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1. 发明授权

US6057630A Surface acoustic wave device 失效
标题翻译：表面声波装置
公开(公告)号：US6057630A
公开(公告)日：2000-05-02
申请号：US61125
申请日：1998-04-16
申请人： Hitoshi Yanagihara , Takashi Shiba , Katsumi Itoh , Akitsuna Yuhara
发明人： Hitoshi Yanagihara , Takashi Shiba , Katsumi Itoh , Akitsuna Yuhara
IPC分类号： H03H9/145 , H03H9/02 , H03H9/25 , H03H9/64 , H01L41/04 , H03H9/00
CPC分类号： H03H9/02842 , H03H9/6489
摘要： There is provided a surface acoustic wave device for use as a filter in a television receiver set which can reduce reflection waves generated from outermost electrodes of input and output interdigital transducers to improve various filter characteristics. In the surface acoustic wave device having, on a piezoelectric substrate, the input interdigital transducer for converting an electric signal into a surface acoustic wave and the output interdigital transducer, disposed to oppose the input interdigital transducer, for converting the surface acoustic wave resulting from the conversion by the input interdigital transducer into an electric signal, a first dummy electrode is provided to a first outermost electrode finger of the output interdigital transducer, the first outermost electrode finger being located at one end of the output interdigital transducer opposite to the input interdigital transducer, and having an electrode aperture length of .lambda./4 where n represents a wavelength of the surface acoustic wave, and a second dummy electrode is provided to a second outermost electrode finger of the input interdigital transducer, the second outermost electrode finger being located at one edge of the input interdigital transducer opposite to the output interdigital transducer, and having an electrode aperture length of .lambda./4.
摘要翻译：提供了一种用作电视接收机中的滤波器的表面声波装置，其可以减少由输入和输出叉指式换能器的最外侧电极产生的反射波，以改善各种滤波器特性。在压电基板上具有用于将电信号转换成表面声波的输入叉指换能器和与输入叉指式换能器相对设置的输出叉指式换能器的声表面波装置中，用于转换由由输入叉指式换能器转换为电信号，第一虚拟电极被提供给输出叉指式换能器的第一最外电极指，第一最外电极指位于与输入叉指式换能器相对的输出叉指式换能器的一端，并且具有λ/ 4的电极孔径长度，其中n表示声表面波的波长，并且第二虚拟电极设置到输入叉指式换能器的第二最外电极指，第二最外电极指位于一个输入叉指传感器的边缘相反到输出叉指式换能器，并具有λ/ 4的电极孔径长度。

2. 发明授权

US07274729B2 Spread spectrum communication device and communication system 失效
标题翻译：扩频通信设备和通信系统
公开(公告)号：US07274729B2
公开(公告)日：2007-09-25
申请号：US10730003
申请日：2003-12-09
申请人： Takashi Shiba , Akitsuna Yuhara , Yoshihiro Yamada , Yasuhiro Ohta
发明人： Takashi Shiba , Akitsuna Yuhara , Yoshihiro Yamada , Yasuhiro Ohta
IPC分类号： H04B1/707
CPC分类号： H04J13/00 , H04B1/70712 , H04J13/0022
摘要： A structure of a spectrum spreading communication device which solves the problem with the conventional spectrum spreading communication using Barker codes, etc., and limits the rise of the side-lobe of a correctional signal independently of the order of information codes by use of a code sequence having a code length of at least 14. The spectrum spreading communication device uses a pseudo-noise code having code length of at least 14 and a self-correlation side-lobe of not greater than 3 as a pseudo-noise code of a direct spreading communication device which uses the pseudo-noise codes whose polarities are inverted so as to deal with also digital information. Thus, even when the pseudo-noise code length is 14 or more, the side-lobe of the correction coefficient can be restricted. Accordingly, the error rate of the spectrum spreading communication device is reduced and the processing gain is improved.
摘要翻译：频谱扩展通信装置的结构，其解决了使用巴克码等的常规频谱扩展通信的问题，并且通过使用代码来独立于信息码的顺序来限制校正信号的旁瓣的上升码长至少为14的序列。频谱扩展通信装置使用具有至少14的码长和不大于3的自相关旁瓣的伪噪声码作为直接的伪噪声码扩展通信装置，其使用极性反转的伪噪声码，以处理数字信息。因此，即使伪噪声码长度为14以上，也可以限制校正系数的旁瓣。因此，频谱扩展通信装置的误码率降低，处理增益提高。

