Invention Grant
- Patent Title: Frequency domain based digital cancellation of modulated spur interference in LTE-CA transceivers
-
Application No.: US15474243Application Date: 2017-03-30
-
Publication No.: US10587349B2Publication Date: 2020-03-10
- Inventor: Ram Sunil Kanumalli , Andreas Mayer , Ahmed Elmaghraby , Mario Huemer , Burkhard Neurauter
- Applicant: Intel IP Corporation
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Eschweiler & Potashnik, LLC
- Main IPC: H04L5/14
- IPC: H04L5/14 ; H04B15/00 ; H04B1/525 ; H04L25/02 ; H04B1/12

Abstract:
A transceiver that implements a frequency domain cancellation of a transmit (Tx)-modulated spur associated with a transceiver is disclosed. The transceiver comprises a baseband receive (Rx) path configured to propagate a receive signal in frequency domain, associated with an Rx signal path of the transceiver, forming a baseband Rx signal, wherein the baseband Rx signal comprises a wanted Rx signal and an unwanted transmit (Tx) modulated spur. The transceiver further comprises a baseband Tx path configured to propagate a Tx signal in frequency domain, associated with the Tx signal path of the transceiver, thereby forming a baseband Tx signal. In addition, the transceiver comprises a cancellation circuit coupled to the baseband Rx path, configured to receive the baseband Rx signal and the baseband Tx signal, and generate a cancellation signal based thereon, in order to cancel the unwanted Tx modulated spur from the baseband Rx signal.
Public/Granted literature
- US20180287719A1 Frequency Domain Based Digital Cancellation of Modulated Spur Interference in LTE-CA Transceivers Public/Granted day:2018-10-04
Information query