A Novel 76.8375 MHz Crystal Filter Based on Third Overtone Crystal Units

Quartz crystal units (CUs) are the most popular oscillating components in high-quality crystal filters and oscillators, due to their electrical and mechanical characteristics. This paper considers design and realization of high quality 76.8375 MHz crystal filter based on third overtone quartz crystal units. In addition to the basic parameters, this filter also meets the special operational conditions of the environment (clime and mechanical conditions). Filter design and requested specifications are further explained as well as the resulting transfer function of the 76.8375 MHz filter.