Radio frequency circuit supporting carrier aggregation
US11121736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2019 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Apr 26, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/44
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) circuit is provided. The RF circuit may include a variety of RF filters organized into a number of filter banks and configured to support carrier aggregation (CA) in a variety of band combinations. In examples discussed herein, the RF circuit is configured to utilize separate receive and transmit filters for filtering an RF receive signal and an RF transmit signal in a time-division duplex (TDD) band, respectively. By employing separate receive and transmit filters for the TDD band, as opposed to using an integrated receive-transmit filter, it may be possible to implement the receive and transmit filters in the RF circuit with improved impedance matching, interference rejection, and insertion loss without increasing a footprint of the RF circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.