Filter device, RF front-end device and wireless communication device
US11606080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2020 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Sep 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0078
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A filter device, an RF front-end device and a wireless communication device are provided. The filter device includes a substrate, a passive device and at least one resonance device, wherein the passive device has a first side and a second side opposite to the first side, the substrate is located on the first side, and the at least one resonance device is located on the second side. The RF filter device formed by integrating the resonance device (such as an SAW or BAW resonance device) and the passive device (such as an IPD) can broaden the pass-band 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.