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18 records (took 0.026 seconds)

    2.
    发明专利
    未知

    公开(公告)号：DE602005015235D1

    公开(公告)日：2009-08-13

    申请号：DE602005015235

    申请日：2005-10-06

    Applicant: PANASONIC CORP

    Inventor： HOSOKAWA YOSHIFUMI ,  MATSUO MICHIAKI ,  SAITO NORIAKI

    IPC: H03D7/12 ,  H04B1/40

    Abstract: The base of bipolar transistor 1 connected to RF terminal 13, IF terminal 9, and LO terminal 6 is connected to power source 16 through power supply switch 11. When power supply switch 11 is turned on and an RF signal and an LO signal are input to bipolar transistor 1, a mixed signal of both signals is output as an IF signal. When power supply switch 11 is turned off, the bipolar transistor 1 operates as two diodes connected between base terminal 4 and emitter terminal 2 and between base terminal 4 and collector terminal 3. When the IF signal and the LO signal are input, the input signals are mixed with each other by the diodes and the RF signal is output. Accordingly, one frequency conversion has a plus conversion gain and when bidirectional frequency conversion is performed by the use of one frequency converter, an external circuit such as a signal path switching switch is not necessary.

    RADIO COMMUNICATION DEVICE
    4.
    发明公开
    RADIO COMMUNICATION DEVICE 有权
    无线电通信设备

    公开(公告)号：EP1750376A4

    公开(公告)日：2011-10-26

    申请号：EP05748830

    申请日：2005-06-13

    Applicant: PANASONIC CORP

    Inventor： ABE KATSUAKI ,  MATSUO MICHIAKI ,  SAITO NORIAKI ,  SAKAMOTO TAKENORI ,  MATSUOKA AKIHIKO

    IPC: H04B1/38 ,  H01B7/26 ,  H04W88/06

    CPC classification number: H04W88/06 ,  H04B1/0003

    Abstract: There are provided a plurality of systems of reconfigurable radio processing unit (102) whose function and performance can be modified. A control unit (104) collects quality information on the communication link in communication methods received at respective radio processing systems (102a, 102b). According to this, the control unit (104) selects an optimal communication method and transmission mode from a plurality of communication methods and transmission modes (for example, diversity transmission between a plurality of systems, diversity transmission by a single communication method, and MIMO channel multiplex transmission). By modifying configurations of the reconfigurable radio processing unit (102) according to the selected communication method and transmission mode, it is possible to communicate at a desired transmission mode. Thus, it is possible to perform an optimal transmission to the communication link according to the quality condition and other request condition.

    DISTORTION COMPENSATION CIRCUIT
    7.
    发明公开
    DISTORTION COMPENSATION CIRCUIT 审中-公开
    失真补偿电路

    公开(公告)号：EP1763129A4

    公开(公告)日：2009-01-07

    申请号：EP05753517

    申请日：2005-06-27

    Applicant: PANASONIC CORP

    Inventor： SHIMIZU YOSHITO ,  SAITO NORIAKI

    IPC: H03F1/32 ,  H03F3/24 ,  H04B1/04 ,  H04L27/20

    CPC classification number: H04L27/367 ,  H03F1/3282

    Abstract: There is provided a distortion compensation circuit capable of accurately expressing a modulation signal, i.e., realizing a low distortion characteristic of an amplifier while suppressing increase of the compensation data and increase of the circuit size. According to a stationary characteristic compensation circuit (11) for storing an output signal amplitude and an output phase characteristic for control voltage in the stationary state, amplitude information r11(t) which has performed amplitude correction is subjected to amplitude adjustment by a first amplitude information adjustment unit (13), thereby improving the response of the output signal amplitude of the amplifier for the change of control voltage while suppressing increase of the compensation data.

