专利名称：RF TRANSCEIVER IC HAVING INTERNAL
LOOPBACK CONDUCTOR FOR IP2 SELF TEST
发明人：KO, Jin-Su,KOHLMANN, Michael,AHRARI,
Bahman
申请号：EP09752995.2申请日：20091113公开号：EP2359485B1公开日：20170111
摘要：An RF transceiver integrated circuit has a novel segmented, low parasiticcapacitance, internal loopback conductor usable for conducting IP2 self testing and/orcalibration. In a first novel aspect, the transmit mixer of the transceiver is a current modeoutput mixer. The receive mixer is a passive mixer that has a low input impedance. In theloopback mode, the transmit mixer drives a two tone current signal to the passive mixervia the loopback conductor. In a second novel aspect, only one quadrature branch of thetransmit mixer is used to generate both tones required for carrying out an IP2 test. In athird novel aspect, a first calibration test is performed using one quadrature branch ofthe transmit mixer at the same time that a second calibration test is performed using theother quadrature branch, thereby reducing loopback test time and power consumption.
申请人：QUALCOMM INC
地址：US
国籍：US
代理机构：Schmidbauer, Andreas Konrad
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容