公开(公告)号：US5923228A

公开(公告)日：1999-07-13

申请号：US812691

申请日：1997-03-06

申请人： Takekazu Okada ,  Satoru Shinmura ,  Fumio Kanaya ,  Akira Toba ,  Toshihiro Nomoto

发明人： Takekazu Okada ,  Satoru Shinmura ,  Fumio Kanaya ,  Akira Toba ,  Toshihiro Nomoto

IPC分类号： H01P1/215 ,  H01P1/23 ,  H03H2/00 ,  H04B3/03

CPC分类号： H03H2/001

摘要： An S/N enhancer is provided which can be formed to be small in size and in which impedance matching can easily be achieved. The S/N enhancer includes two magnetostatic wave elements. First to fourth transducers each in the shape of a single line are disposed on YIG thin films of the magnetostatic wave elements in parallel and spaced from one another. An input terminal is connected to one end of the first transducer. An attenuator is connected between the other end of the first transducer and one end of the third transducer. A 180.degree. shifter and another attenuator are connected in series between one end of the second transducer and one end of the fourth transducer. An output terminal is connected to the other end of the fourth transducer. The other ends of the second and third transducers are respectively grounded.

摘要翻译： 提供了可以形成为尺寸小并且可以容易地实现阻抗匹配的S / N增强器。 S / N增强器包括两个静磁波元件。 以单线形状的第一至第四换能器彼此并联并且彼此间隔开地设置在静磁波元件的YIG薄膜上。 输入端子连接到第一换能器的一端。 衰减器连接在第一换能器的另一端和第三换能器的一端之间。 180度移位器和另一衰减器串联连接在第二换能器的一端和第四换能器的一端之间。 输出端子连接到第四换能器的另一端。 第二和第三换能器的另一端分别接地。

公开(公告)号：US5523725A

公开(公告)日：1996-06-04

申请号：US395762

申请日：1995-02-28

申请人： Youhei Ishikawa ,  Takekazu Okada ,  Satoru Shinmura ,  Fumio Kanaya ,  Shinichiro Ichiguchi ,  Toshihito Umegaki ,  Toshihiro Nomoto

发明人： Youhei Ishikawa ,  Takekazu Okada ,  Satoru Shinmura ,  Fumio Kanaya ,  Shinichiro Ichiguchi ,  Toshihito Umegaki ,  Toshihiro Nomoto

IPC分类号： H01P1/23 ,  H03H2/00 ,  H04B1/10

CPC分类号： H03H2/001 ,  H01P1/23

摘要： A signal-to-noise enhancer 10 includes a first 90 degree hybrid set 20. A first output end of the first 90 degree hybrid set 20 is connected to an input end of a limiter used a magnetostatic wave element 62a utilized the magnetostatic surface wave mode. Also, a second output end of the first 90 degree hybrid set 20 is connected to an input end of a filter used a magnetostatic wave element 62b similar to the magnetostatic wave element 62a in structure, via a resistor 32 as a first attenuator. Furthermore, an output end of the limiter is connected to a first input end of a second 90 degree hybrid set 40 via a resistor 52 as a second attenuator. Also, an output end of the filter is connected to a second input end of the second 90 degree hybrid set 40.

摘要翻译： 信号噪声增强器10包括第一90度混合组20.第一90度混合组20的第一输出端连接到限幅器的输入端，使用静磁波元件62a，利用静磁表面波模式 。 此外，第一90度混合组20的第二输出端通过作为第一衰减器的电阻器32连接到使用类似于静磁波元件62a的静磁波元件62a的滤波器的输入端。 此外，限幅器的输出端通过作为第二衰减器的电阻器52连接到第二90度混合组40的第一输入端。 此外，滤波器的输出端连接到第二90度混合组40的第二输入端。

