Radio communication system
    1.
    发明授权
    Radio communication system 失效
    无线通信系统

    公开(公告)号:US07496384B2

    公开(公告)日:2009-02-24

    申请号:US11288171

    申请日:2005-11-29

    IPC分类号: H04M1/00

    摘要: There is disclosed a radio communication system in which a constitution of a base station and further a control station can be simplified. A radio communication system according to the present invention converts a received signal received by a plurality of antenna elements in a base station to a signal of different frequency band, and then conflates the converted signal in order to generate sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then the optical signal is transmitted to a control station via an optical fiber. Or the control station performs weighting to phase of the transmitted signal transmitted from a plurality of antennas of a base station, and then performs frequency conversion to different frequency band, and then conflates the converted signal in order to generate the sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then an optical signal is transmitted to the base station side via the optical fiber. The control station and the base station divides the received sub-carrier wave multiplex signal by each frequency band, and then the frequency of the divided signals are converted to the same frequency band in order to generate the transmitted/received signal of each antenna element. By such a constitution, it is possible to reduce constituent of the optical transmission components to the minimum and to simplify the constitution of the base station. Furthermore, it is possible to maintain the relative phase difference and the relative intensity of the transmitted/received signal of each antenna element. Because of this, it is possible to estimate an arrival direction of the received signal and to control radiation beam pattern of the transmitted signal.

    摘要翻译: 公开了一种无线电通信系统,其中可以简化基站的结构和控制站的结构。 根据本发明的无线电通信系统将由基站中的多个天线元件接收的接收信号转换为不同频带的信号,然后混合转换的信号以产生副载波复用信号。 信号被转换为光信号,然后光信号通过光纤传输到控制站。 或者控制站对从基站的多个天线发送的发送信号的相位进行加权,然后对不同的频带进行频率转换,然后混合转换的信号,以产生副载波复用信号 。 信号被转换为光信号,然后经由光纤将光信号发送到基站侧。 控制站和基站将接收到的副载波复用信号除以每个频带,然后将分频信号的频率转换为相同的频带,以便产生每个天线单元的发送/接收信号。 通过这样的结构,能够将光传输部件的成分最小化,并且简化基站的结构。 此外,可以保持每个天线元件的发送/接收信号的相对相位差和相对强度。 因此,可以估计接收信号的到达方向并控制发送信号的辐射束图案。

    Radio communication system
    2.
    发明授权

    公开(公告)号:US07043271B1

    公开(公告)日:2006-05-09

    申请号:US09660467

    申请日:2000-09-12

    IPC分类号: H04M1/00

    摘要: There is disclosed a radio communication system in which a constitution of a base station and further a control station can be simplified. A radio communication system according to the present invention converts a received signal received by a plurality of antenna elements in a base station to a signal of different frequency band, and then conflates the converted signal in order to generate sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then the optical signal is transmitted to a control station via an optical fiber. Or the control station performs weighting to phase of the transmitted signal transmitted from a plurality of antennas of a base station, and then performs frequency conversion to different frequency band, and then conflates the converted signal in order to generate the sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then an optical signal is transmitted to the base station side via the optical fiber. The control station and the base station divides the received sub-carrier wave multiplex signal by each frequency band, and then the frequency of the divided signals are converted to the same frequency band in order to generate the transmitted/received signal of each antenna element. By such a constitution, it is possible to reduce constituent of the optical transmission components to the minimum and to simplify the constitution of the base station. Furthermore, it is possible to maintain the relative phase difference and the relative intensity of the transmitted/received signal of each antenna element. Because of this, it is possible to estimate an arrival direction of the received signal and to control radiation beam pattern of the transmitted signal.

