The need for high bandwidth operational amplifiers (op amp) exists for numerous applications. This need requires research in the area of op amp bandwidth extension. The exploited method in this thesis uses a class of compensation called Indirect Feedback Frequency Compensation in which the compensation current is fed back indirectly from the output to an internal high impedance node, to extend ...

The kinetics of muscular contraction is basic for the quantitative description of muscle and understanding its molecular mechanism. However, the subject has been embarrassed by several historical accidents. First, due to the lack until recently of adequate high (mechanical) impedance transducers, attention was focussed on isotonic measurement; this led to the idea of muscle as a shortening gene...

The propagation of short pulses with wavelength comparable to the size of a unit cell has been studied in a one-dimensional discrete metamaterial composed of steel discs alternating with toroidal nitrile O-rings under different levels of precompression using experiments, numerical simulations and theoretical analysis. This strongly nonlinear metamaterial is more tunable than granular chains com...

AESTRACT. Multi-layer insulation systems are widely used in many industrial sectors (particularly in automotive and aeronautic industries). They have a complex dynamic behavior due to the use of different maferials like viscoelastic, powelastic and acoustic /ayers. The interface conditions between these materials play also a significant m/e in the global behavior. The paper concentrates on mode...

A Log Periodic Dielectric Resonator Antenna (LPDRA) for broadband applications is presented. In this paper, a broad bandwidth antenna is formed by application of log periodic technique to the series fed electromagnetically coupled rectangular overlaid dielectric resonator array. This Log Periodic DRA is simulated using a CST microwave studio suite 2010. The simulated results show wider impedanc...

Porosity is a key parameter for reservoir evaluation. Inferring the porosity from seismic data often challenging and prone to uncertainties due number of factors. The main aim this paper show applicability inversion on old vintage map spatial at level. 3D-seismic wireline log are used properties Lower Goru productive sands in Gambat Latif block, Central Indus Basin, Pakistan. formation was inte...

Well-log measurements and seismic measurements should be compared at the same scale. The conversion of highly detailed borehole data into less detailed seismic data has to be done in a specific way considering conclusions from scaling analysis. One has to be careful with the differentiation to convert borehole acoustic impedance into reflectivity. In addition coarsening has to occur in such a w...