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    • 1. 发明授权
    • High frequency current inducing apparatus
    • 高频电流感应装置
    • US4547731A
    • 1985-10-15
    • US474323
    • 1983-03-11
    • Tatsuo TerataniMasao Kodera
    • Tatsuo TerataniMasao Kodera
    • G01R31/00G01R31/16G01R27/04
    • G01R31/16G01R31/00
    • A high frequency current inducing apparatus for inducing high frequency current in a wiring harness of an instrument to be examined without the necessity of detaching the wiring harness from the instrument. A high frequency current inducing chamber is connected to a high frequency oscillator for inducing the high frequency current in the wiring harness of the instrument to be inspected, and a terminator is connected to the high frequency inducing chamber. The chamber includes an outer conductor and an inner conductor fixed at a predetermined position inside the outer conductor. The outer conductor has two inserting holes for insertion of the wiring harness along the axis of the chamber between the two conductors. The outer conductor can be separated along a plane including the two inserting holes. Once separated, the wiring harness of the instrument to be inspected can be inserted along the axis of the chamber without detaching the wiring harness from the instrument.
    • 一种用于在被检测仪器的线束中感应高频电流而不需要将线束从仪器分离的高频电流感应装置。 高频电流诱导室连接到高频振荡器,用于感测要检查的器械的线束中的高频电流,并且终端器连接到高频诱导室。 该室包括外导体和固定在外导体内的预定位置的内导体。 外导体具有两个插入孔,用于沿两个导体之间的腔室轴线插入线束。 外导体可以沿着包括两个插入孔的平面分离。 一旦分离,要检查的仪器的线束可以沿着腔室的轴线插入,而不会将线束从仪器上拆下。
    • 2. 发明授权
    • Variable reactance circuit for microwave or millimeter wave band and
variable matching circuit using variable reactance circuit
    • 用于微波或毫米波段的可变电抗电路和使用可变电抗电路的可变匹配电路
    • US5343172A
    • 1994-08-30
    • US997305
    • 1992-12-23
    • Junsi UtsuSeishin MikamiMasao Kodera
    • Junsi UtsuSeishin MikamiMasao Kodera
    • H03F3/60H03H11/28H03H11/30H03H11/48H03H7/38H03F3/16
    • H03F1/56H03H11/30
    • Series reactance elements constituted by capacitors are connected to an input side corresponding to the gate electrode of an amplifying FET and an output side corresponding to the drain electrode of the amplifying FET, respectively. Parallel variable reactance circuits are connected to the input and output sides, respectively. Each variable reactance circuit includes a FET, where the source electrodes of the FET are connected to the input and output sides through MIM capacitors, respectively. Additionally, drain electrodes of the FETs are grounded through inductive loads which are constituted by spiral inductors, respectively. The source electrodes of the FETs constituting the variable reactance circuits are grounded through choke coils, respectively. The drain electrodes of the FETs receive control bias voltages through the choke coils, respectively. In this case, each of the resistive components of the spiral inductors is set to have a value which can cancel the negative resistive component of the corresponding FET.
