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This paper presents a novel pseudo-2bit 4GS/s flash analog-to-digital converter (ADC) for an OFDM Impulse Radio Ultra Wide Band (IR-UWB) receiver. Comparing to traditional 2bit flash ADC, it saves a comparator and an encoder. In this ADC, all the signals both in the analog part and the digital part are differential and low swing. A serial-to-parallel module is designed to speed down the output data...
A 4 GS/s 2-bit non-time-interleaved flash ADC is designed for an IR-UWB (Impulse Radio Ultra Wide Band) receiver. In this flash ADC, implementing differential low-swing operation in analog part and CML (current mode logic) in digital part result in high-speed and low power consumption. Furthermore, because of the low-bit-sampling characteristic of the IR-UWB system, non-time-interleaved structure...
This paper presents a CMOS UWB (ultra wide band) pulse generator based on binary pulse amplitude modulation with time-hopping (TH-BPAM). The basic structure of the circuit involves a time-hopping circuit and a pulse generator. The 1st derivative of the Gaussian pulse is generated by the circuit in the TH-BPAM mode, of which the width is 700ps and can be regulated. The circuit has been simulated by...
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