A Digital Ultra-Wideband Multiband Transceiver Architecture with Fast Frequency Hopping Capabilities

This paper presents for the first time the circuit parameter analysis of a digital Multiband-UWB transceiver, encompming a novel low-power subhand generator. This subband generator is capable of producing multiple frequency bands, enabling subband generation From 3 to l0GHz with nanosecond switching times. The circuit analysis of the complete transceiver is used to set parameters of components. The analysis indicate that a LNA gain of 20dB, baseband amplifier gain of 45dB, matched filter accuracy of five bits, ADC accuracy of two hits, a 60dB dynamic range of the multi frequency generator, and frontend offset voltage of less than 30mV is required to achieve a l0dB SNR. Hspice simulation utilizing 0.35wm CMOS technology suggest that the power consump tion of the subhand generator is 8mW from a 1.8V power