公开(公告)号：EP3108630A1

公开(公告)日：2016-12-28

申请号：EP15704667.3

申请日：2015-02-03

申请人： Qualcomm Incorporated

发明人： KIM, Hong Sun ,  JAFFEE, James Ian ,  SHEEHY, Paul ,  DUNWORTH, Jeremy Darren ,  WANG, Cheng-Han ,  GUDEM, Prasad Srinivasa Siva ,  CHOKSI, Ojas Mahendra ,  PARK, Jungdong

IPC分类号： H04L27/36

CPC分类号： H04L27/362 ,  H04L27/206 ,  H04L27/2071 ,  H04L27/364 ,  H04L2027/0016

摘要： Certain aspects of the present disclosure provide methods and apparatus for performing quadrature combining and adjusting. One example circuit may include first through fourth mixing circuits. The first mixing circuit may multiply a radio frequency signal with a first local oscillating signal to generate a first frequency converted signal. The second mixing circuit may multiply a radio frequency (RF) signal with a second local oscillating signal, which may be about 90° out of phase with the first local oscillating signal, to generate a second frequency converted signal. The third and fourth mixing circuits may multiply the RF signal with the second and first signals, respectively, to generate third and fourth frequency converted signals, respectively. A first combining circuit may combine the first and third frequency converted signals, and a second combining circuit may combine the second and fourth frequency converted signals.