# US 2022/0045833 A1 · Devices and methods related to radio-frequency front-end architecture for carrier aggregation of cellular bands

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- Number: US 2022/0045833 A1
- Document ID: US20220045833A1
- Status: Published application
- Kind: A1
- Application number: 17/378,373
- Filed: 2021-07-16
- Published: 2022-02-10
- Earliest claimed: 2014-08-13
- Assignees: Skyworks Solutions, Inc.
- Applicants: Skyworks Solutions, Inc.
- Inventors: Ethan CHANG; Roman Zbigniew ARKISZEWSKI; John G. FREED; Edward James ANTHONY; Reza KASNAVI
- Web page: https://patentgrep.com/patent/US20220045833A1

## CPC

- H04L 5/14: Two-way operation using the same type of signal, i.e. duplex
- H04B 1/48: in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter {(H04B1/46 takes precedence)}
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/1469: {using time-sharing}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04B: TRANSMISSION

## Abstract

Circuits and methods related to radio-frequency (RF) architectures having carrier aggregation. In some implementations, a method for performing carrier aggregation (CA) can include providing a duplexer configured to provide duplexing functionality for a first frequency band and a second frequency band with a common antenna. The method can further include providing a first amplification path and a second amplification path coupled to respective ports of the duplexer, each of the first amplification path and the second amplification path configured to amplify a signal in its respective frequency band, each amplification path including a transmit/receive (TX/RX) switch configured to provide time-division duplexing (TDD) functionality for the amplified signal and a received signal. In some implementations, the first frequency band includes a B39 band, and the second frequency band includes a B41 band.

## Claims

### Claim 1

A method for performing carrier aggregation (CA) comprising:
providing a duplexer configured to provide duplexing functionality for a first frequency band and a second frequency band with a common antenna; and
providing a first amplification path and a second amplification path coupled to respective ports of the duplexer, each of the first amplification path and the second amplification path configured to amplify a signal in its respective frequency band, each amplification path including a transmit/receive (TX/RX) switch configured to provide time-division duplexing (TDD) functionality for the amplified signal and a received signal.