Title :
DC offset suppression in double balance direct conversion receivers
Author :
Nahapetyan, V. ; Hakhoumian, A. ; Hakhumyan, A.
Author_Institution :
Yerevan State Univ., Armenia
Abstract :
The double balance mixer scheme in-phase signal input and double-quadrature local oscillator (LO) is suggested for application on IQ direct conversion receivers. The influence of the gain and phase mismatches of splitters is investigated. It is shown that a similar scheme using square-law detectors is promising on optical applications.
Keywords :
mixers (circuits); optical receivers; optical signal detection; photodetectors; radio receivers; radiofrequency oscillators; DC offset suppression; DSP; IQ direct conversion receivers; LO-to-RF isolation; RF interface mismatch reflection; digital signal processing; double balance direct conversion receivers; double balance mixer; double-quadrature local oscillator; gain mismatch; in-phase signal input; optical applications; phase mismatch; photodetectors; square-law detectors; square-law multiplier;
Conference_Titel :
HF Radio Systems and Techniques, 2003. Ninth International Conference on (Conf. Publ. No. 493)
Print_ISBN :
0-85296-755-1
DOI :
10.1049/cp:20030433
