Receiver having a variable threshold slicer stage and a method of updating the threshold levels of the slicer stage
    1.
    发明授权
    Receiver having a variable threshold slicer stage and a method of updating the threshold levels of the slicer stage 有权
    具有可变阈值限幅器级的接收器和更新限幅器级的阈值电平的方法

    公开(公告)号:US07295630B2

    公开(公告)日:2007-11-13

    申请号:US10015848

    申请日:2001-12-10

    IPC分类号: H03K9/00 H03D1/04

    CPC分类号: H04L25/061

    摘要: A receiver having a variable bit slicer for detecting bits in a demodulated signal, comprises a demodulator (14) for deriving a demodulated bit rate signal, means (36) for storing a plurality of threshold values, each of the threshold values being selectively adjustable, means (28, 38) for selecting the threshold value for comparison with the current bit signal (Sn) in response to a sequence of N bits (where N is at least 2) (Bn-1, Bn-2) received prior to the current bit (Bn) and means (38, 40) for using the current bit to update the selected threshold value.Also disclosed is a method of dc offset correction.

    摘要翻译: 具有用于检测解调信号中的比特的可变比特限制器的接收机包括用于导出解调比特率信号的解调器(14),用于存储多个阈值的装置(36),每个阈值可选择性地调整, 用于响应于N位序列(其中N至少为2),选择用于与当前位信号(S SUB n N)进行比较的阈值的装置(28,38)(B< 在当前位(B SUB)之前接收的n-1,b-n-2)和用于使用当前位的装置(38,40) 更新所选择的阈值。 还公开了一种直流偏移校正的方法。

    MULTI-MODE RADIO TRANSMITTERS AND A METHOD OF THEIR OPERATION
    2.
    发明申请
    MULTI-MODE RADIO TRANSMITTERS AND A METHOD OF THEIR OPERATION 审中-公开
    多模无线电发射机及其操作方法

    公开(公告)号:US20100233977A1

    公开(公告)日:2010-09-16

    申请号:US12293815

    申请日:2007-03-26

    IPC分类号: H04B1/04

    摘要: A multi-mode radio transmitter for use in mobile radio cellular standards, such as 2G, 2.5G and 3G, and a method of operating the transmitter in which an input signal is modulated independently of controlling the drive of a power amplifier (PA) module (40). The transmitter comprises circuitry (12, 60) for extracting the phase (θ) and amplitude (R) components from envelope information in the input signal. A modulator (110) uses the phase component (θ) to produce a constant-envelope signal comprising a phase modulated real signal at the transmitter frequency. This signal is multiplied in a multiplier (72) with either a fixed bias voltage (Vg1) to produce a constant envelope signal or a low level envelope tracking signal derived from an amplitude component (R) by a first amplitude control circuit (78) to produce a signal modulated exactly by the amplitude component. An output from the multiplier is applied to the PA module (40) having a control input (41). The PA module is controllable in a plurality of manners dependent on the characteristics and the required output power of the signal being transmitted. These manners include applying a predetermined fixed voltage to the control input or a less precise envelope tracking signal which is derived by a second amplitude control circuit (120) from the amplitude component (R).

    摘要翻译: 一种用于诸如2G,2.5G和3G的移动无线电蜂窝标准的多模式无线电发射机,以及一种操作发射机的方法,其中输入信号被独立于对功率放大器(PA)模块的驱动进行调制 (40)。 发射机包括用于从输入信号中的包络信息中提取相位(& L)和振幅(R)分量的电路(12,60)。 调制器(110)使用相位分量(& t)来产生包含发射机频率的相位调制实信号的恒包络信号。 该信号在具有固定偏置电压(Vg1)的乘法器(72)中相乘以产生由第一幅度控制电路(78)从幅度分量(R)导出的恒定包络信号或低电平包络跟踪信号, 产生由幅度分量精确调制的信号。 来自乘法器的输出被应用于具有控制输入(41)的PA模块(40)。 PA模块可以根据正在传输的信号的特性和所需的输出功率以多种方式进行控制。 这些方式包括将预定的固定电压施加到控制输入或由振幅分量(R)由第二幅度控制电路(120)导出的较不精确的包络跟踪信号。

