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1. 发明授权

US08461901B1 Harmonic reject mixer with active phase mismatch compensation in the local oscillator path 有权
标题翻译：在本地振荡器路径中具有有源相位失配补偿的谐波抑制混频器
公开(公告)号：US08461901B1
公开(公告)日：2013-06-11
申请号：US13399221
申请日：2012-02-17
申请人： Matthew A. Morton , Jonathan P. Comeau , Edward Wade Thoenes
发明人： Matthew A. Morton , Jonathan P. Comeau , Edward Wade Thoenes
IPC分类号： H03D13/00
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/1483 , H03D7/165 , H03D2200/0086
摘要： A harmonic rejection mixer having a phase rotator fed by a local oscillator signal. The local oscillator signal has a reference frequency. The phase rotator produces a plurality of output signals, each one of the signals having a common frequency related to the reference frequency and having different relative phase shifts. A plurality of mixer sections, each one of the sections being fed an input signal and a corresponding one of the plurality of output signals mixes the local oscillator signal with the corresponding one of the plurality of output signals fed thereto. A combiner combines the mixer signal from the plurality of mixer sections into a composite output signal. A detector detects energy in a harmonic of the composite signal and for adjusting the output signal of the phase rotator to reduce the selected harmonic of the composite signal.
摘要翻译：具有由本地振荡器信号馈送的相位旋转器的谐波抑制混频器。本地振荡器信号具有参考频率。相位旋转器产生多个输出信号，每个信号具有与参考频率相关的共同频率并且具有不同的相对相移。多个混频器部分，每个部分被馈送输入信号，并且多个输出信号中的对应的一个输出信号将本地振荡器信号与馈送到其的多个输出信号中的对应的一个混合。组合器将来自多个混频器部分的混频器信号组合成复合输出信号。检测器检测复合信号的谐波中的能量，并用于调整相位旋转器的输出信号以减小复合信号的选定谐波。

2. 发明授权

US08600329B1 Interference signal canceller 有权
标题翻译：干扰信号消除器
公开(公告)号：US08600329B1
公开(公告)日：2013-12-03
申请号：US13645024
申请日：2012-10-04
申请人： Jonathan P. Comeau , Matthew A. Morton
发明人： Jonathan P. Comeau , Matthew A. Morton
IPC分类号： H04B1/10
CPC分类号： H04B1/123
摘要： An interfering signal canceller has a passive isolation element fed by an input signal in a primary path. A first frequency converter is in an auxiliary path and is fed by an input signal for converting the input signal to an intermediate or baseband signal. A bandpass filter is tuned to the interfering signal component for passing the interfering signal component of the converted input signal and suppressing the desired signal component. A second frequency converter/phase rotator section has a phase rotator fed by a local oscillator signal and a second frequency converter fed by the phase rotator and the bandpass filter. The second frequency converter/phase rotator section convert and phase adjust the passed the interfering signal component and the suppressed desired signal component to the predetermined band of frequencies. A combiner combines signals in the primary signal path and from the second frequency converter/phase rotator section.
摘要翻译：干扰信号消除器具有由主路径中的输入信号馈送的无源隔离元件。第一变频器处于辅助路径中，并由输入信号馈送，以将输入信号转换成中间或基带信号。带通滤波器被调谐到干扰信号分量，用于通过转换的输入信号的干扰信号分量并抑制期望的信号分量。第二变频器/相位旋转器部分具有由本地振荡器信号馈送的相位旋转器和由相位旋转器和带通滤波器馈送的第二变频器。第二变频器/相位旋转器部分将通过的干扰信号分量和抑制的期望信号分量转换并相位调整到预定的频带。组合器组合主信号路径和第二变频器/相位旋转器部分中的信号。

3. 发明申请

US20120112835A1 TRANSFORMER COUPLED DISTRIBUTED AMPLIFIER 有权
标题翻译：变压器耦合分配放大器
公开(公告)号：US20120112835A1
公开(公告)日：2012-05-10
申请号：US12942467
申请日：2010-11-09
申请人： Jonathan P. Comeau , Matthew A. Morton , Edward W. Thoenes
发明人： Jonathan P. Comeau , Matthew A. Morton , Edward W. Thoenes
IPC分类号： H03F3/45
CPC分类号： H03F3/605 , H03F1/22 , H03F3/211 , H03F3/45089 , H03F3/45475 , H03F2203/45138 , H03F2203/45481 , H03F2203/45621 , H03F2203/45731
摘要： An amplifier having an input transmission network with a plurality of input transformers having serially coupled primary windings. Each one of the input transformers has a secondary winding magnetically coupled to a corresponding one of the primary windings. The amplifier includes an output transmission network having a plurality of output transformers having serially coupled secondary windings. Each one of the output transformers has a secondary winding magnetically coupled to a corresponding one of the primary windings. The amplifier includes a plurality of amplifier sections, each one the sections having an input connected to a corresponding one of the secondary windings of the input transformers and an output connected to a corresponding one of the primary windings of the output transformers. The input and output transmission networks are arranged to combine signals passing from an input to the input transmission network through the plurality of amplifier sections combine in-phase at an output of the output transmission section.
摘要翻译：一种具有输入传输网络的放大器，具有多个具有串联耦合的初级绕组的输入变压器。每个输入变压器具有磁耦合到相应的一个初级绕组的次级绕组。放大器包括具有多个具有串联耦合次级绕组的输出变压器的输出传输网络。每个输出变压器具有磁耦合到相应的一个初级绕组的次级绕组。放大器包括多个放大器部分，每个部分具有连接到输入变压器的相应一个次级绕组的输入端和连接到输出变压器的相应一个初级绕组的输出端。输入和输出传输网络被布置为将通过输入到输入传输网络的信号通过在输出传输部分的输出端同相组合的多个放大器部分组合。