    Radio communication system
    3.
    发明申请
    Radio communication system 失效
    无线通信系统

    公开(公告)号:US20060079290A1

    公开(公告)日:2006-04-13

    申请号:US11288171

    申请日:2005-11-29

    IPC分类号: H04M1/00

    摘要: There is disclosed a radio communication system in which a constitution of a base station and further a control station can be simplified. A radio communication system according to the present invention converts a received signal received by a plurality of antenna elements in a base station to a signal of different frequency band, and then conflates the converted signal in order to generate sub-carrier wavemultiplex signal. The signal is converted to an optical signal, and then the optical signal is transmitted to a control station via an optical fiber. Or the control station performs weighting to phase of the transmitted signal transmitted from a plurality of antennas of a base station, and then performs frequency conversion to different frequency band, and then conflates the converted signal in order to generate the sub-carrier wave multiplex signal. The signal is converted to an optical signal, and then an optical signal is transmitted to the base station side via the optical fiber. The control station and the base station divides the received sub-carrier wave multiplex signal by each frequency band, and then the frequency of the divided signals are converted to the same frequency band in order to generate the transmitted/received signal of each antenna element. By such a constitution, it is possible to reduce constituent of the optical transmission components to the minimum and to simplify the constitution of the base station. Furthermore, it is possible to maintain the relative phase difference and the relative intensity of the transmitted/received signal of each antenna element. Because of this, it is possible to estimate an arrival direction of the received signal and to control radiation beam pattern of the transmitted signal.

    摘要翻译: 公开了一种无线电通信系统,其中可以简化基站的结构和控制站的结构。 根据本发明的无线电通信系统将由基站中的多个天线元件接收的接收信号转换为不同频带的信号,然后混合转换的信号以产生副载波复用信号。 信号被转换为光信号,然后光信号通过光纤传输到控制站。 或者控制站对从基站的多个天线发送的发送信号的相位进行加权,然后对不同的频带进行频率转换,然后混合转换的信号,以产生副载波复用信号 。 信号被转换为光信号,然后经由光纤将光信号发送到基站侧。 控制站和基站将接收到的副载波复用信号除以每个频带,然后将分频信号的频率转换为相同的频带,以便产生每个天线单元的发送/接收信号。 通过这样的结构,能够将光传输部件的成分最小化,并且简化基站的结构。 此外,可以保持每个天线元件的发送/接收信号的相对相位差和相对强度。 因此,可以估计接收信号的到达方向并控制发送信号的辐射束图案。

    Signal transmission device
    4.
    发明授权
    Signal transmission device 有权
    信号传输装置

    公开(公告)号:US08705637B2

    公开(公告)日:2014-04-22

    申请号:US13805456

    申请日:2012-02-13

    IPC分类号: H04B3/00

    摘要: A signal transmission device including: a differential signal transmission unit having two output terminals for outputting a differential signal to a paired signal lines including first and second signal lines; a single-ended signal transmission unit having two output terminals for outputting independent two-channel single-ended signals to the paired signal lines; and a filter unit having first and second common mode filters. One terminal of the differential signal transmission unit and one terminal of the single-ended signal transmission unit are connected to the first signal line via one inductor of the first common mode filter of the filter unit. The other one terminal of the differential signal transmission unit and the other one terminal of the single-ended signal transmission unit are connected to the second signal line via one inductor of the second common mode filter of the filter unit.

    摘要翻译: 一种信号传输装置,包括:差分信号传输单元,具有两个输出端,用于将差分信号输出到包括第一和第二信号线的成对信号线; 一个单端信号传输单元,具有两个输出端,用于向成对的信号线输出独立的双通道单端信号; 以及具有第一和第二共模滤波器的滤波器单元。 差分信号传输单元的一个端子和单端信号传输单元的一个端子通过滤波器单元的第一共模滤波器的一个电感器连接到第一信号线。 差分信号传输单元的另一个端子和单端信号传输单元的另一个端子通过滤波器单元的第二共模滤波器的一个电感器连接到第二信号线。

    High-frequency switch module
    5.
    发明授权
    High-frequency switch module 有权
    高频开关模块

    公开(公告)号:US08699966B2

    公开(公告)日:2014-04-15

    申请号:US13410476

    申请日:2012-03-02

    IPC分类号: H04B1/44

    CPC分类号: H04B1/0057

    摘要: A high-frequency switch module includes a first switching element and a second switching element. A common terminal of the first switching element is connected to an antenna. A common input terminal of the second switching element is connected to a multi-band power amplifier. A second individual output terminal of the second switching element is connected to a fourth individual terminal of the first switching element via a first low-pass filter, and is connected to a third individual terminal of the first switching element via a series circuit including a second low-pass filter and a high-pass filter. A first individual output terminal of the second switching element is connected to a first individual terminal of the first switching element via a phase-shift circuit and a first SAW duplexer, and is connected to a second individual terminal of the first switching element via the phase-shift circuit and a second SAW duplexer.

