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1. 发明授权

US07327996B2 High sensitivity radio receiver 有权
标题翻译：高灵敏度无线电接收机
公开(公告)号：US07327996B2
公开(公告)日：2008-02-05
申请号：US10725002
申请日：2003-12-02
申请人： Ning Chen , Yoshiaki Tarusawa , Kei Satoh , Shoichi Narahashi , Noriyoshi Terada , Toshio Nojima
发明人： Ning Chen , Yoshiaki Tarusawa , Kei Satoh , Shoichi Narahashi , Noriyoshi Terada , Toshio Nojima
IPC分类号： H04B1/10
CPC分类号： H04B1/18 , H04B1/036
摘要： The invention relates to a high sensitivity receiver installed outdoors which may be used in a base station of a mobile communication system, for example. A received radio frequency signal is converted into a signal in a desired frequency band by a reception bandpass filter RXF3, is subject to a low noise amplification to a desired level by a low noise reception amplifier LNA4, and the amplified signal is converted into an optical signal by a laser diode LD5. RXF3, LNA4 and LD5 are confined in a heat shielding box. LD5 is cooled by cooling means to the order of critical temperature where RXF3, for example, assumes a superconducting state, whereby the dynamic range is increased and stabilized.
摘要翻译：本发明涉及一种安装在户外的高灵敏度接收机，其可以在例如移动通信系统的基站中使用。接收的射频信号由接收带通滤波器RXF 3转换成期望频带的信号，由低噪声接收放大器LNA4进行低噪声放大到期望的电平，并将放大的信号转换为由激光二极管LD5的光信号。 RXF 3，LNA 4和LD 5被限制在隔热箱中。 LD 5通过冷却装置冷却至临界温度的顺序，其中RXF 3例如呈现超导状态，从而动态范围增加并稳定。

2. 发明授权

US5790555A Signal multiplexer and multiplexing method 失效
标题翻译：信号多路复用和复用方法
公开(公告)号：US5790555A
公开(公告)日：1998-08-04
申请号：US663278
申请日：1996-06-07
申请人： Shoichi Narahashi , Ken Kumagai , Toshio Nojima , Yoshiaki Tarusawa
发明人： Shoichi Narahashi , Ken Kumagai , Toshio Nojima , Yoshiaki Tarusawa
IPC分类号： H03G3/30 , H04B1/04 , H04J1/00 , H04J1/06 , H04J1/16 , H04J1/20 , H04L5/06 , H04L27/10 , H04L27/12 , H04L27/26
CPC分类号： H04J1/06 , H03G3/30 , H03G3/3042 , H04J1/065 , H04J1/16 , H04J1/20 , H04L27/10 , H04L27/12 , H04L5/06 , H04L27/2621
摘要： The frequencies of input modulated signals fed via ports 11.sub.1 to 11.sub.n are converted by frequency converting parts 12.sub.1 to 12.sub.n to different bands, and the converted outputs are applied to power combining part 24 decides if 16 via variable attenuators 21.sub.1 to 21.sub.n, respectively, and provided therefrom as a multiplexed output a portion of which is branched. The envelope power level L is detected by level detecting part 23. Control with the detected level L exceeds a level L.sub.s that is k times the average power of the multiplexed signal k being about 4 to 5, and controls the attenuators 21.sub.1 to 21.sub.n to attenuate the average power of the modulated signal by k/n-fold or less for about 1/.DELTA.F.sub.0 (sec), where (.DELTA.F.sub.0 �Hz! is the frequency bandwidth of the multiplexed signal.
摘要翻译： PCT No.PCT / JP95 / 02467 Sec。 371日期1996年6月7日第 102（e）日期1996年6月7日PCT 1995年12月4日PCT PCT。公开号WO96 / 18249 日期1996年6月13日经由端口111至11n馈送的输入调制信号的频率由频率转换部分121至12n转换为不同频带，并且转换后的输出被施加到功率合成部分24通过可变衰减器211至21n判定16 ，并作为其一部分分支的多路复用输出。包络功率电平L由电平检测部23检测。具有检测电平L的控制超过多路复用信号k的k倍的k倍的电平Ls为约4〜5，并且控制衰减器211〜21n衰减对于约1 / DELTA F0（sec），调制信号的平均功率为k / n倍或更小，其中（DELTA F0 [Hz]是多路复用信号的频率带宽）。