    Polyphase receivers
    3.
    发明授权
    Polyphase receivers 有权
    多相接收器

    公开(公告)号:US07092461B1

    公开(公告)日:2006-08-15

    申请号:US09710830

    申请日:2000-11-13

    IPC分类号: H03D3/22 H04L27/22

    摘要: A polyphase receiver comprises an RF front end (10 to 28) for receiving a wanted data signal modulated on a carrier signal and for producing quadrature related low IF signals, an image rejection filter formed by a polyphase filter (30) for filtering the quadrature related low IF signals, soft limiting means (36,38) for compressing the dynamic range of the filtered quadrature related IF signals and a signal demodulator (41) for recovering the data signal. The soft limiting means (36,38) has a characteristic which is substantially linear at signal levels 10 dB below a predetermined minimum wanted signal level, moves into compression for higher signal levels and hard limits at substantially 10 dB above the desired receiver sensitivity which avoids degrading the sensitivity of the receiver.

    摘要翻译: 多相接收机包括用于接收在载波信号上调制的有用数据信号并用于产生正交相关低IF信号的RF前端(10至28),由多相滤波器(30)形成的用于滤波正交相关 低IF信号,用于压缩滤波正交相关IF信号的动态范围的软限幅装置(36,38)和用于恢复数据信号的信号解调器(41)。 软限制装置(36,38)具有在预定的最小有用信号电平以下10dB的信号电平处基本上线性的特性,进入压缩以达到高于期望接收机灵敏度的基本上10dB的较高信号电平和硬限制,这避免了 降低接收机的灵敏度。

    Radio receiver
    4.
    发明授权
    Radio receiver 有权
    无线电接收机

    公开(公告)号:US07116965B2

    公开(公告)日:2006-10-03

    申请号:US09999369

    申请日:2001-10-31

    IPC分类号: H04B1/26

    摘要: A radio receiver configurable to operate in either a low-IF or a zero-IF mode comprises a quadrature down-converter (108,110,112,114) for generating in-phase (I) and quadrature (Q) signals at an intermediate frequency and a complex filter (202) for performing image rejection filtering. One of the outputs (Q) of the filter (202) is terminated, the other (I) is passed to a non-complex ADC (206). The output from the ADC is processed digitally then a quadrature signal generator (212,214) generates quadrature-related IF signals which are passed to a down-converter (216,218) for conversion to baseband signals. By enabling analogue-to-digital conversion and channel filtering to be performed at IF on non-complex signals, significant power savings are possible. Further, the flexibility of the receiver is enhanced, enabling it to operate efficiently in both low-IF and zero-IF modes.

    摘要翻译: 可配置为以低IF或零中频模式工作的无线电接收机包括用于在中频产生同相(I)和正交(Q)信号的正交下变频器(108,110,112,114)和复数滤波器 202),用于执行镜像抑制滤波。 滤波器(202)的输出(Q)中的一个终止,另一个(I)被传递到非复数ADC(206)。 来自ADC的输出被数字地处理,然后正交信号发生器(212,214)产生正交相关的IF信号,其被传递到用于转换为基带信号的下变频器(216,218)。 通过在IF复用信号上实现模数转换和信道滤波,可实现显着的功率节省。 此外,增强了接收机的灵活性,使其能够在低IF和零中频模式下有效地工作。

    Radio receiver
    5.
    发明授权
    Radio receiver 失效
    无线电接收机

    公开(公告)号:US06954628B2

    公开(公告)日:2005-10-11

    申请号:US09992909

    申请日:2001-11-05

    CPC分类号: H04B1/406 H04B1/30

    摘要: A radio receiver is configurable to operate in both low-IF and zero-IF modes with maximum re-use of of analogue and digital circuitry between modes. The receiver comprises a quadrature down-converter for generating in-phase (I) and quadrature (Q) signals at an intermediate frequency and a complex filter for performing image rejection filtering. In the low-IF mode, one of the outputs (Q) of the filter is terminated, the other (I) is digitised by a non-complex ADC then the digital signal is filtered and decimated. Quadrature-related IF signals are then re-generated before down-conversion and demodulation. In the zero-IF mode, both outputs of the filter are digitised and processed in parallel before demodulation. By enabling analogue-to-digital conversion and channel filtering to be performed at low-IF on non-complex signals, use of just two non-complex ADCs is possible, thereby avoiding duplication of circuitry and providing significant power savings.