4. 发明授权

US08724739B2 Variable phase shifter-attenuator 有权
标题翻译：可变移相器 - 衰减器
公开(公告)号：US08724739B2
公开(公告)日：2014-05-13
申请号：US12942496
申请日：2010-11-09
申请人： Matthew A. Morton , Jonathan P. Comeau , Edward W. Thoenes
发明人： Matthew A. Morton , Jonathan P. Comeau , Edward W. Thoenes
IPC分类号： H04L27/20
CPC分类号： H01P1/18 , H01P1/22 , H03H7/25 , H03H11/20 , H03H11/22 , H03H11/245
摘要： A phase shifter-attenuator system having: a controller for producing a digital word representative of a predetermined phase shift and attenuation provided to an input signal; and a phase shifter-attenuation section. The phase shifter-attenuation section includes: a phase rotator for providing one of a plurality combinations of phase shifts-attenuation states to the input signal selectively in accordance with one portion of the produced digital word; and an attenuation section for distributing the plurality of combinations of phase shift-attenuation states over a selected range of attenuations, such range being selected in accordance with a second portion of the produced digital word. The phase shifter-attenuator section provides one of a plurality of combinations of phase shift-attenuation states to the input signal selectively in accordance with one portion of the produced digital word, the combinations being distributed over a range of attentions selected in accordance with a second portion of the digital word.
摘要翻译：一种移相器衰减器系统，具有：用于产生代表提供给输入信号的预定相移和衰减的数字字的控制器; 和移相器衰减部分。移相器衰减部分包括：相位旋转器，用于根据所产生的数字字的一部分选择性地向输入信号提供多个相移衰减状态的组合中的一个; 以及衰减部分，用于在选定的衰减范围上分配多个相移衰减状态的组合，所述范围根据所产生的数字字的第二部分被选择。移相器 - 衰减器部分根据所产生的数字字的一部分选择性地向输入信号提供多个相移衰减状态的组合中的一个，该组合分布在根据第二个所选择的一系列注意数字字的一部分。

5. 发明授权

US08319556B2 Transformer coupled distributed amplifier 有权
标题翻译：变压器耦合分布式放大器
公开(公告)号：US08319556B2
公开(公告)日：2012-11-27
申请号：US12942467
申请日：2010-11-09
申请人： Jonathan P. Comeau , Matthew A. Morton , Edward W. Thoenes
发明人： Jonathan P. Comeau , Matthew A. Morton , Edward W. Thoenes
IPC分类号： H03F3/60
CPC分类号： H03F3/605 , H03F1/22 , H03F3/211 , H03F3/45089 , H03F3/45475 , H03F2203/45138 , H03F2203/45481 , H03F2203/45621 , H03F2203/45731
摘要： An amplifier having an input transmission network with a plurality of input transformers having serially coupled primary windings. Each one of the input transformers has a secondary winding magnetically coupled to a corresponding one of the primary windings. The amplifier includes an output transmission network having a plurality of output transformers having serially coupled secondary windings. Each one of the output transformers has a secondary winding magnetically coupled to a corresponding one of the primary windings. The amplifier includes a plurality of amplifier sections, each one the sections having an input connected to a corresponding one of the secondary windings of the input transformers and an output connected to a corresponding one of the primary windings of the output transformers. The input and output transmission networks are arranged to combine signals passing from an input to the input transmission network through the plurality of amplifier sections combine in-phase at an output of the output transmission section.
摘要翻译：一种具有输入传输网络的放大器，具有多个具有串联耦合的初级绕组的输入变压器。每个输入变压器具有磁耦合到相应的一个初级绕组的次级绕组。放大器包括具有多个具有串联耦合次级绕组的输出变压器的输出传输网络。每个输出变压器具有磁耦合到相应的一个初级绕组的次级绕组。放大器包括多个放大器部分，每个部分具有连接到输入变压器的相应一个次级绕组的输入端和连接到输出变压器的相应一个初级绕组的输出端。输入和输出传输网络被布置为将通过输入到输入传输网络的信号通过在输出传输部分的输出端同相组合的多个放大器部分组合。

