realized using feedback. Hence, I see no reason to measure/calculate/simulate the 3db BW not in this closed-loop configuration.
Analog Circuit Design :: 06-09-2015 15:32 :: LvW :: Replies: 8 :: Views: 488
If we want to determine the bandwidth at a given frequency f, we should determine the 3db fractional bandwidth.
according to the Shannon formula, we can calculate the bandwidth to be:
bandwidth at f =3db_bandwidth*f
on the other hand when plot the (...)
Digital communication :: 07-18-2011 04:49 :: sharlotte :: Replies: 5 :: Views: 851
For a nonlinear Class E Power Amplifier, if I want to check its 3db bandwidth,
do I just do a parametric sweep analysis of frequency of the input signal and see the frequency vs power gain plot?Use PSS Analysis with sweeping fundamental frequency which is a frequency of driving signal.
RF, Microwave, Antennas and Optics :: 05-26-2011 12:37 :: pancho_hideboo :: Replies: 1 :: Views: 1445
Consider a single real zero in the left half of the s-plane. This will have the form (s/z+1) ==> (jw/z+1) in time constant form. At low frequencies (w near 0), the magnitude of this term is approximately 1 ==> 0 db. At high frequencies (w/z >> 1), the magnitude of this term is approximately |w/z| ==> 20*log_10(|w/z|) db. At frequency w=w1, t
Elementary Electronic Questions :: 05-25-2007 11:21 :: powersys :: Replies: 1 :: Views: 849
If you have the specs of a comercial opamp look at the plot gain versus frequency and check the gain 3db below the DC gain.
Now, if you're simulating your opamp just perform an AC analysis and plot gain versus frequency and measure the gain in the same way.
Elementary Electronic Questions :: 04-12-2007 22:34 :: STOIKOV :: Replies: 8 :: Views: 1782
vary the input frequency and calculate output voltage and plot graph between
frequency and voltage ratio in db and find 3db bandwidth
Elementary Electronic Questions :: 03-13-2006 11:18 :: satyasri :: Replies: 1 :: Views: 987