公开(公告)号：US5136193A

公开(公告)日：1992-08-04

申请号：US668657

申请日：1991-03-13

申请人： Michel Pouysegur ,  Thierry Parra ,  Michel Gayral ,  Jacques Graffeuil ,  Jean-Francois Sautereau

发明人： Michel Pouysegur ,  Thierry Parra ,  Michel Gayral ,  Jacques Graffeuil ,  Jean-Francois Sautereau

IPC分类号： H03G11/00

CPC分类号： H03G11/006

摘要： A limiter circuit having a field effect transistor whose bias circuit is constituted by two constant voltage feeds: one for its gate and the other for its drain, with a resistive load being connected in series with the feed to the gate of the transistor. The invention is particularly applicable to space telecommunications.

摘要翻译： 一种具有场效应晶体管的限幅电路，其偏置电路由两个恒定电压馈电构成，一个用于栅极，另一个用于漏极，电阻负载与晶体管栅极的馈电串联连接。 本发明特别适用于空间通信。

公开(公告)号：US20110260757A1

公开(公告)日：2011-10-27

申请号：US13122889

申请日：2009-10-06

申请人： Andreia Cathelin ,  Stéphane Thuries ,  Sylvain Godet ,  Eric Tournier ,  Jacques Graffeuil

发明人： Andreia Cathelin ,  Stéphane Thuries ,  Sylvain Godet ,  Eric Tournier ,  Jacques Graffeuil

IPC分类号： H03B21/00

CPC分类号： H04B1/7174

摘要： System for generating a pulsed signal of the ultra wideband type, comprising a device for direct digital frequency synthesis (DDS) comprising a phase accumulator (ACCP) able to deliver at a first frequency (Fclk) phases coded on i bits and spaced apart by a phase increment (Δp) differing by a power of two and situated in the vicinity of 2i−1, processing means (MT) able to receive said phases and arranged so as to deliver an amplitude-modulated output signal (SG) whose envelope exhibits a succession of regions respectively delimited by zones of zero amplitude (ZA, ZB), each amplitude-modulated signal part situated in one of said regions forming a pulse of the ultra wideband type (IMP) whose central frequency is equal to said first frequency and whose width depends on the value of the phase increment, and control means (MC) able to regulate the operation of the digital synthesis device so as to selectively deliver one or more pulses of the ultra wideband type.

摘要翻译： 用于产生超宽带类型的脉冲信号的系统，包括用于直接数字频率合成（DDS）的装置，其包括相位累加器（ACCP），所述相位累加器能够以在i比特上编码的第一频率（Fclk）相位传送，并由 相位增量（＆Dgr; p）与2i-1附近的功率不同，处理装置（MT）能够接收所述相位并被布置成传送调幅输出信号（SG），其信封 呈现分别由零幅度区域（ZA，ZB）界定的区域的一系列区域，每个幅度调制信号部分位于所述区域之一中，形成超宽带类型（IMP）的脉冲，其中心频率等于所述第一频率 并且其宽度取决于相位增量的值，以及能够调节数字合成装置的操作以便选择性地传送超宽带类型的一个或多个脉冲的控制装置（MC）。

公开(公告)号：US08483630B2

公开(公告)日：2013-07-09

申请号：US13122889

申请日：2009-10-06

申请人： Andrea Cathelin ,  Stéphane Thuries ,  Sylvain Godet ,  Eric Tournier ,  Jacques Graffeuil

发明人： Andrea Cathelin ,  Stéphane Thuries ,  Sylvain Godet ,  Eric Tournier ,  Jacques Graffeuil

IPC分类号： H03C1/52

CPC分类号： H04B1/7174

摘要： System for generating a pulsed signal of the ultra wideband type, comprising a device for direct digital frequency synthesis (DDS) comprising a phase accumulator (ACCP) able to deliver at a first frequency (Fclk) phases coded on i bits and spaced apart by a phase increment (Δp) differing by a power of two and situated in the vicinity of 2i-1, processing means (MT) able to receive said phases and arranged so as to deliver an amplitude-modulated output signal (SG) whose envelope exhibits a succession of regions respectively delimited by zones of zero amplitude (ZA, ZB), each amplitude-modulated signal part situated in one of said regions forming a pulse of the ultra wideband type (IMP) whose central frequency is equal to said first frequency and whose width depends on the value of the phase increment, and control means (MC) able to regulate the operation of the digital synthesis device so as to selectively deliver one or more pulses of the ultra wideband type.

摘要翻译： 用于产生超宽带类型的脉冲信号的系统，包括用于直接数字频率合成（DDS）的装置，其包括相位累加器（ACCP），所述相位累加器能够以在i比特上编码的第一频率（Fclk）相位传送，并由 相位增量（Deltap），其功率为2并位于2i-1附近，处理装置（MT）能够接收所述相位并被布置成传送调幅输出信号（SG），其幅度为 分别由零幅度区域（ZA，ZB）限定的区域的连续区域，位于所述区域之一中的每个幅度调制信号部分形成中心频率等于所述第一频率的超宽带类型（IMP）的脉冲， 宽度取决于相位增量的值，以及能够调节数字合成装置的操作以便选择性地传送超宽带类型的一个或多个脉冲的控制装置（MC）。