In this research, the rheological properties of non-Newtonian shear thickening fluid (STF) composed nano-sized solid particles have been investigated. The best conditions determined by optimizing both experimental production method and measurement system STFs. Mechanical, ultrasonic, mechanical ultrasonic mixing methods were used in STFs that silica particle (solid: aerosil) polyethylene glycol...

A 2.4 GHz CMOS up-conversion mixer using novel current mirrors based on chartered 0.18 μm RF CMOS technology for 2.4 GHz wireless sensor network (WSN) application is presented in this paper. The current-reuse current-mirror and current-bleeding technique are used in the driver and switching stages of the mixer, respectively. The post-layout simulation results demonstrate that the novel up-conve...

A double balanced Gilbert-cell class-A amplifier bleeding mixer (DBGC CAAB mixer) is proposed and implemented. The injection current is utilized to amplify the local oscillator (LO) signal to improve the performance of the transconductor stage. The DBGC CAAB mixer achieves a conversion gain of 17.5 dB at −14 dBm LO power, and the noise figure is suppressed from 45 dB to 10.7 dB. It is important...

In this paper a low power CMOS sub-harmonic mixer based on the Gilbert cell for 2.4 GHz ISM band application is presented, in which the position of the switching and transconductance stages of mixer has been exchanged. A tuning out inductor has been used between the RF and LO switching stages to improve the linearity and noise figure, and also to enhance the conversion gain of the Mixer. The ut...

An ultra-wideband mixer using standard complementery metal oxide semiconductor (CMOS) technology was first proposed in this paper. This broadband mixer achieves measured conversion gain of 11 1 5 dB with a bandwidth of 0.3 to 25 GHz. The mixer was fabricated in a commercial 0.18m CMOS technology and demonstrated the highest frequency and bandwidth of operation. It also presented better gain-ban...

Identity Mixer is an anonymous credential system developed at IBM that allows users for instance to prove that they are over 18 years old without revealing their name and birthdate. This privacy-friendly technology is realized using zero-knowledge proofs. We describe a formal model of Identity Mixer that is well-suited for automated protocol verification tools in the spirit of black-box cryptog...

We have measured the spectral linewidths of three continuous-wave quantum cascade lasers operating at terahertz frequencies by heterodyning the free-running quantum cascade laser with two far-infrared gas lasers. Beat notes are detected with a GaAs diode mixer and a microwave spectrum analyzer, permitting very precise frequency measurements and giving instantaneous linewidths of less than -30 k...