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一种基于电压窗口技术的超低功耗SAR ADC
模数转换器(ADC) 逐次逼近寄存器(SAR) 电压窗口 超低功耗
2017/1/4
本文提出了一种应用于生物医学的超低功耗逐次逼近型模数转换器(SAR ADC).针对SAR ADC主要模块进行超低功耗设计.数模转换(DAC)电路采用vcm-based以及分段电容阵列结构来减小其总电容,从而降低了DAC功耗.同时提出了电压窗口的方法在不降低比较器精度的情况下减小其功耗.此外,采用堆栈以及多阈值晶体管结构来减小低频下的漏电流.在55nm工艺下进行设计和仿真,在0.6V电源电压以及10...
Impact of ADC Bandwidth and Clipping Ratio on COF-PON Systems Based on Spatial Coding and Subcarrier Multiplexing
Analog-to-digital convertor (ADC) clipping ratio code-division-multiplexing (CDM) passive optical networks (PON) subcarrier multiplexing
2016/12/2
In this paper, we analyze the impact of analog-to digital convertor (ADC) bandwidth and clipping ratio on the performance of a 1 Gb/s x 15 user CDM-over-fiber-PON (COF PON) system based on 16-QAM modu...
Improvement of All Optical ADC based on Phase-Shifted Optical Quantization by Using a Polarization Modulator
Phase-Shifted Optical Quantization Optical ADC Improvement
2015/5/15
A novel scheme of OADC using PolM is proposed in this paper and ENOB of 3.18 bits under a sampling rate of 10Gs/s is obtained in the experiment.
Volterra Nonlinear Compensation of 100G Coherent OFDM with Baud-rate ADC, Tolerable Complexity and Low Intra-channel FWM/XPM Error Propagation
Coherent Communications Fiber Optic Communications
2015/6/9
Nonlinear tolerance of PDM-OFDM transmission with in-line dispersion compensation, e.g. legacy ultra-long-haul submarine links, is substantially improved by a Volterra non-linear compensation scheme, ...
All-optical parallelization for high sampling rate photonic ADC in fully digital radar systems
Ultrafast information processing Nonlinear optics four-wave mixing
2015/6/9
Optical samples of RF signals are all-optically parallelized for further processing in low-speed electrical digitizers. This technique enables high-rate sampling with no additional jitter and limited ...
Resolution-enhanced ultrafast ADC using optical multi-period transfer functions of NOLMs
Ultrafast processes in fibers Fiber optics sensors
2015/6/9
We propose a resolution enhancement scheme using optical input/output multi-period transfer functions of NOLMs for ultrafast low-resolution ADCs. This scheme can provide a resolution of 8.8 ENOB by co...
A 100G coherent receiver needs 4 56Gs/s ADCs and a tera-OPs DSP which dissipate only tens of watts. This paper discusses the forces pushing towards a single-chip CMOS solution,and the challenges in re...
Optical Comb and Filter Bank (De)Mux Enabling 1 Tb/s Orthogonal Sub-band Multiplexed CO-OFDM Free of ADC/DAC Limits
Optical Comb Filter Bank (De)Mux Enabling Multiplexed CO-OFDM ADC/DAC Limits
2015/7/17
Realizations of 100-1000Gb/s CO-OFDM are hindered by electronic ADC/DAC rates. By(de)multiplexing the OFDM sub-bands by means of optical-comb generators with repetition rate matched to sub-band separa...