3. 发明授权

US4689586A Surface elastic wave device 失效
标题翻译：表面弹性波装置
公开(公告)号：US4689586A
公开(公告)日：1987-08-25
申请号：US869979
申请日：1986-06-02
申请人： Jun Yamada , Akitsuna Yuhara , Takashi Shiba , Yuji Fujita
发明人： Jun Yamada , Akitsuna Yuhara , Takashi Shiba , Yuji Fujita
IPC分类号： H03H9/02 , H03H9/145 , H03H9/42
CPC分类号： H03H9/14505
摘要： A surface acoustic wave (SAW) device comprises a piezo-electric surface acoustic substrate, and plural sets of input/output interdigital electrodes disposed on the substrate. A phase shifter is provided between a sending electrode and a reflecting electrode included in the input or output interdigital electrodes for producing an electrical phase difference to implement a unidirectional electrode. The sending electrode and the reflecting electrode are mutually connected through the phase shifter including two pure reactance elements serially connected between the sending and the reflecting electrodes and a pure reactance element connected to the junction between the two serially connected reactance elements so as to form a T-circuit. When the two serially connected pure reactance elements are selected equal to each other, the operating frequency band is broadened. The phase shifter includes no ohmic resistance and thus is lossless.
摘要翻译：表面声波（SAW）器件包括压电表面声学衬底和设置在衬底上的多组输入/输出叉指电极。在发送电极和包括在输入或输出叉指电极中的反射电极之间提供移相器，用于产生电相差以实现单向电极。发送电极和反射电极通过移相器相互连接，该移相器包括串联连接在发送电极和反射电极之间的两个纯电抗元件和连接到两个串联的电抗元件之间的接点的纯电抗元件，从而形成T 电路当选择两个串联的纯电抗元件彼此相等时，工作频带变宽。移相器不包含欧姆电阻，因此无损耗。

4. 发明授权

US5905324A Surface acoustic wave device and communication device employing the surface acoustic wave device 失效
标题翻译：表面声波装置和采用表面声波装置的通信装置
公开(公告)号：US5905324A
公开(公告)日：1999-05-18
申请号：US517927
申请日：1995-08-22
申请人： Takashi Shiba , Yoshihiro Yamada , Akitsuna Yuhara , Minoru Moteki
发明人： Takashi Shiba , Yoshihiro Yamada , Akitsuna Yuhara , Minoru Moteki
IPC分类号： H03H9/145 , H03H9/64 , H04B1/69 , H04B1/707 , G10K11/36
CPC分类号： H03H9/6406
摘要： A surface acoustic wave device makes it possible to increase the electrode width without generating mass-electrical-loading and is capable of operating in a high-frequency band higher than or equal to the UHF band, and this surface acoustic way device may be used in a communication device to eliminate need for any down-converter which is indispensable to the conventional high-frequency communication device, and which is therefore capable of being manufactured at a reduced cost. The surface acoustic wave device is provided with an electrode structure meeting conditions represented by: s+m=(2n+1)L/(4k), where L is electrode period, not taking into consideration the polarity of an interdigital transducer, m is electrode line width, s is minimum electrode gap width, and n and k are natural numbers. The surface acoustic wave device is used as the demodulator of the communication device.
摘要翻译：声表面波装置可以在不产生质量电荷的情况下增加电极宽度并且能够在高于或等于UHF频带的高频带中操作，并且该表面声学装置可以用于通信装置，以消除对传统的高频通信装置不可缺少的任何下变换器的需要，因此能够以较低的成本制造。表面声波装置具有满足由s + m =（2n + 1）L /（4k）表示的条件的电极结构，其中L是电极周期，不考虑叉指换能器的极性，m是电极线宽度，s为最小电极间隙宽度，n和k为自然数。声表面波装置用作通信装置的解调器。

