Transversely-excited film bulk acoustic resonator matrix filters with input and output impedances matched to radio frequency front end elements
US11929733B2 · kind B2 · utility
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75References
22Claims
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Key dates
| Filing date | Oct 5, 2021 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Apr 22, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0057
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
There are disclosed matrix filters having an antenna port, receive ports and transmit ports. A receive matrix filter is coupled between each receive port and the antenna port; an a transmit matrix filter is coupled between the antenna port and each transmit port. An impedance at the receive port is matched to an input impedance of a low noise amplifier (LNA), an impedance at the transmit port is match to an output impedance of a power amplifier (PA), and an impedance at the antenna port is match an impedance of an antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.