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A 90-nm CMOS low-noise amplifier (LNA) for 3-10-GHz ultra-wideband (UWB) applications is presented. The circuit adopts a single-ended dual-stage solution. The first stage is based on a current-reuse topology and performs UWB (3-10 GHz) input matching. The second stage is a cascode amplifier with resonant load to enhance gain and reverse isolation. Thanks to both the circuit solution and design approach,...
In this paper, a low power low-noise amplifier (LNA) using inductor-coupling resonated technique is designed for ultra-wideband (UWB) wireless system. The design consists of a wideband input impedance matching network, one stage cascode amplifier with inductor-coupling resonated load, and an output buffer; it was fabricated in TSMC 0.18 um standard RF CMOS process. The UWB LNA gives 10.8 dB power...
This paper analyzes the architecture of wideband low noise amplifier (LNA) for multi-band orthogonal frequency division multiplexing modulation (MB-OFDM) ultra-wideband (UWB) system. Noise matching and input impedance matching are compared among different LNA architectures. Power consumption and area for different kinds of LNA architectures are also compared through the figure of merit (FOM).
This paper presents a merged LNA and mixer covering the frequency range from 3.1-10.6 GHz that able to meet the UWB communication technology. By employing the capacitive cross-coupling transconductor, the gm is boosted and the NF is reduced. A current-mode mixer shares the output load of the LNA to achieve high gain and wideband matching simultaneously.The output current of LNA flows into the mixer...
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