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US 6,489,864 B2Granted
Filter for electric signals
AssigneeRobert Bosch GmbH
InventorsWilhelm Frey, Karsten Funk
Life of this patent
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Abstract
A filter for electric signals has a substrate, a vibrating body capable of vibrating with at least two antipodes deflected in phase opposition relative to the substrate and has electrodes connected to a signal input and a signal output for electric excitation and for detection of the vibration of the vibrating body. The electrodes for detecting the vibration, each assigned to antipodes deflected in phase opposition, are connected to two separate terminals of the signal output.
Claims13
A filter for an electric signal, comprising:
- a substrate;
- a vibrating body capable of vibrating with at least two antipodes deflected in phase opposition relative to the substrate;
- and
- a plurality of electrodes arranged on the same surface of the substrate facing the vibrating body and including a first set of electrodes connected to a signal input and a second set of electrodes connected to a signal output, wherein:
- the first set of electrodes is capable of performing an electric exciting of a vibration of the vibrating body,
- the second set of electrodes detects the vibration of the vibrating body, and
- each of the second set of electrodes is assigned to the at least two antipodes and is connected to two separate terminals of the signal output.
4 more elements
Dependencies are inferred from the claim text.