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We describe a 60-GHz coplanar MMIC low-noise amplifier (LNA) using 0.1 /spl mu/m-gate-length InP heterojunction FETs (HJFETs). An optimum gate width of 80 /spl mu/m was determined for the first stage FET by using a small signal model including accurate scaling of the gate resistance. On-wafer noise measurements demonstrated a noise figure of 2.2 dB and a(More)
Illicit drug abuse is a serious global problem that can only be solved through international cooperation. In Asian countries, the abuse of methamphetamine is one of the most pressing problems. To assist in the control of methamphetamine, the authors investigated in detail the character of ephedrine, which is a key precursor for the illicit manufacture of(More)
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