The iMatch™ module integrated impedance-matching wizard runs seamlessly within the NI AWR Design Environment platform to quickly and easily take users through the process of evaluating different matching topologies and selecting the optimal solution based upon certain user-specified requirements. The iMatch impedance matching wizard uses the iFilter™ wizard interface and can run as a stand-alone option or as an integrated feature with the iFilter option.
The iMatch option within the iFilter wizard interface provides a smart, interactive guide for developing impedance-matching networks.
The iMatch module offers an easy-to-use calculator utility that enables designers to explore component combinations to transform impedances.
iMatch circuits can be directly imported into an NI AWR Design Environment project as subcircuits for further design or integration into a larger network or system.
Features at a Glance
- Interactive – Matching circuits can be developed through manual component selection or by working from a catalog of N-section, pre-configured circuit segments
- Flexible Topologies – A variety of matching-network classes are supported, including Pi and Tee, lumped elements, and distributed matching networks
- Multiple Design Modes – Designers can develop networks manually for greater insight or through the automated mode, where the software calculates the element values for a desired response
- Real-Time Plotting – Instant response plots to give designers a better understanding of resulting performance based on matching-network details
- Integrated – Works with the iFilter wizard and Microwave Office software for direct subcircuit export into a design project
Matching Network Types
Impedance matching minimizes reflections between source and load terminations to maximize power transfer from source to load. In the iMatch module, appropriate reactive terminations (source or load) are simply turned into resistive networks by applying the user-selected cancellation method. These cancellation methods include lumped series and lumped shunt methods or a lumped element approach in which an IND or CAP component is placed next to the termination in either orientation.
Two additional cancellation methods are available for distributed-style matching circuits. The first is a similar approach to the lumped (shunt) cancellation method, except the shunt element is an open-circuit transmission-line stub. The second distributed cancellation method enables a designer to specify the transmission-line characteristics impedance (Zo), and the electrical-line length is then calculated to obtain a purely real input impedance Zin.