公开(公告)号：US07437139B2

公开(公告)日：2008-10-14

申请号：US11258701

申请日：2005-10-26

申请人： Steve Lo ,  Isaac Sever ,  Thai Nguyen ,  Ssu-Pin Ma

发明人： Steve Lo ,  Isaac Sever ,  Thai Nguyen ,  Ssu-Pin Ma

IPC分类号： H04B1/16

CPC分类号： H04B1/1027

摘要： A method and apparatus of calibrating filtering of receive and transmit signals is disclosed. The method of calibrating filtering of a received signal includes injecting an LO signal. The injected LO signal is filtered by a tunable filter. The filtered signal is frequency down-converted with an equivalent LO signal. The frequency down-converted signal is sampled while tuning the filtering. A desired filter tuning is determined based upon the samples and a frequency of the LO signal. The method of calibrating filtering of a transmit signal includes injecting an LO signal to a transmitter. The LO signal is filtered by a tunable filter. The filtered signal is frequency down-converted with an equivalent LO signal. The frequency down-converted signal is sampled while tuning the filter. A desired filter tuning is determined based upon the samples and a frequency of the LO signal.

摘要翻译： 公开了一种校准接收和发送信号的滤波的方法和装置。 对接收信号进行校准滤波的方法包括：注入LO信号。 注入的LO信号被可调滤波器滤波。 滤波后的信号用等效的LO信号进行降频转换。 在对滤波进行调谐的同时对降频转换信号进行采样。 基于样本和LO信号的频率来确定期望的滤波器调谐。 校准发射信号的滤波的方法包括将LO信号注射到发射机。 LO信号由可调谐滤波器滤波。 滤波后的信号用等效的LO信号进行降频转换。 在对滤波器进行调谐的同时采样降频转换信号。 基于样本和LO信号的频率来确定期望的滤波器调谐。

公开(公告)号：US07623886B2

公开(公告)日：2009-11-24

申请号：US11300089

申请日：2005-12-14

申请人： Ssu-Pin Ma ,  Isaac Sever

发明人： Ssu-Pin Ma ,  Isaac Sever

IPC分类号： H04B7/00

CPC分类号： H04W52/225 ,  H04B17/13 ,  H04W52/52

摘要： A method and apparatus of calibrating a transmitter are disclosed. The method includes attenuating transmitter output signals as controlled by an output control signal, ensuring that an average power of the transmitter output signals is below a threshold level, and performing calibration of the transmitter at periods of time in which the output control signal is attenuating the transmitter output signals a lesser amount. The lesser amount can be less than an average of a minimum amount of attenuation and a maximum amount of attenuation. The apparatus includes a transmitter that includes a frequency up-converting LO mixer for frequency up-converting base band signals, generating transmitter output signals, a transmitter antenna for transmitting the transmitter output signals, and control circuitry for controlling attenuating the transmitter output signals during a calibration of the transmitter.

摘要翻译： 公开了校准发射机的方法和装置。 该方法包括衰减由输出控制信号控制的发射机输出信号，确保发射机输出信号的平均功率低于阈值电平，并且在输出控制信号正在衰减的时间段执行发射机的校准 发射机输出信号的数量较少。 较小的量可以小于最小衰减量和最大衰减量的平均值。 该装置包括发射机，其包括用于频率上变频基带信号的上变频LO混频器，产生发射机输出信号，用于发送发射机输出信号的发射机天线，以及控制电路，用于控制在 变送器的校准。

公开(公告)号：US20070135058A1

公开(公告)日：2007-06-14

申请号：US11300089

申请日：2005-12-14

申请人： Ssu-Pin Ma ,  Isaac Sever

发明人： Ssu-Pin Ma ,  Isaac Sever

IPC分类号： H04B7/00

CPC分类号： H04W52/225 ,  H04B17/13 ,  H04W52/52

摘要： A method and apparatus of calibrating a transmitter are disclosed. The method includes attenuating transmitter output signals as controlled by an output control signal, ensuring that an average power of the transmitter output signals is below a threshold level, and performing calibration of the transmitter at periods of time in which the output control signal is attenuating the transmitter output signals a lesser amount. The lesser amount can be less than an average of a minimum amount of attenuation and a maximum amount of attenuation. The apparatus includes a transmitter that includes a frequency up-converting LO mixer for frequency up-converting base band signals, generating transmitter output signals, a transmitter antenna for transmitting the transmitter output signals, and control circuitry for controlling attenuating the transmitter output signals during a calibration of the transmitter.

摘要翻译： 公开了校准发射机的方法和装置。 该方法包括衰减由输出控制信号控制的发射机输出信号，确保发射机输出信号的平均功率低于阈值电平，并且在输出控制信号正在衰减的时间段执行发射机的校准 发射机输出信号的数量较少。 较小的量可以小于最小衰减量和最大衰减量的平均值。 该装置包括发射机，其包括用于频率上变频基带信号的上变频LO混频器，产生发射机输出信号，用于发送发射机输出信号的发射机天线，以及控制电路，用于控制在 变送器的校准。

公开(公告)号：US20070093224A1

公开(公告)日：2007-04-26

申请号：US11258701

申请日：2005-10-26

申请人： Steve Lo ,  Isaac Sever ,  Thai Nguyen ,  Ssu-Pin Ma

发明人： Steve Lo ,  Isaac Sever ,  Thai Nguyen ,  Ssu-Pin Ma

IPC分类号： H04B1/06

CPC分类号： H04B1/1027

摘要： A method and apparatus of calibrating filtering of receive and transmit signals is disclosed. The method of calibrating filtering of a received signal includes injecting an LO signal. The injected LO signal is filtered by a tunable filter. The filtered signal is frequency down-converted with an equivalent LO signal. The frequency down-converted signal is sampled while tuning the filtering. A desired filter tuning is determined based upon the samples and a frequency of the LO signal. The method of calibrating filtering of a transmit signal includes injecting an LO signal to a transmitter. The LO signal is filtered by a tunable filter. The filtered signal is frequency down-converted with an equivalent LO signal. The frequency down-converted signal is sampled while tuning the filter. A desired filter tuning is determined based upon the samples and a frequency of the LO signal.

摘要翻译： 公开了一种校准接收和发送信号的滤波的方法和装置。 对接收信号进行校准滤波的方法包括：注入LO信号。 注入的LO信号被可调滤波器滤波。 滤波后的信号用等效的LO信号进行降频转换。 在对滤波进行调谐的同时对降频转换信号进行采样。 基于样本和LO信号的频率来确定期望的滤波器调谐。 校准发射信号的滤波的方法包括将LO信号注射到发射机。 LO信号由可调谐滤波器滤波。 滤波后的信号用等效的LO信号进行降频转换。 在对滤波器进行调谐的同时采样降频转换信号。 基于样本和LO信号的频率来确定期望的滤波器调谐。