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We propose a digital wideband receiver scheme covering multiple Nyquist zones by exploiting phase and magnitude mismatch in the conversion from real-valued signals to complex-valued signals. The digital wideband receiver is designed to detect uncooperative signals. The magnitude/phase mismatch due to an imperfect hybrid coupler is often considered undesirable and needs to be compensated. However, by exploiting the frequency-dependent magnitude/phase mismatch phenomenon, we can distinguishdoi:10.1587/elex.11.20140238 fatcat:7ag6lix5vbeyla6udy3gugodge