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    • 21. 发明授权
    • Superconductor mixer and phase control method therefor
    • 超导体混合器及其相位控制方法
    • US5920811A
    • 1999-07-06
    • US876244
    • 1997-06-16
    • Katsumi SuzukiYouichi EnomotoShoji Tanaka
    • Katsumi SuzukiYouichi EnomotoShoji Tanaka
    • H01L39/22H03D7/12H04B1/28H04B1/26
    • H04B1/28H03D7/005
    • In a superconductor mixer, a non-linear element is provided on a substrate. The non-linear element comprises at least one Josephson junction connected in series. An antenna pattern of superconductor, an intermediate frequency output pattern of superconductor, and a bias current pattern of superconductor are connected to the non-linear element. A signal high frequency wave (RF) and a local reference frequency wave (LO) are received by the antenna pattern and then absorbed in the non-linear element to obtain an intermediate frequency (IF) signal. Then, with applying a current to the series connected Josephson junction in the non-linear element from the bias current pattern, the intermediate frequency (IF) signal as a frequency signal of a difference between the signal high frequency wave (RF) and the local reference frequency wave (LO) is output to the intermediate frequency output pattern. At this time, by varying the current supplied from the bias current pattern, a phase of the output intermediate frequency (IF) signal is varied.
    • 在超导体混合器中,在衬底上提供非线性元件。 非线性元件包括至少一个串联连接的约瑟夫逊结。 超导体的天线图案,超导体的中频输出图案和超导体的偏置电流图案被连接到非线性元件。 信号高频(RF)和局部参考频率波(LO)由天线方向接收,然后被吸收在非线性元件中以获得中频(IF)信号。 然后,通过从偏置电流模式向非线性元件中的串联连接的约瑟夫逊结施加电流,将中频(IF)信号作为信号高频波(RF)与本地 参考频率波(LO)被输出到中频输出模式。 此时,通过改变从偏置电流模式提供的电流,改变输出中频(IF)信号的相位。
    • 24. 发明授权
    • High frequency band high temperature superconductor mixer antenna which
allows a superconductor feed line to be used in a low frequency region
    • 高频高温超导体混频器天线,允许在低频区域使用超导体馈线
    • US5812943A
    • 1998-09-22
    • US706800
    • 1996-09-03
    • Katsumi SuzukiYouichi EnomotoShoji Tanaka
    • Katsumi SuzukiYouichi EnomotoShoji Tanaka
    • H01L39/22H01Q1/24H01Q1/36H01Q13/08H01Q21/00H04B1/18H04B1/26
    • H01Q1/247H01Q1/364
    • The invention provides a wide frequency band high temperature superconductor mixer antenna which allows a superconductor feed line, which exhibits a high resistance loss in a high frequency region, to be used in a low frequency region with a low loss and which is provided with a same structure as a mixer which has a wide band twice or more the frequency of a millimeter or more wave while keeping a characteristic of a high integration array antenna, which makes most of the high integrity of superconductor feed lines. The wide frequency band high temperature superconductor mixer antenna includes one or a plurality of planar structure antenna patterns of the log-periodical type or the log-spiral type and a plurality of oxide superconductor thin film feed line wiring patterns formed on a same face of a main surface of a substrate, a central portion of each of the planar structure antenna patterns being formed from an oxide superconductor thin film on which a non-linear element part is provided.
