公开(公告)号：US06512419B1

公开(公告)日：2003-01-28

申请号：US09952925

申请日：2001-09-14

申请人： Andrew Adams ,  Neil Weste ,  Stephen Avery

发明人： Andrew Adams ,  Neil Weste ,  Stephen Avery

IPC分类号： H03L708

CPC分类号： H03L7/10 ,  H03F1/0277 ,  H03F3/45183 ,  H03F3/45659 ,  H03F3/72 ,  H03F2203/45418 ,  H03F2203/45652 ,  H03F2203/7203 ,  H03F2203/7224 ,  H03J2200/10 ,  H03L7/07 ,  H03L7/0891 ,  H03L7/099 ,  H03L7/18 ,  H03L7/185

摘要： A local oscillator calibrator comprises a main charge pump that drives a voltage controlled oscillator (VCO) through a loop filter. A second, replica charge pump can also drive the VCO, but is setup to output only its most positive or most negative analog output control voltage. Since the construction and characteristics of the replica charge pump duplicate the main charge pump, the main charge pump's minimum and maximum analog control outputs can be cloned out to the VCO on demand. A VCO calibration procedure therefore includes switching the VCO to each of its ranges set by a bank of fixed capacitors, and using the replica charge pump to drive the VCO to its minimum and maximum frequency for each range setting. The min-max frequency data is stored in a lookup table, and operational requests to switch to a new channel frequency can be supported with a priori information about which fixed-capacitor range selection will be best.

摘要翻译： 本地振荡器校准器包括通过环路滤波器驱动压控振荡器（VCO）的主电荷泵。 第二个复制电荷泵也可以驱动VCO，但是设置为仅输出其最正或最负的模拟输出控制电压。 由于复制电荷泵的结构和特性与主电荷泵重复，主电荷泵的最小和最大模拟控制输出可以根据需要克隆到VCO。 因此，VCO校准程序包括将VCO切换到由固定电容器组设置的每个范围，并且使用复制电荷泵将VCO驱动到每个范围设置的最小和最大频率。 最小最大频率数据存储在查找表中，并且可以通过关于哪个固定电容器范围选择将是最佳的先验信息来支持切换到新的信道频率的操作请求。

公开(公告)号：US07164651B2

公开(公告)日：2007-01-16

申请号：US11380165

申请日：2006-04-25

申请人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David J. Skellern ,  Richard Keaney

发明人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David J. Skellern ,  Richard Keaney

IPC分类号： H04J11/00 ,  H04Q7/24 ,  H04B1/40

CPC分类号： H04B1/28 ,  H04B1/405

摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。

公开(公告)号：US20070004372A1

公开(公告)日：2007-01-04

申请号：US11470330

申请日：2006-09-06

申请人： Andrew Adams ,  Neil Weste

发明人： Andrew Adams ,  Neil Weste

IPC分类号： H04B1/28

CPC分类号： H04B1/0014 ,  H03F1/0261 ,  H03F3/19 ,  H03F3/68 ,  H04B1/40 ,  H04W88/02

摘要： A monolithic radio integrated circuit includes a substrate, a set of one or more analog subcircuits on the substrate, a programmable bias current supply on the substrate coupled to the set to provide bias currents to the analog subcircuits of the set including programmable bias currents to one or more analog subcircuits forming a first subset of the set, and a digital subsection coupled to the programmable bias supply to determine the bias currents supplied to the analog subcircuits of the first subset, such that one or more characteristics of the radio integrated circuit are modifiable by programming the programmable bias supply.

