Analog electronics course is an important fundamental electric course. It is difficult to study and its content is difficult to comprehend and master. Animated coursewares of PN junction and negative feedback circuits are designed and made using flash technology. They can dynamically demonstrate the motion of carriers, the formation of PN junction and the label of instant polarity. By watching ...

This paper describes an address event representation (AER) transceiver chip that accepts 2D images and produces 2D output images equal to the input filtered by even and odd symmetric orientation selective spatial filters. Both input and output are encoded as spike trains using a differential ON/OFF representation, conserving energy and AER bandwidth. The spatial filtering is performed by symmet...

A technique is introduced to enable the simulation of floating-gate transistors within standard analogue circuit simulators, such as SPICE. This technique can be used in all types of circuit simulations, ranging from DC sweeps to charge-modification scenarios. The technique is then used to simulate several analogue circuits, the results of which show strong agreement with identical circuits fab...

We review di4erent applications of silicon conductance-based neuron models implemented on analog circuits. At the single-cell level, we describe a circuit in which conductances are programmed to simulate various Hodgkin–Huxley type models; integrated in a hardware/software system, they provide a simulation tool; an illustrative example is the simulation of bursting neurons of the thalamus. At t...

This article tackles categorical coherence within a two-dimensional generalization of Lawvere’s functorial semantics. 2-theories, a syntactical way of describing categories with structure, are presented. From the perspective here afforded, many coherence results become simple statements about the quasi-Yoneda lemma and 2-theory-morphisms. Given two 2-theories and a 2-theory-morphism between the...

When passing through the RF analog electronics devices of the transceiver, the information signal is subject to various distortions named ’dirty RF’,which degrades the communication system performance.In this paper, we first overview dirty RF effects and then propose an analytical evaluation of the performance of OFDM system where I/Q imbalance, HPA , and phase noise effects are jointly taken i...

The aim of this work is to assist designing of robust circuits to minimize the amount of defective circuits and therefore to increase the yield of production. The Fraunhofer ITWM considers electronic circuits at system level using its EDA software Analog Insydes, which allows analysis and symbolic approx ima tion of nominal analog circuits. The software now has been extended to handle parameter...

We describe the response properties of a compact, low power, analog circuit that implements a model of a leaky–Integrate & Fire (I&F) neuron, with spike-frequency adaptation, refractory period and voltage threshold modulation properties. We investigate the statistics of the circuit’s output response by modulating its operating parameters, like refractory period and adaptation level and by chang...

Implementation of checkers on the basis of threshold functions is problematic due to low stability of component threshold schemes. For increasing the implementability, the paper investigates two methods of improving stability of threshold based checkers. One of the methods is majorization of the threshold schemes. The second method is so-called calibration of the mentioned schemes. Both of the ...

We present the design of an analog circuit which solves linear programming (LP) or Quadratic Programming (QP) problems. In particular, the steadystate circuit voltages are the components of the LP (QP) optimal solution. The paper shows how to construct the circuit and provides a proof of equivalence between the circuit and the LP (QP) problem. The proposed method is used to implement a LP-based...