Computer-aided circuit analysis tools for RFIC simulation: algorithms, features, and limitations

Abstract

The design of the radio frequency (RF) section in a communication integrated circuit (IC) is a challenging problem. Although several computer-aided analysis tools are available for RFIC design, they are not effectively used, because there is a lack of understanding about their features and limitations. These tools provide fast simulation of RFIC's. However, no single tool delivers a complete solution for RFIC design. This paper describes the shortcomings of conventional SPICE-like simulators and the analyses required for RF applications with an emphasis on accurate and efficient simulation of distortion and noise. Various analysis methods, such as harmonic balance, shooting method, mixed frequency-time methods, and envelope methods, that are currently available for RFIC simulation are presented. Commercial simulators are compared in terms of their functionalities and limitations. The key algorithmic features and the simulator-specific terminology are described.

Periodic Steady-State Analysis of Oscillators with a Specified Oscillation Frequency

“…Based on this description the difference between the conventional and proposed PSS analyses in terms of the problem formulation and performance is explained. In Section III a discrete-time oscillator representation suitable for computer simulation [4] is presented. Based on this model a finite difference method for PSS analysis with a specified frequency is presented.…”

Two-dimensional semiconductor device simulation of trap-assisted generation-recombination noise under periodic large-signal conditions and its use for developing cyclostationary circuit simulation models

“…T HE FREQUENCY conversion of noise under periodic large-signal conditions is of active interest to both the device physics and circuit design communities [1], [2]. It has a significant effect on the performance of wireless communications circuits, such as the spectral purity of oscillators and the noise figure of mixers.…”

Simulating Multi-tone Free-Running Oscillators with Optimal Sweep Following

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