Passive active hybrid LC filter
US11894825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2022 |
| Grant date | Feb 6, 2024 |
| Priority date | — |
| Expiry date | Jun 14, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/18
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
This disclosure is directed to filtering in a transceiver of an electronic device. In some instances, active analog filters may be deployed in the transceiver of the electronic device to achieve greater linearity and/or reduce noise in the transceiver. However, as signal bandwidth grows increasingly larger, an active analog filter may consume excessive power. To remedy the excessive power consumption, a passive ladder LC filter may be used. Some LC ladder filters may include a limited quality factor (Q), which may lead to undesirable effects in the transceiver (e.g., voltage droop). To address these undesirable effects, certain components in the LC ladder filter may be relocated from an input port to a feedback chain of an amplifier coupled to the LC ladder filter. The new structure may enable components in the LC ladder filter to be tuned without causing additional voltage droop across the LC ladder filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.