公开(公告)号：US09094034B2

公开(公告)日：2015-07-28

申请号：US14483137

申请日：2014-09-10

Applicant: MEDIATEK INC.

Inventor： Sheng-Hao Chen ,  Yen-Chuan Huang ,  Min-Hua Wu ,  Chun-Hao Liao ,  Hung-Pin Ma ,  Tzu-Hao Yu ,  Jen-Che Tsai

IPC: H03M1/66 ,  H03M1/06 ,  H03M1/74

CPC classification number: H03M1/0626 ,  H03M1/66 ,  H03M1/74 ,  H03M9/00

Abstract: A digital to analog converting system, which comprises: a first data converting circuit, for receiving a first digital data stream transmitted at a first clock frequency, for converting the first digital data stream to a plurality of second digital data streams transmitted at a second clock frequency, and for outputting the second digital data streams in parallel; a second data converting circuit, for receiving the second digital data streams from the first data converting circuit, and for converting the second digital data streams to a third digital data stream transmitted at a third clock frequency; and a first digital to analog converter, for converting the third digital data stream to a first output analog data stream. The second clock frequency is lower than the first clock frequency and the third clock frequency.

Abstract translation: 一种数模转换系统，包括：第一数据转换电路，用于接收以第一时钟频率发送的第一数字数据流，用于将第一数字数据流转换为在第二时钟发送的多个第二数字数据流 并且用于并行地输出第二数字数据流; 第二数据转换电路，用于从第一数据转换电路接收第二数字数据流，并将第二数字数据流转换成以第三时钟频率发送的第三数字数据流; 以及第一数模转换器，用于将第三数字数据流转换为第一输出模拟数据流。 第二个时钟频率低于第一个时钟频率和第三个时钟频率。

公开(公告)号：US20130287082A1

公开(公告)日：2013-10-31

申请号：US13795130

申请日：2013-03-12

Applicant: MEDIATEK INC.

Inventor： Kuo-Hao Chen ,  Chun-Hao Liao ,  Pei-Shiun Chung ,  Hsin-Hung Chen

IPC: H04L7/00

CPC classification number: H04L25/03 ,  H04L7/0037 ,  H04L27/364 ,  H04L27/3863

Abstract: A method for compensating the frequency dependent phase imbalance in a receiver is provided. The receiver downconverts an input signal to generate the signal r(t). The signal r(t) has an in-phase component rI(t) and a quadrature component rQ(t). A first test signal with a first carrier frequency is applied as the input signal of the receiver to obtain a first phase imbalance I. A second test signal with a second carrier frequency is applying as the input signal of the receiver to obtain a second phase imbalance. An IQ delay mismatch Δt of the receiver according to the difference of the second and the first phase imbalances and the difference of the second and the first carrier frequencies is obtained. The in-phase component rI(t) and the quadrature component rQ(t) of the signal r(t) corresponding to other input signal is compensated according to the obtained IQ delay mismatch Δt.

Abstract translation: 提供一种用于补偿接收机中与频率相关的相位不平衡的方法。 接收机下变频输入信号以产生信号r（t）。 信号r（t）具有同相分量rI（t）和正交分量rQ（t）。 施加具有第一载波频率的第一测试信号作为接收机的输入信号以获得第一相位不平衡I.具有第二载波频率的第二测试信号作为接收机的输入信号被施加以获得第二相位不平衡 。 获得IQ延迟不匹配根据第二相位和第一相位不平衡的差异以及第二和第一载波频率的差的接收器的差值。 根据获得的IQ延迟不匹配Deltat来补偿与其他输入信号相对应的信号r（t）的同相分量rI（t）和正交分量rQ（t）。

公开(公告)号：US09686103B2

公开(公告)日：2017-06-20

申请号：US13795130

申请日：2013-03-12

Applicant: MEDIATEK Inc.

Inventor： Kuo-Hao Chen ,  Chun-Hao Liao ,  Pei-Shiun Chung ,  Hsin-Hung Chen

IPC: H04L25/03 ,  H04L7/00 ,  H04L27/38 ,  H04L27/36

CPC classification number: H04L25/03 ,  H04L7/0037 ,  H04L27/364 ,  H04L27/3863

Abstract: A method for compensating the frequency dependent phase imbalance in a receiver is provided. The receiver downconverts an input signal to generate the signal r(t). The signal r(t) has an in-phase component rI(t) and a quadrature component rQ(t). A first test signal with a first carrier frequency is applied as the input signal of the receiver to obtain a first phase imbalance I. A second test signal with a second carrier frequency is applying as the input signal of the receiver to obtain a second phase imbalance. An IQ delay mismatch Δt of the receiver according to the difference of the second and the first phase imbalances and the difference of the second and the first carrier frequencies is obtained. The in-phase component rI(t) and the quadrature component rQ(t) of the signal r(t) corresponding to other input signal is compensated according to the obtained IQ delay mismatch Δt.

