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A 10GHz analog phase interpolator (PI) in Global Foundry 65nm CMOS technology has been presented. The PI mainly consists of the quadrature clock generator (QCG) and the phase Mixer. Different from the traditional divider, the QCG produces 4-phase clocks without reducing the clock frequency. As a result, it reduces the frequency of PLL from 20GHz to 10GHz, which can largely save the power consumption...
A high-speed low-power 1:16 demultiplexer with a novel symmetrical-edge-delay sense amplifier is presented in this paper. The traditional Sense-Amplifier-Based Flip-Flop (SAFF) has asymmetric rising and falling edges with the fact that the falling edge lags the rising edge the time of a gate delay, which has become a bottleneck of speed. In order to overcome the problem of nonsymmetry of output data...
A type of half-embedded cone grating nanostructure is proposed for antireflection (AR). It can achieve reflectance of down to 0.5% under normal incidence and 6% under incidence angle as large as 40 degrees in the 300–1100 nm wavelength range. Besides, it can maintain good performance in a large dimension range with a fixed period or vertex angle. Furthermore, the refractive index of the grating can...
We reported in this work that light absorption can be significantly enhanced in an a-Si thin film solar cell with a nano binary metallic grating patterned on the bottom side. The enhancement is mainly due to combination of several kinds of optical modes. Cavity mode, at the transverse and longitudinal cavities and surface plasmon mode, propagating along the interface of silicon and silver are the...
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