Direct conversion RF transceiver for wireless communications
    111.
    发明授权
    Direct conversion RF transceiver for wireless communications 有权
    直接转换RF收发器用于无线通信

    公开(公告)号:US07733981B2

    公开(公告)日:2010-06-08

    申请号:US12168084

    申请日:2008-07-04

    IPC分类号: H03K9/00 H04L27/06

    摘要: A single chip radio transceiver includes circuitry that enables received wideband RF signals to be down converted to base band frequencies and base band signals to be up converted to wideband RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry includes a low noise amplifier, automatic frequency control circuitry for aligning the LO frequency with the frequency of the received RF signals, signal power measuring circuitry for measuring the signal to signal and power ratio and for adjusting frontal and rear amplification stages accordingly, and finally, filtering circuitry to filter high and low frequency interfering signals including DC offset.

    摘要翻译: 单芯片无线电收发机包括使接收的宽带RF信号下变频到基带频率和基带信号在传输之前被上转换成宽带RF信号的电路,而不需要转换到中频。 该电路包括一个低噪声放大器,自动频率控制电路,用于将LO频率与接收到的RF信号的频率对准,信号功率测量电路,用于测量信号与信号和功率比,并相应地调整正面和后置放大级;以及 最后,滤波电路对高频和低频干扰信号进行滤波,包括直流偏移。

    MULTISERVICE COMMUNICATION DEVICE WITH DEDICATED ENVIRONMENTAL MONITORING
    113.
    发明申请
    MULTISERVICE COMMUNICATION DEVICE WITH DEDICATED ENVIRONMENTAL MONITORING 有权
    具有专用环境监测的多设备通信设备

    公开(公告)号:US20100110910A1

    公开(公告)日:2010-05-06

    申请号:US12264372

    申请日:2008-11-04

    IPC分类号: G06F11/30

    摘要: A multiservice communication device includes a plurality of transceivers that wirelessly transceive data with a corresponding plurality of networks in accordance with a corresponding plurality of network protocols. An environmental monitoring receiver processes received RF signals over a broadband spectrum and that generates environmental data in response thereto. A processing module processes the environmental data and generates a least one control signal in response thereto, the at least one control signal for adapting at least one of the plurality of transceivers based on the environmental data. In an embodiment of the present invention, the environmental monitoring receiver can be implemented via one of the plurality of transceivers when operating in an environmental monitoring mode.

    摘要翻译: 多业务通信设备包括根据相应的多个网络协议与相应的多个网络无线地收发数据的多个收发机。 环境监测接收机通过宽带频谱处理接收到的RF信号,并响应于此产生环境数据。 处理模块处理环境数据并响应于此产生至少一个控制信号,所述至少一个控制信号用于根据环境数据调整多个收发器中的至少一个。 在本发明的实施例中,环境监测接收机可以在环境监测模式下操作时通过多个收发器之一来实现。

    Analog received signal strength indication in an RF transceiver
    114.
    发明授权
    Analog received signal strength indication in an RF transceiver 失效
    RF收发器中的模拟接收信号强度指示

    公开(公告)号:US07668514B2

    公开(公告)日:2010-02-23

    申请号:US11264392

    申请日:2005-11-01

    IPC分类号: H04B17/00

    CPC分类号: H04B17/318

    摘要: An integrated circuit radio transceiver and method therefor comprises a receiver front end that further includes a plurality of in-phase and quadrature phase receive processing block operable at first and second frequency bands wherein each of the receive processing blocks defines an ingoing signal path and further includes a plurality of filtering and amplification blocks disposed within the corresponding ingoing signal path, a plurality of RSSI blocks coupled to receive an ingoing analog signal from a corresponding plurality of nodes disposed throughout the ingoing signal path, each of the plurality of received signal strength indicator blocks producing a signal strength indication, and wherein a baseband processor is operable to receive a selected signal strength indication and to produce at least one gain setting to at least one amplification block within the in-phase or quadrature phase receive processing blocks. In operation, the baseband processor receive a signal strength indication from each RSSI block to determine a total amount of gain and appropriate gain distribution within the receive signal path.

