公开(公告)号：US20130069695A1

公开(公告)日：2013-03-21

申请号：US13676011

申请日：2012-11-13

Applicant: Comtech EF Data Corp.

Inventor： Cris Mamaril ,  Tiberiu Artzi ,  Terry Richmond

IPC: H03B28/00

CPC classification number: H03B28/00

Abstract: A system for generating a frequency reference signal comprising an oscillator, a direct digital synthesizer coupled to the oscillator and configured to receive a signal output from the oscillator, a digital to analog converter coupled to the direct digital synthesizer and configured to receive a sampled signal from the direct digital synthesizer and to convert the sampled signal to an analog waveform, and a bandpass filter coupled to the digital to analog converter and configured to select an aliased output signal from the digital to analog converter at a Nyquist zone other than a first Nyquist zone and to output the frequency reference signal.

Abstract translation: 一种用于产生频率参考信号的系统，包括振荡器，耦合到振荡器并被配置为接收从振荡器输出的信号的直接数字合成器，耦合到直接数字合成器的数模转换器，并且被配置为从 所述直接数字合成器并将所述采样信号转换为模拟波形，以及耦合到所述数模转换器的带通滤波器，并且被配置为在除奈奎斯特区以外的奈奎斯特区选择来自所述数模转换器的混叠输出信号 并输出频率参考信号。

公开(公告)号：US20140177520A1

公开(公告)日：2014-06-26

申请号：US14193361

申请日：2014-02-28

Applicant: Comtech EF Data Corp.

Inventor： Wallace Davis ,  Tiberiu Artzi ,  Michael Beeler

IPC: H04B10/118 ,  H04L25/20

CPC classification number: H04B10/118 ,  H04B7/18517 ,  H04B7/2041 ,  H04L25/20

Abstract: A method of creating a pseudo hemispherical beam using a plurality of individual spot beams comprising receiving by a single router or packet processor, user data from a plurality of users, processing the user data by the single router or packet processor using a QoS logic such that a single output comprising a plurality of queues of data results, each queue of data comprising data designated for transmission only to one or more predetermined remote receivers, modulating the plurality of queues of data received using a multiple-carrier modulator such that a single output comprising a plurality of individual spot beams results, wherein each individual spot beam has a unique center frequency and carrier signal configuration, and transmitting the plurality of individual spot beams to a repeating relay configured to transmit each individual spot beam to the one or more predetermined remote receivers.

Abstract translation: 使用多个单独的点波束来创建伪半球形波束的方法，包括由单个路由器或分组处理器接收来自多个用户的用户数据，使用QoS逻辑由单个路由器或分组处理器处理用户数据，使得 包括多个数据结果队列的单个输出，每个数据队列包括仅被指定用于仅传送到一个或多个预定的远程接收器的数据，调制使用多载波调制器接收的多个数据队列，使得包括 导致多个单独的点波束，其中每个单独的点波束具有唯一的中心频率和载波信号配置，并且将多个单独的点波束发射到被配置为将每个单独的点波束传送到一个或多个预定的远程接收器的重复中继器 。

公开(公告)号：US08686800B2

公开(公告)日：2014-04-01

申请号：US13676011

申请日：2012-11-13

Applicant: Comtech EF Data Corp.

Inventor： Cris Mamaril ,  Tiberiu Artzi ,  Terry Richmond

IPC: H03B1/00

CPC classification number: H03B28/00

Abstract: A system for generating a frequency reference signal comprising an oscillator, a direct digital synthesizer coupled to the oscillator and configured to receive a signal output from the oscillator, a digital to analog converter coupled to the direct digital synthesizer and configured to receive a sampled signal from the direct digital synthesizer and to convert the sampled signal to an analog waveform, and a bandpass filter coupled to the digital to analog converter and configured to select an aliased output signal from the digital to analog converter at a Nyquist zone other than a first Nyquist zone and to output the frequency reference signal.

Abstract translation: 一种用于产生频率参考信号的系统，包括振荡器，耦合到振荡器并被配置为接收从振荡器输出的信号的直接数字合成器，耦合到直接数字合成器的数模转换器，并且被配置为从 所述直接数字合成器并将所述采样信号转换为模拟波形，以及耦合到所述数模转换器的带通滤波器，并且被配置为在除奈奎斯特区以外的奈奎斯特区选择来自所述数模转换器的混叠输出信号 并输出频率参考信号。