Filter device, RF front-end device and wireless communication device
US11646715B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2020 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Jan 8, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention provides a filter device, an RF front-end device and a wireless communication device. The filter device comprises a substrate, at least one resonance device, a passive device and a connector, wherein the at least one resonance device has a first side and a second side opposite to the first side, the substrate is located on the first side, and the passive device is located on the second side. The at least one resonance device is connected to the passive device through the connector. The RF filter device formed by integrating the resonance device (such as an SAW resonance device or a BAW resonance device) and the passive device (such as an IPD) in one die can broaden the passband width, has a high out-of-band rejection, and occupies less space in an RF front-end chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.