A Charge-Domain Auto- and Cross-Correlation Based Data Synchronization Scheme With Power- and Area-Efficient PLL for Impulse Radio UWB Receiver

作者：Liu Lechang^*; Sakurai Takayasu; Takamiya Makoto

来源：IEEE Journal of Solid-State Circuits, 2011, 46(6): 1349-1359.

DOI：10.1109/JSSC.2011.2128210

• Ultra-wideband
• UWB
• charge-domain
• auto-correlation
• cross-correlation
• phase-locked loop
• PLL
• delay-locked loop
• DLL
• capacitance multiplier

A 1.2 V 100 Mb/s 2.93 mW discrete-time charge-domain impulse radio ultra-wideband (IR-UWB) receiver is developed in 65 nm CMOS. In the charge-domain, the template of the correlator is represented by capacitance and the correlation is implemented by charge addition instead of voltage multiplication and voltage integration. Power consumption of the charge-domain receiver is minimized by a novel auto-and cross-correlation based synchronization scheme. To reduce the power consumption and the chip area of the PLL clock generator for the receiver, a dual charge-pump PLL is proposed to scale up the capacitance of the loop filter without extra charge-pump current. The developed UWB receiver with the area-and power-efficient PLL achieves the energy consumption of 29.3 pJ/bit with the 62.5-ps timing step for data synchronization.

• 出版日期2011-6