摘要翻译： 单片无线电集成电路包括衬底，衬底上的一组或多个模拟子电路，耦合到该组的衬底上的可编程偏置电流源，以向该组的模拟子电路提供偏置电流，包括可编程偏置电流至一个 形成该集合的第一子集的多个或多个模拟子电路，以及耦合到可编程偏置电源的数字部分，以确定提供给第一子集的模拟子电路的偏置电流，使得无线电集成电路的一个或多个特性是可修改的 通过编程可编程偏置电源。

公开(公告)号：US20060194614A1

公开(公告)日：2006-08-31

申请号：US11380165

申请日：2006-04-25

申请人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David Skellern ,  Richard Keaney

发明人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David Skellern ,  Richard Keaney

IPC分类号： H04B1/28 ,  H04B1/38

CPC分类号： H04B1/28 ,  H04B1/405

摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。

公开(公告)号：US20050237924A1

公开(公告)日：2005-10-27

申请号：US11168011

申请日：2005-06-27

申请人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David Skellern ,  Richard Keaney

发明人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David Skellern ,  Richard Keaney

IPC分类号： H04J11/00 ,  H04L12/28

CPC分类号： H04B1/28 ,  H04B1/405

摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。

公开(公告)号：US06665339B1

公开(公告)日：2003-12-16

申请号：US09877398

申请日：2001-06-08

申请人： Andrew Adams ,  Neil Weste

发明人： Andrew Adams ,  Neil Weste

IPC分类号： H03K908

CPC分类号： H03F1/0261 ,  H03F2200/294 ,  H03F2200/372 ,  H03J2200/10 ,  H03L7/07

摘要： A monolithic transceiver integrated circuit that includes a substrate, a transmitter subsystem of one or more subcircuits on the substrate, and a receiver subsystem of one or more, subcircuits on the substrate. Also included is a bias current supply coupled to the receiver and transmitter subsystems to provide bias current. The bias current supply includes a first bias circuit on the substrate coupled to, and to supply bias current to, a first subcircuit of the transmitter subsystem. The first bias circuit includes a first current modulator having a first switch input to indicate that the bias current is to start or stop being supplied to the first subcircuit. The first current modulator is to control the rate of change of supplied bias current in response to the first switch input. The first subcircuit may be a power amplifier. The control of the rate of change reduces oscillator pull in at least one oscillator included in the integrated circuit.

摘要翻译： 一种单片收发器集成电路，包括衬底，衬底上的一个或多个子电路的发射器子系统，以及衬底上的一个或多个子电路的接收器子系统。 还包括耦合到接收器和发射机子系统以提供偏置电流的偏置电流源。 偏置电流源包括耦合到发射机子系统的第一子电路并且向偏置电流提供偏置电流的衬底上的第一偏置电路。 第一偏置电路包括具有第一开关输入的第一电流调制器，以指示偏置电流要被开始或停止提供给第一子电路。 第一电流调制器是响应于第一开关输入来控制所提供的偏置电流的变化率。 第一个子电路可以是功率放大器。 变化率的控制降低了集成电路中至少包含一个振荡器的振荡器拉动。

公开(公告)号：US07149246B1

公开(公告)日：2006-12-12

申请号：US10716953

申请日：2003-11-18

申请人： Andrew Adams ,  Neil Weste

发明人： Andrew Adams ,  Neil Weste

IPC分类号： H03K7/08 ,  H04M1/00 ,  H04M9/00 ,  H01L29/00

CPC分类号： H03F1/0261 ,  H03F2200/294 ,  H03F2200/372 ,  H03J2200/10 ,  H03L7/07

摘要： A monolithic transceiver integrated circuit that includes a substrate, a transmitter subsystem of one or more subcircuits on the substrate, and a receiver subsystem of one or more subcircuits on the substrate. Also included is a bias current supply coupled to the receiver and transmitter subsystems to provide bias current. The bias current supply includes a first bias circuit on the substrate coupled to, and to supply bias current to, a first subcircuit of the transmitter subsystem. The first bias circuit includes a first current modulator having a first switch input to indicate that the bias current is to start or stop being supplied to the first subcircuit. The first current modulator is to control the rate of change of supplied bias current in response to the first switch input. The first subcircuit may be a power amplifier. The control of the rate of change reduces oscillator pull in at least one oscillator included in the integrated circuit.

