Patent attributes
Disclosed are architectures and methods for enabling additional signal path. In some embodiments, a frequency division duplexing (FDD) system can include a transmit (Tx) path configured for passage of a Tx signal in a first frequency band during operation in a first mode; a receive (Rx) path configured for passage of an Rx signal in a second frequency band during operation in a second mode, with the second mode being different than the first mode, and the second frequency band having at least some overlap with the first frequency band; and a bandpass filter disposed along the Tx path and along the Rx path, with the bandpass filter being configured to filter the Tx signal when in the first mode and to filter the Rx signal when in the second mode. Such a system can be advantageous in wireless devices capable of operating in different geographic locations.
