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E8881A Former Product Number

Product Status: Obsolete
This product is no longer available


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Note: Model number E8881A has been discontinued; however, the Linear Simulator feature/capability is now included in the W2200 Advanced Design System (ADS) Core.

The information below is provided for reference only.

E8881A Linear Simulator is a frequency-domain circuit simulator that analyzes a large variety of RF and microwave circuits operating under linear conditions.

Amplifiers, passive circuits (for example filters, impedance matching networks), oscillator small-signal loop gain, and nonlinear devices are evaluated at the DC operating point and driven by small-signal excitation.

Keysight's linear simulator includes an extensive set of component libraries, advanced convergence, model generation, and optimization technologies that help to accelerate the design process.

Product Highlights:

  • Microstrip, stripline, finline, and coplanar waveguide models.
    For a complete list of ADS models, click on the following link: <>
  • Includes Model Composer, a unique, patented, EM-based modeling method, which provides EM accuracy and generality at circuit simulation speed. Model types include standard interconnect components such as opens, stubs, bends, crosses, and tees on custom substrates
  • User-defined linear models and output equations can be created, enhancing design flexibility
  • Generalized noise analysis with temperature
  • Back-annotation of the DC solution at each node, directly onto the schematic, without having to re-simulate
  • Advanced circuit optimization with programmable and swept optimization for maximizing circuit performance
  • Monte Carlo analysis to predict manufacturing yield prior to production
  • Powerful data display commands allow the creation of many useful statistical plots and histograms
  • Symbolically-Defined Device (SDD) and Frequency-Defined Device (FDD) models to allow simulation of both large and small= signal behaviors for nonlinear devices and high-level circuit blocks, such as mixers and amplifiers without having to write C code
  • Platform Computing Load Sharing Facility (LSF) supports the following options:
    -Find the fastest available server and run
    -Run simultaneous simulations
    -Distributed Processing. Most efficient for sweeps that don't require the solution of the previous run.
  • Variable Equations (VAREQN) variables may now be referenced in Measurement equations (MEASEQN) and Optimization/Yield/DOE (Design of Experiments) controllers
  • Measurement equations can access the contents of any existing dataset. This feature is very useful in optimization and yield analysis where goals/specs make direct reference to existing data. The data may be generated from a previous simulation, or from an external source, such as another simulator, or an instrument. Includes Microwave Transistor Library, RF Transistor Library, High Frequency Diode Library, Analog Parts Library, RF Passive SMT Library, Murata SMT Library and RF Systems Library.
  • Advanced statistical design capability aids in optimizing performance and production yield. Features include automatic normalization of sensitivity analysis output and optional run of final analysis after optimization run completion. For more information see <>

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Product Description:
E8881A Linear Frequency Domain Circuit Simulator is used to analyze and optimize RF and microwave circuits (for example, amplifiers, oscillators, couplers, filters, and matching networks) that operate under linear conditions.

The technology can be applied to the design of any passive and small-signal active circuits used in wireless, RF, microwave, surveillance, radar, and other communication applications.

When a schematic of the circuit has been created, the linear simulator allows you to check the topology automatically for unconnected pins and wires. The simulator then performs all necessary linear measurements such as S-, Z-, Y-, and H-parameters, circuit impedance and admittance, reflection coefficients and VSWR, gain, loss, noise, unilateral gain, noise figure, input/output noise temperature, group delay, stability factor, stability measure, and noise gain stability circles. In addition, the simulator can perform Swept Parameter Analysis, such as noise figure versus a change in a component value.