Jiangnan Yan Yuanjin Zheng Yong Ping Xu A novel DC-offset cancelling circuit for DCR. 396-399 2005 conf/iscas/2005 ISCAS (1) http://dx.doi.org/10.1109/ISCAS.2005.1464608 db/conf/iscas/iscas2005-1.html#YanZX05