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E8883A Former Product Number

Product Status: Obsolete
This product is no longer available

A replacement for this product is available:


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Note: Model number E8883A has been discontinued; however, the Circuit Envelope Simulator feature/capability is now included in the W2301 Circuit Envelope Element.

The information below is provided for reference only.

E8883A Circuit Envelope Simulator provides an efficient simulation technique for the complex digitally modulated RF signals found in today's wireless circuits.

Typical analyses and measurements include:

  • Pseudo-random digitally modulated RF solutions
  • ACPR, EVM, PAE simulation and optimization
  • Transient RF solutions
  • PLL frequency vs. time analysis (lock time)
  • AGC, PLL transient response (ringing, settling, overshoot, etc.) simulation and optimization
  • High order (5th, 7th, 9th) mixer inter-modulation product analysis

As the first mixed-domain simulator Keysight's Circuit Envelope continues to provide industry-leading innovations that speed simulation and shorten development time.

Product Highlights:

  • New Automatic Verification Modeling capability enables fast co-simulation with the Ptolemy Data Flow simulator and results in up to a 100 X+ simulation speed improvement with high accuracy. This new feature makes some large-scale verification processes a reality.
    Click on the following link for details: <>
  • Simulates sophisticated modulated signals in high frequency circuits whose characterization was previously impractical or impossible with SPICE or Harmonic Balance
  • Speeds the design of modern communication circuits based on 2G and 3G technologies such as WCDMA, EDGE, 3GPP, and Wireless LAN
  • Optimizes circuits in the time-domain for best modulation characteristics, such as VCO frequency settling time
  • Advanced <> including programmable and swept optimization, Monte Carlo Yield analysis, sensitivity and mismatch analysis, and correlation technique, all with powerful display features and sensitivity histograms.
  • Characterizes RF feedback loops to aid in the design of phase locked loops and Automatic Gain Control circuits
  • Efficiently analyzes higher order (3rd, 5th, 7th) mixer intermodulation products and predicts spectral re-growth of amplifiers and mixers
  • 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 can be very useful in optimization and yield analysis where goals/specs can 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.

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Product Description:
The E8883A Circuit Envelope simulator analyzes amplifiers, mixers, oscillators, and feedback loops in the presence of modulated or transient high-frequency signals.

Circuit Envelope's technology lets you analyze complex RF signals by employing a hybrid time- and frequency domain approach. It samples the modulation envelope (amplitude and phase, or I and Q) of the carrier in the time domain and then calculates the discrete spectrum of the carrier and its harmonics for each envelope time sample.

Thus, the output from the simulator is a time-varying spectrum from which useful information, such as PLL frequency vs. time transients, ACPR (adjacent channel power ratio), EVM (error vector magnitude) and NPR (noise power ratio) can be derived.