ICs can be powered directly by light when a supply voltage source capable of generating a multiple of the open clrcult voltage of one pnqnctlon 1s available on a chip Two schemes have been mvestlgated for cascading photovoltalc cells on the chip The structures can be made compatible with standard bipolar processes Deep Ion lmplantatlons have been used here to realize the multiple-Junction struc...

This paper presents five-stage and seven-stage traveling-wave amplifiers (TWA) in a 0.12m SOI CMOS technology. The five-stage TWA has a 4–91-GHz bandpass frequency with a gain of 5 dB. The seven-stage TWA has a 5–86-GHz bandpass frequency with a gain of 9 dB. The seven-stage TWA has a measured 18-GHz noise figure, output 1-dB compression point, and output third-order intercept point of 5.5 dB, ...

This paper describes a 1.5-V 5 GHz I/Q down conversion mixer in a 0.18-μm CMOS process. The mixer achieves a conversion gain of 12.7 dB within 1-dB compression point (iCP1dB) of -15.83 dBm. It also achieves a double side band (DSB) NF of 13.5 dB. The mixer's IIP3 is -5.94 dBm. The mixer consumes only 5.72 mA of current from a 1.5-V power supply. Key-Words: Analog RF-CMOS, IEEE 802.11a, IEEE 802...

This paper analyses two schemes of single-stage diode-switched active filters used in new switching power supplies designs to improve the power factor. From the point of view of the power flow, the distortion reduction is based on the improvement of the power conversion processes. Most of the ca/cc switching power supplies consists of two separated parts: a rectifier – in most cases a diode bri...

introduction: this study aimed to assess the scanning electron microscope (sem) analysis of tooth surface irradiated by erbium:yttrium–aluminum–garnet (er:yag) laser with various parameters. methods: number of 25 extracted human third molars free of caries were used in this study. the teeth were put into 5 groups for laser irradiation as follows: group 1 (power: 0.5 w, energy: 50 mj); group 2 (...