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Image-reject mixers (IRMs) play an important role in microwave and millimeter-wave receivers to eliminate the interference from the image frequency. The keys to realizing a wideband IRM are the precise 90° phase shifting and parallel frequency mixing within a large operational frequency range. In this paper, we propose and demonstrate a novel photonic scheme that can perform simultaneously wideband...
Based on a photonic microwave phase shifter, a microwave image-reject mixer (IRM) with all the mixing spurs suppressed is proposed in this paper, by using a dual-polarization dual-drive Mach-Zehnder modulator (DPol-DMZM). A proof-of-concept experiment is conducted. Due to the wide band and precise 90-degree phase shift introduced by the photonic microwave phase shifter, the image rejection ratio reaches...
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