公开(公告)号：US09294143B1

公开(公告)日：2016-03-22

申请号：US14303962

申请日：2014-06-13

Applicant: L-3 Communications Corp.

Inventor： Kyle D. Holzer

IPC: H04B1/44 ,  H04B1/48

CPC classification number: H04B1/525

Abstract: A circuit card can include a circulator for routing a signal from a first amplifier to an antenna and for routing a signal from the antenna to a second amplifier, replacing a traditional transfer switch. The circulator can be a surface mount element to enable the circulator, first amplifier, and second amplifier to be mounted on the same circuit card thereby minimizing the size of a transceiver that employs the circuit card. Multiple circulators can be included on the same circuit card to allow for multi-band operation.

Abstract translation: 电路卡可以包括用于将信号从第一放大器路由到天线的环行器，并且用于将来自天线的信号路由到第二放大器，替换传统的转换开关。 循环器可以是表面安装元件，以使循环器，第一放大器和第二放大器能够安装在相同的电路卡上，从而使采用电路卡的收发器的尺寸最小化。 多个循环器可以包含在同一个电路卡上，以允许多频段操作。

公开(公告)号：US09219600B1

公开(公告)日：2015-12-22

申请号：US14631506

申请日：2015-02-25

Applicant: L-3 Communications Corp.

Inventor： David G. Landon ,  David S. Nelson ,  Robert L. Dickson ,  Brian G. Yoho ,  Carl Christensen

IPC: H04L7/033 ,  H04L7/00

CPC classification number: H04L7/0331 ,  H04L7/0016 ,  H04L7/0029 ,  H04L7/042 ,  H04L7/10

Abstract: Detecting timing of a synchronization sequence included in a data stream transmitted in a noisy channel. The synchronization sequence is a known data sequence purposely injected into the data stream for synchronization. A data stream waveform, is obtained from a noisy communication channel. The data stream waveform includes an instance of a synchronization sequence waveform. One or more samples of the synchronization sequence waveform are obtained. One or more samples of a model synchronization sequence waveform are obtained. The model synchronization sequence waveform models an expected waveform for the synchronization sequence being transmitted on the communication channel by applying the synchronization sequence to a model of the communication channel. The instance of the synchronization sequence waveform is correlated with the model synchronization sequence waveform by correlating one or more samples of the synchronization sequence waveform with the one or more samples of the model synchronization sequence waveform.

Abstract translation: 检测在噪声信道中发送的数据流中包括的同步序列的定时。 同步序列是有意地注入到数据流中以用于同步的已知数据序列。 从噪声通信信道获得数据流波形。 数据流波形包括同步序列波形的实例。 获得同步序列波形的一个或多个样本。 获得模型同步序列波形的一个或多个样本。 模型同步序列波形通过将同步序列应用于通信信道的模型，来模拟在通信信道上发送的同步序列的预期波形。 通过将同步序列波形的一个或多个样本与模型同步序列波形的一个或多个样本相关联，同步序列波形的实例与模型同步序列波形相关。

公开(公告)号：US09191252B1

公开(公告)日：2015-11-17

申请号：US13780154

申请日：2013-02-28

Applicant: L-3 Communications Corp.

Inventor： Radivoje Zarubica ,  Thomas R. Giallorenzi ,  Samuel C. Kingston ,  Loran A. Simper ,  David G. Landon

IPC: H04J3/16 ,  H04L27/00

CPC classification number: H04L27/0008 ,  H04L1/007 ,  H04L1/0083 ,  H04L27/0014 ,  H04W12/02 ,  H04W28/18

Abstract: A system in which a sending node sends modulated waveform signals to a receiving mode can include the capability to change the waveform type of the modulated waveforms from a current waveform type to a new waveform type. The sending node can generate and send to the receiving node a variable length header that provides the receiving node sufficient information for the receiving node to demodulate modulated waveform signals modulated in accordance with the new waveform type. The variable length header can identify the parameters in a parameter set defining the new waveform type that have different values as compared to the current waveform type.

