公开(公告)号：US07634028B2

公开(公告)日：2009-12-15

申请号：US10854935

申请日：2004-05-27

申请人： Philip Crawley

发明人： Philip Crawley

IPC分类号： H04L27/00

CPC分类号： H04B15/06

摘要： Various embodiments of the present invention include methods and apparatus for receiving a radio frequency (RF) signal spectrum in a receiver; mixing the RF signal spectrum with a first local oscillator (LO) frequency to obtain a first downmixed signal; and converting the first downmixed signal to a first digital signal using an analog-to-digital converter (ADC) having an adjustable clock frequency selected to avoid interference with the first LO frequency. The adjustable clock frequency may be adjusted by a predetermined amount, by phase modulation, or in other manners.

摘要翻译： 本发明的各种实施例包括用于在接收机中接收射频（RF）信号频谱的方法和装置; 将RF信号频谱与第一本地振荡器（LO）频率混合以获得第一下混合信号; 以及使用具有可选择的可调节时钟频率的模拟 - 数字转换器（ADC）将所述第一下混合信号转换为第一数字信号，以避免与所述第一LO频率的干扰。 可调节时钟频率可以通过相位调制或以其它方式调整预定量。

公开(公告)号：US07218179B2

公开(公告)日：2007-05-15

申请号：US10854980

申请日：2004-05-27

申请人： Philip Crawley

发明人： Philip Crawley

IPC分类号： H03K3/03

CPC分类号： H03F1/34 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372

摘要： In one embodiment of the present invention, an apparatus includes a plurality of gain stages each having a gain greater than one, and which are coupled to create a positive feedback at an oscillation frequency. The gain stages may be formed of transconductance gain stages which may be coupled together as a ring oscillator or a latch type circuit. Such circuits may be used as calibration circuits in which small signal parameters of the gain stages are directly calibrated, and are used in turn to directly calibrate small signal parameters of a target circuit.

摘要翻译： 在本发明的一个实施例中，一种装置包括多个增益级，每个增益级具有大于1的增益，并且被耦合以产生振荡频率的正反馈。 增益级可以由跨导增益级形成，其可以耦合在一起作为环形振荡器或锁存型电路。 这样的电路可以用作校准电路，其中增益级的小信号参数被直接校准，并且依次用于直接校准目标电路的小信号参数。

公开(公告)号：US20060251188A1

公开(公告)日：2006-11-09

申请号：US11327128

申请日：2006-01-06

申请人： Philip Crawley ,  John Camagna ,  Amit Gattani

发明人： Philip Crawley ,  John Camagna ,  Amit Gattani

IPC分类号： H04L25/06

CPC分类号： H04L25/0266 ,  H04L12/12 ,  Y02D50/40 ,  Y02D50/42

摘要： In a network device, an interface is coupled between an Ethernet physical layer (PHY) module and a network connector, and comprises at least one pair of pins coupled to output connections of the Ethernet physical layer (PHY), a direct current (DC) blocking capacitor coupled to each pin, and a common-mode suppression amplifier coupled between the paired pins.

摘要翻译： 在网络设备中，接口耦合在以太网物理层（PHY）模块和网络连接器之间，并且包括耦合到以太网物理层（PHY）的输出连接的至少一对引脚，直流（DC） 耦合到每个引脚的阻塞电容器和耦合在所述成对引脚之间的共模抑制放大器。

公开(公告)号：US20060218420A1

公开(公告)日：2006-09-28

申请号：US11287408

申请日：2005-11-23

申请人： John R. Camagna ,  Philip Crawley ,  Sajol Ghoshal

发明人： John R. Camagna ,  Philip Crawley ,  Sajol Ghoshal

IPC分类号： G06F1/00

CPC分类号： H04L12/10

摘要： Embodiments of the present invention provide a power feed circuit operable to supply an Ethernet power signal to a coupled Ethernet network. This power feed circuit includes a number of input nodes, differential transistor pairs, active control circuits and output nodes. The input nodes receive a first power signal such as that provided by an isolated 48 volt power supply. Each transistor of the differential transistor pairs couples to one input node. These differential transistor pairs produce a second power signal which may be supplied to the Ethernet network. The active control circuits sense the second power signal passed by each transistor and are operable to apply a feedback signal to the differential transistor pairs based on the sensed power signal. At least one twisted pair couples to each differential transistor pair's output node and is operable to pass the Ethernet power signal.

