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1. 发明申请

US20130095776A1 CANCELLATION OF SPECTRAL IMAGES IN COMMUNICATION DEVICES 失效
标题翻译：在通信设备中取消光谱图像
公开(公告)号：US20130095776A1
公开(公告)日：2013-04-18
申请号：US13272872
申请日：2011-10-13
申请人： Amirpouya Kavousian , David K. Su
发明人： Amirpouya Kavousian , David K. Su
IPC分类号： H04B1/04
CPC分类号： H04B1/109
摘要： Digital-to-analog conversion in a communication device typically results in superimposed spectral images in the frequency spectrum of the analog waveform. These superimposed spectral images can distort the analog waveform and potentially violate the spectral mask and the constraints on out-of-band emissions set by the FCC. The communication device can be configured to implement a spectral image cancellation unit with feed-forward architecture to minimize the spectral images in the frequency spectrum of the analog waveform. The spectral image cancellation unit can generate a spectral image error signal comprising the spectral images at one or more spectral image frequencies. The spectral image cancellation unit can then subtract the spectral image error signal from the analog waveform to reduce spectral image components of the analog waveform and to yield an output signal for transmission.
摘要翻译：在通信设备中的数模转换通常在模拟波形的频谱中产生叠加的光谱图像。这些叠加的光谱图像可能使模拟波形失真，并可能违反频谱掩模和由FCC设定的带外发射限制。通信设备可以被配置为实现具有前馈架构的频谱图像消除单元，以最小化模拟波形的频谱中的频谱图像。光谱图像消除单元可以产生包括在一个或多个光谱图像频率处的光谱图像的光谱图像误差信号。然后，光谱图像消除单元可以从模拟波形中减去光谱图像误差信号，以减少模拟波形的光谱图像分量，并产生用于传输的输出信号。

2. 发明授权

US08565707B2 Cancellation of spectral images in communication devices 失效
标题翻译：消除通信设备中的光谱图像
公开(公告)号：US08565707B2
公开(公告)日：2013-10-22
申请号：US13272872
申请日：2011-10-13
申请人： Amirpouya Kavousian , David K. Su
发明人： Amirpouya Kavousian , David K. Su
IPC分类号： H04B1/10
CPC分类号： H04B1/109
摘要： Digital-to-analog conversion in a communication device typically results in superimposed spectral images in the frequency spectrum of the analog waveform. These superimposed spectral images can distort the analog waveform and potentially violate the spectral mask and the constraints on out-of-band emissions set by the FCC. The communication device can be configured to implement a spectral image cancellation unit with feed-forward architecture to minimize the spectral images in the frequency spectrum of the analog waveform. The spectral image cancellation unit can generate a spectral image error signal comprising the spectral images at one or more spectral image frequencies. The spectral image cancellation unit can then subtract the spectral image error signal from the analog waveform to reduce spectral image components of the analog waveform and to yield an output signal for transmission.
摘要翻译：在通信设备中的数模转换通常在模拟波形的频谱中产生叠加的光谱图像。这些叠加的光谱图像可能使模拟波形失真，并可能违反频谱掩模和由FCC设定的带外发射限制。通信设备可以被配置为实现具有前馈架构的频谱图像消除单元，以最小化模拟波形的频谱中的频谱图像。光谱图像消除单元可以产生包括在一个或多个光谱图像频率处的光谱图像的光谱图像误差信号。然后，光谱图像消除单元可以从模拟波形中减去光谱图像误差信号，以减少模拟波形的光谱图像分量，并产生用于传输的输出信号。

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