Crystal Ladder Filters
{"Image DocumentName": "Crystal Ladder Filters", "Image ImageDescription": "For band-pass filters, the Q of the filter. elements limits the minimum-achievable. bandwidth of the filter. If crystals are used. in place of other elements, their very-high. Q values allow filters to be built which have. very narrow bandwidths. C12. C23. The equivalent circuit for a crystal is shown at right. LS, CS, and RS are called the motional inductance, capacitance, and resistance of the crystal. CP is the. parallel plate capacitance due to the two electrodes. of the crystal and the quartz dielectric between them. It is easy to see that each crystal forms a tuned circuit, and using them in a crystal ladder filter results in a. configuration much like the previously-discussed band- pass filter, but with a narrower bandpass because of the higher Q of the crystals. LS. CS. RS. CP. Kit Building Class Lesson 5.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}