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1. 发明授权

US4176356A Directional antenna system including pattern control 失效
标题翻译：定向天线系统包括模式控制
公开(公告)号：US4176356A
公开(公告)日：1979-11-27
申请号：US810234
申请日：1977-06-27
申请人： L. Curtis Foster , Carl E. Lindholm
发明人： L. Curtis Foster , Carl E. Lindholm
IPC分类号： G01S3/38 , H01Q1/32 , H01Q3/26 , H04B7/00
CPC分类号： H01Q1/3275 , G01S3/38 , H01Q3/26
摘要： A directional antenna system is disclosed which selectively couples two radiating antenna elements to a transceiver through a selective phase, magnitude and matching network which is controlled by the output of a logic circuit. The network provides for equal magnitude current coupling between the transceiver and the two antennas while simultaneously selectively producing either positive or negative approximately 90.degree. phase shifts between the two antennas to produce either of two discrete directive cardioid radiation patterns directed in substantially opposite directions. The logic circuit, in conjunction with a manual step switch, provides for a manually selecting either of the two cardioid radiation patterns, as well as producing a figure eight or an omnidirectional radiation pattern. For generating a transceiver omnidirectional pattern, one antenna is used and the other is connected to a standard broadcast band receiver. Matching networks are simultaneously selectively connected between the two antennas and the transceiver such that maximum power transfer and impedance matching is maintained for different radiation patterns. An automatic scanning switch is coupled to the logic circuit and provides for automatically selecting one of the cardioid radiation patterns as an optimum pattern in which the signal from the remote site is most strongly received by the transceiver. Indicating lights are provided to indicate which one of the radiation patterns is generated for the transceiver.
摘要翻译：公开了一种定向天线系统，其通过由逻辑电路的输出控制的选择性相位，幅度和匹配网络选择性地将两个辐射天线元件耦合到收发器。该网络在收发器和两个天线之间提供相等幅度的电流耦合，同时选择性地产生两个天线之间的正或负约90°相移，以产生以基本上相反的方向指向的两个离散指向心形辐射图案。逻辑电路与手动步进开关一起提供手动选择两个心形辐射图中的任一个，以及产生图8或全向辐射图。为了生成收发器全向模式，使用一个天线，另一个连接到标准广播频带接收机。匹配网络同时选择性地连接在两个天线和收发器之间，使得为不同的辐射方向保持最大功率传输和阻抗匹配。自动扫描开关耦合到逻辑电路，并提供自动选择心形辐射图中的一个作为最佳模式，其中来自远程站点的信号被收发器最强烈地接收。提供指示灯以指示为收发器生成哪种辐射图案。

2. 发明授权

US4147424A Radiation discrimination system 失效
标题翻译：辐射鉴别系统
公开(公告)号：US4147424A
公开(公告)日：1979-04-03
申请号：US609994
申请日：1967-01-16
申请人： L. Curtis Foster , John P. Lindley
发明人： L. Curtis Foster , John P. Lindley
IPC分类号： G01J3/26 , G01J9/02 , G01B9/02
CPC分类号： G01J9/02 , G01J3/26
摘要： A system for detecting the presence of coherent radiation comprises an interference filter having a pair of partially-reflective mirrors. The spacing between the mirrors is varied in accordance with a sine function to change the transmission wavelength of the mirrors. A reference signal is developed which represents this periodic variation in the spacing of the mirrors. A photodetector on the output side of the filter detects radiation transmitted therethrough, yielding a detection signal in the presence of coherent radiation transmitted through the filter. An indicator responds to the signal output of the photodetector and to the reference signal to produce an identifying indication of the detected radiation.
摘要翻译：用于检测相干辐射的存在的系统包括具有一对部分反射镜的干涉滤光器。反射镜之间的间隔根据正弦函数而变化，以改变反射镜的透射波长。开发了参考信号，其表示反射镜的间隔中的这种周期性变化。在滤波器的输出侧的光电检测器检测透射的辐射，在存在通过滤光器的相干辐射的情况下产生检测信号。指示器响应于光电检测器的信号输出和参考信号以产生检测到的辐射的识别指示。

3. 发明授权

US5159406A Light-operated accelerometer-type techniques 失效
标题翻译：轻型加速度计型技术
公开(公告)号：US5159406A
公开(公告)日：1992-10-27
申请号：US399730
申请日：1964-09-28
申请人： Robert Adler , L. Curtis Foster
发明人： Robert Adler , L. Curtis Foster
IPC分类号： G01P15/093 , G01S17/02 , G01S17/50
CPC分类号： G01S17/026 , G01P15/093 , G01S17/50
摘要： A laser based accelerometer system uses small motion induced shifts in frequency to measure the motion of an object without contact thereof. This technique is particularly useful for determining the vibratory and velocity characteristics of objects that are otherwise inaccessible for direct motion measurement by contact sensors.
摘要翻译：基于激光的加速度计系统使用小的运动感应频率偏移来测量物体的运动而不与其接触。该技术对于确定由接触传感器进行直接运动测量所不能接近的物体的振动和速度特性特别有用。

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