公开(公告)号：US10587349B2

公开(公告)日：2020-03-10

申请号：US15474243

申请日：2017-03-30

Applicant: Intel IP Corporation

Inventor： Ram Sunil Kanumalli ,  Andreas Mayer ,  Ahmed Elmaghraby ,  Mario Huemer ,  Burkhard Neurauter

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.

公开(公告)号：US20180287719A1

公开(公告)日：2018-10-04

申请号：US15474243

申请日：2017-03-30

Applicant: Intel IP Corporation

Inventor： Ram Sunil Kanumalli ,  Andreas Mayer ,  Ahmed Elmaghraby ,  Mario Huemer ,  Burkhard Neurauter

IPC: H04B15/00 ,  H04L5/14 ,  H04B1/525 ,  H04L25/02

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.

公开(公告)号：US09413402B1

公开(公告)日：2016-08-09

申请号：US14750640

申请日：2015-06-25

Applicant: Intel IP Corporation

Inventor： Andreas Mayer ,  Ram Sunil Kanumalli

IPC: H04L27/06 ,  H03D1/04 ,  H04B1/12 ,  H04B1/00

CPC classification number: H04B1/12 ,  H03D1/04 ,  H04B1/0007 ,  H04B1/0017 ,  H04B1/28 ,  H04L27/3863

Abstract: A low IF receiver for operation at an intermediate frequency (IF), comprises an antenna port configured to receive a receive signal comprising a wanted RF signal at an RF frequency and a blocker RF signal at a mirror image frequency of the wanted RF signal with respect to a frequency of an local oscillator (LO) signal, from an antenna. Further, the low IF receiver comprises a first mixer component configured to down convert the wanted RF signal and the blocker RF signal to an intermediate frequency (IF) signal, based on the frequency of the LO signal, wherein the IF signal comprises a wanted IF signal at a first intermediate frequency and a blocker IF signal at a second intermediate frequency and a second mixer component configured to receive the IF signal, separate the IF signal into the wanted IF signal and the blocker IF signal, and provide the wanted IF signal at a first output thereof and the blocker IF signal at a second output thereof, based on a tuning signal. In addition, the low IF receiver comprises a power estimation component configured to receive the blocker IF signal, measure a power of the blocker IF signal and select the frequency of the LO signal to be applied to the first mixer component from a plurality of LO frequencies, based on the measured power of the blocker IF signal.

Abstract translation: 用于在中频（IF）下操作的低IF接收机包括：天线端口，被配置为接收包含RF频率的有用RF信号的接收信号，以及所需RF信号的镜像频率处的阻塞RF信号， 从天线到本地振荡器（LO）信号的频率。 此外，低IF接收机包括第一混频器部件，其被配置为基于LO信号的频率将所需的RF信号和阻断器RF信号下变频到中频（IF）信号，其中IF信号包括有用的IF 在第一中频处的信号和在第二中频处的阻塞IF信号和被配置为接收IF信号的第二混频器分量，将IF信号分离成有用的IF信号和阻塞IF信号，并将所需的IF信号提供在 其第一输出和其第二输出端的阻塞IF信号，基于调谐信号。 另外，低IF接收机包括被配置为接收阻塞器IF信号的功率估计部件，测量阻塞器IF信号的功率，并从多个LO频率中选择要施加到第一混频器部件的LO信号的频率 ，基于阻塞IF信号的测量功率。