S. Amakawa, R. Goda, K. Katayama, K. Takano, T. Yoshida, M. Fujishima
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Wideband CMOS decoupling power line for millimeter-wave applications
A CMOS decoupling power line intended for use in millimeter-wave circuits is fabricated and characterized up to 325 GHz. It is designed to have a low dc resistance and an extremely low high-frequency characteristic impedance. The input impedance of a 0.3-mm-long line is shown to stay roughly below 1 Ω in 20 GHz-170GHz and below 2 Ω in 220 GHz-325 GHz, irrespective of whether the far end of the line is open- or short-ended, which clearly demonstrates its extremely wideband decoupling capability.
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