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A scheme to generate a frequency-locked multicarrier based on a complementary frequency shifter (CFS) with double recirculating frequency-shifting loops has been proposed and analyzed theoretically. The transfer function and output properties of a CFS-based multicarrier generator (CMCG) have been derived. Based on our analysis, 100 carriers have been obtained with acceptable flatness under perfect and imperfect operation conditions. The results show that the proposed CMCG can achieve hundreds of frequency-locked carriers used in various scenarios.
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Li et al. (2013) studied this question.
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