Chia-Shih Cheng

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We demonstrated a 10GHz low phase noise differential Colpitts Voltage-Controlled Oscillator (VCO) utilizing TSMC 0.18 m μ 1P6M CMOS process with transformer coupling technology. The transformer coupling approach not only reduces the phase noise but also improves the power consumption owing to the number of active devices can be reduced. The total power(More)
A high-linearity AlGaAs/InGaAs pseudomorphic HEMT RF driver amplifier was developed using a tunable field-plate (FP) bias voltage technology in this study. In order to improve the circuit linearity performance, an FP device was employed at the output stage to provide an additional mechanism to suppress the power of the second and third-order harmonics in a(More)
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