公开(公告)号：US20030117216A1

公开(公告)日：2003-06-26

申请号：US10309172

申请日：2002-12-04

Applicant: ALCATEL

Inventor： Jean-Francois Villemazet ,  Pascal Moroni ,  Bernard Cogo

IPC: H03F001/26

CPC classification number: H03F1/3252 ,  H03F3/602 ,  H03F2200/198

Abstract: The invention relates to a predistorsion linearizer for a power amplifier operating in the microwave range, the linearizer comprising means for conferring gain and phase predistorsion which compensate the gain and phase non-linearities of the corresponding amplifier, in particular an amplifier of the electronic tube type. The linearizer is characterized in that it comprises: a nulllinearnull first path comprising a Lange coupler having each of its two accesses grounded via a respective passive element, and a nullnon-linearnull second path comprising a Lange coupler having each of its two accesses grounded via a respective active element, the addition of a transmission line of variable length in at least one of the two paths enabling the (non-constant) frequency response of the linearizer to be adjusted in order to compensate the response of the amplifier that is to be linearized.

Abstract translation: 本发明涉及一种用于在微波范围内工作的功率放大器的前置放大线性化装置，该线性化装置包括用于赋予相应放大器的增益和相位非线性的增益和相位预定电压的装置，特别是电子管型放大器 。 线性化器的特征在于它包括：包括一个“线性”第一路径，其包括一个Lange耦合器，其两个通路中的每一个通过相应的无源元件接地;以及“非线性”第二路径，包括一个Lange耦合器， 访问通过相应的有源元件接地，在两个路径中的至少一个路径中添加可变长度的传输线，使得能够调整线性化器的（非常数）频率响应，以补偿放大器的响应 要线性化。

公开(公告)号：US20010046849A1

公开(公告)日：2001-11-29

申请号：US09863312

申请日：2001-05-24

Applicant: ALCATEL

Inventor： Jean-Francois Villemazet ,  Eric Rogeaux

IPC: H04B001/26

CPC classification number: H03D7/1441 ,  H03D7/1458 ,  H03D2200/0013 ,  H03D2200/0015

Abstract: A double-balanced mixer for high-frequency signals includes a quad of four cold transistors in an in-line configuration, to the center of which a signal RF to be processed is fed and to each end of which a signal RF/2 whose phase relative to the signal RF is 180null is applied, and 180null couplers at the quad input and output. The mixer is designed to be implemented in the MMIC technology and to operate in the L, S, C, X or Ku band.

Abstract translation: 用于高频信号的双平衡混频器包括四个串联配置的冷晶体管，其中心处理要处理的信号RF，并且其每端的信号RF / 2的相位 相对于信号的RF为180°，180°耦合器在四路输入和输出。 该混频器被设计为在MMIC技术中实现并在L，S，C，X或Ku频带中工作。