    摘要翻译: 一种集成电路无线电收发机及其方法包括接收器前端,其还包括在第一和第二频带处可操作的多个同相和正交相位接收处理块,其中每个接收处理块定义入轨信号路径,并且还包括 多个滤波和放大块,布置在相应的加入信号路径内,多个RSSI块被耦合以接收来自设置在整个输入信号路径上的相应多个节点的输入模拟信号,多个接收信号强度指示块 产生信号强度指示,并且其中基带处理器可操作以接收所选择的信号强度指示并且产生至少一个增益设置到同相或正交相位接收处理块内的至少一个放大块。 在操作中,基带处理器从每个RSSI块接收信号强度指示,以确定接收信号路径内的增益总量和合适的增益分布。

    TRANSMITTER PRE-DISTORTION ACROSS WIDE TRANSMIT POWER DYNAMIC RANGE
    115.
    发明申请
    TRANSMITTER PRE-DISTORTION ACROSS WIDE TRANSMIT POWER DYNAMIC RANGE 有权
    发射机预失真通过广义发射功率动态范围

    公开(公告)号:US20090207935A1

    公开(公告)日:2009-08-20

    申请号:US12031681

    申请日:2008-02-14

    申请人: Arya Reza Behzad

    发明人: Arya Reza Behzad

    IPC分类号: H04L25/49

    摘要: An integrated circuit radio transceiver and method therefor includes an integrated circuit radio transceiver operable to provide pre-distortion settings that correspond to specified analog transmit path gain levels. Further, a change in gain is provided solely through digital gain when the new gain is within a specified range. If the gain change is not within the specified range, the gain is provided by a new transmit path gain module and, if necessary, with additional digital gain. Additionally, a new pre-distortion setting is applied to correspond to the new analog transmit path gain setting.

    摘要翻译: 集成电路无线电收发器及其方法包括集成电路无线电收发器,其可操作以提供对应于指定的模拟发送路径增益水平的预失真设置。 此外,当新增益在指定范围内时,仅通过数字增益提供增益的变化。 如果增益变化不在规定的范围内,则增益由新的发送路径增益模块提供,如有必要,则增加额外的数字增益。 此外,应用新的预失真设置以对应于新的模拟发送路径增益设置。

    Current mode phase shifter, mixer and amplifier
    116.
    发明授权
    Current mode phase shifter, mixer and amplifier 有权
    电流模式移相器,混频器和放大器

    公开(公告)号:US07545856B2

    公开(公告)日:2009-06-09

    申请号:US11224610

    申请日:2005-09-12

    IPC分类号: H04B1/38

    摘要: An integrated circuit radio transceiver includes a phase shift block that is operable to produce a phase shifted current signal at an output of the phase shift block and a mixer with a low input impedance that is operable to produce a phase and frequency shifted output current signal based upon the phase shifted current signal. One aspect of the present invention is that the phase shift block produces an output as a current signal and the mixer block is operably disposed and formed to receive the current signal produced by the phase shift block. Similarly, an operational amplifier configured in a low input impedance mode is provided to receive and amplify a current signal mixer output, all to maximize signal processing head room reduce circuit noise and improve linearity.

    摘要翻译: 集成电路无线电收发机包括相移块,其可操作以在相移块的输出处产生相移电流信号,以及具有低输入阻抗的混频器,其可操作以产生基于相位和频移的输出电流信号 相移电流信号。 本发明的一个方面是相移块产生作为电流信号的输出,并且混合器块可操作地设置和形成以接收由相移块产生的电流信号。 类似地,以低输入阻抗模式配置的运算放大器被提供以接收和放大当前信号混频器输出,所有这些都使信号处理最大化房间减小电路噪声并提高线性度。

    Highly accurate temperature sensor employing mixed-signal components
    117.
    发明授权
    Highly accurate temperature sensor employing mixed-signal components 有权
    采用混合信号元件的高精度温度传感器

    公开(公告)号:US07369816B2

    公开(公告)日:2008-05-06

    申请号:US10912837

    申请日:2004-08-06

    CPC分类号: H03G3/3042 H03G3/3068

    摘要: A radio transceiver includes circuitry that enables received RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry includes a temperature sensing module that produces accurate voltage level readings that may be mapped into corresponding temperature values. A processor, among other actions, adjusts gain level settings based upon detected temperature values. One aspect of the present invention further includes repetitively inverting voltage signals across a pair of semiconductor devices being used as temperature sensors to remove a common mode signal to produce an actual temperature-voltage curve. In one embodiment of the invention, the circuitry further includes a pair of amplifiers to facilitate setting a slope of the voltage-temperature curve.