公开(公告)号：US06727651B2

公开(公告)日：2004-04-27

申请号：US10317096

申请日：2002-12-12

申请人： Akihiko Nemoto ,  Hitoshi Nakagawa ,  Toshihiro Nomoto

发明人： Akihiko Nemoto ,  Hitoshi Nakagawa ,  Toshihiro Nomoto

IPC分类号： H01J2534

CPC分类号： H03F3/58

摘要： Insulating ceramic parts for insulating collector electrodes in a traveling wave tube and a vacuum envelope are formed in a cylindrical shape in which the central axis of the inner diameter diverges from the central axis of the outer diameter and are constructed such that holes are provided in portions of the insulating ceramic parts where the thickness in the radial direction is great, and high-voltage leads for supplying prescribed voltages to said collector electrodes from the exterior pass through these holes.

摘要翻译： 在行波管和真空外壳中的用于绝缘集电极的绝缘陶瓷部件形成为圆柱形，其中内径的中心轴线从外径的中心轴线分叉，并且构造成使得孔部分 的绝缘陶瓷部件，其中径向厚度大，以及从外部向所述集电电极提供规定电压的高压引线穿过这些孔。

公开(公告)号：US06490010B1

公开(公告)日：2002-12-03

申请号：US09308263

申请日：1999-05-14

申请人： Kazuhiko Shibuya ,  Junji Kumada ,  Yuichi Iwadate ,  Hiroyuki Hamazumi ,  Toshihiro Nomoto ,  Kouichi Takano ,  Tomohiro Saito ,  Shoji Tanaka ,  Fumiaki Minematsu ,  Akinori Hashimoto ,  Shigeyuki Itoh ,  Hajime Matsumura ,  Hisakazu Katoh ,  Masaru Takechi

发明人： Kazuhiko Shibuya ,  Junji Kumada ,  Yuichi Iwadate ,  Hiroyuki Hamazumi ,  Toshihiro Nomoto ,  Kouichi Takano ,  Tomohiro Saito ,  Shoji Tanaka ,  Fumiaki Minematsu ,  Akinori Hashimoto ,  Shigeyuki Itoh ,  Hajime Matsumura ,  Hisakazu Katoh ,  Masaru Takechi

IPC分类号： H04N550

CPC分类号： H03J7/02 ,  H04L27/22 ,  H04L2027/0057 ,  H04N5/4401 ,  H04N5/455 ,  H04N5/50

摘要： Stabilized carrier recovery is achieved even at the time of a low C/N ratio by measuring the phase of a signal and controlling VCO or NCO (Numerical Controlled Oscillator) using only a period having few constellation points. At this time, false lock phenomenon is avoided as follows. That is, relatively short SYNC modulated by an already-known pattern is entered into a modulation wave, VCO or NCO oscillation frequency is swept in a wide range and sweep is stopped at a frequency in which the SYNC can be received, thereby carrying out coarse control AFC. Further, a period having long to some extent, having few constellation points is provided in the modulation wave and then, a difference between the frequency of a received modulated signal and a local oscillation signal of VCO or NCO is obtained in this period. This frequency difference is analyzed according to the phase differential function method, self-correlation function method or count method, and the VCO or NCO is controlled based on this result of analysis.

摘要翻译： 即使在C / N比较低的时候，通过测量信号的相位并且仅使用具有少量星座点的时段来控制VCO或NCO（数控振荡器），也能实现稳定的载波恢复。 此时，如下避免假锁现象。 也就是说，通过已知的模式调制的相对较短的SYNC被输入到调制波中，VCO或NCO振荡频率在宽范围内被扫描，并且在可以接收SYNC的频率上停止扫描，从而执行粗略 控制AFC。 此外，在调制波中提供具有很少的星座点的长时间段，然后在该周期中获得接收到的调制信号的频率与VCO或NCO的本地振荡信号之间的差。 根据相位差函数法，自相关函数法或计数法对该频差进行分析，并根据分析结果对VCO或NCO进行控制。

公开(公告)号：US06232850B1

公开(公告)日：2001-05-15

申请号：US09256074

申请日：1999-02-24

申请人： Masanori Ikari ,  Masayuki Tanno ,  Toshihiko Ryuo ,  Takao Kuki ,  Toshihiro Nomoto