    Direct sampling circuit, and receiver
    9.
    发明专利
    Direct sampling circuit, and receiver 有权
    直接采样电路和接收器

    公开(公告)号：JP2011055151A

    公开(公告)日：2011-03-17

    申请号：JP2009200816

    申请日：2009-08-31

    Applicant: Panasonic Corp ,  パナソニック株式会社

    Inventor： MORISHITA YOHEI ,  SAITO NORIAKI

    IPC: H03H19/00 ,  H04B1/26 ,  H04B1/30

    CPC classification number: H03H15/023 ,  H04B1/0007

    Abstract: PROBLEM TO BE SOLVED: To provide a direct sampling circuit having excellent frequency characteristics and a receiver by the use of a relatively simple structure and simple clocks.
    SOLUTION: In each of discrete-time circuits 102-1 to 102-4, a charging switch 1021 is on/off-controlled by using any of four-phase control signals; a rotate capacitor 1022 shares, via the charging switch 1021, charge stored in an IQ generating circuit 101; a dump switch 1023 is on/off-controlled by use of another one out of the four-phase control signals, the phase of which is different from that of the control signal used to on/off-control the charging switch 1021; and a buffer capacitor 1026 shares, via the dump switch 1023, charge with the rotate capacitor 1022, thereby forming an output value.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：通过使用相对简单的结构和简单的时钟来提供具有优异频率特性的直接采样电路和接收器。 解决方案：在离散时间电路102-1至102-4的每一个中，通过使用四相控制信号中的任何一个来对充电开关1021进行开/关控制; 旋转电容器1022经由充电开关1021共享存储在IQ发生电路101中的电荷; 通过使用四相控制信号中的另一个，相位不同于用于开/关控制充电开关1021的控制信号，转储开关1023被开/关控制。 并且缓冲电容器1026经由转储开关1023共享与旋转电容器1022的充电，从而形成输出值。 版权所有（C）2011，JPO＆INPIT

    Wireless circuit device
    10.
    发明专利
    Wireless circuit device 审中-公开
    无线电路设备

    公开(公告)号：JP2009165112A

    公开(公告)日：2009-07-23

    申请号：JP2008312371

    申请日：2008-12-08

    Applicant: Panasonic Corp ,  パナソニック株式会社

    Inventor： NAKATANI TOSHIBUMI ,  SAITO NORIAKI ,  TSUKAMOTO SATOSHI

    IPC: H04B1/3822 ,  H04B1/40

    CPC classification number: H04B1/525

    Abstract: PROBLEM TO BE SOLVED: To provide a wireless circuit device which can reduce mixed modulation disturbance caused by the leakage of a transmitting signal. SOLUTION: The wireless circuit device includes a transmitting base band circuit (12) for outputting a transmitting signal, a receiving circuits (14, 15) for inputting receiving signals as differential RF signals, an envelope signal generation circuit (24) which generates an envelope signal of a squared envelope signal of the RF transmitting signal transmitted from the base band circuit (12), an envelope signal control circuit (20) which outputs a control signal for controlling an amplitude and a delay time of the envelope signal, and an envelope signal pouring circuit (23) which controls the amplitude and the delay time of the envelope signal corresponding to the control signal outputted by the envelope signal control circuit (20) and injects the controlled envelope signal into the differential RF signal of the receiving circuits (14, 15) at the same phase, respectively. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种能够减少由发送信号的泄漏引起的混合调制干扰的无线电路装置。 解决方案：无线电路装置包括用于输出发送信号的发送基带电路（12），用于输入接收信号作为差分RF信号的接收电路（14,15），包络信号发生电路（24），其包括： 生成从基带电路（12）发送的RF发送信号的平方包络信号的包络信号，输出用于控制包络信号的振幅和延迟时间的控制信号的包络信号控制电路（20） 以及包络信号输出电路（23），其控制与包络信号控制电路（20）输出的控制信号对应的包络信号的振幅和延迟时间，并将受控包络信号注入接收的差分RF信号 电路（14,15）分别在同一相位。 版权所有（C）2009，JPO＆INPIT

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