Micromachined capacitive inertial sensors incorporated in sigma-delta force-feedback loops have been proven to improve linearity, dynamic range and bandwidth, and also provide a direct digital output. Previous work mainly focused on using only the sensing element to form a 2order single loop sigma-delta modulator ( M ). Therefore, the advantages of higher-order (4-order and 5-order) single loop...

A dual-path amplifier topology with dual-loop parallel compensation technique is proposed for low-power three-stage amplifiers. By using two parallel high-speed paths for high-frequency signal propagation, there is no passive capacitive feedback network loaded at the amplifier output. Both the bandwidth and slew rate are thus significantly improved. Implemented in a 0.6m CMOS process, the propo...

Introduction: The class-AB buffer amplifier is widely used for driving heavy resistive or capacitive loads [1–4]. Some buffer amplifiers employ a pseudo-source follower, which has a pair of complementary common-source transistors with two feedback loops consisting of a pair of complementary error amplifiers [1–2]. Employing error amplifiers introduces the excess phase shift and makes the freque...

An advanced interface for playable media is presented for enabling both musical performance and multiple agents’ play. A large format capacitive sensing panel provides a surface to project visualizations of swarm simulations as well as the sensing mechanism for introducing human players’ actions to the simulation. An evolutionary software interface is adapted to this project by integrating swar...

In this paper, the charge pump (CP) based on a switches-in-source architecture is to be improved by gainboosting amplifiers for phase-locked loops (PLLs). In our design, two differential amplifiers were employed in this CP to reduce the effect of the channel length modulation in MOS transistors. As a result, the up and down currents will be rather independent of the output voltage transformed b...

In this paper, a closed-loop, smart transducer design is proposed, based on artificial neural network (ANN) techniques. The design aims to improve the performance of open-loop, off-the-shelf capacitive acceleration sensors and increase their robustness to manufacturing tolerances. A Òmodel referenceÓ control strategy was adopted for the design of the smart transducer. Multilayer perceptron (MLP...

A low phase noise, small power dissipation and small sized K-band cascode differential voltage-controlled oscillator (VCO) with capacitive feedback topology using 0.18 μm CMOS technology is described. The VCO operated can be tuned between 19.1 GHz and 20.9 GHz and has low phase noise of -108.67 dBc/Hz at a 1 MHz offset. The output power of the 20.7 GHz is about -21.12 dBm. The Figure of merit (...

As mechanical end-effectors, microgrippers enable the pick–transport–place of micrometer-sized objects, such as manipulation and positioning of biological cells in an aqueous environment. This paper reports on a monolithic MEMS-based microgripper with integrated force feedback along two axes and presents the first demonstration of forcecontrolled micro-grasping at the nanonewton force level. Th...