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US 2014/0111176 A1Published application
Power supply filter and electronic circuitry including the same
AssigneePanasonic Corporation
InventorToshiro NISHIMURA
Life of this patent
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Abstract
A power supply filter includes a first filter circuit and a second filter circuit connected in parallel with each other across supply voltage input terminals. The first filter circuit has such a low-pass characteristic that a gain of the first filter circuit is higher than that of the second filter circuit in a first band which is a low band. The second filter circuit includes a serially-inserted resistive element and has such a high-pass characteristic that the gain of the second filter circuit is higher than that of the first filter circuit in a second band which is a high band.
Claims7
A power supply filter comprising:
- a first filter circuit and a second filter circuit connected in parallel with each other across supply voltage input terminals, wherein
- the first filter circuit has such a low-pass characteristic that a gain of the first filter circuit is higher than that of the second filter circuit in a first band which is a low band, and
- the second filter circuit includes a serially-inserted resistive element and has such a high-pass characteristic that the gain of the second filter circuit is higher than that of the first filter circuit in a second band which is a high band.
Dependencies are inferred from the claim text.