发明人： Masanori Ikari ,  Masayuki Tanno ,  Toshihiko Ryuo ,  Takao Kuki ,  Toshihiro Nomoto

IPC分类号： H01P1215

CPC分类号： H03H2/001

摘要： A magnetostatic wave device includes a Gd3Ga5O12 substrate off-angled from a {110} plane. A magnetic thin film including a crystal of garnet is formed on the Gd3Ga5O12 substrate by liquid-phase epitaxy. A transducer operates for exciting magnetostatic wave in the magnetic thin film in response to an RF electric signal. A bias magnetic field is applied to the magnetic thin film. There is a relation as 20°≦|&thgr;1+&thgr;2|≦35°, where “&thgr;1” denotes an angle between a longitudinal direction of the transducer and a orientation of the crystal in the magnetic thin film, and “&thgr;2” denotes an angle between a transverse direction of the transducer and a specified direction. The specified direction is parallel to a line of intersection between a horizontal plane of the magnetic thin film and a given plane which is perpendicular to the horizontal plane of the magnetic thin film and which contains a direction of the bias magnetic field. Also, there is a relation as |&thgr;3|≦75°, where “&thgr;3” denotes an angle between the specified direction and the direction of the bias magnetic field.

摘要翻译： 静磁波装置包括从{110}平面偏斜的Gd 3 Ga 5 O 12衬底。 通过液相外延在Gd3Ga5O12基板上形成包含石榴石晶体的磁性薄膜。 传感器用于响应于RF电信号激励磁薄膜中的静磁波。 向磁性薄膜施加偏置磁场。 存在20°<= |θ1+θ2| <= 35°的关系，其中“theta1”表示换能器的纵向方向与磁性薄膜中的晶体的<001>取向之间的角度， θ2“表示换能器的横向与指定方向之间的角度。 指定的方向平行于磁性薄膜的水平面与垂直于磁性薄膜的水平面并且包含偏置磁场的方向的给定平面之间的交线。 另外，作为|θ3 | <= 75°存在关系，其中“θ3”表示指定方向与偏置磁场方向之间的角度。

公开(公告)号：US5883555A

公开(公告)日：1999-03-16

申请号：US915680

申请日：1997-08-21

申请人： Masanori Ikari ,  Masayuki Tanno ,  Toshihiko Ryuo ,  Takao Kuki ,  Toshihiro Nomoto

发明人： Masanori Ikari ,  Masayuki Tanno ,  Toshihiko Ryuo ,  Takao Kuki ,  Toshihiro Nomoto

IPC分类号： H03H2/00 ,  H01P1/215

CPC分类号： H03H2/001

摘要： A magnetostatic wave device includes a Gd.sub.3 Ga.sub.5 O.sub.12 substrate off-angled from a {110} plane. A magnetic thin film including a crystal of garnet is formed on the Gd.sub.3 Ga.sub.5 O.sub.12 substrate by liquid-phase epitaxy. A transducer is operative for exciting magnetostatic wave in the magnetic thin film in response to an RF electric signal. A bias magnetic field is applied to the magnetic thin film. There is a relation as 20.degree..ltoreq..vertline..theta..sub.1 +.theta..sub.2 .vertline..ltoreq.35.degree., where ".theta..sub.1 " denotes an angle between a longitudinal direction of the transducer and a orientation of the crystal in the magnetic thin film, and ".theta..sub.2 " denotes an angle between a direction of the bias magnetic field and a transverse direction of the transducer which is perpendicular to the longitudinal direction thereof.

