Adaptive Band Synthesis (ABS)
The Adaptive Band Synthesis (ABS) technique provides a fine resolution response for a frequency band requiring only a small number of analysis points. Em performs a full analysis at a few points and uses the resulting internal, or cache, data to synthesize a fine resolution band.
This technique, in most cases, provides a considerable reduction in processing time.
Using the input frequency band, em first performs a full analysis of the circuit at the beginning and end frequencies. Em continues solving at discrete points, storing the full analysis data for each point. This process continues until enough internal, or cache, data is generated to synthesize a fine resolution response.
Once the frequency band response is synthesized, em outputs approximately 300 data points for the frequency band. These data points are a combination of the discrete analysis points and synthesized points. This combined data is referred to as adaptive data.
Em dedicates the bulk of the analysis time for an ABS analysis in calculating the response data at the discrete data points. Once the adaptive band synthesis is complete, calculating the adaptive data for the entire band uses a relatively small percentage of the processing time.