Jenn-Hwan Tarng

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—A two-stage 3.1-to 10.6-GHz ultrawideband CMOS low-noise amplifier (LNA) is presented. In our design, a parallel resistance–capacitance shunt feedback with a source in-ductance is proposed to obtain broadband input matching and to reduce the noise level effectively; furthermore, a parallel inductance–capacitance network at drain is drawn to further(More)
—A multipath-clustering phenomenon, which is caused by the fact that scatterers tend to group together in realistic environments, has a significant impact on the channel capacity. For a band-limited system, due to the limitation of the signal time resolution, observable multipath-clustering is affected not only by propagation environments but also by the(More)
In this paper, a low-power ultra-wideband (UWB) low-noise amplifier (LNA) is proposed. Here, we propose a structure to combine the common gate with band pass filters, which can reduce parasitic capacitance of the transistor and to achieve input wideband matching. The π-section LC network technique is employed in the LNA to achieve sufficient flat gain. A(More)
—This brief presents an integrated W-band passive imager, including a low-noise amplifier, a Dicke switch, a detector, a low-pass filter, a programmable-gain amplifier, and a 10-bit 20-MHz pipeline analog-to-digital converter (ADC). With digital outputs, the imager is ready to be interfaced with a digital signal processor to complete its system(More)