6. 发明申请

US20120114076A1 VARIABLE PHASE SHIFTER-ATTENUATOR 有权
标题翻译：可变相位减震器
公开(公告)号：US20120114076A1
公开(公告)日：2012-05-10
申请号：US12942496
申请日：2010-11-09
申请人： Matthew A. Morton , Jonathan P. Comeau , Edward W. Thoenes
发明人： Matthew A. Morton , Jonathan P. Comeau , Edward W. Thoenes
IPC分类号： H04L27/20
CPC分类号： H01P1/18 , H01P1/22 , H03H7/25 , H03H11/20 , H03H11/22 , H03H11/245
摘要： A phase shifter-attenuator system having: a controller for producing a digital word representative of a predetermined phase shift and attenuation provided to an input signal; and a phase shifter-attenuation section. The phase shifter-attenuation section includes: a phase rotator for providing one of a plurality combinations of phase shifts-attenuation states to the input signal selectively in accordance with one portion of the produced digital word; and an attenuation section for distributing the plurality of combinations of phase shift-attenuation states over a selected range of attenuations, such range being selected in accordance with a second portion of the produced digital word. The phase shifter-attenuator section provides one of a plurality of combinations of phase shift-attenuation states to the input signal selectively in accordance with one portion of the produced digital word, the combinations being distributed over a range of attentions selected in accordance with a second portion of the digital word.
摘要翻译：一种移相器衰减器系统，具有：用于产生代表提供给输入信号的预定相移和衰减的数字字的控制器; 和移相器衰减部分。移相器衰减部分包括：相位旋转器，用于根据所产生的数字字的一部分选择性地向输入信号提供多个相移衰减状态的组合中的一个; 以及衰减部分，用于在选定的衰减范围上分配多个相移衰减状态的组合，所述范围根据所产生的数字字的第二部分被选择。移相器 - 衰减器部分根据所产生的数字字的一部分选择性地向输入信号提供多个相移衰减状态的组合中的一个，该组合分布在根据第二个所选择的一系列注意数字字的一部分。

7. 发明授权

US06667842B2 Negative feedback impedance matched preamplifier 有权
公开(公告)号：US06667842B2
公开(公告)日：2003-12-23
申请号：US09797316
申请日：2001-03-01
申请人： Jonathan P. Comeau , Ronen Malka , David J. Fitzgerald , Sally A. Doherty
发明人： Jonathan P. Comeau , Ronen Malka , David J. Fitzgerald , Sally A. Doherty
IPC分类号： G11B502
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/02 , G11B2005/3996
摘要： A preamplifier system is provided for connection through an interconnect to a read head. The interconnect has a characteristic impedance associated therewith. The preamplifier system includes an amplifier circuit having an input for connection to the interconnect. The amplifier circuit amplifies an input signal carried from the read head through the interconnect, yielding an amplified input output signal. A feedback resistance is connected between the amplified output signal and the input of the amplifier circuit. The feedback resistance has a value selected to provide an effective input impedance of the preamplifier system to match the characteristic impedance of the interconnect.

8. 发明授权

US06707625B2 Dual-sense impedance-matched reader 有权
标题翻译：双重阻抗匹配读卡器
公开(公告)号：US06707625B2
公开(公告)日：2004-03-16
申请号：US09797399
申请日：2001-03-01
申请人： John D. Leighton , Carl Elliott , Jonathan P. Comeau
发明人： John D. Leighton , Carl Elliott , Jonathan P. Comeau
IPC分类号： G11B509
CPC分类号： H03F3/45089 , G11B5/012 , G11B5/02 , H03F2203/45318 , H03F2203/45548 , H03F2203/45574 , H03F2203/45722
摘要： A preamplifier system is connected through an interconnect to a read head. The preamplifier system includes a voltage-sense preamplifier having at least one input connected through the interconnect to the read head and having at least one output, and also includes a current-sense preamplifier having at least one input connected through the interconnect to the read head and having at least one output. A summing circuit is connected to combine the outputs of the voltage-sense preamplifier and the current-sense preamplifier. For optimal performance, the preamplifier system is impedance matched to the interconnect. The preamplifier system achieves excellent response due to impedance matching with acceptably low noise levels, since the correlated noise associated with the current-sense preamplifier is canceled at the summing circuit.
摘要翻译：前置放大器系统通过互连连接到读取头。前置放大器系统包括电压检测前置放大器，其具有通过互连连接到读取头并且具有至少一个输出的至少一个输入，并且还包括电流检测前置放大器，其具有通过互连连接到读取头的至少一个输入并具有至少一个输出。一个求和电路被连接起来来组合电压检测前置放大器和电流检测前置放大器的输出。为了获得最佳性能，前置放大器系统与互连阻抗匹配。由于与电流检测前置放大器相关联的相关噪声在求和电路处被消除，所以前置放大器系统由于具有可接受的低噪声电平的阻抗匹配而实现了出色的响应。

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