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    Low power and high linearity receivers with reactively biased front ends
    1.
    发明授权
    Low power and high linearity receivers with reactively biased front ends 失效
    具有反应性偏置前端的低功率和高线性接收器

    公开(公告)号：US06625238B2

    公开(公告)日：2003-09-23

    申请号：US09753123

    申请日：2000-12-29

    申请人： Christopher Peter Wieck

    发明人： Christopher Peter Wieck

    IPC分类号： H04B110

    CPC分类号： H03F1/0272 ,  H03F3/1935 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/7239 ,  H04B1/109

    摘要： A radio frequency receiver includes an amplifier and a detector that produces a bias control signal based on a signal environment. A bias level of the amplifier is set according to the bias control signal. Bias levels of other receiver circuits may have similarly adjusted bias levels, including buffers, IF oscillators, mixers, and converters. The invention can be used to increase range of linearity, intermodulation immunity and reduce power consumption by reducing the bias level under typical conditions and relying on the bias control to increase bias levels under adverse signal conditions. The invention has advantages where power is at a premium, particularly when a device is in standby mode, including mobile, portable and hand held pagers and wireless telephones and Internet connections. If standby mode operation in non-maximum signal environments dominates the usage of the receiver, then the invention can substantially increase battery life.

    摘要翻译： 射频接收机包括基于信号环境产生偏置控制信号的放大器和检测器。 根据偏置控制信号设置放大器的偏置电平。 其他接收器电路的偏置电平可以具有类似的调整的偏置电平，包括缓冲器，IF振荡器，混频器和转换器。 本发明可用于通过在典型条件下降低偏置电平并依靠偏置控制来增加不利信号条件下的偏置电平来增加线性度，互调抗扰度和降低功耗。 本发明具有优势，其中功率是非常重要的，特别是当设备处于待机模式时，包括移动便携式和手持寻呼机以及无线电话和因特网连接。 如果在非最大信号环境中的待机模式操作主导了接收机的使用，则本发明可以显着地延长电池寿命。

    Low power CDMA receiver
    6.
    发明授权
    Low power CDMA receiver 失效
    低功率CDMA接收机

    公开(公告)号：US07076009B2

    公开(公告)日：2006-07-11

    申请号：US10718918

    申请日：2003-11-21

    申请人： Christopher Peter Wieck

    发明人： Christopher Peter Wieck

    IPC分类号： H04L27/08

    CPC分类号： H04B1/109 ,  H03F1/0272 ,  H03F3/1935 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/7239

    摘要： The present embodiments provide apparatuses and methods for use in receiving radio frequency signals. In some embodiments, a method receives an input signal comprising data and jamming signals, amplifies the input signal according to a first adjustable bias level and producing a first internal signal. The first internal signal is mixed with an intermediate frequency signal to produce a second internal signal. The method detects a level of a signal that is proportional to a level of the input signal prior to baseband limiting filtering and as such is proportional to a level of the data and jamming signals. A bias control signal is generated that is dependent on the detected level of the detected signal, and the first bias level is adjusted according to the bias control signal. The bias control signal can increase as the level of the detected signal increases and can compensate for the jamming signals.

    摘要翻译： 本实施例提供用于接收射频信号的装置和方法。 在一些实施例中，方法接收包括数据和干扰信号的输入信号，根据第一可调偏置电平放大输入信号并产生第一内部信号。 第一内部信号与中频信号混合以产生第二内部信号。 该方法检测在基带限制滤波之前与输入信号的电平成正比的信号电平，并且与信号的电平和干扰信号成比例。 产生取决于检测到的信号的检测电平的偏置控制信号，并且根据偏置控制信号调整第一偏置电平。 偏置控制信号随检测信号的电平增加而增加，可以补偿干扰信号。

    Electronic device with attachment and switching between batteries therefor
    7.
    发明授权
    Electronic device with attachment and switching between batteries therefor 失效
    具有附件和电池之间切换的电子设备

