There are two ways in which this can be done:
Rather than having a number of discrete crystals, a monolithic crystal filter, MCF, uses a single crystal element and two sets of electrodes plated onto the surface. As such they become large and require careful design and assembly. However these designs require the use of a number of individual crystals - often six or eight are used to give the required performance. Traditionally a crystal filter is made from a number of discrete crystals. Surface mount monolithic crystal filterĬourtesy Murata Monolithic crystal filter: the basics Using technology akin to that of semiconductors, monolithic crystal filters are manufactured using a single quartz wafer to provide very high levels of performance. The monolithic crystal filter, MCF provides high levels of performance where bandpass filters are needed for applications including use within the intermediate frequency amplifier sections of radio base stations, and other forms of advanced radio receivers.Īlthough one option is to use a quartz crystal bandpass filter, monolithic filters are able to offer better performance and can be made much smaller.
#Monolithic crystal filter design how to#
Quartz crystals: xtals What is quartz How a crystal works Crystal overtone operation Quartz crystal frequency pulling Quartz crystal cuts Quartz ageing Crystal resonator manufacture How to specify a quartz crystal VCXO TCXO OCXO Crystal filter Monolithic crystal filter Ceramic resonator & filter Ceramic filter specifications Quartz Crystals, Xtals Tutorial Includes: Monolithic Crystal Filter: monolithic bandpass filter Monolithic crystal filter, MCF technology is used to provide a small and effective bandpass filter in applications like radio base stations and other high performance radio receivers.
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