5. 发明授权

US4728912A Elastic surface wave device 失效
标题翻译：弹性表面波装置
公开(公告)号：US4728912A
公开(公告)日：1988-03-01
申请号：US809181
申请日：1985-12-16
申请人： Akitsuna Yuhara , Jyun Sasaki , Takashi Shiba , Jyun Yamada
发明人： Akitsuna Yuhara , Jyun Sasaki , Takashi Shiba , Jyun Yamada
IPC分类号： H03H3/08 , H03H9/02 , H03H9/145 , H03H9/64
CPC分类号： H03H9/6426 , H03H9/02779 , H03H9/14552
摘要： In an elastic surface wave device comprising a piezoelectric substrate, a first transducer group, and a second transducer group or groups located on one or both sides of the first transducer group to exchange elastic surface waves with the first transducer group, the second transducer group comprises a plurality of transducers sharing the same elastic surface wave propagation path. The geometrical central positions of the individual transducers making up the second transducer group are located symmetrically about the geometrical central position (0--0') of the entire second transducer group, with each pair of such symmetrically located transducers incorporating the same number of pairs. The delay time, that is, the time taken by elastic surface waves propagating between the centers of every two adjoining transducers, excluding the two outermost transducers, is constant (.tau.). The distance between the center of each of the two outermost transducers and that of the transducer adjoining the outermost transducer is determined such that the delay time taken between the two transducers is, if the number of pairs incorporated in the outermost transducer is an integer, equal to an odd-number multiple of one-half of the above-mentioned constant delay time (.tau.), or, if the number of pairs incorporated in the outermost transducer is not an integer, equal to an odd-number multiple of one-half of the above-mentioned constant delay time (.tau.), plus or minus a quater wavelength time.
摘要翻译：在包括压电基板，第一换能器组和位于第一换能器组的一侧或两侧上的第二换能器组的弹性表面波装置中，与第一换能器组交换弹性表面波，第二换能器组包括共享相同的弹性表面波传播路径的多个换能器。构成第二换能器组的各个换能器的几何中心位置围绕整个第二换能器组的几何中心位置（0-0'）对称地定位，每对这样对称定位的换能器包含相同数量的对。延迟时间，即除了两个最外面的换能器之外，在每两个相邻换能器的中心之间传播的弹性表面波所花费的时间是常数（τ）。确定两个最外侧换能器中的每一个的中心与邻近最外侧换能器的换能器的中心之间的距离，使得如果在最外面的换能器中并入的对数为整数，则两个换能器之间所需的延迟时间是相等的到上述恒定延迟时间（τ）的二分之一的奇数倍，或者如果并入最外的换能器中的对数不是整数，则等于一半的奇数倍的上述恒定延迟时间（τ），加上或减去四分之一波长时间。

