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    RADIO RECEIVING APPARATUS AND RADIO COMMUNICATION SYSTEM
    71.
    发明申请
    RADIO RECEIVING APPARATUS AND RADIO COMMUNICATION SYSTEM 审中-公开
    无线电接收设备和无线电通信系统

    公开(公告)号：WO01082492A1

    公开(公告)日：2001-11-01

    申请号：PCT/JP2000/002754

    申请日：2000-04-26

    IPC: H03D3/00 ,  H04B1/28 ,  H04B1/30

    CPC classification number: H04B1/28 ,  H03D3/007

    Abstract: High-quality reception of a radio signal is controlled by increasing the cut-off frequency and preventing suppression of the low-frequency component. A radio signal amplifying means (11) amplifies the received radio signal to generate an amplified signal. A frequency converting means (20) converts the radio signal from the radio frequency to an intermediate frequency by mixing a local oscillation signal and the amplified signal to generate an intermediate frequency signal. A frequency shift control means (31) shifts the frequency of the intermediate frequency signal to the higher side of the frequency band. A frequency inversion control means (32) inverts the low-frequency side of the intermediate frequency signal to the higher side of the frequency band and the high-frequency side to the lower side of the frequency band. An AC coupling means (40) is provided on the output side of a frequency control means (30). A radio signal demodulation means (50) demodulates the output signal from the AC coupling means (40).

    Abstract translation: 无线电信号的高品质接收通过增加截止频率并防止低频分量的抑制来控制。 无线电信号放大装置（11）放大所接收的无线电信号以产生放大的信号。 频率转换装置（20）通过混合本地振荡信号和放大的信号将来自射频的无线电信号转换成中频，以产生中频信号。 频移控制装置（31）将中频信号的频率偏移到频带的较高侧。 频率反转控制装置（32）将中频信号的低频侧反转到频带的高侧，高频侧向频带的下侧反转。 在频率控制装置（30）的输出侧设置AC耦合装置（40）。 无线电信号解调装置（50）解调来自AC耦合装置（40）的输出信号。

    SINGLE CHIP CMOS TRANSMITTER/RECEIVER AND METHOD OF USING SAME
    72.
    发明申请
    SINGLE CHIP CMOS TRANSMITTER/RECEIVER AND METHOD OF USING SAME 审中-公开
    单芯片CMOS发送器/接收器及其使用方法

    公开(公告)号：WO0135529A3

    公开(公告)日：2001-10-11

    申请号：PCT/US0031065

    申请日：2000-11-13

    Applicant: GLOBAL COMM TECHNOLOGY INC

    Inventor： LEE KYEONGHO ,  JEONG DEOG-KYOON ,  PARK JOONBAE ,  KIM WONCHAN

    IPC: H03H11/22 ,  H03L7/089 ,  H03L7/099 ,  H03L7/197 ,  H04B1/28 ,  H04L27/00 ,  H02K7/10 ,  H02K13/02 ,  H02K21/22 ,  H03D3/18 ,  H03D3/24 ,  H03K5/08 ,  H04B1/06 ,  H04B1/38 ,  H04L27/04 ,  H04L27/06 ,  H04L27/08

    CPC classification number: H03L7/0995 ,  H03F2200/372 ,  H03H11/22 ,  H03H2011/0494 ,  H03L7/0891 ,  H03L7/1974 ,  H04B1/28 ,  H04B1/40

    Abstract: The RF communication system includes an antenna that receives/transmits RF signals, a PLL (730) that generates multi-phase clock signals having a frequency different from a carrier frequency and a reference signal having a carrier frequency, a demodulation-mixer (720) that mixes the received RF signals with the multi-phase clock signals having the frequency different from the carrier frequency to output signals having a frequency reduced relative to the carrier frequency, two stage amplification (740, 750) that amplifies a selected channel signal to a required dynamic level, and an A/D converting unit (770 A) for converting the RF signals from the mixing unit into digital signals. The two stage amplification can provide the selected channel signal with sufficient gain, even when an adjacent channel signal is output by the demodulation mixer (720) with greater amplitude or power.