    • 由电容器构成的串联电抗元件分别连接到与放大FET的栅电极对应的输入侧和与放大FET的漏电极对应的输出侧。 并联可变电抗电路分别连接到输入和输出侧。 每个可变电抗电路包括FET,其中FET的源电极分别通过MIM电容器连接到输入和输出侧。 此外,FET的漏极分别通过由螺旋电感器构成的感性负载接地。 构成可变电抗电路的FET的源电极分别通过扼流线圈接地。 FET的漏电极分别通过扼流线圈接收控制偏置电压。 在这种情况下,螺旋电感器的电阻分量中的每一个被设定为具有能够抵消对应的FET的负电阻分量的值。
    • 3. 发明授权
    • Ultrasonic transducer
    • 超声波换能器
    • US4636997A
    • 1987-01-13
    • US697006
    • 1985-01-31
    • Keiichiro ToyamaMasao KoderaKunihiko Sasaki
    • Keiichiro ToyamaMasao KoderaKunihiko Sasaki
    • H04R1/34B60Q1/52G01S7/521G01S15/93G10K11/28H04R1/20
    • G01S15/931B60Q9/008G01S7/521G10K11/28Y10S367/909
    • An ultrasonic transducer comprises a cylindrical housing embedded within a rear bumper of a vehicle and opening backward, a reflecting plate having a parabolic reflecting surface provided within the cylindrical housing along a closed end thereof and facing an open end thereof, and an ultrasonic vibrator provided in an upper wall of the housing at the focus of the reflecting plate for emitting and receiving ultrasonic waves. The ultrasonic transducer transmits ultrasonic waves behind the vehicle and receives ultrasonic waves reflected from an obstacle. The ultrasonic transducer further comprises a projecting member provided on the inner wall of the housing along the open end thereof for dispersing and cancelling the ultrasonic waves entering the housing at angles with respect to the axis of the housing. The projecting member has a smoothly curving cross section having a radius of substantially one fourth to five times the wavelength of the ultrasonic waves emitted by the ultrasonic vibrator.
    • 一种超声波换能器包括嵌入在车辆的后保险杠内并向后打开的圆柱形壳体,反射板具有抛物面反射表面,该抛物面反射表面沿其封闭端设置在圆柱形壳体内并面向其开口端;以及超声波振动器, 在反射板的焦点处的壳体的上壁用于发射和接收超声波。 超声波换能器在车辆后方传递超声波,接收从障碍物反射的超声波。 超声波换能器还包括沿着开口端设置在壳体的内壁上的突出构件,用于以相对于壳体的轴线成角度分散和抵消进入壳体的超声波。 突出构件具有平滑弯曲的横截面,该横截面的半径大致是由超声波振动器发射的超声波的波长的四分之一至五倍。
    • 5. 发明授权
    • Circuit for stabilizing RF amplifier
    • 用于稳定RF放大器的电路
    • US5406224A
    • 1995-04-11
    • US111120
    • 1993-08-24
    • Seishin MikamiMasao KoderaJunshi Utsu
    • Seishin MikamiMasao KoderaJunshi Utsu
    • H03F1/08H03F3/193H03F3/60H03F3/16H03F3/191
    • H03F1/56H03F1/086H03F3/1935
    • A high-frequency amplifier has a semiconductor element for amplifying a high-frequency signal, an input matching circuit connected to an input side of the semiconductor element, and an output matching circuit connected to an output side of the semiconductor element. A stabilizing circuit is connected to at least one of a signal input path between the input matching circuit and the semiconductor element, and a signal output path between the semiconductor element and the output matching circuit. The stabilizing circuit includes a first element having a first end which is short-circuited with respect to a high frequency, a parallel resonant circuit connected in series with a second end of the first element and performing parallel resonance at an operating frequency of the high-frequency amplifier, and a second element connected to a side of the parallel resonant circuit which is opposite to the first element. Values of the first element and the second element are chosen so that an admittance of the high-frequency amplifier which occurs at a frequency of possible oscillation of the high-frequency amplifier will be within a constant-conductance circle in a Smith chart which denotes a stable condition of the high-frequency amplifier.
