Wideband receiver design using frequency-dependent magnitude/phase mismatch

IEICE Electronics Express

Chi-Hao Cheng¹ 

[1] Department of Electrical and Computer Engineering, Miami University

关键词: sub-Nyquist sampling;    I/Q imbalance;    wideband receiver;   

DOI  :  10.1587/elex.11.20140238

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(10)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 distinguish signals from different Nyquist zones. Simulation results demonstrate that, using carefully designed magnitude/phase mismatch, we can detect signals over multiple Nyquist zones. The proposed method can lead to a new wideband receiver design.

【 授权许可】

Unknown