Abstract translation: 发送节点将调制波形信号发送到接收模式的系统可以包括将调制波形的波形类型从当前波形类型改变为新的波形类型的能力。 发送节点可以生成并向接收节点发送可变长度报头，该可变长度报头为接收节点提供足够的信息，用于接收节点对根据新波形类型调制的调制波形信号进行解调。 可变长度头可以识别与当前波形类型相比具有不同值的定义新波形类型的参数集中的参数。

公开(公告)号：US09110034B1

公开(公告)日：2015-08-18

申请号：US14485929

申请日：2014-09-15

Applicant: L-3 Communications Corporation, Warrior Systems Division

Inventor： Brian W. Cranton ,  Peter D. Braudis ,  Mark A. Blais

IPC: G01D18/00 ,  G01N21/88

CPC classification number: G01T1/1645 ,  G01J5/522 ,  G01N21/8806 ,  H04N5/33 ,  H04N17/002

Abstract: Night vision devices utilize image intensifier tubes to see in low light conditions. A man-portable tester allows an operator to check for defects and determine the image resolution of the image intensifier tube quickly and easily without a power source or a darkened room.

Abstract translation: 夜视设备利用图像增强管来在低光条件下观察。 便携式测试仪允许操作者在没有电源或暗室的情况下快速而容易地检查缺陷并确定图像增强管的图像分辨率。

公开(公告)号：US08964906B1

公开(公告)日：2015-02-24

申请号：US13646313

申请日：2012-10-05

Applicant: L-3 Communications Corp.

Inventor： David J. Moore ,  Teren G. Jameson ,  Dan M. Griffin

IPC: H04L27/06

CPC classification number: G06F9/3001 ,  G06F9/3895

Abstract: A digital signal processing (DSP) apparatus is used for processing a plurality of different signals. The DSP apparatus includes a DSP module configured to perform a DSP algorithm on samples of the signals. The DSP apparatus also has a parameter memory that includes a plurality of memory cells. The parameter memory has a signal number input and a parameter output. The parameter output is connected to the DSP module. The parameter memory is configured to output to the parameter output a parameter corresponding to a signal identifier at the signal number input.

Abstract translation: 数字信号处理（DSP）装置用于处理多个不同的信号。 DSP装置包括被配置为对信号样本执行DSP算法的DSP模块。 DSP装置还具有包括多个存储单元的参数存储器。 参数存储器具有信号编号输入和参数输出。 参数输出连接到DSP模块。 参数存储器被配置为向参数输出输出对应于信号号输入处的信号标识符的参数。

公开(公告)号：US08963791B1

公开(公告)日：2015-02-24

申请号：US13628473

申请日：2012-09-27

Applicant: L-3 Communications Corp.

Inventor： Richard G. Edwards ,  Rory K. Sorensen ,  Joseph M. Baird

IPC: H01Q13/00

CPC classification number: H01Q5/47 ,  H01Q13/0216 ,  H01Q19/13

Abstract: A radio frequency (RF) horn can include an interior surface with an inner geometry comprising irregular, aperiodic corrugations and/or undulations. The pattern of the inner geometry can excite higher order modes simultaneously in two RF signals each at a different frequency that combine with fundamental modes of the signals to produce substantially Gaussian profiles of the two signals at the output aperture of the horn. Even though the signals are at different frequencies, the illumination pattern of both signals on a reflector antenna at which the horn is directed can be substantially the same.

Abstract translation: 射频（RF）喇叭可以包括具有内部几何形状的内表面，其包括不规则的，非周期的波纹和/或起伏。 内部几何的图案可以在两个RF信号中同时激发高阶模式，每个RF信号在与信号的基本模式组合的不同频率处，以在喇叭的输出孔处产生两个信号的基本高斯分布。 即使信号处于不同的频率，喇叭指向的反射器天线上的两个信号的照明图案也可以基本相同。

公开(公告)号：US08765514B1

公开(公告)日：2014-07-01

申请号：US12945011

申请日：2010-11-12

Applicant: Athanasios J. Syllaios ,  Michael F. Taylor ,  Sameer K. Ajmera

Inventor： Athanasios J. Syllaios ,  Michael F. Taylor ,  Sameer K. Ajmera

IPC: H01L21/00

CPC classification number: H01L31/0336 ,  G01J5/20 ,  H01L21/02529 ,  H01L21/02532 ,  H01L21/02573 ,  H01L21/02592 ,  H01L27/14618 ,  H01L27/14649 ,  H01L31/028 ,  H01L31/0376 ,  H01L31/20 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A center region of conductive material/s may be disposed or “sandwiched” between transition regions of relatively lower conductivity materials to provide substantially low defect density interfaces for the sandwiched material. The center region and surrounding transition regions may in turn be disposed or sandwiched between dielectric insulative material to form a sandwiched and transitioned device structure. The center region of such a sandwiched structure may be implemented, for example, as a device layer such as conductive microbolometer layer for a microbolometer detector structure.

