Carrier aggregation front end architecture
US9118376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2013 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Sep 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2210/036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Radio frequency (RF) front end circuitry includes a notch diplexer. The notch diplexer includes a high pass filter coupled between a high band port and an antenna port, and a low pass notch filter coupled between a low band port and the antenna port. The high pass filter is adapted to receive a high band receive signal having a high band carrier frequency at the antenna port, and pass the high band receive signal to the high band port. The low pass notch filter is adapted to receive a low band transmit signal having a low band carrier frequency at the low band port, and attenuate distortion in the low band transmit signal about a notch stop band before passing the low band transmit signal to the antenna port. According to one embodiment, the notch stop band includes the high band carrier frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.