3. 发明授权

US06963758B2 High-sensitivity wireless receiving device and high-frequency unit used therefor 有权
标题翻译：高灵敏度无线接收设备和高频单元
公开(公告)号：US06963758B2
公开(公告)日：2005-11-08
申请号：US10130278
申请日：2001-10-01
申请人： Shoichi Narahashi , Kunihiro Kawai , Kei Satoh , Toshio Nojima
发明人： Shoichi Narahashi , Kunihiro Kawai , Kei Satoh , Toshio Nojima
IPC分类号： H04B1/036 , H04B1/18 , H04B7/04 , H04M1/00 , H04B7/00
CPC分类号： H04B1/18 , H04B1/036 , H04B7/0491
摘要： In a high sensitive radio receiver system for a diversity reception from two antennae per each of three sectors (SC1, SC3, SC3), a series connection of a bandpass filter (31 to 36) and a low noise amplifier (41 to 46) is contained in each of a plurality of vacuum chambers (81 to 86), the interior of which is cooled by a distinct, separate cooling unit (91 to 96). The two antennae per sector are connected to bandpass filters contained in different vacuum chambers.
摘要翻译：在用于从三个扇区（SC 1，SC 3，SC 3）中的每一个的两个天线进行分集接收的高灵敏度无线电接收机系统中，带通滤波器（3 <1> 3 <3> 并且在多个真空室（8L1）中的每一个中包含低噪声放大器（4 <1> 4 <6>）），其内部由不同的分开的冷却单元（9＆gt;至9＆lt; 6＆gt;）冷却，。每个扇区的两个天线连接到包含在不同真空室中的带通滤波器。

4. 发明授权

US06480706B1 High sensitivity radio receiver 有权
标题翻译：高灵敏度无线电接收机
公开(公告)号：US06480706B1
公开(公告)日：2002-11-12
申请号：US09466062
申请日：1999-12-17
申请人： Tetsuya Mimura , Kei Satoh , Shoichi Narahashi , Toshio Nojima
发明人： Tetsuya Mimura , Kei Satoh , Shoichi Narahashi , Toshio Nojima
IPC分类号： H04Q1112
CPC分类号： H01Q3/36 , H01Q1/364 , H04B1/036 , H04B1/18 , H04B7/084
摘要： A receiver directs the center of the main beam of the antenna directivity response in a desired direction by passing signals received by n antenna elements 1a to 1d through a phase shifter 3. An output from the phase shifter 3 is passed through a receiving filter 5 and is then amplified by a low noise amplifier 6 to be delivered as an output. The phase shifter 3 is confined together with the receiving filter 5 and the amplifier 6 in a cryostat 8, and the phase shifter 3 as well as the receiving filter 5 and the amplifier 6 are cooled down by cooling means 9 through a cold stage 9a, whereby the thermal noises generated therein are reduced to a minimum.
摘要翻译：接收器通过将n个天线元件1a至1d接收的信号通过移相器3，将天线方向性响应的主波束的中心在期望的方向上引导。来自移相器3的输出通过接收滤波器5和然后被低噪声放大器6放大，作为输出被输送。移相器3与低频恒温器8中的接收滤波器5和放大器6一起被限制，并且移相器3以及接收滤波器5和放大器6通过冷却装置9通过冷级9a冷却，由此其中产生的热噪声减小到最小。

5. 发明授权

US06208204B1 Feedforward amplifier 有权
标题翻译：前馈放大器
公开(公告)号：US06208204B1
公开(公告)日：2001-03-27
申请号：US09460707
申请日：1999-12-14
申请人： Yasunori Suzuki , Toshio Nojima , Shoichi Narahashi
发明人： Yasunori Suzuki , Toshio Nojima , Shoichi Narahashi
IPC分类号： H03F366
CPC分类号： H03F1/3229
摘要： In the balance adjustment using a pilot signal in a distortion detector and a distortion canceller of a feed-forward amplifier for amplifying a CDMA transmission signal, a pilot code is spread by a long code different from that of the CDMA transmission signal to obtain the pilot signal. The pilot signal is converted to a signal of the transmission frequency band, and the converted signal is injected into the transmission signal at the input side of the amplifier. The pilot signal frequency band is detected from the output of an auxiliary amplifier of the distortion canceller and converted to the base band, thereafter being despread to detect the pilot signal (code).
摘要翻译：在使用失真检测器中的导频信号的平衡调整和用于放大CDMA发送信号的前馈放大器的失真消除器的情况下，导频码以与CDMA发送信号不同的长码进行扩频，以获得导频信号。将导频信号转换为发送频带的信号，并将转换的信号注入放大器的输入侧的发送信号。从失真消除器的辅助放大器的输出检测导频信号频带，并将其转换为基带，之后被解扩以检测导频信号（代码）。

