yixiusky
Member level 2
hello, i would like to ask the stability problem of my gm-c filter, thank you very much for your hlep^^
filter type: 4th order biquad gm-c bandpass filter
center frequency: 900MHz
bandwidth:40MHz
my way to test stability is use "trans simulation", after check, is it not oscillate.
but this filter works at high frequency. and when we check the RF block.like LNA Mixer, we always use SP simulation to check K facor is large than 1 or not. but when i test the k factor of my filter. at some frequency the k factor is smaller than 1. Therefor i would like to ask, does this mean my filter will oscillate?
thank you very much ^^
filter type: 4th order biquad gm-c bandpass filter
center frequency: 900MHz
bandwidth:40MHz
my way to test stability is use "trans simulation", after check, is it not oscillate.
but this filter works at high frequency. and when we check the RF block.like LNA Mixer, we always use SP simulation to check K facor is large than 1 or not. but when i test the k factor of my filter. at some frequency the k factor is smaller than 1. Therefor i would like to ask, does this mean my filter will oscillate?
thank you very much ^^