    Abstract translation: RF通信系统包括接收/发送RF信号的天线，产生具有与载波频率不同的频率的多相时钟信号的PLL（730）和具有载波频率的参考信号，解调混频器（720） ，其将接收到的RF信号与具有与载波频率不同的频率的多相时钟信号混合，以输出具有相对于载波频率降低的频率的信号;两级放大（740,750），其将选择的信道信号放大为 所需的动态电平以及用于将来自混合单元的RF信号转换为数字信号的A / D转换单元（770A）。 即使当解调混频器（720）以较大的幅度或功率输出相邻信道信号时，两级放大也可以为选定的信道信号提供足够的增益。

    DIRECT CONVERSION DELTA-SIGMA RECEIVER
    75.
    发明申请
    DIRECT CONVERSION DELTA-SIGMA RECEIVER 审中-公开
    直接转换DELTA SIGMA RECEIVER

    公开(公告)号：WO0046926B1

    公开(公告)日：2001-06-28

    申请号：PCT/US0002665

    申请日：2000-02-02

    Applicant: TECHNOCONCEPTS INC ,  HICKLING RONALD M

    Inventor： HICKLING RONALD M

    IPC: H04B1/28 ,  H03M3/02 ,  H04L27/233

    CPC classification number: H04B1/0014 ,  H04B1/0039 ,  H04B1/28

    Abstract: A wireless receiver receives a wireless signal by inverting the polarity of an incoming waveform on every one half clock cycle of a conversion clock to produce a commutated waveform and converting said commutated waveform to a series of representative digital values using a delta-sigma modulator clocked by said conversion clock. In this way, the receiver operates over a large dynamic range and the use of automatic gain control in the front end may be eliminated.

    Abstract translation: 无线接收器通过在转换时钟的每半个时钟周期反转输入波形的极性来接收无线信号，以产生换向波形，并且使用delta-sigma调制器将所述换向波形转换为一系列代表性数字值，所述delta-sigma调制器由 所述转换时钟。 通过这种方式，接收器可以在大动态范围内工作，并且可以消除前端自动增益控制的使用。

    INTEGRATED RADIO TRANSCEIVER
    76.
    发明申请
    INTEGRATED RADIO TRANSCEIVER 审中-公开
    集成无线收发器

    公开(公告)号：WO01039383A2

    公开(公告)日：2001-05-31

    申请号：PCT/US2000/042265

    申请日：2000-11-20

    IPC: H04B1/28 ,  H04B1/40 ,  H04B1/00

    CPC classification number: H04B1/28 ,  H04B1/40

    Abstract: A radio transceiver comprises a reception path, a transmission path, and a frequency generator with a programmable phase lock loop. The reception path, the transmission path, and the frequency generator share a maximum amount of common circuitry to facilitate implementation of the entire radio transceiver on a single integrated circuit. The reception path includes an amplifier and a quadrature mixer for producing low intermediate frequency signals. The transmission path can be controlled by either a modulated voltage controlled transmitter or an in-phase and quadrature modulator transmitter.

    Abstract translation: 无线电收发机包括接收路径，传输路径和具有可编程锁相环的频率发生器。 接收路径，传输路径和频率发生器共享最大量的公共电路，以便于在单个集成电路上实现整个无线电收发器。 接收路径包括用于产生低中频信号的放大器和正交混频器。 传输路径可以由调制电压控制发射机或同相和正交调制发射机控制。

    AUTOMATIC GAIN CONTROL FOR IMPROVED DECODING OF MULTI-CARRIER SIGNAL
    78.
    发明申请
    AUTOMATIC GAIN CONTROL FOR IMPROVED DECODING OF MULTI-CARRIER SIGNAL 审中-公开
    自动增益控制，用于改进多载波信号的解码

