RF Network Design

Design RF filters and matching networks starting from high-level specifications. Build arbitrary networks using RF components such as lumped RLC elements and transmission lines characterized by physical properties.

Read and write industry-standard data file formats, such as N-port Touchstone. Cascade S-parameters and use S-parameter data to design RF networks.

RF Analysis

Perform frequency-domain analysis of RF networks to compute metrics such as VSWR, gain, and group delay. Calculate input and output reflection coefficients, stability factors, and noise figure for cascaded components.

Optimize the design of matching networks with local and global optimization algorithms.

Rational Fitting

Use rational fitting algorithms to extract an equivalent Laplace transfer function from frequency domain data, such as S-parameters.

Control the accuracy and the number of poles to manage complexity. Check and enforce passivity of the data and of the fitting. Extract equivalent poles and zeros. Use the resulting fitting for simulation in RF Blockset, or export it as an equivalent Spice netlist or Verilog-A module.

Signal Integrity

Use rational fitting to model linear frequency-dependent components, such as single-ended and differential high-speed transmission lines, or analog components, such as continuous time linear equalizers (CTLE).

Use model order reduction to achieve simpler models for a given accuracy (compared to inverse fast Fourier transform). Enforce zero phase on extrapolation to DC and avoid overfitting of noise. Guarantee the causality and passivity of the system model for time-domain simulation.

Use the channel model with SerDes Toolbox™; alternatively, export it as Simulink blocks, as an equivalent Spice netlist, or as Verilog-A modules for SerDes design.