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    • 1. 发明申请
    • Optical fiber radio transmission system, transmission device, and reception device
    • 光纤无线传输系统,传输设备和接收设备
    • US20060239630A1
    • 2006-10-26
    • US10546618
    • 2004-11-22
    • Kazutoshi HaseHiroaki YamamotoKuniaki Utsumi
    • Kazutoshi HaseHiroaki YamamotoKuniaki Utsumi
    • G02B6/00
    • H04B10/25759H03F3/08
    • An optical fiber radio transmission system is provided which is capable of considerably improving the received dynamic range of radio signals and, in addition, is capable of optically transmitting radio signals while preventing the deterioration of transmission performance and the loss of linearity of an input signal more easily. A received level detection section 111 detects which one of predetermined levels, i.e., Level I, Level II, and Level III, the received level of a radio signal received by an antenna 400 falls under. A signal control section 112 performs an amplification/attenuation process on the radio signal in accordance with the detected level. A control information sending section 113 superimposes control information indicating the detected level on a primary signal obtained after the amplification/attenuation process. This signal is converted to an optical signal and transmitted. An optical to electrical conversion section 211 converts the optical signal received from a transmitting unit to an electrical signal. A control information extraction section 212 extracts the level from the control information, which has been superimposed on the primary signal. A signal control section 213 performs an amplification/attenuation process on the primary signal in accordance with the extracted level.
    • 提供了一种光纤无线电传输系统,其能够显着地改善无线电信号的接收动态范围,并且还能够光学地传输无线电信号,同时防止传输性能的恶化和输入信号的线性度的损失更多 容易。 接收电平检测部分111检测由天线400接收的无线电信号的接收电平的预定电平即电平I,电平II和电平III中的哪一个下降。 信号控制部分112根据检测到的电平对无线电信号进行放大/衰减处理。 控制信息发送部113将表示检测电平的控制信息叠加在放大/衰减处理后获得的主信号上。 该信号被转换成光信号并发送。 光电转换部分211将从发送单元接收的光信号转换为电信号。 控制信息提取部212从叠加在主信号上的控制信息中提取电平。 信号控制部213根据提取的电平对主信号进行放大/衰减处理。
    • 3. 发明申请
    • ANTENNA AND RECEPTION APPARATUS PROVIDED WITH ANTENNA
    • 天线和接收装置提供天线
    • US20110287731A1
    • 2011-11-24
    • US13146328
    • 2010-01-28
    • Kazutoshi Hase
    • Kazutoshi Hase
    • H04B7/00H01Q21/00
    • H01Q21/24H01Q9/16H01Q9/30
    • An antenna is capable of receiving radio waves, including a monopole antenna connected to a first feeding point and formed of a first linear line; and a dipole antenna including plural linear lines connected to a second feeding point. The dipole antenna is composed of a second linear line made of plural linear lines disposed substantially equidistant from the first linear line and substantially parallel to the first linear line; and a third linear line substantially orthogonal to the second linear line. Electric currents are excited through the plural linear line forming the second linear line in directions opposite to each other. The monopole antenna is on substantially the same plane as the dipole antenna.
    • 天线能够接收无线电波,包括连接到第一馈电点并由第一线性线形成的单极天线; 以及包括连接到第二馈电点的多条线性线的偶极天线。 偶极天线由与第一线性线基本上等距离设置并且基本上平行于第一线性线的多条线性线构成的第二直线构成; 以及基本上与第二线性线正交的第三线性线。 通过在彼此相反的方向上形成第二线性线的多条线性线激发电流。 单极天线与偶极天线基本相同。
    • 4. 发明授权
    • Optical transmitter circuit
    • 光发射机电路
    • US07912379B2
    • 2011-03-22
    • US12280076
    • 2007-02-20
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • H04B10/20
    • H04B10/502H04B10/564
    • A peaking current generating section generates a spire-shaped peaking current that is in synchronism with the transitions of the digital signal, at the rising edge and the falling edge. A light emitting element driving section produces a driving current obtained by combining together a signal amplitude current according to the amplitude of the digital signal and the peaking current. Then, the light emitting element driving section drives a light emitting element by using the driving current. A signal analysis section analyzes the digital signal so as to set a control signal based on the pulse width of the digital signal. A clipping section clips the peaking current of the driving current according to the control signal set by the signal analysis section.
