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1. 发明授权

US06236344B1 AC and DC bipolar voltage source using quantized pulses 有权
标题翻译：交流和直流双极电压源使用量化脉冲
公开(公告)号：US06236344B1
公开(公告)日：2001-05-22
申请号：US09347245
申请日：1999-07-02
申请人： Samuel P. Benz , Clark A. Hamilton , Charles J. Burroughs , Todd E. Harvey
发明人： Samuel P. Benz , Clark A. Hamilton , Charles J. Burroughs , Todd E. Harvey
IPC分类号： H03M100
CPC分类号： H03B28/00 , H03M1/822
摘要： A Josephson quantizer is driven by a sinusoidal microwave generator whose output is combined with a digital two-level code representing a desired waveform. The result is to produce a bipolar drive signal of increased frequency and a bipolar Josephson output with voltage increased significantly. Output voltage is developed according to the relationship V=Nnmfs/KJ, where N is the number of junctions, n is the Josephson junction constant voltage step number, fs is the sampling frequency, m is an integer multiple of the sampling frequency and is ≧2, and KJ is the Josephson constant. The digital code generator receives the output of an improved modulator which incorporates a three-level to two-level transformation on the output of a standard three-level modulator in one embodiment. In a second embodiment, a modified two-level modulator produces a bit sequence where the polarity of the next bit is allowed to change only if there is an odd number of consecutive bits of the same polarity.
摘要翻译：约瑟夫森量子化器由正弦微波发生器驱动，其输出与表示期望波形的数字二电平代码组合。结果是产生频率增加的双极驱动信号和双极约瑟夫逊输出，其电压显着增加。根据V = Nnmfs / KJ的关系，产生输出电压，其中N是结点数，n是约瑟夫逊结恒压步长数，fs是采样频率，m是采样频率的整数倍，> = 2，KJ是约瑟夫森常数。在一个实施例中，数字代码发生器接收改进的调制器的输出，该调制器在标准三电平调制器的输出上包含三电平到两电平变换。在第二实施例中，修改的二电平调制器产生一个位序列，只有当存在相同极性的奇数个连续位时，允许下一位的极性改变。

2. 发明授权

US5114912A Two-dimensional, Josephson-array, voltage-tunable, high-frequency oscillator 失效
标题翻译：二维，约瑟夫逊阵列，电压可调谐，高频振荡器
公开(公告)号：US5114912A
公开(公告)日：1992-05-19
申请号：US699282
申请日：1991-05-13
申请人： Samuel P. Benz
发明人： Samuel P. Benz
IPC分类号： H01L27/18 , H03B15/00
CPC分类号： H03B15/003 , H01L27/18 , H03B2200/0022 , Y10S505/702 , Y10S505/854
摘要： A two-dimensional array of Josephson junctions is used as a high-frequency oscillator capable of emitting coherent power of predetermined frequencies since the geometry of the two-dimensional array allows the individual Josephson junctions to phase lock at predetermined frequencies. The array is controlled at a given voltage and excited by the application of DC current through the array, in effect providing a rapidly tunable DC-to-AC converter at GHz and THz frequencies. The oscillator operates without the application of external high frequency signals or a connection to a cavity resonator. Load matching and other adjustments can be made by selecting the appropriate number of Josephson junctions in the array, selecting a damping factor which determines non-hysteretic operation, adding resistive shunts or a superconducting ground plane. The two-dimensional array used as an oscillator has advantages over one dimensional arrays in that voltage equalization from junction-to-junction occurs naturally so that phase locking is less likely to be affected by non-identical junctions, greater power output can be realized, an output having a narrower line width is produced and impedance matching is relatively easy.
摘要翻译：使用约瑟夫逊结的二维阵列作为能够发射预定频率的相干功率的高频振荡器，因为二维阵列的几何形状允许各个约瑟夫逊结以预定频率锁相。该阵列被控制在给定的电压并且通过施加直流电流通过阵列而被激励，实际上提供了在GHz和THz频率下的快速可调DC-AC转换器。振荡器在不施加外部高频信号或连接到空腔谐振器的情况下工作。可以通过选择阵列中适当数量的约瑟夫逊结，选择确定非迟滞操作的阻尼因子，添加电阻分流器或超导接地平面来进行负载匹配和其他调整。用作振荡器的二维阵列具有超过一维阵列的优点，因为从结到结的电压均衡自然发生，使得相位锁定不太可能受到不相同的结的影响，可以实现更大的功率输出，产生具有较窄线宽的输出，并且阻抗匹配相对容易。

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