6. 发明授权

US06697418B1 Spread spectrum communication device and communication system 失效
标题翻译：扩频通信设备和通信系统
公开(公告)号：US06697418B1
公开(公告)日：2004-02-24
申请号：US09558373
申请日：2000-04-26
申请人： Takashi Shiba , Akitsuna Yuhara , Yoshihiro Yamada , Yasuhiro Ohta
发明人： Takashi Shiba , Akitsuna Yuhara , Yoshihiro Yamada , Yasuhiro Ohta
IPC分类号： H04B1707
CPC分类号： H04J13/00 , H04B1/70712 , H04J13/0022
摘要： It is the object of the invention to provide a structure of a novel spectrum spreading communication device which solves the problem with the conventional spectrum spreading communication using Barker codes, etc. and limits the rise of the side-lobe of a correctional signal independently of the order of information codes by use of a code sequence having a code length of at least 14. The spectrum spreading communication device uses a pseudo-noise code having a code length of at least 14 and a self-correlation side-lobe of not greater than 3 as a pseudo-noise code of a direct spreading communication device which uses the pseudo-noise codes whose polarities are inverted so as to deal with also digital information. Thus, even when the pseudo-noise code length is 14 or more, the side-lobe of the correction coefficient can be restricted. Accordingly, the error rate of the spectrum spreading communication device is reduced and the processing gain is improved.
摘要翻译：本发明的目的是提供一种新的频谱扩展通信装置的结构，其解决了使用巴克码等的常规频谱扩展通信的问题，并且限制校正信号的旁瓣的上升，独立于通过使用码长至少为14的码序列的信息码顺序。频谱扩展通信装置使用具有至少14的码长的伪噪声码和不大于14的自相关旁瓣 3作为直接扩展通信装置的伪噪声码，其使用其极性反转的伪噪声码，以处理数字信息。因此，即使伪噪声码长度为14以上，也可以限制校正系数的旁瓣。因此，频谱扩展通信装置的误码率降低，处理增益提高。

7. 发明授权

US6134264A Spread spectrum communication device and communication system 失效
标题翻译：扩频通信设备和通信系统
公开(公告)号：US6134264A
公开(公告)日：2000-10-17
申请号：US875182
申请日：1997-07-21
申请人： Takashi Shiba , Akitsuna Yuhara , Yoshihiro Yamada , Yasuhiro Ohta
发明人： Takashi Shiba , Akitsuna Yuhara , Yoshihiro Yamada , Yasuhiro Ohta
IPC分类号： H04B1/707 , H04B1/7093 , H04J13/16 , H04K1/00
CPC分类号： H04B1/7093 , H04B1/70712 , H04J13/0022 , H04J13/10
摘要： It is the object of the invention to provide a structure of a novel spectrum spreading communication device which solves the problem with the conventional spectrum spreading communication using Barker codes, etc. and limits the rise of the side-lobe of a correctional signal independently of the order of information codes by use of a code sequence having a code length of at least 14. The spectrum spreading communication device uses a pseudo-noise code having a code length of at least 14 and a self-correlation side-lobe of not greater than 3 as a pseudo-noise code of a direct spreading communication device which uses the pseudo-noise codes whose polarities are inverted so as to deal with also digital information. Thus, even when the pseudo-noise code length is 14 or more, the side-lobe of the correction coefficient can be restricted. Accordingly, the error rate of the spectrum spreading communication device is reduced and the processing gain is improved.
摘要翻译： PCT No.PCT / JP95 / 00129 Sec。 371日期1997年7月21日 102（e）日期1997年7月21日PCT提交1995年2月1日PCT公布。出版物WO96 / 24198 日期：1996年8月8日本发明的目的是提供一种新的频谱扩展通信装置的结构，其解决了使用巴克码等的常规频谱扩展通信的问题，并限制了一个校正信号通过使用码长至少为14的码序列独立于信息码的顺序。频谱扩展通信装置使用码长至少为14的伪噪声码和自相关侧码信号，直径扩展通信装置的伪噪声码不大于3的波瓣，其使用极性反转的伪噪声码，以处理数字信息。因此，即使伪噪声码长度为14以上，也可以限制校正系数的旁瓣。因此，频谱扩展通信装置的误码率降低，处理增益提高。