    • 峰值电流产生部分在上升沿和下降沿产生与数字信号的转变同步的尖峰形峰值电流。 发光元件驱动部产生通过根据数字信号的振幅和峰值电流组合信号幅度电流而获得的驱动电流。 然后,发光元件驱动部通过使用驱动电流来驱动发光元件。 信号分析部分分析数字信号,以便根据数字信号的脉冲宽度来设置控制信号。 剪辑部分根据由信号分析部分设置的控制信号剪切驱动电流的峰值电流。
    • 5. 发明申请
    • Optical transmitter circuit
    • 光发射机电路
    • US20070171946A1
    • 2007-07-26
    • US11657105
    • 2007-01-24
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • H01S3/13
    • H01S5/06832H01S5/0427H04B10/504H04B10/508
    • A first peaking current generating section 1 generates a first peaking current P1 in synchronism with the transitions of a digital signal S, being positive at the rising edge and negative at the falling edge. A second peaking current generating section 3 generates a second peaking current P2 in synchronism with the transitions of the digital signal S, being negative at the rising edge and positive at the falling edge. A first light emitting element driving section 2 produces a first driving current D1 obtained by combining together a signal amplitude current according to the amplitude of the digital signal S and a first peaking current P1. A second light emitting element driving section 4 produces a second driving current D2 obtained by combining together the signal amplitude current according to the amplitude of the digital signal S and a second peaking current P2. Then, the first and second light emitting element driving sections 2 and 4 drive the light emitting element 5 by using a driving current D3 obtained by subtracting the first driving current D1 from the second driving current D2.
    • 第一峰值电流产生部分1与数字信号S的跃迁同步地产生第一峰值电流P 1,其在上升沿为正,在下降沿为负。 第二峰值电流产生部分3产生与数字信号S的跃迁同步的第二峰值电流P 2,在上升沿为负,在下降沿为正。 第一发光元件驱动部分2产生通过根据数字信号S的振幅和第一峰值电流P1将信号幅度电流组合在一起获得的第一驱动电流D1。第二发光元件驱动部分4产生第二驱动电流 通过根据数字信号S的振幅和第二峰值电流P 2将信号幅度电流组合在一起而获得的驱动电流D 2。然后,第一和第二发光元件驱动部分2,4驱动发光元件5 使用从第二驱动电流D 2减去第一驱动电流D 1而获得的驱动电流D 3。
    • 6. 发明授权
    • Optical transmitter circuit
    • 光发射机电路
    • US07907852B2
    • 2011-03-15
    • US11657105
    • 2007-01-24
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • H04B10/20
    • H01S5/06832H01S5/0427H04B10/504H04B10/508
    • A first peaking current generating section generates a first peaking current in synchronism with the transitions of a digital signal, being positive at the rising edge and negative at the falling edge. A second peaking current generating section generates a second peaking current in synchronism with the transitions of the digital signal, being negative at the rising edge and positive at the falling edge. A first light emitting element driving section produces a first driving current obtained by combining together a signal amplitude current according to the amplitude of the digital signal and a first peaking current. A second light emitting element driving section produces a second driving current obtained by combining together the signal amplitude current according to the amplitude of the digital signal and a second peaking current. Then, the first and second light emitting element driving sections and drive the light emitting element by using a driving current obtained by subtracting the first driving current from the second driving current.
    • 第一峰值电流产生部分与数字信号的转变同步地产生第一峰值电流,在上升沿为正,在下降沿为负。 第二峰值电流产生部分与数字信号的转变同步产生第二峰值电流,在上升沿为负,在下降沿为正。 第一发光元件驱动部产生通过根据数字信号的振幅和第一峰值电流组合信号幅度电流而获得的第一驱动电流。 第二发光元件驱动部产生通过根据数字信号的振幅和第二峰值电流组合信号振幅电流而获得的第二驱动电流。 然后,第一和第二发光元件驱动部分通过使用从第二驱动电流减去第一驱动电流而获得的驱动电流来驱动发光元件。
    • 9. 发明申请
    • OPTICAL TRANSMITTER CIRCUIT
    • 光发射机电路
    • US20100166436A1
    • 2010-07-01
    • US12280076
    • 2007-02-20
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • Kazutoshi HaseHiroyuki SasaiTomoaki Ieda
    • H04B10/04
    • H04B10/502H04B10/564
    • A peaking current generating section (2) generates a spire-shaped peaking current that is in synchronism with the transitions of the digital signal (S), at the rising edge and the falling edge. A light emitting element driving section (5) produces a driving current obtained by combining together a signal amplitude current according to the amplitude of the digital signal (S) and the peaking current. Then, the light emitting element driving section (5) drives a light emitting element (1) by using the driving current. A signal analysis section (9) analyzes the digital signal (S) so as to set a control signal based on the pulse width of the digital signal (S). A clipping section (8) clips the peaking current of the driving current according to the control signal set by the signal analysis section (9).
    • 峰值电流产生部分(2)在上升沿和下降沿产生与数字信号(S)的转变同步的尖峰形峰值电流。 发光元件驱动部(5)产生通过根据数字信号(S)的振幅和峰化电流组合信号振幅电流而获得的驱动电流。 然后,发光元件驱动部(5)通过使用驱动电流来驱动发光元件(1)。 信号分析部(9)分析数字信号(S),以便根据数字信号(S)的脉冲宽度设定控制信号。 剪辑部分(8)根据由信号分析部分(9)设置的控制信号剪切驱动电流的峰值电流。