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Computer-aided circuit analysis tools for RFIC simulation: Algorithms, features, and limitations
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DOI：10.1109/82.839663.png)
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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.
Keyword:
circuit simulation
cyclostationary noise
distortion
envelope method
frequency-domain methods
harmonic distortion
intermodulation
linear time-varying analysis
mixed frequency-time methods
mixer noise
noise
periodic steady-state
phase noise
quasiperiodic steady-state
RFIC simulation
SPICE harmonic balance
shooting method
time-domain methods
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