In a single carrier zero-IF receiver, the multiple carriers are sampled after quadrature demodulation. The RF band select filter helps to reject out-of-band signals. The demodulator needs to cope with all in-band signals. Channel selection is implemented at baseband using analog low-pass filters. The analog quadrature demodulator can introduce quadrature impairments, noise and nonlinearities that can adversely effect the receiver’s performance. Therefore, it is necessary to ensure adequate IQ magnitude and phase balance, good noise figure with and without blockers present, and suitable IP2 and IP3 performance to prevent inter-mods from degrading SNR.