Miniature Four-Way and Two-Way 24 GHz Wilkinson Power Dividers in 0.13 $\mu$m CMOS

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This letter presents 24 GHz four-way and two-way miniature Wilkinson power dividers (PDs) in a standard CMOS technology. The chip area is significantly reduced using a lumped-element design, and the effective areas of four-way and two-way Wilkinson dividers are 0.33 times 0.33 mm2 and 0.12 times 0.29 mm2, respectively. The four-way Wilkinson divider results in an insertion loss 24.7 dB from 22 to 26 GHz. The two-way Wilkinson divider results in an insertion loss 14.8 dB from 22 to 26 GHz. To the author's knowledge, this is the first demonstration of 24 GHz four-way Wilkinson PD in a standard CMOS technology.