    公开(公告)号：US07023111B2

    公开(公告)日：2006-04-04

    申请号：US10225409

    申请日：2002-08-20

    申请人： Christopher Peter Wieck

    发明人： Christopher Peter Wieck

    IPC分类号： H02J1/00

    CPC分类号： G06F1/266 ,  H02J7/0063 ,  H02J2007/0067 ,  Y10T307/391 ,  Y10T307/50 ,  Y10T307/625 ,  Y10T307/729

    摘要： A host device such as a camera, PDA, etc. can have an attachment such as a wireless modem, with both host and attachment having respective batteries. Some loads in the host are always powered by the host battery, and some loads in the attachment are always powered by the attachment battery, but some other loads in the attachment are selectively powered by either the host or attachment battery depending on a power consumption and/or the relationship between the charges remaining in the batteries.

    摘要翻译： 诸如相机，PDA等的主机设备可以具有诸如无线调制解调器的附件，主机和附件都具有相应的电池。 主机中的一些负载总是由主机供电，并且附件中的一些负载总是由附件电池供电，但附件中的一些其他负载由主机或附件电池选择性地由功率消耗和 /或电池剩余电量之间的关系。

    Low-power CDMA receiver
    8.
    发明授权
    Low-power CDMA receiver 失效
    低功耗CDMA接收机

    公开(公告)号：US06668028B1

    公开(公告)日：2003-12-23

    申请号：US09539165

    申请日：2000-03-29

    申请人： Christopher Peter Wieck

    发明人： Christopher Peter Wieck

    IPC分类号： H04B110

    CPC分类号： H04B1/109 ,  H03F1/0272 ,  H03F3/1935 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/7239

    摘要： A first amplifier amplifies a radio frequency signal into a first stage signal, a detector produces a bypass signal based on the environment in which the receiver is operating. A switch provides the first stage signal or the first stage signal filtered by a radio frequency filter based on the bypass signal is not asserted. Optionally, the detector also produces a bias control signal and bias generators set the bias levels of the amplifiers according to the bias control signal. The invention increases linear range RF amplification stages. Power consumption is reduced by reducing the amplification (and optionally the bias levels) used under typical conditions. The invention is advantageous for applications where power is at a premium and the receiver, or at least its front end, operates while the device is in standby mode. Such applications include mobile, portable and hand held pagers and wireless telephones and Internet connections.

    摘要翻译： 第一放大器将射频信号放大到第一级信号，检测器基于接收器工作的环境产生旁路信号。 开关提供基于旁路信号的无线电频率滤波器滤波的第一级信号或第一级信号。 可选地，检测器还产生偏置控制信号，偏置发生器根据偏置控制信号设置放大器的偏置电平。 本发明增加了线性范围RF放大级。 通过减少在典型条件下使用的放大（和可选的偏置电平）来降低功耗。 本发明对于在功率非常高的应用中是有利的，并且接收器或至少其前端在器件处于待机模式时工作。 这样的应用包括移动，便携式和手持寻呼机以及无线电话和因特网连接。

    CDMA receiver architecture for lower bypass switch point
    10.
    发明授权
    CDMA receiver architecture for lower bypass switch point 失效

    公开(公告)号：US07061993B2

    公开(公告)日：2006-06-13

    申请号：US09942360

    申请日：2001-08-29

    申请人： Christopher Peter Wieck

    发明人： Christopher Peter Wieck

    IPC分类号： H03K9/00 ,  H04L27/06 ,  H04L27/14 ,  H04L27/22

    CPC分类号： H04B1/71 ,  H03F2203/7239 ,  H03G1/0088 ,  H04B1/109

    摘要： A bypass circuit around a filter and RF amplifier of a front end device is activated when a received signal strength (RSS) passes a threshold in which the filter and RF amplifier are not necessary to filter/boost the received signal for processing in subsequent electronics (mixers, SAW filters, AGC amps, etc). A control device compares the RSS to the threshold and activates the bypass circuit. The bypass circuit is a switch coupled between an input of the filter and an output of the RF amplifier. The RF amplifier is shutdown when the bypass circuit is activated. The present invention may be used in combination with an LNA bypass to further decrease power consumption.