A Systematic Analog Verification Approach Using Analog FastSPICE Harmonic Balance
Analog FastSPICE RF Harmonic Balance Offerings
The AFS Harmonic Balance suite comprises of large signal HB analysis and small signal noise (HBNOISE), AC (HBAC), stability (HBSTB), scattering parameter (HBSP) and transfer function (HBXF) analyses. While single tone is supported for driven circuits and autonomous circuits, multi-tone (2-4) is supported for driven circuits.
For superior accuracy and performance on linear and moderately nonlinear circuits, the AFS HB solvers are further optimized for performance and convergence via automated intelligence algorithms, with no compromise in accuracy. Nanometer RF circuit design requires extensive sweeps, corners, and Monte Carlo analysis. AFS HB utilizes multithreaded capability for an additional performance speedup versus single core operations. Integrated with Solido™ Variation Designer software, the AFS platform addresses comprehensive corner variation results efficiently. It allows a more effective verification that provides accuracy with a lesser number of simulations across all environmental corners, reducing the RF simulation complexity.
The Harmonic Balance method computes the periodic steady state of the circuit utilizing the frequency-domain, similar to the Shooting Newton method, which utilizes the time-domain. After a periodic steady-state solution is found, small signal analyses such as HB noise can also be run.