6. 发明授权

US5313657A Receiver capable of reliably detecting a failure 失效
标题翻译：能够可靠地检测故障的接收器
公开(公告)号：US5313657A
公开(公告)日：1994-05-17
申请号：US964669
申请日：1992-10-22
申请人： Hironori Sakamoto , Satoru Ohara , Toshio Nojima , Shoichi Narahashi , Makoto Maeta
发明人： Hironori Sakamoto , Satoru Ohara , Toshio Nojima , Shoichi Narahashi , Makoto Maeta
IPC分类号： H04B1/76 , H04B17/00 , H04B17/20 , H04B17/29 , H04B1/10 , H03F3/66 , G01R19/00
CPC分类号： H04B1/76 , H04B17/29
摘要： In a receiver comprising a receiver filter (12) with a frequency attenuation band and a pilot oscillator (25) for generating a pilot oscillation signal with a pilot frequency in the frequency attenuation band, a coupler (26) couples the pilot oscillation signal and a filtered receiver signal of the receiver filter to form a coupled signal. A low noise amplifier (13) amplifies the coupled signal into an amplified signal which comprises an amplified receiver signal component derived from the filtered receiver signal and an amplified pilot oscillation signal component derived from the pilot oscillation signal. A branching filter (27) branches the amplified signal into the amplified receiver signal component and the amplified pilot oscillation signal. A pilot signal component detector unit (28) detects the amplified pilot oscillation signal component to produce a direct pilot signal. A failure monitoring unit (29) monitors the direct pilot signal to produce a fault signal when the direct pilot signal is found faulty.
摘要翻译：在包括具有频率衰减频带的接收机滤波器（12）和用于在频率衰减频带中产生具有导频的导频振荡信号的导频振荡器（25）的接收机中，耦合器（26）将导频振荡信号和滤波的接收机滤波器的接收器信号以形成耦合信号。低噪声放大器（13）将耦合信号放大为放大信号，该放大信号包括从经滤波的接收机信号导出的放大的接收机信号分量和从导频振荡信号导出的放大的导频振荡信号分量。分路滤波器（27）将放大的信号分支为放大的接收机信号分量和放大的导频振荡信号。导频信号分量检测器单元（28）检测放大的导频振荡信号分量以产生直接导频信号。当发现直接导频信号有故障时，故障监视单元（29）监视直接导频信号以产生故障信号。

7. 发明授权

US5796307A Amplifying device having input and output nonlinear phase shifters of opposite phase-frequency characteristics 失效
标题翻译：具有相反相位特性的输入和输出非线性移相器的放大装置
公开(公告)号：US5796307A
公开(公告)日：1998-08-18
申请号：US749240
申请日：1996-11-14
申请人： Ken Kumagai , Toshio Nojima , Shoichi Narahashi
发明人： Ken Kumagai , Toshio Nojima , Shoichi Narahashi
IPC分类号： H03F1/32 , H03F1/26
CPC分类号： H03F1/3229 , H03F1/3241
摘要： An input signal is applied to a first phase shifter whose phase shift amount-vs.frequency characteristic is a square-law characteristic, then the output from the first phase shifter is amplified by an amplifier, and the amplified output is applied to a second phase shifter which has a phase shift amount-vs.-frequency characteristic that is substantially inverse to that of the first phase shifter, thereby obtaining an amplified output signal from the second phase shifter.
摘要翻译：输入信号被施加到相移量 - 频率特性是平方律特性的第一移相器，然后由放大器放大来自第一移相器的输出，并且将放大的输出施加到第二相位移相器具有与第一移相器基本上相反的相移量 - 频率特性，从而获得来自第二移相器的放大的输出信号。

