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1. 发明授权

US5914553A Multistable tunable micromechanical resonators 失效
标题翻译：多功能可调谐微机械谐振器
公开(公告)号：US5914553A
公开(公告)日：1999-06-22
申请号：US915648
申请日：1997-08-21
申请人： Scott G. Adams , Yongmei Cindy Wang , Noel C. Macdonald , James S. Thorp
发明人： Scott G. Adams , Yongmei Cindy Wang , Noel C. Macdonald , James S. Thorp
IPC分类号： B81B3/00 , G01P1/00 , G01P15/08 , G01P15/125 , G01P15/135 , H02N1/00
CPC分类号： H02N1/008 , G01P1/006 , G01P15/0891 , G01P15/125 , G01P15/135 , H03H9/02409 , H03H9/02448 , G01P2015/0814
摘要： A multistable tunable electromicromechanical resonator structure incorporates electrostatic actuators which permit modification of the resonant frequency of the structure. The actuators consist of sets of opposed electrode fingers, each set having a multiplicity of spaced, parallel fingers. One set is mounted on a movable portion of the resonator structure and one set is mounted on an adjacent fixed base or substrate, with the fingers in opposed relationship and their adjacent ends spaced apart by a gap. An adjustable bias voltage across the sets of electrodes adjusts the resonant frequency of the movable structure and shifts the structure to a bistable state. Application of an alternating drive signal drives the structure to chaotic oscillation.
摘要翻译：多可调谐的机电谐振器结构包括允许修改结构的谐振频率的静电致动器。致动器由一组相对的电极指组成，每组具有多个间隔开的平行指状物。一组安装在谐振器结构的可移动部分上，一组安装在相邻的固定基座或基板上，手指具有相对的关系，并且其相邻端部间隔开间隔。两组电极之间的可调偏压调节可移动结构的谐振频率，并将结构转移到双稳态。交替驱动信号的应用将结构驱动到混沌振荡。

2. 发明授权

US6104703A Communication systems and methods employing receivers with estimators 失效
标题翻译：采用具有估计器的接收机的通信系统和方法
公开(公告)号：US6104703A
公开(公告)日：2000-08-15
申请号：US770115
申请日：1996-12-20
申请人： Donald J. Sobiski , James S. Thorp
发明人： Donald J. Sobiski , James S. Thorp
IPC分类号： H04L27/00 , H04L9/12
CPC分类号： H04L27/001
摘要： Communications systems and methods employ receivers which utilize estimators, such as extended Kalman filters, to estimate a transmitted information signal based only upon initial parameters in a transmitter and a single transmitted state of the transmitter. This arrangement facilitates the use of inherently secure chaotic modulation schemes in the transmitter. In one embodiment, one or more parameters of nonlinear transmitter elements are modulated with one or more information signals to generate a chaotically varying transmission signal. A communication scheme known as Parameter Division Multiple Access (PDMA) is thus created in which multiple information signals from multiple transmitters can be combined and transmitted to corresponding multiple receivers in a single transmission signal. A special Kalman filter known as a feedback Kalman filter is employed for separating each receiver's corresponding portion of the transmitted signal.
摘要翻译：通信系统和方法使用利用估计器（例如扩展卡尔曼滤波器）的接收机来仅基于发射机中的初始参数和发射机的单个传输状态来估计传输的信息信号。这种布置有助于在发射机中使用固有的安全混沌调制方案。在一个实施例中，用一个或多个信息信号调制非线性发射机元件的一个或多个参数，以产生混沌变化的传输信号。因此，创建了称为参数分多址（PDMA）的通信方式，其中来自多个发射机的多个信息信号可以组合并在单个传输信号中发送到对应的多个接收机。被称为反馈卡尔曼滤波器的特殊卡尔曼滤波器用于分离发射信号的每个接收机的相应部分。

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