Min-Seok Cha

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In this work, a short wavelength microstrip line employing periodically arrayed capacitive elements (PACE) on GaAs monolithic microwave integrated circuit (MMIC) was developed for application to miniaturized on-chip passive components. The microstrip line employing PACE showed a wavelength much shorter than conventional transmission line. Concretely, the(More)
An aerated microbiological process was tested in 1.5-l stirred tank reactors for the treatment of dimethylamine salt of 2,4-dichlorophenoxyacetate (2,4-D). A mixed culture was used with the concentration range of 54 to 216 mg 2,4-D/l. The highest concentration was completely depleted within 6 to 8 days of contact time. 2,4-Dichlorophenol, the first(More)
In this work, spiral inductor structures employing SiN film were fabricated on GaAs substrate for a suppression of LO and its second harmonic leakage signals. Concretely, they were properly designed so that the self-resonance frequency was accurately tuned to LO and its second harmonic frequency, and they were integrated on the downconverter MMIC. Owing to(More)
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