8. 发明授权

US5166634A Feed-forward amplifier 失效
标题翻译：进给放大器
公开(公告)号：US5166634A
公开(公告)日：1992-11-24
申请号：US727987
申请日：1991-07-10
申请人： Shoichi Narahashi , Toshio Nojima , Makoto Maeta , Kazuaki Murota
发明人： Shoichi Narahashi , Toshio Nojima , Makoto Maeta , Kazuaki Murota
IPC分类号： H03F1/32
CPC分类号： H03F1/3235 , H03F2201/3212
摘要： In a feed-forward amplifier which has an error detection circuit for detecting a nonlinear distortion component of a main amplifier and an error rejection circuit for amplifying the detected distortion component by an auxiliary amplifier and injecting it into the main amplifier to cancel an error component, a first pilot signal is injected into a signal input path and a second pilot signal is injected into a signal amplification path of the error detection circuit. A first variable attenuator and a first variable phase shifter of the error detection circuit are adjusted by a control circuit so that the level of the first pilot signal component on an error injection path of the error rejection circuit decreases to minimum. A second variable attenuator and a second variable phase shifter of the error rejection circuit are adjusted by the control circuit so that the level of the second pilot signal component on a signal output path decreases to a minimum. The first pilot signal component which appears on the signal output path is rejected by a filter or cancelled by supplying the error injection path or signal output path with the first pilot signal after adjusting its amplitude and phase. Alternatively, the frequency of the first pilot signal to be injected into the signal input path is spread to lower the level of the first pilot signal per unit spectrum which appears on the signal output path.

9. 发明授权

US07378924B2 Filter with improved capacitive coupling portion 有权
标题翻译：滤波器具有改进的电容耦合部分
公开(公告)号：US07378924B2
公开(公告)日：2008-05-27
申请号：US11046942
申请日：2005-02-01
申请人： Daisuke Koizumi , Kei Satoh , Shoichi Narahashi
发明人： Daisuke Koizumi , Kei Satoh , Shoichi Narahashi
IPC分类号： H01P1/20 , H01P3/08 , H01P5/12 , H01P7/08
CPC分类号： H01P1/2013
摘要： A filter is provided which comprises a single dielectric, and a line conductor and a ground conductor disposed on the dielectric. The line conductor includes first and second line conductor sections having opposed portions defining an open gap therebetween to form a capacitive coupling section. The edge lines of the opposed portions of the first and second conductor sections defining the open gap therebetween are substantially elongated relative to the line width of the corresponding conductor sections. The thus constructed filter is capable of suppressing a variation in the normalized J-inverter value even if dimensional errors relative to the design specifications due to overetching or underetching involved during the manufacture.
摘要翻译：提供了一种滤波器，其包括单个电介质，以及设置在电介质上的线路导体和接地导体。线路导体包括第一和第二线路导体部分，其具有限定它们之间的开放间隙的相对部分，以形成电容耦合部分。限定它们之间的开放间隙的第一和第二导体部分的相对部分的边缘线相对于相应的导体部分的线宽度基本上是细长的。这样构成的滤波器即使在制造过程中涉及到的由于过度蚀刻或不平整而导致的相对于设计规格的尺寸误差，也能够抑制归一化的J-逆变器值的变化。

10. 发明授权

US07161449B2 Coplanar waveguide resonator 失效
标题翻译：共面波导谐振器
公开(公告)号：US07161449B2
公开(公告)日：2007-01-09
申请号：US10934463
申请日：2004-09-07
申请人： Kei Satoh , Shoichi Narahashi , Daisuke Koizumi , Yasushi Yamao
发明人： Kei Satoh , Shoichi Narahashi , Daisuke Koizumi , Yasushi Yamao
IPC分类号： H01P1/203
CPC分类号： H01P7/086
摘要： A center conductor having a length L1, which is equivalent in electrical length to one quarter wavelength, and ground conductors disposed on the opposite sides of the center conductor with a gap portion therebetween in coplanar manner are formed on a dielectric substrate. The center conductor and the ground conductors located on the opposite sides thereof, and are connected together by shorting ends. This results in the formation of corner areas, respectively, whereby obtaining a coplanar waveguide resonator. An edge line of the shorting end is recessed to have a curve configuration so that each corner area has an angle greater than 90 degrees, which reduces power current concentration at the corner points in the respective corner areas.
摘要翻译：在电介质基板上形成具有长度L 1的中心导体，其电长度与四分之一波长相当，并且配置在中心导体的相对侧上的接地导体，其间具有间隙部分。中心导体和接地导体位于其相对侧，并通过短路端连接在一起。这导致分别形成拐角区域，从而获得共面波导谐振器。短路端的边缘线凹入以具有曲线构造，使得每个拐角区域具有大于90度的角度，这降低了各个拐角区域中角点处的功率电流集中。

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