This paper presents a clock frequency doubler, having the function of automatic adjustable duty cycle without feedback loops. The duty cycle amount can be automatically adjustable using digitized delay block and a counter. This simplifies the design structure and allows the circuit to operate over a wide range of input frequency variation. The simulation results show that this frequency doubler...

∗ We introduce a model to design reflectors that take into account the inverse-square law for radiation, i.e. it considers how far the reflector is from the source. The radiant intensity at the source and the irradiance distribution at the target are given. We prove the existence of solutions in the near field case, when the input and output energies are prescribed. A uniqueness property will a...

Detecting and removing minor faults in power transformer winding is essential because minor faults may develop and lead to major faults and finally irretrievable damages occur. In this paper in order to detect the position of short-circuit in the winding, frequency response of the input impedance of a power transformer is analyzed. Common short-circuits are categorized and the results are compa...

This paper addresses the design of stabilizing controllers for a nested control system where the controller is realized in a distributed manner, considering uncertainty not only in the controller-to-plant and plant-to-controller channels but also in the nest-to-nest, subcontroller-to-subcontroller communication. An input-output approach is taken. Two appropriate controller architectures that st...

A new on-wafer de-embedding method using thru, short and open patterns sequentially is proposed to eliminate the errors of conventional methods. This “thru-short-open” method is based on the removal of the coupling admittance between input and output interconnect dangling legs. The increase of the de-embedding effect of the lossy coupling capacitance on the cutoff frequency in MOSFETs is observ...

− A method for the assessment of the dynamic behaviour of heavy current shunts is described, which is based on the evaluation of the shunt frequency response through spectral analysis of input and output measured signals. The method has been tested by applying it to simulated current impulses and experimented in the case of a pulse current, generated by the discharge of a cable capacitance, mea...

Rob Eling 1,2,*, Mathys te Wierik 1,2, Ron van Ostayen 1 and Daniel Rixen 3 1 Precision and Microsystems Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands; [email protected] (M.t.W.); [email protected] (R.v.O.) 2 Research and Development, Mitsubishi Turbocharger and Engine Europe, Damsluisweg 2, 1332 EC Almere, The Netherlands 3 Institute o...

In seismic reflection prospecting for oil and gas a key step is the ability to estimate the seismic wavelet (impulse response) traveling through the earth. Such estimation enables filters to be designed to deblur the recorded seismic time series and allows the integration of “downhole” and surface seismic data for seismic interpretation purposes. An appropriate model for the seismic time series...

This technical report presents the development of a simple envelope, or group, delay filter whose magnitude response emulates allpass characteristics for relatively broad frequency passbands. Unlike traditional allpass delay networks, the filter presented herewith exploits no inductances and maintains a common ground between its input and output ports. The absence of circuit inductances simplif...

Electrostatic discharge (ESD) protection design for high-speed input/output (I/O) interface circuits in a 130-nm CMOS process is presented in this paper. First, the ESD protection diodes with different dimensions were designed and fabricated to evaluate their ESD levels and parasitic effects in gigahertz frequency band. With the knowledge of the dependence of device dimensions on ESD robustness...