公开(公告)号：US20160006632A1

公开(公告)日：2016-01-07

申请号：US14324258

申请日：2014-07-07

Applicant: Mediatek Inc.

Inventor： Kuo-Hao Chen ,  Chun-Hao Liao ,  KIRAN ULN ,  Shuling Feng

IPC: H04L12/26

CPC classification number: H04L27/2089 ,  H04L5/0023 ,  H04L27/2646 ,  H04L27/364

Abstract: A communication unit includes: a quadrature transmitter having analog transmit filter(s) for filtering a first quadrature test signal. An analog feedback loopback path selectively first routes the filtered quadrature first test signal to a quadrature receiver. The quadrature receiver has: at least one analog receive filter for further filtering the filtered quadrature first test signal; and a quadrature receive baseband circuit arranged to receive and decode the further filtered quadrature first test signal. The quadrature transmitter is arranged to receive a second quadrature test signal and the analog feedback loopback path selectively routes a filtered quadrature second test signal to the quadrature receiver via a second route such that the quadrature receive baseband circuit is arranged to determine a frequency-dependent quadrature imbalance of at least one component in the transmitter/receiver based on the decoded further filtered first quadrature test signal and the decoded further filtered second quadrature test signal.

Abstract translation: 通信单元包括：具有用于对第一正交测试信号进行滤波的模拟发射滤波器的正交发射机。 模拟反馈环回路径选择性地首先将滤波的正交第一测试信号路由到正交接收机。 正交接收机具有：至少一个模拟接收滤波器，用于进一步滤波滤波的正交第一测试信号; 以及正交接收基带电路，被布置为接收和解码进一步滤波的正交第一测试信号。 正交发射器被布置成接收第二正交测试信号，并且模拟反馈环回路径经由第二路径选择性地将滤波的正交第二测试信号路由到正交接收机，使得正交接收基带电路被布置成确定频率相关的正交 基于解码的进一步滤波的第一正交测试信号和解码的进一步滤波的第二正交测试信号，发射机/接收机中的至少一个分量的不平衡。

公开(公告)号：US09184945B2

公开(公告)日：2015-11-10

申请号：US14309925

申请日：2014-06-20

Applicant: MEDIATEK Inc.

Inventor： Kuo-Hao Chen ,  Chun-Hao Liao ,  Pei-Shiun Chung ,  Hsin-Hung Chen

IPC: H04L7/00 ,  H04L25/03 ,  H04L27/38 ,  H04L27/36

CPC classification number: H04L25/03 ,  H04L7/0037 ,  H04L27/364 ,  H04L27/3863

Abstract: A method for compensating the frequency dependent phase imbalance in a transmitter is provided. The transmitter processes a baseband signal. The method includes the following steps: (a) compensating the baseband signal with a predetermined delay amounts; (b) inputting the compensated baseband signal to an upconversion circuit to generate a radio frequency (RF) signal; (c) inputting the RF signal to a delay information extractor to obtain a correlation value related to the information of the predetermined delay amount; (d) changing the predetermined delay amount and compensating the baseband signal again with the changed predetermined delay amount, and performing steps (b) and (c) again to update the correlation value; and (e) selecting a candidate delay amount from the predetermined delay amount according to the correlation value, and compensating the transmitter by using the candidate delay amount.

Abstract translation: 提供了用于补偿发射机中的频率相关相位不平衡的方法。 发射机处理基带信号。 该方法包括以下步骤：（a）以预定的延迟量补偿基带信号; （b）将经补偿的基带信号输入到上变频电路以产生射频（RF）信号; （c）将RF信号输入延迟信息提取器以获得与预定延迟量的信息相关的相关值; （d）改变预定的延迟量并用改变的预定延迟量再次补偿基带信号，并再次执行步骤（b）和（c）以更新相关值; 以及（e）根据相关值从预定延迟量中选择候选延迟量，并且通过使用候选延迟量来补偿发送器。

公开(公告)号：US20140301501A1

公开(公告)日：2014-10-09

申请号：US14309925

申请日：2014-06-20

Applicant: MEDIATEK Inc.

Inventor： Kuo-Hao Chen ,  Chun-Hao Liao ,  Pei-Shiun Chung ,  Hsin-Hung Chen

IPC: H04L25/03

CPC classification number: H04L25/03 ,  H04L7/0037 ,  H04L27/364 ,  H04L27/3863

Abstract: A method for compensating the frequency dependent phase imbalance in a transmitter is provided. The transmitter processes a baseband signal. The method includes the following steps: (a) compensating the baseband signal with a predetermined delay amounts; (b) inputting the compensated baseband signal to an upconversion circuit to generate a radio frequency (RF) signal; (c) inputting the RF signal to a delay information extractor to obtain a correlation value related to the information of the predetermined delay amount; (d) changing the predetermined delay amount and compensating the baseband signal again with the changed predetermined delay amount, and performing steps (b) and (c) again to update the correlation value; and (e) selecting a candidate delay amount from the predetermined delay amount according to the correlation value, and compensating the transmitter by using the candidate delay amount.

