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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...
This paper proposes a variable-modulus injection-locked frequency multiplier for better harmonic suppression. It is more suitable for fully-integrated implementation using low-Q on-chip inductors in digital CMOS than conventional approaches. A prototype dual-modulus frequency doubler/tripler with 1.6 GHz input and 3.2 GHz/4.8 GHz output is implemented in a 0.18 mum standard digital CMOS. At 5% locking...
A distributed waveform generator (DWG) with DAC-assisted pulse generators is presented for the ultrafast waveform generation. It time-interleaves multiple pulse generators, and uses an on-chip transmission line for wideband pulse combining. Each unit pulse generator adopts a new current-steering topology which incorporates the edge combiner into the conventional current-steering structure for high-speed...
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...
Injection-locked clocking (ILC) has been proposed previously to improve the skew and jitter performance while reducing the power consumption in multi-gigahertz clock distribution networks. This paper presents a new design of the injection-locked oscillator (ILO) suitable for ILC applications. It uses a transformer to generate differential signals and then directly inject them into the ILO core. It...
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...
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