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A 7‐GHz complementary Colpitts voltage‐controlled oscillator (VCO) in 0.18‐μm CMOS process is proposed to generate three output phases with wide tuning range.The designed VCO uses three single‐ended current‐reused VCOs coupled via the three‐resonator inductors connected in a delta configuration. The proposed VCO oscillates from 6.25 to 7.27 GHz, and the power consumption is 11.47 mW at 1.5‐V supply...