    • 本发明提供了一种宽带高温超导体混频器天线,其允许在高频区域表现出高电阻损耗的超导体馈电线用于具有低损耗的低频区域并且具有相同的 结构作为混频器,其具有两倍或更多的毫米波或更多波的频率,同时保持高集成阵列天线的特性,这使得超导体馈线的大部分高度完整性。 宽频带高温超导体混频器天线包括对数周期型或对数螺旋型的一个或多个平面结构天线图案,以及形成在同一面上的多个氧化物超导体薄膜馈送线布线图案 基板的主表面,每个平面结构天线图案的中心部分由其上设置有非线性元件部分的氧化物超导薄膜形成。
    • 26. 发明授权
    • Method of retaining melt of oxide
    • 保留氧化物熔体的方法
    • US5632811A
    • 1997-05-27
    • US420519
    • 1995-04-12
    • Yasuo NamikawaYasuji YamadaSatoshi KoyamaYuh ShioharaShoji Tanaka
    • Yasuo NamikawaYasuji YamadaSatoshi KoyamaYuh ShioharaShoji Tanaka
    • C30B9/00C30B15/00C30B15/12C30B29/22H01B13/00H01L21/208C30B29/16
    • C30B29/225C30B15/12C30B9/00
    • In order to stably retain an oxide-based melt consisting essentially of yttrium or a lanthanoid element, barium, copper and oxygen at a prescribed temperature with no impurity contamination thereby preparing a large oxide crystal of high quality from the melt, an oxide melt consisting essentially of yttrium or a lanthanoid element, barium, copper and oxygen is stored in a first crucible, which in turn is held in a second crucible. The first crucible is made of a material which is an oxide of at least one element forming the melt having a melting point higher by at least 10.degree. C. than a melt retention temperature and causing no structural phase transition up to a temperature higher by 10.degree. C. than the aforementioned prescribed temperature, with solubility of not more than 5 atomic percent with respect to the melt in a temperature range from the room temperature to a temperature higher by 10.degree. C. than the melt retention temperature. The second crucible is made of a material substantially causing neither melting nor chemical reaction with respect to the oxide-based melt, which can retain the melt more stably than the first material. Even if the melt overflows the first crucible, this overflow is suppressed by the second crucible. It is possible to prepare a crystal of an oxide superconductor such as YBa.sub.2 Cu.sub.3 O.sub.7-x (0.ltoreq.X.ltoreq.1) by the pulling method from the melt which is stored in the first crucible.
    • 为了稳定地保持基本上由钇或镧系元素,钡,铜和氧组成的氧化物基熔体,在规定的温度下没有杂质污染,从而从熔体制备高质量的大的氧化物晶体,基本上由 的钇或镧系元素,钡,铜和氧储存在第一坩埚中,第一坩埚又保持在第二坩埚中。 第一坩埚由至少一种形成熔体的元素的氧化物的材料制成,其熔点比熔融保持温度高至少10℃,并且不会导致结构相变达到高于10℃的温度 ℃以上的规定温度,相对于熔体,在室温至高于熔融保持温度10℃的温度范围内的溶解度为5原子%以下。 第二坩埚由相对于基于氧化物的熔体基本上不熔化和化学反应的材料制成,其可以比第一材料更稳定地保持熔体。 即使熔体溢出第一坩埚,这种溢流被第二坩埚抑制。 可以通过从存储在第一坩埚中的熔体的拉伸方法制备氧化物超导体的晶体,例如YBa2Cu3O7-x(0≤X1)。
    • 28. 发明授权
    • Mobile communication congestion control system
    • 移动通信拥塞控制系统
    • US5454026A
    • 1995-09-26
    • US43346
    • 1993-04-06
    • Shoji Tanaka
    • Shoji Tanaka
    • H04W36/30H04M11/00
    • H04W36/30
    • A mobile communication system contains a mobile switching center connected to a plurality of base stations constituting a radio service zone and a plurality of mobile stations. The mobile switching center monitors the usage of a traffic channel for each radio service zone and has a usage threshold value for each radio service zone, and informs those to the mobile station via the base station. The busy mobile station compares the traffic channel usage information and the usage threshold value information and the radio zone communicated. When the traffic channel usage is greater than the usage threshold value, the mobile station selects a hand-over radio zone destination based on the received signal strength and quality, and the traffic channel usage information and the usage threshold value information of the adjacent zone, and then transmits a hand-over request designating the hand-over radio zone destination to the mobile switching center.
    • 移动通信系统包括连接到构成无线电服务区和多个移动站的多个基站的移动交换中心。 移动交换中心监控每个无线电业务区的业务信道的使用,并且具有每个无线电业务区的使用阈值,并经由基站通知移动站。 繁忙的移动站比较通信信道使用信息和使用阈值信息以及通信的无线电区域。 当业务信道使用量大于使用阈值时,移动台基于接收到的信号强度和质量以及相邻区域的业务信道使用信息和使用阈值信息来选择切换无线电区域目的地, 然后向移动交换中心发送指定移交无线电区域目的地的切换请求。