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I am a little confuse here.
What is effective noise bandwidth? I saw some definitions stated that:
"Effective Noise Bandwidth of a filter is defined as the width of an ideal filter which, with an identical reference amplitude gain, would transmit the same power from a white noise source."...
If I have an OP AMP circuit with a DC gain of -31dB and roll off at 10MHz and my phase angle reach -180 at 3MHz, is my circuit considered stable?
Thank you very much.
Re: HP4396B Network Analyzer
Thanks for the information.
Could I confirm that if we select "B/R", and by doing a frequency sweep, are we actually measuring the power transfer function of the circuit with reference to R?
How about the measured phase? What does it physically mean...
I know that we can determine the stability of an amplifier with negative feedback loop by evaluating the gain and phase margin.
How do we determine the stability of an amplifier with positive feedback loop?
HP4396B Network Analyzer
I am just beginning to use a network analyzer.
The model is HP 4396B network/spectrum analyzer.
I started by trying to measure the input power at the R and B channel by changing the RF power source.
The RF source, R and B channel are connected to a two way power...