    摘要翻译: 高频开关模块包括第一开关元件和第二开关元件。 第一开关元件的公共端子连接到天线。 第二开关元件的公共输入端子连接到多频带功率放大器。 第二开关元件的第二单独输出端子经由第一低通滤波器连接到第一开关元件的第四单独端子,并且经由串联电路连接到第一开关元件的第三单独端子,该串联电路包括第二开关元件 低通滤波器和高通滤波器。 第二开关元件的第一单独输出端经由移相电路和第一SAW双工器连接到第一开关元件的第一单独端子,并且经由相位连接到第一开关元件的第二单独端子 换档电路和第二SAW双工器。

    Removable memory device, phase synchronizing method, phase synchronizing program, medium recording the same, and host terminal
    6.
    发明授权
    Removable memory device, phase synchronizing method, phase synchronizing program, medium recording the same, and host terminal 有权
    可移动存储设备,相位同步方法,相位同步程序,介质记录和主机终端

    公开(公告)号:US07886085B2

    公开(公告)日:2011-02-08

    申请号:US12295051

    申请日:2007-02-20

    IPC分类号: G06F13/00 G06F3/00

    摘要: An object of the present invention is to provide a technique to improve the data transmission efficiency which allows correct reception of the data at the same time. A removable memory device that transmits/receives data to and from a host terminal, which includes: a clock reception section that receives a transmission/reception clock, which is used for transmitting/receiving data between the host terminal and the removable memory device, from the host terminal; a phase synchronization pattern generation section that generates a phase synchronization pattern, which is for adjusting a phase of internal reception clock which the host terminal incorporates for receiving data from the removable memory device, based on the transmission/reception clock; and a transmission section that transmits the generated phase synchronization pattern to the host terminal, and in which the phase synchronization pattern includes a first level signal which lasts for at least two cycles, and a second level signal which follows the first level signal and lasts for one cycle, is provided.

    摘要翻译: 本发明的目的是提供一种提高数据传输效率的技术,其允许同时正确地接收数据。 一种向主机终端发送/接收数据的可移动存储装置,包括:接收用于在主机终端和可移动存储装置之间发送/接收数据的发送/接收时钟的时钟接收部分, 主机终端; 相位同步模式生成部,其基于所述发送接收时钟生成相位同步模式,所述相位同步模式用于调整所述主机终端结合的用于从所述可移动存储装置接收数据的内部接收时钟的相位; 以及发送部,其将所生成的相位同步模式发送到所述主机终端,并且所述相位同步模式包括持续至少两个周期的第一电平信号,以及在所述第一电平信号之后持续的第二电平信号, 提供一个循环。

    INTERFACE CIRCUIT THAT CAN SWITCH BETWEEN SINGLE-ENDED TRANSMISSION AND DIFFERENTIAL TRANSMISSION
    7.
    发明申请
    INTERFACE CIRCUIT THAT CAN SWITCH BETWEEN SINGLE-ENDED TRANSMISSION AND DIFFERENTIAL TRANSMISSION 有权
    可以在单端传输和差分传输之间切换的接口电路

    公开(公告)号:US20100289534A1

    公开(公告)日:2010-11-18

    申请号:US12847161

    申请日:2010-07-30

    IPC分类号: H03B1/00

    CPC分类号: H04L25/028 H04L25/0272

    摘要: An object of the present invention is to realize reduction in an area of an output stage driver in an interface circuit that switches between two transmission systems. The interface circuit has two driver circuits and a drive control circuit that can switch between two driving systems that are a voltage driving system and a current driving system. The two driver circuits are connected to a power supply potential via the drive control circuit. Two input signals and inverted logic signals of the input signals are inputted via a selection circuit. According to a control signal inputted into the drive control circuit, the interface circuit switches between the voltage-driving type single-ended transmission system and current driving type differential transmission system.

