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    • 1. 发明申请
    • Antenna Control Device, Reception Device, And Antenna Control Method
    • 天线控制装置,接收装置和天线控制方法
    • US20110001667A1
    • 2011-01-06
    • US12865569
    • 2009-01-22
    • Kohji MatsumuraSumio Hanafusa
    • Kohji MatsumuraSumio Hanafusa
    • H01Q3/44H01Q23/00
    • H01Q19/32H01Q3/44H01Q3/446H04B1/18
    • A reception device includes: a variable-directivity antenna; an antenna amplifier which amplifies a signal inputted from the variable-directivity antenna; a regulator which supplies DC power to the antenna amplifier; a full wave rectification unit which supplies the DC power to the regulator; a signal line; a DC power source; and a switching unit which switches connection with the DC power source. DC voltage is applied to the DC power source by the signal line so as to control the directivity of the variable-directivity antenna. Moreover, the DC power is supplied to the regulator via the full wave rectification unit. When the connection of the switching unit is switched, the DC voltage supplied to the variable-directivity antenna is reversed between positive and negative voltage but the DC voltage supplied to the regulator is not reversed.
    • 接收装置包括:可变方向性天线; 放大从可变方向性天线输入的信号的天线放大器; 向天线放大器提供直流电的调节器; 全波整流单元,向稳压器提供直流电; 信号线 直流电源; 以及切换与直流电源的连接的开关单元。 通过信号线将直流电压施加到直流电源,以控制可变方向性天线的方向性。 此外,直流电源通过全波整流单元提供给调节器。 当切换单元的连接切换时,提供给可变方向性天线的直流电压在正电压和负电压之间相反,但是提供给调节器的直流电压不反转。
    • 5. 发明授权
    • Velocity-modulation transistor with quantum well wire layer
    • 具有量子阱线的速度调制晶体管
    • US5225895A
    • 1993-07-06
    • US626309
    • 1990-12-12
    • Minoru SawadaKohji MatsumuraDaijiro Inoue
    • Minoru SawadaKohji MatsumuraDaijiro Inoue
    • H01L29/772H01L29/775
    • B82Y10/00H01L29/772H01L29/7727H01L29/775
    • An electron supply layer, a quantum well layer, a first barrier layer, a quantum well layer and a second barrier layer are formed in that order on a GaAs substrate to obtain a device, and source, drain and gate electrodes are provided on the surface of this device. In the above described quantum well layers, the lowest sub-band energies of respective carriers largely differ from each other. Accordingly, one of the above quantum well layers serves as a high-speed channel, and the other serves as a low-speed channel. The change in current value with the application of a gate bias depends only on the speed at which electrons move from the high-speed channel to the low-speed channel. Consequently, a velocity-modulation transistor can be constructed which operates at substantially high speed.
    • 在GaAs衬底上依次形成电子供给层,量子阱层,第一势垒层,量子阱层和第二阻挡层,以获得器件,并且在表面上设置源极,漏极和栅电极 的这个设备。 在上述量子阱层中,各个载流子的最低子带能量彼此大不相同。 因此,上述量子阱层之一用作高速通道,另一个用作低速通道。 通过施加栅极偏置的电流值的变化仅取决于电子从高速通道移动到低速通道的速度。 因此,可以构造速度调制晶体管,其以基本上高的速度运行。