“…DC-offset is perhaps the worst problem in zero-IF receivers [1]- [7], [9], [10], [24]- [26], desensitizing the receiver by saturating the circuits. Due to finite isolation, the LO signal can leak to the other mixer input, or even the LNA input or through the antenna [1], [5], [7], [9]- [12], [25], mixing with itself and resulting in a DC component. The leakage to the antenna also creates an in-band interferer, since (part of) the power is radiated [1], [3], [7], [10], [12].…”