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This paper presents a 14-bit digital-to-analog converter (DAC) with pipelined dynamic element matching to eliminate signal-dependent distortions and achieve good linearity at high sampling frequencies. A return-to-zero output stage is developed to enhance the dynamic linearity and increase the output impedance of current sources. And a novel current source array is employed to eliminate systematic...
Reducing the power consumption is one of the most important design problems at present. Modern microprocessors employ caches to bridge the great speed variance between the main memory and the central processing unit, but these caches propose larger and larger proportion in the total power consumption. In fact, many values rarely need the full-bit dynamic range supported by a cache. The Narrow-Width...
Advanced Encryption Standard (AES) is one of the latest symmetric key cryptosystem standard, which is proposed to replace DES. Whirlpool is a famous hash encryption algorithm that processes the building blocks in a similar way. Although some slight differences are presented, implementing an integrated design of AES and Whirlpool on the FPGA can reduce the overall area. Further more, it provides a...
In order to manufacture antenna integrated with RF-MEMS switch on the same substrate, a silicon wafer was used as substrate. As the high dielectric constant of silicon (ϵr=11.9) degrades an antenna efficiency and excites surface waves especially at high frequency, removing substrate under the antenna and giving birth to an air cavity is a general way to reduce the dielectric constant of silicon. In...
A biomedical electronics interface to detect heart signals is presented including a reconflgurable full differential fifth-order Bessel Gm-C filter and a 12 bit low-power fully differential successive approximation register analog-to-digital converter (SAR ADC). The total fully differential structure reduces the input signal noise and distortion effectively. A switch array is used in Gm-C filter to...
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