An Area-Efficient DC Offset Cancellation Architecture for Zero-IF DVB-H Receivers

This letter presents a new dc offset cancellation structure for zero-IF receivers. A very small occupied area is the main advantage of this structure. The differential high-pass filter based on this structure, which has been implemented in the 0.18-μm CMOS technology, achieves a lower cutoff frequency of 180 Hz. The occupied silicon area is less than 0.167 mm2. The gain variation of this filter is...