摘要翻译： 本发明的实施例提供了可操作以将以太网功率信号提供给耦合以太网的供电电路。 该馈电电路包括多个输入节点，差分晶体管对，有源控制电路和输出节点。 输入节点接收第一功率信号，例如由隔离的48伏特电源提供的功率信号。 差分晶体管对的每个晶体管耦合到一个输入节点。 这些差分晶体管对产生可以提供给以太网的第二功率信号。 主动控制电路感测由每个晶体管通过的第二功率信号，并且可操作以基于感测到的功率信号将反馈信号施加到差分晶体管对。 至少一对双绞线耦合到每个差分晶体管对的输出节点，并且可操作地传递以太网功率信号。

公开(公告)号：US20080062600A1

公开(公告)日：2008-03-13

申请号：US11935289

申请日：2007-11-05

申请人： Philip Crawley ,  Amit Gattani ,  Jun Cai

发明人： Philip Crawley ,  Amit Gattani ,  Jun Cai

IPC分类号： H02H9/04 ,  H02H9/00

CPC分类号： H04L25/0276

摘要： A network device comprises an interface coupling an electronic device to a differential pair of signal lines, and an integrated active common mode suppression and electrostatic discharge protection circuit coupled to the interface in parallel to differential signal lines of the electronic device.

摘要翻译： 网络设备包括将电子设备耦合到差分信号线对的接口以及并联于电子设备的差分信号线的接口耦合的集成的有源共模抑制和静电放电保护电路。

公开(公告)号：US20060218422A1

公开(公告)日：2006-09-28

申请号：US11352756

申请日：2006-02-13

申请人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

发明人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

IPC分类号： G06F1/00

CPC分类号： H04L12/10 ,  H04L12/40136 ,  H04L49/351 ,  H04L49/40 ,  Y02D50/10

摘要： Embodiments of the present invention provide a power source equipment (PSE) network device operable to provide a network signal that may include both power and data. This PSE network device includes a network connector and an integrated circuit. The network connector physically couples the PSE network device to the network. The integrated circuit further includes a power feed circuit. This power feed circuit is operable to draw and balance a plurality of power signals from an isolated power supply. Then the power feed circuit may combine and pass the received data signals and power signal as a single network signal. A PSE controller electrically couples to the integrated circuit but is not necessarily part of the integrated circuit. The PSE controller is operable to govern the production and distribution of the power portion of the network signal.

摘要翻译： 本发明的实施例提供一种电源设备（PSE）网络设备，其可操作以提供可包括电力和数据的网络信号。 该PSE网络设备包括网络连接器和集成电路。 网络连接器将PSE网络设备物理耦合到网络。 集成电路还包括馈电电路。 该供电电路可操作以平衡来自隔离电源的多个功率信号。 然后，馈电电路可以将接收到的数据信号和功率信号组合并传递为单个网络信号。 PSE控制器电耦合到集成电路，但不一定是集成电路的一部分。 PSE控制器可操作地控制网络信号的功率部分的产生和分配。

公开(公告)号：US20060218421A1

公开(公告)日：2006-09-28

申请号：US11325210

申请日：2006-01-03

申请人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

发明人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

IPC分类号： G06F1/00

CPC分类号： H04L12/10

摘要： Embodiments of the present invention provide a power feed circuit operable to supply an Ethernet power signal to a coupled Ethernet network. This power feed circuit includes a number of input nodes, differential transistor pairs, active control circuits, insertion loss control limit circuits and output nodes. The input nodes receive a first power signal such as that provided by an isolated 48 volt power supply. Each transistor of the differential transistor pairs couples to one input node. These differential transistor pairs draw currents which combine to produce a power signal component of the Ethernet power signal. The active control circuits sense the currents drawn by each transistor and are operable to apply a feedback signal to the differential transistor pairs based on the second circuit. Additionally, the insertion loss control limit circuit may sense the power and/or data rate associated with the data signal component of the Ethernet power signal. This then enables the power signal component to be adjusted. By considering the power of both the power signal component and data signal component, the overall power may be limited to prevent damage to downstream power devices. At least one twisted pair couples to each differential transistor pair's output node and is operable to pass the Ethernet power signal.

