Filter Q Factor Explained
- Posted by doEEEt Media Group
- On August 11, 2022
- 0
The term “quality facto”,r or Q factor, is used as a shorthand figure of merit (FOM) for RF filters.
In short, the Q factor is expressed as the ratio of stored versus lost energy per oscillation cycle.
More specifically, the Q factor generally describes specifications such as the steepness of skirts or the selectivity and how low the insertion loss is. Overall losses through a resonator increase as the Q factor drops and will increase more rapidly with frequency for lower values of resonator Q.