    摘要翻译: 本发明的目的是实现在两个传输系统之间切换的接口电路中的输出级驱动器的面积的减小。 接口电路具有两个驱动电路和驱动控制电路,该电路可以在作为电压驱动系统和电流驱动系统的两个驱动系统之间切换。 两个驱动电路通过驱动控制电路连接到电源电位。 通过选择电路输入输入信号的两个输入信号和反相逻辑信号。 根据输入到驱动控制电路的控制信号,接口电路在电压驱动型单端传输系统和电流驱动型差动传输系统之间切换。

    Surface acoustic wave device
    9.
    发明申请
    Surface acoustic wave device 有权
    表面声波装置

    公开(公告)号:US20060170521A1

    公开(公告)日:2006-08-03

    申请号:US10548127

    申请日:2005-02-16

    申请人: Osamu Shibata

    发明人: Osamu Shibata

    IPC分类号: H03H9/64

    摘要: A surface acoustic wave device includes a piezoelectric substrate that does not restore the pyroelectric effect, and a method for manufacturing the same. A surface acoustic wave element housed in a package includes a piezoelectric substrate having a specific resistance in the range of about 1.0×107 Ω·cm to about 1.0×1013 Ω·cm. Pads are electrically connected to an external electrode with a solder. The space between the package and a cap of the package is sealed with a sealing material. At least one of the solder and the sealing material has a melting point of about 300° C. or less.

    摘要翻译: 表面声波装置包括不恢复热电效应的压电基板及其制造方法。 容纳在封装体中的表面声波元件包括压电基片,其电阻率在约1.0×10 -7Ω至约1.0×10 3Ω·cm 。 焊盘通过焊料与外部电极电连接。 封装和包装盖之间的空间用密封材料密封。 焊料和密封材料中的至少一种具有约300℃以下的熔点。

    Propylene block copolymer and propylene resin composition
    10.
    发明授权
    Propylene block copolymer and propylene resin composition 有权
    丙烯嵌段共聚物和丙烯树脂组合物

    公开(公告)号:US06825280B1

    公开(公告)日:2004-11-30

    申请号:US09485189

    申请日:2000-02-07

    IPC分类号: C08L2310

    摘要: Disclosed are a propylene polymer composition possessing excellent balance among rigidity and low warpage, resistance to deterioration caused by thermal oxidation during processing, weathering resistance, antistatic properties, and low bleeding properties, and a propylene resin composition which can easily produce molded products having excellent balance between rigidity and impact resistance (particularly low-temperature impact resistance) or heat resistance. The propylene polymer composition and the propylene resin composition comprise a propylene block copolymer consisting essentially of the following blocks (a) and (b) and having a melt flow rate of 0.1 to 200 g/10 min: block (a): a polymer block of a homopolymer of propylene or a random copolymer of propylene with a comonomer selected from the group consisting of ethylene and C4-C20 &agr;-olefins, the content of the comonomer being not more than 10% by mole; and block (b): a polymer block of a random copolymer of propylene with at least one comonomer selected from the group consisting of ethylene and C4-C20 &agr;-olefins, the content of the comonomer being 10 to 80% by mole, the average chain length of the comonomer block and the gross average chain length of the comonomer having a relationship represented by formula (I) nb≦n+1.5  (I) wherein nb represents the average chain length of the comonomer block; and n represents the gross average chain length of the comonomer.

    摘要翻译: 公开了在刚性和低翘曲之间具有优异的平衡性,耐加工中的热氧化,耐候性,抗静电性和低渗透性的耐劣化性的丙烯聚合物组合物,以及可以容易地制备具有优异平衡性的模塑产品的丙烯树脂组合物 刚性和抗冲击性(特别是低温耐冲击性)或耐热性。 丙烯聚合物组合物和丙烯树脂组合物包含基本上由以下嵌段(a)和(b)组成并且熔体流动速率为0.1至200g / 10min的丙烯嵌段共聚物:嵌段(a):聚合物嵌段 的丙烯均聚物或丙烯与选自乙烯和C 4 -C 20α-烯烃的共聚单体的无规共聚物,共聚单体的含量不超过10摩尔% 和嵌段(b):丙烯与至少一种选自乙烯和C 4 -C 20α-烯烃的共聚单体的无规共聚物的聚合物嵌段,共聚单体的含量为10〜80摩尔%,平均链 共聚单体嵌段的长度和由式(I)表示的关系的共聚单体的总平均链长,其中nb表示共聚单体嵌段的平均链长; n表示共聚单体的总平均链长。