    公开(公告)号：WO00077971A1

    公开(公告)日：2000-12-21

    申请号：PCT/US2000/016159

    申请日：2000-06-12

    IPC: H03G3/30 ,  H04B14/04 ,  H04J1/00 ,  H04J1/05 ,  H04L5/06 ,  H04B1/28 ,  H04B7/005

    CPC classification number: H04J1/05 ,  H03G3/3052 ,  H04L5/06

    Abstract: The circuit has an input signal which is filtered with a first filter having a bandwidth greater than a bandwidth of the desired signal. The filtered signal is then sampled to generate discrete time samples, which is then filtered with a discrete time matched filter. The filtered samples are then scaled with a scaling factor and quantized. A quantity related to an amplitude of the quantized samples is measured, and the scaling factor is adjusted in accordance with the measured quantity. The quantized samples can be further processed and provided to a decoder. The desired signal can be a quadrature modulated signal. The adjustment of the scaling factor can be performed by an automatic gain control (AGC) loop that compares the measured signal power of the quantized samples against a predetermined value to generate error values. The AGC loop then filters the error values to generate the scaling factor.

    Abstract translation: 该电路具有用具有大于所需信号的带宽的带宽的第一滤波器滤波的输入信号。 然后对经滤波的信号进行采样以产生离散时间样本，然后用离散时间匹配滤波器过滤。 然后将经过滤的样品用比例因子缩放并量化。 测量与量化样品的幅度相关的量，并根据测量量调整比例因子。 量化的样本可以进一步处理并提供给解码器。 所需信号可以是正交调制信号。 可以通过自动增益控制（AGC）循环来执行缩放因子的调整，其将量化样本的测量信号功率与预定值进行比较以产生误差值。 然后，AGC环路对误差值进行滤波以生成比例因子。

    RECEIVER CIRCUIT
    79.
    发明申请
    RECEIVER CIRCUIT 审中-公开
    接收电路

    公开(公告)号：WO00069083A1

    公开(公告)日：2000-11-16

    申请号：PCT/US2000/012298

    申请日：2000-05-04

    IPC: H04B1/26 ,  H04B1/28

    CPC classification number: H04B1/28

    Abstract: A radio frequency receiver circuit, for example for receiving digital terrestrial television broadcast signals. Such signals include wanted signals in wanted frequency bands, and may also include interference signals close to the wanted frequency bands. The receiver circuit receives a first intermediate frequency signal, and achieves downconversion by sub-sampling in an analog-digital converter. The sampling rate of the analog-digital converter is chosen relative to the intermediate frequency such that a known interference signal does not alias into the wanted frequency band, allowing it to be removed at baseband.

    Abstract translation: 射频接收机电路，例如用于接收数字地面电视广播信号。 这样的信号包括有用频带中的有用信号，并且还可以包括接近所需频带的干扰信号。 接收机电路接收第一中频信号，并通过在模拟数字转换器中进行子采样来实现下变频。 模拟数字转换器的采样率相对于中间频率被选择，使得已知的干扰信号不会混入所需的频带，从而允许其在基带处被去除。

    PROCESSING METHOD FOR A BROADBAND DIGITAL RADIO RECEIVER SIGNAL AND CORRESPONDING RADIO RECEPTION ARCHITECTURE
    80.
    发明申请
    PROCESSING METHOD FOR A BROADBAND DIGITAL RADIO RECEIVER SIGNAL AND CORRESPONDING RADIO RECEPTION ARCHITECTURE 审中-公开
    宽带数字无线电接收机信号处理方法及相关无线接收架构

    公开(公告)号：WO00045521A1

    公开(公告)日：2000-08-03

    申请号：PCT/FR2000/000152

    申请日：2000-01-25

    IPC: H04B1/00 ,  H04B1/28 ,  H04B1/40 ,  H04B1/16

    CPC classification number: H04B1/28 ,  H04B1/00 ,  H04B1/40

    Abstract: The invention concerns a method for processing radio signals of a plurality of radio communication standards occupying a broadband frequency. Said method comprises: a step which consists in broadband analysis to acquire information on the signals contained in said frequency broadband and selecting an appropriate narrowband processing to demodulate said radio signals; and a step which consists in processing in narrowband said radio signals contained in said frequency broadband to demodulate them.

    Abstract translation: 本发明涉及一种用于处理占用宽带频率的多个无线电通信标准的无线电信号的方法。 所述方法包括：在宽带分析中获取包含在所述频宽中的信号的信息并选择适当的窄带处理以解调所述无线电信号的步骤; 以及包括在窄带处理包含在所述频宽中的无线电信号以解调它们的步骤。

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