'Test_Xformer_2p' schematic combines Ports 1, 2, and 3 so that an optimization can be done with their combined impedance to a specified load impedance. With the EXTRACT block disabled, circuit models are used.ġ) The STACKUP needs to be correctly set up for EM extractionĢ) The EXTRACT Block needs to have Hierarchy set to ' On' if the schematic and AXIEM simulations are needed at higher levels of a circuit With the EXTRACT block enabled, 'AXIEM_Extract_Doc' simulation results are used in place of the circuit models in the 'TwoStageQuarterWaveTransformer_4p' schematic. Then Right-Click the EXTRACT block again and select Add Extraction generate the 'AXIEM_Extract_Doc' EM structure. To extract the layout, Right-Click the EXTRACT block in the 'TwoStageQuarterWaveTransformer_4p' schematic and select Toggle Enable.

The schematic elements are only being used for their layout during extraction which is valid since AXIEM will provide the correct electrical model for the entire structure. Certainly many of these elements are being used in a manner that either invalidates their distributed electrical model or is out of the models validity range. MTEE.T元 and MTEE.TL6 are used only to match the gap width and most probably would never be used in this way for an accurate electrical model of the structure. Notice that the construction of the mode suppression gaps in the first transformer stage is created using the M3CLIN, MBENDRWX, MCROSS, and MLIN elements in order to create correct layout. 'TwoStageQuarterWaveTransformer_4p' schematic is constructed from standard microstrip elements. For simulation of of large sturctures, such as this dual stage quarter-wave transformer (half-wavelenth long), AXIEM does not have box resonances that can occur for electrically large structures using a gridded solver such as EMSight. In addition to speed, another advantage of AXIEM is that it is an open boundary solver. In this example, schematic elements are used to construct layout that is extraced to an AXIEM EM structure that provides an accurate electrical model. This project shows an example of a simulation and EM Optimization of a quarter-wave transformer using Extraction.ĪXIEM is a mesh efficient solver, and simulations of very large structures are fast enough for EM optimization. Quarter-Wave Transformer with AXIEM Extraction and Optimization Make sure to select the Help > Enable Guided Help from the menus before clicking this button. You can also open the project directly from this page using this button. from the menus and type either the example name listed above or one of the keywords at the bottom of this page.

Quarter wave transformer smith chart