Analyses of Power Output of Piezoelectric Energy Harvesting Devices Directly Connected to a Resistive Load Using a Coupled Piezoelectric-Circuit Finite Element Method Meiling Zhu, Emma Worthington and James Njuguna Department of Materials, Department of Sustainable Systems Cranfield University, Bedfordshire, MK43 0AL UK Abstract A coupled piezoelectric-circuit finite element model (CPC-FEM) is ...

res of SIS receivers now in the range 2-4 times the ), the overall sensitivity of radio astronomy sly degraded by atmospheric noise, and sometimes by cillator source. In spectral line measurements, wanted (image) sideband can be eliminated by using an o reduce local oscillator noise, balanced mixers can ealize image separating and balanced mixers using RF circuits, but they are difficult to fab...

Previous experimental and computational work has demonstrated that the geometry of the impeller has a significant effect on the mixing performance of continuous powder mixers. In particular, different blade patterns using either all blades pushing the powder forward (‘forward pattern’) are less effective than patterns where some of the blades push the powder backwards (‘alternate pattern’). In ...

In addition to broadband gain and input matching requirements, the UWB standard also poses a tight specification on the band switching time (9ns), thus precluding the direct synthesis of frequencies by phase locking. An approach suggested for this task incorporates a single phase-locked loop (PLL) and a number of single-sideband (SSB) mixers to generate different frequencies that are present at...

The effects of three different mixers, two different feeding orders and nanoclay content on the structure development and rheological properties of PE/nanoclay nanocomposite samples were investigated. Fractional Zener and Carreau–Yasuda models were applied to discuss the melt linear viscoelastic properties of the samples. Moreover, scaling law for fractal networks was used to quantify clay disp...

With the advancements in wireless technologies a lot of concern has been given for designing RF circuits and the designers are trying to introduce new topologies to achieve better outputs whether be at transmitter or receiver section of a communication system and this in-turn has led to the development of individual components of these systems. In this paper, a review of various broadband confi...

BSIM4 model is not suitable for distortion analysis of circuits with bias point VDS 1⁄4 0, such as passive mixers and RF switches, due to discontinuities in higher order derivatives. Surface potential based PSP model has continuous derivatives to at least third-order, and is therefore suitable for intermodulation products simulation. This paper presents the case study of BSIM4 to PSP model conv...

This paper describes an alternate test methodology for radio-frequency mixers. The methodology is based on current signatures obtained by sampling the filtered supply current when the circuit-under-test is stimulated by a single tone sinusoidal. Sampling of supply current instead of voltage eliminates the parasitics and loading due to test circuitry on the signal path, hence provides a non-inva...