摘要翻译： 一种单片收发器集成电路，包括衬底，衬底上的一个或多个子电路的发射器子系统，以及衬底上的一个或多个子电路的接收器子系统。 还包括耦合到接收器和发射机子系统以提供偏置电流的偏置电流源。 偏置电流源包括耦合到发射机子系统的第一子电路并且向偏置电流提供偏置电流的衬底上的第一偏置电路。 第一偏置电路包括具有第一开关输入的第一电流调制器，以指示偏置电流要被开始或停止提供给第一子电路。 第一电流调制器是响应于第一开关输入来控制所提供的偏置电流的变化率。 第一个子电路可以是功率放大器。 变化率的控制降低了集成电路中至少包含一个振荡器的振荡器拉动。

公开(公告)号：US07061855B2

公开(公告)日：2006-06-13

申请号：US11168011

申请日：2005-06-27

申请人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David J. Skellern ,  Richard Keaney

发明人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David J. Skellern ,  Richard Keaney

IPC分类号： H04J11/00 ,  H04Q7/24 ,  H04B1/40

CPC分类号： H04B1/28 ,  H04B1/405

摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。

公开(公告)号：US06944121B1

公开(公告)日：2005-09-13

申请号：US09877402

申请日：2001-06-08

申请人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David J. Skellern ,  Richard Keaney

发明人： Neil Weste ,  Andrew Adams ,  Philip Ryan ,  John O'Sullivan ,  David J. Skellern ,  Richard Keaney

IPC分类号： H04J11/00 ,  H04L12/28

CPC分类号： H04B1/28 ,  H04B1/405

摘要： A wireless computer data network includes several untethered mobile units that make ad-hoc data connections with an Internet-connected base station using the IEEE-802.11a standard. Each unit includes a radio transceiver fully integrated on a single semiconductor chip. The receiver portion is a double-conversion superheterodyne type, and shares the same intermediate and local oscillator frequencies with a two-stage up-conversion transmitter. Two on-chip synthesizers that each include a voltage-controlled oscillator and phase-locked loop can be operated independently for each conversion stage, or operated in offset mode. External reference frequencies can be injected for voltage-controlled oscillator and phase-locked loop testing, chip characterization, and automatic compensation modeling. Each mobile and base unit can be outfitted with transmit/receive antenna transfer switches, RF-power amplifiers, and low-noise receiver amplifiers to increase operating range.

摘要翻译： 无线计算机数据网络包括使用IEEE-802.11a标准与互联网连接的基站进行自组织数据连接的若干未受控移动单元。 每个单元包括完全集成在单个半导体芯片上的无线电收发器。 接收器部分是双转换超外差类型，并且与两级上变频发射器共享相同的中间和本地振荡器频率。 每个包括压控振荡器和锁相环的两个片上合成器可以针对每个转换级独立运行，或者以偏移模式运行。 外部参考频率可以注入压控振荡器和锁相环测试，芯片表征和自动补偿建模。 每个移动和基本单元可以配备发射/接收天线转换开关，RF功率放大器和低噪声接收放大器，以提高工作范围。

公开(公告)号：US07110381B1

公开(公告)日：2006-09-19

申请号：US09953461

申请日：2001-09-14

申请人： John O'Sullivan ,  Neil Weste

发明人： John O'Sullivan ,  Neil Weste

IPC分类号： H04L12/50

CPC分类号： H04B7/0814 ,  H04L27/2626 ,  H04L27/2647 ,  H04W84/12 ,  H04W88/02

摘要： A wireless local area network system comprises a 5.0+ GHz radio transceiver with two receiving antennas and one transmitting antenna. A transmitter power amplifier output is connected to the transmitting antenna through a 6–8 pole filter to control spurious signal output. Each receiving antenna is fitted with its own low-noise amplifier followed by a simple bandpass filter. Each bandpass filter feeds a diversity switch with a single output to a single receiver. The radio system constitutes a physical-layer (PHY) part of a wireless local-area network.