Network Synthesis

Add-on module for synthesizing matching-circuit topologies for amplifiers and antennas
Network Synthesis

Synthesis Wizards

Network synthesis is a key component of the synthesis wizards (SWS) module for synthesizing matching-circuit topologies.  It helps amplifier designers and front-end system integrators save time developing impedance matching for optimal performance.

The network synthesis wizard works by automatically creating optimized two-port impedance-matching networks. The user specifies the maximum number of sections and types of components to searchthe evolutionary algorithm then finds the best circuit topologies and optimizes component parameter values.

The Network Synthesis Advantage
Powerful
Powerful

Proprietary genetic optimization supports challenging multi-band and broadband impedance-matching designs.

Faster Design
Fast

Provides designers with a rapid design start based on multiple possible solutions to achieve their matching goals.

Efficient
Efficient

Easy-to-use, interactive interface guides designers through data-driven matching circuit development.

Features at a Glance

  • Specify – Designers can interactively develop an unlimited number of networks optimized for noise, power, or matching networks
  • Synthesize – A default impedance or the impedance of the desired source/load network can be specified, as well as the desired match frequencies
  • Analyze  Optimum reflection coefficients can be specified over frequency and can be provided in the form of load-pull data, network-parameter data files, or circuit schematics
  • Integrate – Designers can insert synthesized matching circuits directly into an NI AWR Design Environment project for (single or multiple) placement(s) within an existing network

Applications

Load-Pull Matching Networks

Power amplifier (PA) performance is largely driven by factors such as transistor size and technology, biasing, and load impedance. Load-pull analysis provides designers with an intuitive means to visualize PA performance and load conditions. The wizard interfaces directly with simulated or measured load-pull data within a Microwave Office circuit simulation project for instances where designers want to develop matching networks based on nonlinear, load-sensitive performance data. This supports development of the matching networks that provide optimal output power, power-added efficiency (PAE) , linearity, and other critical performance metrics.

Interstage Amplifier Matching

To achieve the required overall gain of an amplifier stage or provide sufficient drive signal to a high-power device, amplifiers are frequently cascaded to form a single, multi-stage component. Whether designing a monolithic microwave integrated circuit (MMIC) or printed-circuit board (PCB) solution, the output and input impedance of the first stage will likely need to be transformed to the appropriate impedance as seen by the source of the next device in the amplifier chain. The network synthesis wizard supports interstage matching-circuit creation between two networks (first and second amplifier stages).

RF Component and Antenna Matching

The input/output impedances of RF components are frequently transformed to a network characteristic impedance (often 50 ohms). The wizard helps optimize return loss for non-50-ohm devices such as antennas and other RF front-end components, allowing maximum power transfer between components in a 50-ohm (or other alternate characteristic impedance) RF signal path.