摘要翻译： 本发明的实施例提供了可操作以将以太网功率信号提供给耦合以太网的供电电路。 该馈电电路包括多个输入节点，差分晶体管对，有源控制电路，插入损耗控制限制电路和输出节点。 输入节点接收第一功率信号，例如由隔离的48伏特电源提供的功率信号。 差分晶体管对的每个晶体管耦合到一个输入节点。 这些差分晶体管对画出组合产生以太网功率信号的功率信号分量的电流。 主动控制电路感测由每个晶体管汲取的电流，并且可操作以基于第二电路将反馈信号施加到差分晶体管对。 此外，插入损耗控制限制电路可以感测与以太网功率信号的数据信号分量相关联的功率和/或数据速率。 这样就可以调整功率信号分量。 通过考虑功率信号分量和数据信号分量的功率，可以限制总功率以防止对下游功率器件的损坏。 至少一对双绞线耦合到每个差分晶体管对的输出节点，并且可操作地传递以太网功率信号。

公开(公告)号：US20050275477A1

公开(公告)日：2005-12-15

申请号：US10854980

申请日：2004-05-27

申请人： Philip Crawley

发明人： Philip Crawley

IPC分类号： H03B1/00 ,  H03F1/34 ,  H03F3/45

CPC分类号： H03F1/34 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372

摘要： In one embodiment of the present invention, an apparatus includes a plurality of gain stages each having a gain greater than one, and which are coupled to create a positive feedback at an oscillation frequency. The gain stages may be formed of transconductance gain stages which may be coupled together as a ring oscillator or a latch type circuit. Such circuits may be used as calibration circuits in which small signal parameters of the gain stages are directly calibrated, and are used in turn to directly calibrate small signal parameters of a target circuit.

摘要翻译： 在本发明的一个实施例中，一种装置包括多个增益级，每个增益级具有大于1的增益，并且被耦合以产生振荡频率的正反馈。 增益级可以由跨导增益级形成，其可以耦合在一起作为环形振荡器或锁存型电路。 这样的电路可以用作校准电路，其中增益级的小信号参数被直接校准，并且依次用于直接校准目标电路的小信号参数。

公开(公告)号：US20070260904A1

公开(公告)日：2007-11-08

申请号：US11429832

申请日：2006-05-08

申请人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

发明人： John Camagna ,  Sajol Ghoshal ,  Philip Crawley

IPC分类号： G06F1/00

CPC分类号： H04L12/10 ,  H04L41/0681

摘要： Power feed circuitry within a power over Ethernet (PoE) device detects fault conditions within power and data distribution lines coupled to the power feed circuitry. This circuitry includes network interface circuitry coupled to the network in order to exchange both data and power signals. The power interface circuitry also communicatively couples to at least one isolated power supply in order to draw power. The power may then be distributed via the attached network interface circuitry. A fault detection module couples to the power interface circuitry and the network interface circuitry. This fault detection module senses fault conditions associated with the power interface circuitry, network interface circuitry, and associated distribution lines in order to better draw and distribute power signals using the power feed circuitry.

摘要翻译： 以太网供电（PoE）设备内的供电电路检测与供电电路耦合的电源和数据配线内的故障状况。 该电路包括耦合到网络的网络接口电路，以便交换数据和功率信号。 电力接口电路还通信地耦合到至少一个隔离电源以便获取电力。 然后可以通过附接的网络接口电路分配电力。 故障检测模块耦合到电源接口电路和网络接口电路。 该故障检测模块感测与电力接口电路，网络接口电路和相关联的配电线路相关联的故障状况，以便使用供电电路更好地绘制和分配电力信号。

公开(公告)号：US20070071112A1

公开(公告)日：2007-03-29

申请号：US11435672

申请日：2006-05-16

申请人： Amit Gattani ,  Philip Crawley ,  John Camagna

发明人： Amit Gattani ,  Philip Crawley ,  John Camagna

IPC分类号： H04L25/00 ,  H04J3/10

CPC分类号： H04L25/0272

摘要： In a network device, an active Electro-Magnetic Interference (EMI) suppression circuit is coupled in parallel to transmit and receive differential signal lines connecting an Ethernet physical layer (PHY) module and a network connector, actively suppressing EMI in a network communications system that replaces a traditional transformer with an active direct connect interface.

摘要翻译： 在网络设备中，主动电磁干扰（EMI）抑制电路并联耦合以发送和接收连接以太网物理层（PHY）模块和网络连接器的差分信号线，主动抑制网络通信系统中的EMI 用有源直接连接接口代替传统的变压器。