公开(公告)号：EP0998025A1

公开(公告)日：2000-05-03

申请号：EP98830657.7

申请日：1998-10-30

Applicant: STMicroelectronics S.r.l.

Inventor： Filoramo, Pietro ,  Palmisano, Giuseppe ,  Salerno, Raffaele

IPC: H03D7/14 ,  H03D7/16

CPC classification number: H03D7/165 ,  H03D7/1433 ,  H03D7/145 ,  H03D7/1458 ,  H03D7/18

Abstract: The present invention relates to a low-noise quadrature phase I-Q modulator for applications in radio frequency signal receivers, of the type comprising a pair of Gilbert cell input stages (4, 5) driven by a feed voltage line (Vcc) and receiving in input respective square wave command signals (W LO,I , V LO,Q ) coming from a local oscillator (LO). The modulator comprises a circuital block (2) with transistors (Q1a, Q2a; Q1b, Q2b) connected to each cell (4,5) and destined to carry out a voltage-current conversion of a signal (V RF ) in radio frequency received from the block (2) itself; such block (2) further comprises a single degeneration resistance (R E1 ).

Abstract translation: 本发明涉及用于射频信号接收机的低噪声正交相位IQ调制器，其类型包括由馈电电压线（Vcc）驱动并在输入端接收的一对吉尔伯特单元输入级（4,5） 来自本地振荡器（LO）的各个方波指令信号（WLO，I，VLO，Q）。 调制器包括具有连接到每个单元（4,5）的晶体管（Q1a，Q2a; Q1b，Q2b）的电路块（2），并且目的地在从射频接收的射频中执行信号（VRF）的电压 - 电流转换 块（2）本身; 这种块（2）还包括单个退化电阻（RE1）。

公开(公告)号：EP0998025B1

公开(公告)日：2004-03-31

申请号：EP98830657.7

申请日：1998-10-30

Applicant: STMicroelectronics S.r.l.

Inventor： Filoramo, Pietro ,  Palmisano, Giuseppe ,  Salerno, Raffaele

IPC: H03D7/14 ,  H03D7/16

CPC classification number: H03D7/165 ,  H03D7/1433 ,  H03D7/145 ,  H03D7/1458 ,  H03D7/18