4. (2 points) Define Q- factor of a filter circuit. The figure below presents two sets of data for two different Q-values - one for Q = 2 and the other for Q = 10. Label them appropriately. (a) 0.8- 0.6 - Normalized Voltage Gain 0.4 - O 0.2 O O O 0.0- 100 1000 10000 Frequency (Hz) 5. (2 points) Draw the outputs of phase sensitive detection in the following two cases (i.e. when phase difference = 0 and 180"). Signal Reference Mixer output , Vo