Abstract translation: 提供了用于补偿发射机中的频率相关相位不平衡的方法。 发射机处理基带信号。 该方法包括以下步骤：（a）以预定的延迟量补偿基带信号; （b）将经补偿的基带信号输入到上变频电路以产生射频（RF）信号; （c）将RF信号输入延迟信息提取器以获得与预定延迟量的信息相关的相关值; （d）改变预定的延迟量并用改变的预定延迟量再次补偿基带信号，并再次执行步骤（b）和（c）以更新相关值; 以及（e）根据相关值从预定延迟量中选择候选延迟量，并且通过使用候选延迟量来补偿发送器。

公开(公告)号：US09231839B1

公开(公告)日：2016-01-05

申请号：US14324258

申请日：2014-07-07

Applicant: MEDIATEK INC.

Inventor： Kuo-Hao Chen ,  Chun-Hao Liao ,  Kiran Uln ,  Shuling Feng

IPC: H04L12/26 ,  H04L27/00

CPC classification number: H04L27/2089 ,  H04L5/0023 ,  H04L27/2646 ,  H04L27/364

Abstract: A communication unit includes: a quadrature transmitter having analog transmit filter(s) for filtering a first quadrature test signal. An analog feedback loopback path selectively first routes the filtered quadrature first test signal to a quadrature receiver. The quadrature receiver has: at least one analog receive filter for further filtering the filtered quadrature first test signal; and a quadrature receive baseband circuit arranged to receive and decode the further filtered quadrature first test signal. The quadrature transmitter is arranged to receive a second quadrature test signal and the analog feedback loopback path selectively routes a filtered quadrature second test signal to the quadrature receiver via a second route such that the quadrature receive baseband circuit is arranged to determine a frequency-dependent quadrature imbalance of at least one component in the transmitter/receiver based on the decoded further filtered first quadrature test signal and the decoded further filtered second quadrature test signal.

Abstract translation: 通信单元包括：具有用于对第一正交测试信号进行滤波的模拟发射滤波器的正交发射机。 模拟反馈环回路径选择性地首先将滤波的正交第一测试信号路由到正交接收机。 正交接收机具有：至少一个模拟接收滤波器，用于进一步滤波滤波的正交第一测试信号; 以及正交接收基带电路，被布置为接收和解码进一步滤波的正交第一测试信号。 正交发射器被布置成接收第二正交测试信号，并且模拟反馈环回路径经由第二路径选择性地将经滤波的正交第二测试信号路由到正交接收机，使得正交接收基带电路被布置成确定频率相关的正交 基于解码的进一步滤波的第一正交测试信号和解码的进一步滤波的第二正交测试信号，发射机/接收机中的至少一个分量的不平衡。

公开(公告)号：US20150123830A1

公开(公告)日：2015-05-07

申请号：US14483137

申请日：2014-09-10

Applicant: MEDIATEK INC.

Inventor： Sheng-Hao Chen ,  Yen-Chuan Huang ,  Min-Hua Wu ,  Chun-Hao Liao ,  Hung-Pin Ma ,  Tzu-Hao Yu ,  Jen-Che Tsai

IPC: H03M1/06 ,  H03M1/74

CPC classification number: H03M1/0626 ,  H03M1/66 ,  H03M1/74 ,  H03M9/00

Abstract: A digital to analog converting system, which comprises: a first data converting circuit, for receiving a first digital data stream transmitted at a first clock frequency, for converting the first digital data stream to a plurality of second digital data streams transmitted at a second clock frequency, and for outputting the second digital data streams in parallel; a second data converting circuit, for receiving the second digital data streams from the first data converting circuit, and for converting the second digital data streams to a third digital data stream transmitted at a third clock frequency; and a first digital to analog converter, for converting the third digital data stream to a first output analog data stream. The second clock frequency is lower than the first clock frequency and the third clock frequency.

Abstract translation: 一种数模转换系统，包括：第一数据转换电路，用于接收以第一时钟频率发送的第一数字数据流，用于将第一数字数据流转换为在第二时钟发送的多个第二数字数据流 并且用于并行地输出第二数字数据流; 第二数据转换电路，用于从第一数据转换电路接收第二数字数据流，并将第二数字数据流转换成以第三时钟频率发送的第三数字数据流; 以及第一数模转换器，用于将第三数字数据流转换为第一输出模拟数据流。 第二个时钟频率低于第一个时钟频率和第三个时钟频率。