Adjustable bandwidth high pass filter for large input signal, low supply voltage applications
US6731160B1 · kind B1 · utility
14Cited by
15References
20Claims
0Family size
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Key dates
| Filing date | Nov 13, 2000 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Nov 13, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H11/245
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Often programmable gain attenuators (PGAs) are combined with high pass filters. Adjustment of the highpass filter however can have unintended effects, such as changing the step size of the PGA. By placing the resistance of the highpass filter in parallel with a programmable attenuator divider, the steps of the PGA can be minimally affected as the highpass frequency is adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.