An in-phase and quadrature (I/Q) mixer is used to convert a radio-frequency (RF) ... [1] and [5], a parallel electro-optical modulation structure is established using ...
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Abstract—A wideband microwave photonic in-phase and quadrature (I/Q) mixer is proposed and experimentally demonstrated. In the proposed system, the 90-degree phase difference of the I/Q mixer is achieved by implementing phase modulation and intensity modulation in I and Q channels, respectively. Experimental results show that the proposed I/Q mixer has the advantages of excellent 90-degree phase balance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