公开(公告)号：AU2002306770A1

公开(公告)日：2002-10-03

申请号：AU2002306770

申请日：2002-03-18

Applicant: CONEXANT SYSTEMS INC

Inventor： HATCHER GEOFFREY ,  MAGOON RAHUL ,  MOLNAR ALYOSHA C

IPC: H03D7/14 ,  H04B1/28 ,  H04B1/26

Abstract: Double balanced mixers having transistor pairs are affected by area mismatches between the transistors. The area mismatches can be represented as a ratio between the mixer core transistors that is directly related to voltage. Thus, an input voltage into one of the mixer core transistors in a transistor pair can compensate for the area mismatch. The compensation is achieved by a voltage track and hold feedback loop to one of the mixer core transistors.

公开(公告)号：WO02075991A3

公开(公告)日：2003-03-20

申请号：PCT/US0208486

申请日：2002-03-18

Applicant: CONEXANT SYSTEMS INC

Inventor： HATCHER GEOFFREY ,  MOLNAR ALYOSHA C ,  MAGOON RAHUL

IPC: H03D7/14 ,  H04B1/28 ,  H04B1/26

CPC classification number: H03D7/1425 ,  H03D7/145 ,  H03D7/1458 ,  H03D2200/0043 ,  H03D2200/0047 ,  H03D2200/0088 ,  H04B1/28

Abstract: Double balanced mixers (100) having transistor pairs (112,114,122,124) are affected by area mismatches between the transistors. The area mismatches can be represented as a ratio between the mixer core transistors that is directly related to voltage. Thus, an input voltage (102) into one of the mixer core transistors in a transistor pair can compensate for the area mismatch. The compensation is achieved by a voltage track and hold feedback loop created by operational amplifier (162), to one of the mixer core transistors.

Abstract translation: 具有晶体管对（112,114,122,124）的双平衡混频器（100）受到晶体管之间的区域不匹配的影响。 区域不匹配可以表示为与电压直接相关的混频器核心晶体管之间的比率。 因此，晶体管对中的混频器核心晶体管之一的输入电压（102）可以补偿区域失配。 通过由运算放大器（162）产生的电压跟踪和保持反馈回路来实现补偿到混频器核心晶体管之一。