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A 3-to-5 GHz ultra-wideband (UWB) low-noise amplifier (LNA) with a low-power balanced active balun aiming at IEEE 802.15.4a (Band Group 1) compliance is presented. The LNA employs an NMOS feedback for wideband input matching, and current reuse scheme for reducing power consumption. The active balun uses a differential amplifier with a cascoded cross-coupled pair to provide 6 dB gain as well as to...
This paper designs an impulse-radio ultrawideband (IR-UWB) system for precise ranging and low-rate communication, especially targeting IEEE 802.15.4a standard, which is a candidate technology for realizing the ubiquitous home. We first introduce the IR-UWB packet and packet based ranging in IEEE 802.15.4a. Incorporated by IR-UWB link budget analysis, we propose a full-digital transceiver along with...
This paper investigates LPF requirements for IR-UWB systems, especially targeting the IEEE 802.15.4a standard. We first suggest the architecture for IEEE 802.15.4a IR-UWB to construct a frame at the transmitter and successfully decode the transmitted bits at the receiver. We then relieve the LPF requirement, focusing on implementation at low-complexity and small size. Simulation results verify our...
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