8. 发明授权

US5144185A SAW device 失效
标题翻译： SAW器件
公开(公告)号：US5144185A
公开(公告)日：1992-09-01
申请号：US549643
申请日：1990-07-09
申请人： Akitsuna Yuhara , Jun Sasaki , Hiromi Isomae , Shozi Kawakubo , Jun Yamada
发明人： Akitsuna Yuhara , Jun Sasaki , Hiromi Isomae , Shozi Kawakubo , Jun Yamada
IPC分类号： H03H3/08 , H03H9/145
CPC分类号： H03H3/08 , H03H9/145
摘要： A SAW device having a piezoelectric substrate and interleaved metal electrodes formed on the substrate, in which the formation of the electrodes on the substrate is carried out by sputtering. Further, the metal electrodes may contain an additive of Cu, Ti, Zn, Mg, Fe, Ni, Cr, Ga, Ge, Sn, Pd or Ta. The resulting SAW device is capable of dealing with high frequency electric signals of a larger amplitude, or higher power electric signals, as compared with the conventional SAW device.
摘要翻译：具有压电基板和形成在基板上的交错金属电极的SAW器件，其中基板上的电极的形成通过溅射进行。此外，金属电极可以含有Cu，Ti，Zn，Mg，Fe，Ni，Cr，Ga，Ge，Sn，Pd或Ta的添加剂。与传统的SAW器件相比，所产生的SAW器件能够处理更大振幅或更高功率电信号的高频电信号。

9. 发明授权

US4775814A Saw device 失效
标题翻译：锯装置
公开(公告)号：US4775814A
公开(公告)日：1988-10-04
申请号：US051523
申请日：1987-05-19
申请人： Akitsuna Yuhara , Jun Sasaki , Tetsuya Hirashima , Jun Yamada
发明人： Akitsuna Yuhara , Jun Sasaki , Tetsuya Hirashima , Jun Yamada
IPC分类号： H03H3/08 , H03H9/02 , H03H9/145 , H01L41/08
CPC分类号： H03H3/08 , H03H9/02929 , H03H9/14541
摘要： In a SAW device comprising a piezoelectric substrate and at least one set of metallic electrodes formed on the piezoelectric substrate, at least one set of the electrodes have a laminated structure comprised of a layer of an aluminum film added with an impurity at a concentration of 6 wt. % or less and another layer of a film of pure aluminum or aluminum added with an impurity at a concentration of 0.4 wt. % or less. The SAW device having the laminated structure of electrodes can handle high frequency electric signals of higher power and/or larger amplitudes.
摘要翻译：在包括压电基板和形成在压电基板上的至少一组金属电极的SAW器件中，至少一组电极具有层叠结构，该叠层结构由添加有浓度为6的杂质的铝膜层重量％以下的另一层，添加浓度为0.4重量％的杂质的纯铝或铝的另一层。％或更少。具有电极层叠结构的SAW器件可以处理更高功率和/或更大幅度的高频电信号。

10. 发明授权

US4630112A Descrambling apparatus for a television signal 失效
标题翻译：电视信号解扰装置
公开(公告)号：US4630112A
公开(公告)日：1986-12-16
申请号：US553237
申请日：1983-11-18
申请人： Jun Yamada , Takeshi Murakami , Akitsuna Yuhara , Norio Hosaka , Yuji Fujita
发明人： Jun Yamada , Takeshi Murakami , Akitsuna Yuhara , Norio Hosaka , Yuji Fujita
IPC分类号： H04N7/167 , H04N7/171 , H04N7/16 , H04K1/00
CPC分类号： H04N7/1675 , H04N7/1713
摘要： In an apparatus for descrambling a scrambled television signal, an elastic surface wave filter is used. This elastic surface wave filter has an interdigital electrode having an electrode pattern similar to at least portion of the waveforms of a luminance signal section of the scrambled television signal to be input. The elastic surface wave filter generates a response pulse only when the waveforms which are analogous to the electrode pattern of the interdigital electrode of the scrambled television signal were input, thereby descrambling the television signal using this response pulse.
摘要翻译：在对加扰电视信号进行解扰的装置中，使用弹性面波滤波器。该弹性表面波滤波器具有交叉指状电极，其具有与要输入的加扰电视信号的亮度信号部分的波形的至少一部分类似的电极图案。弹性表面波滤波器仅在与加扰电视信号的叉指电极的电极图案类似的波形被输入时产生响应脉冲，从而使用该响应脉冲来解扰电视信号。

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