Composite filter and communication device
US12388409B2 · kind B2 · utility
0Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 2021 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | Apr 19, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/72
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A splitter simultaneously inputs two signals having different frequencies within a transmission band to a transmission terminal. A transmission filter system and a reception filter system that are connected to an antenna terminal share a first hybrid coupler. Two transmission filters and a second hybrid coupler are located between the first hybrid coupler and the transmission terminal. A reception filter is located between the first hybrid coupler and the reception terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.