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1. 发明专利

JP2014179986A Radio frequency transmitter noise cancellation 有权
标题翻译：无线电频率发射机噪声消除
公开(公告)号：JP2014179986A
公开(公告)日：2014-09-25
申请号：JP2014048493
申请日：2014-03-12
申请人： Analog Devices Technology , アナログ・デヴァイシズ・テクノロジー
发明人： PATRICK PRATT , PEADAR ANTONY FORBES , DAVID J MCLAURIN , MARTIN MCCORMICK
IPC分类号： H04B1/10 , H04B1/48
CPC分类号： H04B1/0475 , H04B1/525
摘要： PROBLEM TO BE SOLVED: To provide a low-power and reduced-size RF noise cancellation circuit that is able to cost efficiently minimize transmitter noise leakage in received signals without having its adaptation rate reduced by external blockers.SOLUTION: Transmitter noise cancellation may be applied on a channel by channel basis to active channels of an incoming radio frequency signal received at a receiver. A noise cancellation filter may be provided for each active channel in a predetermined signal band. Applying noise cancellation on a per active channel basis instead of to the entire receive band may substantially reduce the filtering requirement and number of filter coefficients or taps to save power and reduce manufacturing costs. Channelized transmitter noise cancellers, multi transmitter-receiver cross coupling cancellers, and hybrid full signal band and channelized transmitter noise cancellers are also provided.
摘要翻译：要解决的问题：提供低功率和小尺寸的RF噪声消除电路，其能够有效地最小化接收信号中的发射机噪声泄漏，而不会由于外部阻塞器降低其适配速率。解决方案：可以应用发射机噪声消除在逐个信道的基础上接收在接收器处接收的输入射频信号的有效信道。可以在预定信号频带中为每个有源信道提供噪声消除滤波器。在每个活动通道基础上而不是整个接收频带上应用噪声消除可以大大降低滤波器要求和滤波器系数或抽头的数量以节省功率并降低制造成本。还提供信道化发射机噪声消除器，多发射机 - 接收机交叉耦合消除器，以及混合全信号频带和信道化发射机噪声消除器。

2. 发明专利

JP2014176097A All digital transmitter noise correction 有权
标题翻译：所有数字发射机噪声校正
公开(公告)号：JP2014176097A
公开(公告)日：2014-09-22
申请号：JP2014047252
申请日：2014-03-11
申请人： Analog Devices Technology , アナログ・デヴァイシズ・テクノロジー
发明人： PATRICK PRATT , PEADAR ANTONY FORBES
IPC分类号： H04B1/04 , H04B1/40
CPC分类号： H04B1/0475 , H04B1/10 , H04B1/123 , H04B1/525 , H04L5/14 , H04L5/1423 , H04L5/1461
摘要： PROBLEM TO BE SOLVED: To provide a circuit and a method in which an all digital model of nonlinear transmitter signal distortion in signals received at a receiver of a transmitter-receiver may be used to estimate distortion, and the estimated distortion may then be cancelled from the received signals to improve signal quality of the received signal.SOLUTION: A digital nonlinear model may be part of an estimation circuit that estimates nonlinear distortion terms by applying a formula or transformation to a digitized version of transmission signals at a transmitter of the transmitter-receiver. A mixer may be used to shift a frequency of the estimated nonlinear terms away from a transmitter frequency so that the nonlinear terms can later be subtracted from the incoming signal received at the receiver at a receiver frequency. A circuit and a method are provided.
摘要翻译：要解决的问题：提供一种电路和方法，其中可以使用在发射机 - 接收机的接收机处接收的信号中的非线性发射机信号失真的全数字模型来估计失真，并且然后可以从接收信号以改善接收信号的信号质量。解决方案：数字非线性模型可以是估计电路的一部分，该估计电路通过在发射机的发射机处对传输信号的数字化版本应用公式或变换来估计非线性失真项，接收器。可以使用混频器将估计的非线性项的频率偏离发射机频率，使得可以在接收机频率处从接收机接收的输入信号中减去非线性项。提供电路和方法。

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