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This paper presents a low power impulse-radio ultra-wideband (IR-UWB) receiver based on a reconfigurable, high speed analog correlator called distributed pulse correlator (DPC). The DPC incorporates built-in local template pulse generation, and hence significantly reduces the power consumption and circuit complexity of the analog correlation receiver. A chip prototype of the IR-UWB receiver was implemented...
A new circuit technique, the distributed waveform generator (DWG), is proposed for low-power ultra-wideband pulse generation, shaping and modulation. It time-interleaves multiple impulse generators, and uses distributed circuit techniques to combine generated wideband impulses. Built-in pulse shaping can be realized by programming the delay and amplitude of each impulse similar to an FIR filter. Pulse...
Channel logical partitioning can better avoid the conflict and improve the agreement's efficiency. It has proved that double-channel access agreement efficient than the single-channel one by theory and simulation's test. And it will solve the exposed terminal problem. Proposed a design for new private multi-channel UWB MAC protocol applied distributed network in the background of UWB applied in wireless...
We present a wideband resistive feedback CMOS low-noise amplifier (LNA) with noise cancellation technique for ultra-wideband applications. The LNA achieves a 3-dB bandwidth of 0.7-6.5 GHz, power gain of 12.5 dB, and noise figure of 3.5-4.2 dB within the 3-dB bandwidth. The input matching is better than -11 dB from 0.7 to 12 GHz. The IIP3 is measured -5 dBm at 5 GHz. It is implemented in a 0.18 mum...
A distributed waveform generator is presented for sub-nanosecond pulse generation in UWB impulse radios. It time-interleaves multiple digital pulse generators, and uses an on-chip transmission line for wideband pulse combining. Compared to other UWB pulse generation and shaping solutions, it is low power and fully reconfigurable. A 10-tap, 10 GS/s prototype was implemented in 0.18μm standard digital...
Ultra-wide band (UWB) wireless communication occupies a bandwidth from 3.1 to 10.6 GHz to achieve high data rate over a short distance. Two competing schemes, namely multiband orthogonal frequency-division multiplexing (MB-OFDM) and direct sequence ultra-wide band (DS-UWB) are proposed to make use of the ultra-wide bandwidth. In this paper, an omnidirectional UWB monopole antenna is proposed. It was...
The stringent emission mask and interference specifications in ultra-wideband (UWB) impulse radios present great challenges for the transceiver architecture design and circuit implementation. This paper proposes to use integrated distributed transversal filters (DTF) for pulse shaping in the transmitter and for narrow-band interference (NBI) suppression in the receiver. Analyses show that an integrated...
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