Genesys Products - Match Synthesis Module

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Genesys Match saves designers time and improves high-frequency system performance by creating impedance matching networks for challenging single and multi-stage applications. It is especially valuable for matching difficult impedances, frequency-dependent loads, non-unilateral devices, and matching over a wider bandwidth. It improves the productivity of RF engineers of every skill level.

If you use a Smith Chart, you need Genesys Match

It all starts with the Smith Chart. A reflection coefficient plotted on a Smith Chart is the most recognizable measurement of the RF community, because it indicates something about power transfer. Impedance matching minimizing reflections, which maximizes power transfer, and therefore system performance. Therefore, creating impedance matching networks is one of the most common tasks of the RF engineer. Every RF designer who uses a Smith Chart will benefit from Genesys Match, regardless of experience or skill.

Genesys Match is an indispensable productivity tool

Genesys Match starts with an input specification of a frequency-dependent device, and the frequency-dependent complex terminations on either side of that device. The device may be a raw S-parameter file, a stabilized nonlinear device with a bias network and feedback, or a complex Genesys subcircuit. The terminations may also be complex frequency-dependent S-parameter data, one of 9 RLCX combinations, or simply 50 ohms. Genesys Match then synthesizes one of 8 lumped or distributed topologies for each of the matching networks in between the terminations and devices to achieve the best power transfer over the specified frequency range.

Genesys Match has additional capabilities for experienced engineers

In the case of a multi-stage amplifier, the user can cascade additional imperfect devices (each having |S12|>0). Because the devices are not unilateral, the matching networks in between the devices will interact, and the mathematics quickly becomes a burden to the engineer. Genesys Match determines the best values for all matching networks simultaneously, using its own algorithms and iterative search methods, to maximize the overall system S21.

Genesys Match matches impedances under more challenging conditions:

• frequency-dependent loads, such as transistors, diodes & switches, antennas, and larger circuits
• difficult devices such as low impedance power FETs
• wider bandwidth, such as needed for a multi-band front end
• either RF or microwave devices
• when the user uncertain whether to choose lumped or distributed techniques

Tightly integrated within Genesys, but adds easily to any RF design flow

Genesys Match produces passive subcircuits no different from any other circuits within the Genesys environment. If a matching network has been created using ideal transmission lines and stubs, then the Genesys Advanced TLine Synthesis module can quickly convert them to one of 13 physical implementations, such as microstrip, stripline or coplanar waveguide. Genesys Match also benefits from access to monte carlo, yield, tuning, SMT parts libraries, layout, EM simulators, and excellent plotting capability within the Genesys environment.

Finally, Genesys is able to export matching networks to the Agilent Advanced Design System (ADS) environment, or to an intermediate file format, for importation into other tools. Genesys Match is affordable, easy to use, and can add value to any RF design flow.

What matching networks can I Design with Genesys Match Synthesis?

• Between multi-stage amplifiers, or ganged PIN switches
• Between an LNA to the measured S11 of an Antenna plus its coaxial cable
• Between a power FET and its optimum impedance, determined by a load-pull
• Before and after a stabilized nonlinear transistor circuit, with active bias
• After a connector, launch, or probe to return to 50 ohms

How is Genesys Match Synthesis available?

• Added to any current Genesys environment
  The W1506L Genesys Match Synthesis module can be easily added to any particular Genesys environment or license key that is current on maintenance.
• Included in Genesys Design Bundles
  It is included in the Designer Pro, Integrated, and Genesys Virtual VNA bundles
• For ADS users
  It is included in the Genesys Synthesis for ADS and RF Architect for ADS bundles
Genesys Match Synthesis was also included in several older Genesys configurations, which are now in their support life. (W1403, W1404, W1405, W1406, W1412, W1413, W1414). Refer to the Bundle Viewer for more details.

Genesys Match Synthesis interacts with other modules

• Genesys Core is the only software requirement for Match Synthesis
• Match Synthesis works especially well with Equalize Synthesis, and Advanced TLine Synthesis
• Testlink can be used to import measured S-parameter data directly from a vector network analyzer, and used as a termination condition in the lab. The W1430L Virtual VNA bundle is ideal for this task.

Online Demos and Tutorials

• Match Walkthrough, March 2003