公开(公告)号：US20140270032A1

公开(公告)日：2014-09-18

申请号：US13829232

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Li Liu ,  Praveen-Kumar Sampath ,  Lai Kan Leung ,  Chiewcharn Narathong ,  Soon-Seng Lau ,  Ketan Humnabadkar ,  Raghu Narayan Challa ,  Devavrata Vasant Godbole

IPC: H04L7/00 ,  H04L7/033

CPC classification number: H04L7/0331 ,  H03B21/01 ,  H03D3/009 ,  H04W52/02 ,  H04W52/0209 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164

Abstract: Techniques for detecting and correcting phase discontinuity of a local oscillator (LO) signal are disclosed. In one design, a wireless device includes an LO generator and a phase detector. The LO generator generates an LO signal used for frequency conversion and is periodically powered on and off. The phase detector detects the phase of the LO signal when the LO generator is powered on. The detected phase of the LO signal is used to identify phase discontinuity of the LO signal. The wireless device may further include (i) a single-tone generator that generates a single-tone signal used to detect the phase of the LO signal, (ii) a downconverter that downconverts the single-tone signal with the LO signal and provides a downconverted signal used by the phase detector to detect the phase of LO signal, and (iii) phase corrector that corrects phase discontinuity of the LO signal in the analog domain or digital domain.

Abstract translation: 公开了用于检测和校正本地振荡器（LO）信号的相位不连续性的技术。 在一种设计中，无线设备包括LO发生器和相位检测器。 LO发生器产生用于频率转换的LO信号，并且周期性地通电和关断。 当LO发生器通电时，相位检测器检测LO信号的相位。 LO信号的检测相位用于识别LO信号的相位不连续性。 无线设备还可以包括（i）生成用于检测LO信号的相位的单音信号的单音发生器，（ii）下变频器，其使用LO信号对单音信号进行下变频，并提供 相位检测器用于检测LO信号的相位的下变频信号，以及（iii）校正模拟域或数字域中的LO信号的相位不连续性的相位校正器。

公开(公告)号：US09344270B2

公开(公告)日：2016-05-17

申请号：US13829232

申请日：2013-03-14

Applicant: QUALCOMM Incorporated

Inventor： Li Liu ,  Praveen-Kumar Sampath ,  Lai Kan Leung ,  Chiewcharn Narathong ,  Soon-Seng Lau ,  Ketan Humnabadkar ,  Raghu Narayan Challa ,  Devavrata Vasant Godbole

IPC: H03D3/24 ,  H04L27/20 ,  H04L7/033 ,  H03B21/01 ,  H04W52/02

CPC classification number: H04L7/0331 ,  H03B21/01 ,  H03D3/009 ,  H04W52/02 ,  H04W52/0209 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/164

Abstract: Techniques for detecting and correcting phase discontinuity of a local oscillator (LO) signal are disclosed. In one design, a wireless device includes an LO generator and a phase detector. The LO generator generates an LO signal used for frequency conversion and is periodically powered on and off. The phase detector detects the phase of the LO signal when the LO generator is powered on. The detected phase of the LO signal is used to identify phase discontinuity of the LO signal. The wireless device may further include (i) a single-tone generator that generates a single-tone signal used to detect the phase of the LO signal, (ii) a downconverter that downconverts the single-tone signal with the LO signal and provides a downconverted signal used by the phase detector to detect the phase of LO signal, and (iii) phase corrector that corrects phase discontinuity of the LO signal in the analog domain or digital domain.

Abstract translation: 公开了用于检测和校正本地振荡器（LO）信号的相位不连续性的技术。 在一种设计中，无线设备包括LO发生器和相位检测器。 LO发生器产生用于频率转换的LO信号，并且周期性地通电和关断。 当LO发生器通电时，相位检测器检测LO信号的相位。 LO信号的检测相位用于识别LO信号的相位不连续性。 无线设备还可以包括（i）生成用于检测LO信号的相位的单音信号的单音发生器，（ii）下变频器，其使用LO信号对单音信号进行下变频，并提供 相位检测器用于检测LO信号的相位的下变频信号，以及（iii）校正模拟域或数字域中的LO信号的相位不连续性的相位校正器。