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US 4,306,204 AGranted
Bandpass mechanical filter
AssigneeRockwell International Corporation
InventorRobert A. Johnson
Life of this patent
Estimating the term…
Abstract
A mechanical bandpass filter has a first resonator which is designed to resonate at a first frequency and a second resonator which is designed to resonate at a second frequency. The two resonators are electrically connected together and the input signal is applied to the first resonator and the filtered signal is removed from an electrical connection to the second resonator.
Claims18
A mechanical bandpass filter, comprising:
- a first resonator means for resonating at a first frequency f.sub.1 having a first nodal point and a second nodal point around which the first resonator means flexes;
- a second resonator means for resonating at a second frequency f.sub.2 having a first nodal point and a second nodal point around which the second resonator means flexes;
- means for acoustically connecting the first resonator means to the second resonator means;
- means for applying an electrical signal to the first resonator means:
- means for coupling the electrical signal from the first resonator means to the second resonator means;
- and
- means for removing the electrical signal from the second resonator.
4 more elements
Dependencies are inferred from the claim text.