    摘要翻译: 无线电接收器可配置为在低中频和零中频两种模式下工作,最多可在模式之间重复使用模拟和数字电路。 接收机包括用于产生中频的同相(I)和正交(Q)信号的正交下变频器和用于执行镜像抑制滤波的复数滤波器。 在低IF模式中,滤波器的输出(Q)中的一个终止,另一个(I)由非复数ADC数字化,然后对数字信号进行滤波和抽取。 然后在下转换和解调之前重新生成正交相关的IF信号。 在零中频模式下,滤波器的两个输出在解调之前并行进行数字化处理。 通过在非复杂信号的低IF上实现模数转换和信道滤波,只需使用两个非复杂A​​DC即可,从而避免重复电路并提供显着的功率节省。

    Radio receiver
    6.
    发明授权
    Radio receiver 有权
    无线电接收机

    公开(公告)号:US07120415B2

    公开(公告)日:2006-10-10

    申请号:US11219575

    申请日:2005-09-02

    IPC分类号: H04B1/26

    CPC分类号: H04B1/406 H04B1/30

    摘要: A radio receiver is configurable to operate in both low-IF and zero-IF modes with maximum re-use of of analogue and digital circuitry between modes. The receiver comprises a quadrature down-converter (108,110,112,114) for generating in-phase (I) and quadrature (Q) signals at an intermediate frequency and a complex filter (516) for performing image rejection filtering.In the low-IF mode, one of the outputs (Q) of the filter (516) is terminated, the other (I) is digitised by a non-complex ADC (520), then the digital signal is filtered and decimated. Quadrature-related IF signals are then re-generated before down-conversion and demodulation.In the zero-IF mode, both outputs of the filter (516) are digitised and processed in parallel before demodulation.By enabling analogue-to-digital conversion and channel filtering to be performed at low-IF on non-complex signals, use of just two non-complex ADCs (120,1620) is possible, thereby avoiding duplication of circuitry and providing significant power savings.

    摘要翻译: 无线电接收器可配置为在低中频和零中频两种模式下工作,最多可在模式之间重复使用模拟和数字电路。 接收机包括用于产生中频的同相(I)和正交(Q)信号的正交下变频器(108,110,112,114)和用于执行镜像抑制滤波的复数滤波器(516)。 在低IF模式中,滤波器(516)的输出(Q)中的一个终止,另一个(I)由非复数ADC(520)数字化,然后对数字信号进行滤波和抽取。 然后在下转换和解调之前重新生成正交相关的IF信号。 在零中频模式下,滤波器(516)的两个输出在解调之前被并行化并进行处理。 通过在非复信号的低中频上实现模数转换和信道滤波,只需使用两个非复杂A​​DC(120,1620),从而避免重复电路并提供显着的功率节省 。

    Albumin fusion proteins
    8.
    发明授权
    Albumin fusion proteins 有权
    白蛋白融合蛋白

    公开(公告)号:US08143026B2

    公开(公告)日:2012-03-27

    申请号:US12534585

    申请日:2009-08-03

    摘要: The present invention encompasses albumin fusion proteins. Nucleic acid molecules encoding the albumin fusion proteins of the invention are also encompassed by the invention, as are vectors containing these nucleic acids, host cells transformed with these nucleic acids vectors, and methods of making the albumin fusion proteins of the invention and using these nucleic acids, vectors, and/or host cells. Additionally the present invention encompasses pharmaceutical compositions comprising albumin fusion proteins and methods of treating, preventing, or ameliorating diseases, disorders or conditions using albumin fusion proteins of the invention.

    摘要翻译: 本发明包括白蛋白融合蛋白。 编码本发明的白蛋白融合蛋白的核酸分子也包括在本发明中,载体含有这些核酸,用这些核酸载体转化的宿主细胞,以及制备本发明的白蛋白融合蛋白并使用这些核酸的方法 酸,载体和/或宿主细胞。 另外,本发明包括包含白蛋白融合蛋白的药物组合物以及使用本发明的白蛋白融合蛋白来治疗,预防或改善疾病,病症或病症的方法。