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60 GHz switched-line-type phase shifter using body-floating switches in 0.13 μm CMOS technology

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2 Author(s)
Jong-Wook Lee ; Sch. of Electron. & Inf., Kyung Univ., Suwon, South Korea ; Seong-Yeon Kim

A two-bit switched-line type phase shifter has been designed and fabricated for 60 GHz phase array applications. A body-floating technique is used to reduce the insertion loss of the on-state switch while the off-state isolation is increased by the use of a resonating inductor connected across the switch. The size of the delay path in the phase shifter is reduced by adopting a lumped equivalent circuit realisation. Measurements demonstrate a minimum insertion loss of 8.2 dB with an average value of 8.9 dB at 60 GHz, with a return loss smaller than 12 dB over the frequency range 57-64 GHz.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 7 )