Abstract translation: 可以将导电材料的中心区域设置或“夹在”相对低导电性材料的过渡区域之间，以为夹层材料提供基本上低的缺陷密度界面。 中心区域和周围的过渡区域又可以设置或夹在介电绝缘材料之间，以形成夹层和转变的器件结构。 这种夹层结构的中心区域可以实现为例如用于微测热计检测器结构的诸如导电微测热计层的器件层。

公开(公告)号：US08456374B1

公开(公告)日：2013-06-04

申请号：US12589770

申请日：2009-10-28

Applicant: Zachary C. Bagley ,  Marc J. Russon ,  David G. Landon

Inventor： Zachary C. Bagley ,  Marc J. Russon ,  David G. Landon

IPC: H01Q21/10 ,  H01Q9/28

CPC classification number: H01Q9/28 ,  H01Q21/062

Abstract: In one exemplary embodiment, an antenna arrangement includes: a substrate; and a plurality of dipole antenna elements disposed on the substrate, wherein the plurality of dipole antenna elements are randomly-oriented with respect to each other. In further exemplary embodiments, the plurality of dipole antenna elements includes at least six dipoles that are all electrically fed and do not need to be magnetically fed in order to generate and detect an arbitrary polarization. In still further exemplary embodiments, each dipole element has a fractal shape.

Abstract translation: 在一个示例性实施例中，天线装置包括：基板; 以及设置在基板上的多个偶极天线元件，其中所述多个偶极天线元件相对于彼此随机取向。 在另外的示例性实施例中，多个偶极子天线元件包括至少六个偶极子，其全部是电馈电的，并且不需要被磁性馈送以产生和检测任意偏振。 在另外的示例性实施例中，每个偶极子元件具有分形形状。

公开(公告)号：US08401108B1

公开(公告)日：2013-03-19

申请号：US12209144

申请日：2008-09-11

Applicant: Osama S. Haddadin ,  William McIntire

Inventor： Osama S. Haddadin ,  William McIntire

IPC: H04L27/00

CPC classification number: H03C1/00 ,  H03C3/403 ,  H03D1/00 ,  H03D3/006 ,  H03D2200/006

Abstract: Techniques for modulation and demodulation using near-Nyquist sampling operate using substantially band-limited signal. In modulating, the substantially band-limited signal is formed by filtering modulated symbol date to produce a complex sample stream having a bandwidth of less than the twice the associated symbol transmission rate and with a sample rate of less than twice the symbol rate. In demodulating, a substantially band-limited signal having a bandwidth of less than twice the associated symbol transmission rate is sampled at a sample rate of less than twice the symbol rate of the modulation.

Abstract translation: 使用近奈奎斯特采样的调制和解调技术使用基本的带限信号进行操作。 在调制中，通过对调制符号日期进行滤波来形成基本上带宽限制的信号，以产生具有小于相关符号传输速率两倍的带宽并且具有小于符号率两倍的采样率的复杂采样流。 在解调中，具有小于相关符号传输速率两倍的带宽的基本上带宽限制的信号以小于调制符号速率的两倍的采样率进行采样。

公开(公告)号：US08391334B1

公开(公告)日：2013-03-05

申请号：US12891048

申请日：2010-09-27

Applicant: Vaughn L. Mower ,  Merle L. Keller ,  Roger Baker

Inventor： Vaughn L. Mower ,  Merle L. Keller ,  Roger Baker

IPC: H04B1/00 ,  H04W72/00

CPC classification number: H04B7/04 ,  H04B7/10

Abstract: Systems and methods for improving the reliability of a hub-spoke communications system use a first antenna and a second antenna at the hub terminal. Spread spectrum transmission from the hub terminal uses the first antenna, and the second antenna is enabled when blockage between the first antenna and any one of the spoke terminals is present. The first antenna and the second antenna have substantially orthogonal polarizations. The spread spectrum transmissions from the first antenna and second antenna have different pseudonoise code timing so that the received transmissions are offset by at least one chip interval from each other.

Abstract translation: 用于提高集线器辐条通信系统的可靠性的系统和方法在集线器终端处使用第一天线和第二天线。 来自集线器终端的扩频传输使用第一天线，并且当存在第一天线和任何一个辐条终端之间的阻塞时，使能第二天线。 第一天线和第二天线具有基本正交的极化。 来自第一天线和第二天线的扩展频谱传输具有不同的伪噪声码定时，使得所接收的传输彼此相隔至少一个码片间隔。