    • 高频放大器具有用于放大高频信号的半导体元件,连接到半导体元件的输入侧的输入匹配电路和连接到半导体元件的输出侧的输出匹配电路。 稳定电路连接到输入匹配电路和半导体元件之间的信号输入路径中的至少一个以及半导体元件和输出匹配电路之间的信号输出路径。 稳定电路包括第一元件,第一元件具有相对于高频短路的第一端,与第一元件的第二端串联连接的并联谐振电路,并以高频率的工作频率执行并联谐振, 频率放大器和连接到与第一元件相对的并联谐振电路的一侧的第二元件。 选择第一元件和第二元件的值,使得在高频放大器的可能振荡的频率处出现的高频放大器的导纳将在史密斯圆图中位于恒定电导圈内,该史密斯圆图表示 高频放大器的稳定状态。
    • 7. 发明授权
    • Planar array antenna
    • 平面阵列天线
    • US4893129A
    • 1990-01-09
    • US284730
    • 1988-12-15
    • Masao KoderaSeishin Mikami
    • Masao KoderaSeishin Mikami
    • G01S7/02H01Q13/26H01Q21/00H01Q21/06H01Q21/08H01Q21/22
    • H01Q21/065H01Q21/0075
    • In a planar array antenna in which radio frequency power fed by a feeder line is radiated from a plurality of radiation elements disposed in a planar state on one surface of a dielectric substrate on the other surface of which the feeder line is disposed, the feeder line has a first feeder part and a second feeder part. The first feeder part is spaced apart by a predetermined distance from the marginal contour of one of the radiation elements in the planar direction of the dielectric substrate, while the second feeder part is located within the width of the marginal contour of another one of the radiation elements and directly beneath the latter radiation element, and the second feeder part is divided into two parts with respective ends thereof confronting each other, the power coupling coefficient between the second feeder part and said another one radiation element is selected to be larger than that between the first feeder part and said one of the radiation elements, thereby making the planar array antenna operate with high radiation efficiency and small side lobes.
    • 在平面阵列天线中,馈电线路所馈送的射频功率是从设置在平面状态的多个辐射元件辐射在介质基片的一个表面上的另一个表面上放置馈电线的馈电线 具有第一馈送部分和第二馈送部分。 第一馈电部分在电介质基板的平面方向上与辐射元件之一的边缘轮廓隔开预定的距离,而第二馈电部分位于另一个辐射的边缘轮廓的宽度内 并且第二馈送部分被分成两部分,其相应的端部彼此面对,第二馈送部分和所述另一个辐射元件之间的功率耦合系数被选择为大于第二馈送部分之间的功率耦合系数 第一馈电部分和所述一个辐射元件,从而使得平面阵列天线以高辐射效率和小的旁瓣工作。
    • 9. 发明授权
    • Obstacle detecting device for vehicles
    • 车辆障碍物检测装置
    • US4524356A
    • 1985-06-18
    • US401023
    • 1982-07-22
    • Masao KoderaShigeyuki AkitaYasuhisa Yoshino
    • Masao KoderaShigeyuki AkitaYasuhisa Yoshino
    • B60R21/00B60W30/00G01S7/56G01S15/93G01S17/93G08G1/00
    • G01S15/931Y10S367/909
    • An obstacle monitoring device for the rear of a vehicle comprising a plurality of ultrasonic obstacle detectors which are operated sequentially at a predetermined time interval, and an electronic monitor for supplying the obstacle detectors with their operational timing sequences at the predetermined time intervals and for determining distance information for each detector based on the changing pulse width of electric currents for each of the obstacle detectors within a particular time interval, which pulse widths correspond to the distance between an obstacle and the rear of the vehicle. A single transmission line connects the obstacle detectors with the monitor so that the number of wires in a wire-harness is reduced between the obstacle detectors (outside the vehicle) and the monitor (inside the vehicle).
    • 一种用于车辆后部的障碍物监视装置,包括以预定时间间隔顺序操作的多个超声波障碍物检测器,以及电子监视器,用于以预定时间间隔向障碍物检测器提供其操作定时序列,并用于确定距离 基于在特定时间间隔内针对每个障碍物检测器的电流的脉冲宽度变化的每个检测器的信息,哪个脉冲宽度对应于障碍物与车辆后部之间的距离。 单个传输线将障碍物检测器与监视器连接,使得在障碍物检测器(车辆外部)和监视器(车辆内部)之间线束中的电线数量减少。