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公开(公告)号：US20180062675A1
公开(公告)日：2018-03-01
申请号：US15801874
申请日：2017-11-02
Applicant: Analog Devices Global
Inventor： Patrick Pratt , Peadar Antony Forbes , David J. McLaurin , Martin McCormick
IPC: H04B1/04
CPC classification number: H04B1/0475 , H04B1/525
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US09912358B2
公开(公告)日：2018-03-06
申请号：US14874883
申请日：2015-10-05
Applicant: ANALOG DEVICES GLOBAL
Inventor： Patrick Joseph Pratt , Peadar Antony Forbes
CPC classification number: H04B1/0475 , H04B1/1018 , H04B1/525
Abstract: A method of reducing the noise from a transmitter at an associated receiver is disclosed. Noise contributions in active channels are identified and used to update a shared noise cancellation filter. Excluding signals from inactive channels speeds up the filter convergence to a near optimal solution. Sharing a filter across multiple channels reduces component count and power consumption.
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公开(公告)号：US09831898B2
公开(公告)日：2017-11-28
申请号：US13801130
申请日：2013-03-13
Applicant: Analog Devices Global
Inventor： Patrick Pratt , Peadar Antony Forbes , David J. McLaurin , Martin McCormick
CPC classification number: H04B1/0475 , H04B1/525
Abstract: 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.
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公开(公告)号：US20160277046A1
公开(公告)日：2016-09-22
申请号：US14874883
申请日：2015-10-05
Applicant: ANALOG DEVICES GLOBAL
Inventor： Patrick Joseph Pratt , Peadar Antony Forbes
CPC classification number: H04B1/0475 , H04B1/1018 , H04B1/525
Abstract: A method of reducing the noise from a transmitter at an associated receiver is disclosed. Noise contributions in active channels are identified and used to update a shared noise cancellation filter. Excluding signals from inactive channels speeds up the filter convergence to a near optimal solution. Sharing a filter across multiple channels reduces component count and power consumption.
Abstract translation: 公开了一种在相关联的接收机处降低来自发射机的噪声的方法。 识别有源信道中的噪声贡献，并用于更新共享噪声消除滤波器。 从不活动通道中排除信号可将滤波器收敛加速到接近最优解。 跨多个通道共享过滤器可减少组件数量和功耗。
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公开(公告)号：US09379675B2
公开(公告)日：2016-06-28
申请号：US14282484
申请日：2014-05-20
Applicant: ANALOG DEVICES GLOBAL
Inventor： Eamon Nash , Mingming Zhao , Ovidiu Vasile Balaj , Peadar Antony Forbes , Claire Masterson
CPC classification number: H03F1/52 , H03F1/0222 , H03F1/0266 , H03F3/195 , H03F3/24 , H03F3/72 , H03F2200/102 , H03F2200/18 , H03F2200/192 , H03F2200/195 , H03F2200/426 , H03F2200/435 , H03F2200/451 , H03F2203/7215 , H03F2203/7221
Abstract: Aspects of this disclosure relate to protecting a circuit, such as an amplifier, from transient overdrive events and/or average overdrive events. In one embodiment, an indication of average power, such as root mean squared (RMS) power of a radio frequency (RF) signal, can be compared to a first threshold and an indication of a peak RF power can be compared to a second threshold. When the indication of average power exceeds the first threshold, an average overdrive event can be detected. When the indication of peak power exceeds the second threshold, a peak overdrive event can be detected. If either a transient overdrive event or an average overdrive event is detected, a circuit, such as an amplifier, can be protected.
Abstract translation: 本公开的方面涉及保护诸如放大器的电路免受瞬态过驱动事件和/或平均过驱动事件的影响。 在一个实施例中，能够将射频（RF）信号的平均功率（诸如均方根（RMS））功率的指示与第一阈值进行比较，并且峰值RF功率的指示可以与第二阈值进行比较 。 当平均功率的指示超过第一阈值时，可以检测平均过驱动事件。 当峰值功率的指示超过第二阈值时，可以检测峰值过驱动事件。 如果检测到瞬态过驱动事件或平均过驱动事件，则可以保护诸如放大器的电路。
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公开(公告)号：US20150236658A1
公开(公告)日：2015-08-20
申请号：US14282484
申请日：2014-05-20
Applicant: Analog Devices Global
Inventor： Eamon Nash , Mingming Zhao , Ovidiu Vasile Balaj , Peadar Antony Forbes , Claire Masterson
CPC classification number: H03F1/52 , H03F1/0222 , H03F1/0266 , H03F3/195 , H03F3/24 , H03F3/72 , H03F2200/102 , H03F2200/18 , H03F2200/192 , H03F2200/195 , H03F2200/426 , H03F2200/435 , H03F2200/451 , H03F2203/7215 , H03F2203/7221
Abstract: Aspects of this disclosure relate to protecting a circuit, such as an amplifier, from transient overdrive events and/or average overdrive events. In one embodiment, an indication of average power, such as root mean squared (RMS) power of a radio frequency (RF) signal, can be compared to a first threshold and an indication of a peak RF power can be compared to a second threshold. When the indication of average power exceeds the first threshold, an average overdrive event can be detected. When the indication of peak power exceeds the second threshold, a peak overdrive event can be detected. If either a transient overdrive event or an average overdrive event is detected, a circuit, such as an amplifier, can be protected.
Abstract translation: 本公开的方面涉及保护诸如放大器的电路免受瞬态过驱动事件和/或平均过驱动事件的影响。 在一个实施例中，能够将射频（RF）信号的平均功率（诸如均方根（RMS））功率的指示与第一阈值进行比较，并且峰值RF功率的指示可以与第二阈值进行比较 。 当平均功率的指示超过第一阈值时，可以检测平均过驱动事件。 当峰值功率的指示超过第二阈值时，可以检测峰值过驱动事件。 如果检测到瞬态过驱动事件或平均过驱动事件，则可以保护诸如放大器的电路。
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