摘要翻译： 静磁波装置包括从{110}平面偏斜的Gd 3 Ga 5 O 12衬底。 通过液相外延在Gd3Ga5O12基板上形成包含石榴石晶体的磁性薄膜。 传感器用于响应于RF电信号激励磁薄膜中的静磁波。 向磁性薄膜施加偏置磁场。 有一个关系为20°取向之间的角度，“θ2” 在偏置磁场的方向和与其纵向方向垂直的换能器的横向之间。

公开(公告)号：US5880651A

公开(公告)日：1999-03-09

申请号：US916409

申请日：1997-08-22

申请人： Masanori Ikari ,  Masayuki Tanno ,  Toshihiko Ryuo ,  Takao Kuki ,  Toshihiro Nomoto

发明人： Masanori Ikari ,  Masayuki Tanno ,  Toshihiko Ryuo ,  Takao Kuki ,  Toshihiro Nomoto

IPC分类号： C30B29/28 ,  H01F10/28 ,  H03H2/00 ,  H01P1/215

CPC分类号： H03H2/001

摘要： A reflection-type S/N enhancer includes a Gd.sub.3 Ga.sub.5 O.sub.12 substrate off-angled from a {110} plane. A magnetic thin film including a crystal of garnet is formed on the Gd.sub.3 Ga.sub.5 O.sub.12 substrate by liquid-phase epitaxy. The magnetic thin film has a saturation magnetization in a range of 500 G to 1,100 G. A transducer is operative for exciting magnetostatic wave in the magnetic thin film in response to an RF electric signal. A bias magnetic field is applied to the magnetic thin film. There is a relation as .vertline..theta..sub.1 +.theta..sub.2 .vertline. orientation of the crystal in the magnetic thin film, and ".theta..sub.2 " denotes an angle between a direction of the bias magnetic field and a transverse direction of the transducer in a horizontal plane. The transverse direction of the transducer is perpendicular to the longitudinal direction thereof.

摘要翻译： 反射型S / N增强器包括从{110}平面偏斜的Gd 3 Ga 5 O 12衬底。 通过液相外延在Gd3Ga5O12基板上形成包含石榴石晶体的磁性薄膜。 磁性薄膜的饱和磁化强度在500G至1100G的范围内。传感器用于响应于RF电信号激励磁性薄膜中的静磁波。 向磁性薄膜施加偏置磁场。 有一个关系为| θ1θθ2 | <45°，其中“θ1”表示换能器的纵向方向与磁性薄膜中的晶体的<001>取向之间的角度，“θ2”表示 偏置磁场的方向和换能器的横向在水平面内。 换能器的横向垂直于其纵向方向。

公开(公告)号：US5307516A

公开(公告)日：1994-04-26

申请号：US760070

申请日：1991-09-13

申请人： Toshihiro Nomoto

发明人： Toshihiro Nomoto

IPC分类号： H03H2/00 ,  H04B1/26

CPC分类号： H03H2/001

摘要： A magnetostatic wave (MSW) signal-to-noise (S/N) enhancer includes a divider for dividing an input signal into a first and a second path signals, first and second microwave-MSW transducers for transducing the first and second path signals into the first and second path transduced signals, and a combiner for combining the first and second path transduced signals in opposite phase to each other. The first path signal contains a desired signal which is higher than a first saturation level and a noise component which is lower than the first path threshold power level. The first microwave-MSW transducer outputs the noise in linear operation and the desired signal in saturation operation. All the component signals of the second path signal including noise are lower than the second path threshold power level and are output in a linear operation by the second microwave-MSW transducer.

摘要翻译： 静态波（MSW）信噪比（S / N）增强器包括用于将输入信号分成第一和第二路径信号的分频器，用于将第一和第二路径信号转换成第一和第二微波 - MSW换能器 第一和第二路径转换信号，以及用于将彼此相反相位的第一和第二路径转换信号组合的组合器。 第一路径信号包含高于第一饱和电平的期望信号和低于第一路径阈值功率电平的噪声分量。 第一个微波 - MSW传感器输出线性运行中的噪声和饱和运行期望的信号。 包括噪声的第二路径信号的所有分量信号都低于第二路径阈值功率电平，并且由第二微波 - MSW换能器在线性运算中输出。