Surface Mounted Resonator

This article or section is not worded in a generally understandable manner. The shortcomings are described under Discussion: Surface Mounted Resonator . If you remove this block, founded this on the article talk page, and fill up the project page section created automatically Wikipedia: Incomprehensible Article #Surface mounted resonator to{{ Done | 1 = ~~~~}}.

The Surface Mounted Resonator  (SMR), often also referred to as Solidly Mounted Resonator , is a solid-state resonator which is designed as a surface-mountable component ( SMD ). The isolation from the substrate takes place by means of several acoustic mirrors, which consist of an alternating sequence of 1/4 wavelength layers (acoustically high and low-impedance layers). As a rule, materials such as silicon dioxide and tungsten are used for this, which - alternately built up - achieve good insulation with just a few layers.

An acoustic resonator like an SMR can function as a transducer (or transducer) that converts electrical signals into acoustic signals and / or vice versa. Acoustic resonators such as SMR or thin-film resonators of the FBAR type can be used for a large number of applications. This includes applications in cell phones, organizers ( PDA ), game consoles , notebooks and other portable communication devices. SMR or FBAR are installed there as electronic filters, duplexers and voltage converters .

Bandpass filters made from SMR or FBAR resonators have the potential to meet the high requirements of current and future mobile radio systems. With their maximum operating frequency of around 10 GHz and good temperature stability, they offer an alternative to established microacoustic filter technologies.

literature

• K. Lakin, K. McCarron, and R. Rose: Solidly Mounted Resonators and Filters. In: Proc. IEEE Ultrason. Symp. 1995, pp. 905-908.