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    • 3. 发明申请
    • REDUCTION METHOD AND APPARATUS
    • 减少方法和装置
    • WO2010041202A1
    • 2010-04-15
    • PCT/IB2009/054385
    • 2009-10-07
    • NXP B.V.RAMBEAU, VincentMERCIER, FredericLOCOCO, Luca
    • RAMBEAU, VincentMERCIER, FredericLOCOCO, Luca
    • H04B1/18H04B17/00H04B1/10
    • H04B1/18H04B17/21
    • The present invention relates to a tilt correction method and a corresponding apparatus for correcting tilt of RF signals in a wanted channel having a predetermined frequency range, in a signal path of a communication equipment, wherein the RF signals are down-converted to an intermediate frequency of an IF domain. The method comprises the steps of: providing a predetermined RF signal having a particular frequency to the signal path, detecting an output signal in the intermediate frequency (IF) domain and outputting a detection result, repeating the providing step and the detecting step for plural RF signals of different frequencies within the channel frequency range, determining the tilt of the RF signals in the frequency range by comparing the detection results, and correcting the tilt to obtain a minimized tilt of the wanted channel depending upon the determined tilt. The present invention further refers to a computer program including program code means to carry out the method, and to an integrated circuit wherein the apparatus is implemented.
    • 本发明涉及一种用于在通信设备的信号路径中校正具有预定频率范围的有用信道中的RF信号的倾斜的倾斜校正方法和相应装置,其中RF信号被下变频到中频 的IF域。 该方法包括以下步骤:向信号路径提供具有特定频率的预定RF信号,检测中频(IF)域中的输出信号并输出​​检测结果,重复提供步骤和用于多个RF的检测步骤 在频道范围内的不同频率的信号,通过比较检测结果来确定频率范围内的RF信号的倾斜,并且根据确定的倾斜来校正倾斜以获得所需信道的最小化倾斜。 本发明还涉及包括用于执行该方法的程序代码装置的计算机程序,以及其中实现该装置的集成电路。
    • 4. 发明申请
    • RADIO FREQUENCY FILTER
    • 无线频率滤波器
    • WO2008107807A1
    • 2008-09-12
    • PCT/IB2008/050540
    • 2008-02-14
    • NXP B.V.MERCIER, FredericLOCOCO, LucaRAMBEAU, VincentPARIS, Jean-Marc
    • MERCIER, FredericLOCOCO, LucaRAMBEAU, VincentPARIS, Jean-Marc
    • H03H7/01H03J3/20
    • H03H7/0153H03H7/1775H03H7/38H03H2210/012H03H2210/025H03H2210/036H03J3/20H03J2200/10
    • A radio frequency filter (1) comprises an input impedance adaption section (2) and a tank capacitor section (3). Thereby, the capacity of the input impedance adaption section (2) does not comprise a fixed capacitor, it only comprises switchable capacitors. Further, the tank capacitor section (3) does not comprise a fixed capacitor as well it only comprises switchable capacitors. The capacity of the input impedance adaption section (2) can be tuned independent of the tank capacity, section capacity by means of switchable capacitors. Hence, bandwidth and frequency of the radio frequency filter can be modified independent of each other. The imput impendance adaption section (2) is connected in series between the input and output of the filter (1). The tank capacitor section(3) is shunt connected between the input-output series path of the filter (1) and ground. Optionally a gain/attenuation adaption section (4) is in series connected with the imput impedance adaption section (2) in the input-output path of the filter (1)
    • 射频滤波器(1)包括输入阻抗适配部分(2)和电容器部分(3)。 因此,输入阻抗适配部分(2)的容量不包括固定电容器,它只包括可开关电容器。 此外,储能电容器部分(3)也不包括固定电容器,它只包括可切换电容器。 输入阻抗适配部分(2)的容量可以通过可切换电容器独立于容器容量,部分容量来调节。 因此,射频滤波器的带宽和频率可以彼此独立地修改。 输入阻抗适应部分(2)串联连接在滤波器(1)的输入和输出之间。 滤波电容器部分(3)在滤波器(1)的输入 - 输出串联路径和地之间分流连接。 可选地,增益/衰减适配部分(4)与滤波器(1)的输入 - 输出路径中的输入阻抗适配部分(2)串联连接,