Marco Kassis

Cadence Design Systems, Inc.

A novel parallel non-Monte Carlo transient noise analysis method for general nonlinear analysis is presented. Non-Monte Carlo based transient noise methods avoid expensive and lengthy Monte Carlo iterations by describing the nonlinear system with a linear time-varying system that can be used to calculate the variance of the waveform at every time p...

The polyharmonic distortion parameters of a nonlinear structure or circuit block, often referred to as X-parameters,* relate the different harmonics of the incident waves to those of the reflected waves in the frequency domain. Recently, a closed form derivative-based approach for calculating the X-parameters sensitivity with respect to linear circ...

The efficient generation of X-parameter macromodels for nonlinear RF circuit blocks that capture the essential nonlinear behavior of the system has become increasingly useful and even necessary. Recent work on X-parameter computations have provided clear relations between the X-parameters and circuit moments. In this paper, we show how higher order...

Recently X-parameters <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> have been proposed as an extension to the concept of S-parameters in order to create a macromodel that captures nonlinear behavior. In this paper, we develop a relation between the X-parameters and circuit moments. Higher ord...

Loewner Matrix interpolation based macromodeling methods can generate an accurate macromodel for large and complex structures. However, there is less flexibility in the choice of the macromodel order due to the need to ensure passivity. In this paper, an algorithm is proposed to obtain a reduced order model based on Loewner Matrix interpolation whi...

In this paper, a method for obtaining a reduced order macromodel based on measured/simulated admittance parameters is presented. Loewner Matrix based macromodeling may require an higher than optimal system order in order to preserve the passivity of the macromodel. In this paper, a modified order selection scheme, combined with the Hamiltonian-Symp...

In this paper, a method for obtaining a reduced order macromodel based on measured parameters is presented. Loewner Matrix based macromodeling may require a higher than optimal system order in order to preserve the passivity of the macromodel. In this paper, a modified order selection scheme, combined with the Hamiltonian Matrix Pencil perturbation...

Applying multiple redundant and diverse communication channels is an established method to achieve an improved overall communication channel. When applied for packet-based data transmission over channels with strongly nondeterministic behaviour due to environmental influence, such as Wireless Communications, timing performance can be greatly improv...

Redundancy techniques based on the combination of multiple diverse communication channels are an established countermeasure to improve performance characteristics of wireless communication systems. Besides parallel redundancy in the space and frequency domain, serial redundancy in the time domain can be utilized. It is known that the parallel appro...