    摘要翻译: 无线电收发机包括使得接收的RF信号能够被下变频到基带频率的电路,并且基带信号在传输之前被上变频到RF信号,而不需要转换到中频。 电路包括温度感测模块,其产生可被映射到相应温度值的精确电压电平读数。 除了其他动作之外,处理器还根据检测到的温度值来调节增益水平设置。 本发明的一个方面还包括将用作温度传感器的一对半导体器件的电压信号重复反相以去除共模信号以产生实际的温度 - 电压曲线。 在本发明的一个实施例中,电路还包括一对放大器,以便于设置电压 - 温度曲线的斜率。

    Temperature sensor insensitive to device offsets with independent adjustment of slope and reference temperature
    119.
    发明授权
    Temperature sensor insensitive to device offsets with independent adjustment of slope and reference temperature 有权
    温度传感器对设备偏移不敏感,独立调整斜率和参考温度

    公开(公告)号:US07342455B2

    公开(公告)日:2008-03-11

    申请号:US11545397

    申请日:2006-10-10

    IPC分类号: H03F3/04

    摘要: A radio transceiver includes circuitry that enables received RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry includes a temperature sensing module that produce accurate voltage level readings may be mapped into corresponding temperature values. A processor, among other actions, adjusts gain level settings based upon detected temperature values. One aspect of the present invention further includes repetitively inverting voltage signals across a pair of semiconductor devices beings used as temperature sensors to remove a common mode signal to produce an actual temperature-voltage curve. In one embodiment of the invention, the circuitry further includes a pair of amplifiers to facilitate setting a slope of the voltage-temperature curve.

    摘要翻译: 无线电收发机包括使得接收的RF信号能够被下变频到基带频率的电路,并且基带信号在传输之前被上变频到RF信号,而不需要转换到中频。 电路包括产生精确电压电平读数的温度感测模块可以映射到对应的温度值。 除了其他动作之外,处理器还根据检测到的温度值来调节增益水平设置。 本发明的一个方面还包括将用作温度传感器的一对半导体器件的电压信号重复反相以去除共模信号以产生实际的温度 - 电压曲线。 在本发明的一个实施例中,电路还包括一对放大器,以便于设置电压 - 温度曲线的斜率。

    RF transceiver with compact stacked mixer design for multiple frequency conversion
    120.
    发明授权
    RF transceiver with compact stacked mixer design for multiple frequency conversion 有权
    RF收发器采用紧凑型堆叠式混频器设计,可实现多种频率转换

    公开(公告)号:US07233774B2

    公开(公告)日:2007-06-19

    申请号:US10643420

    申请日:2003-08-19

    申请人: Arya Reza Behzad

    发明人: Arya Reza Behzad

    IPC分类号: H04B1/40 H04B1/16

    摘要: A single chip radio transceiver includes circuitry that enables received wideband RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to wideband RF signals prior to transmission without requiring conversion to an intermediate frequency. The circuitry includes a low noise amplifier, automatic frequency control circuitry for aligning a local oscillation frequency with the frequency of the received RF signals, signal power measuring circuitry for measuring the signal to signal and power ratio and for adjusting frontal and rear amplification stages accordingly, and finally, filtering circuitry to filter high and low frequency interfering signals including DC offset. The circuitry further includes a multi-stage mixer that produces current signal outputs from each mixing stage to a subsequent stage thereby avoiding a need for intermediate transconductance and output stages to convert between current signals and voltage signals.

    摘要翻译: 单芯片无线电收发器包括使接收的宽带RF信号下变频到基带频率的电路,并且基带信号在传输之前被上变频到宽带RF信号,而不需要转换到中频。 该电路包括一个低噪声放大器,用于使本地振荡频率与接收到的RF信号的频率对准的自动频率控制电路,用于测量信号与信号和功率比的信号功率测量电路,以及相应地调整正面和后置放大级, 最后,滤波电路来滤除高频和低频干扰信号,包括直流偏移。 该电路还包括多级混频器,其从每个混频级产生到后一级的电流信号输出,从而避免需要中间跨导和输出级以在电流信号和电压信号之间转换。