A direct conversion circuit that includes an in-phase and quadrature-phase feedback path that reduces Direct Current (DC) offset. Each feedback path includes a compensating mixer that generates an error correction voltage that is passed through a loop gain circuit and an integrator. The integrated signal...http://www.google.de/patents/US7197091?utm_source=gb-gplus-sharePatent US7197091 - Direct conversion receiver with direct current offset correction circuitry
