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Data-acquisition hardware Design software

Load-pull vendors utilise PXI hardware and Labview software from National Instruments

By National Instruments on 6th June 201315th December 2015

Product Details Supplier Info More products

Load-pull product vendors Anteverta Microwave, Focus Microwaves, Maury Microwave and Mesuro are combining their expertise with National Instruments’ (NI’s) PXI hardware and Labview system design software to overcome the increasingly difficult source and load-pull characterisation requirements placed on microwave power amplifiers for aerospace and defence and wireless infrastructure applications.

Load-pull characterisation is an essential tool to increase the efficiency of power amplifiers. Due to time and cost, vendors have historically performed load pull during design. Today, however, the speed and flexibility of a PXI-based system make it possible to verify power amplifier performance during production test.

NI PXI is part of the Labview reconfigurable I/O (RIO) architecture, which includes the latest computing technologies, such as multicore CPUs and FPGAs, and a single, common development language.

Quotes from load-pull providers

‘The high-speed and modulated impedance capabilities we get from using the NI PXI form factor have helped us create a solution that is ideal for power amplifier characterisation during development, pre-production and production testing. Labview greatly simplifies the user-programmability of our system.’ Mauro Marchetti, chief executive officer at Anteverta Microwave
‘Modular PXI products such as the NI vector network analyser simplify the load-pull setup by merging all instruments into a convenient low-cost chassis, which improves overall measurement speed and usability. The system guarantees adaptability as new technologies and modulation schemes emerge because we can add PXI modules ad hoc, and users can modify and script custom load-pull sequences using an NI open-source load pull toolkit in Labview.’ Steve Dudkiewicz, director of marketing and business development at Maury Microwave
‘Using the latest generation of commercial off-the-shelf NI PXI hardware in our Rapid load-pull technique helps our customers test significantly faster compared with traditional test methodologies. It was easy to embed customer-specific signal processing into the on-board FPGA, further speeding up the system performance by using the embedded processor. All this in combination with the PXI RF up-conversion and down-conversion elements allows a smooth operation.’ Simon Mathias, vice-president of sales at Mesuro
‘We are very excited to integrate NI PXI modules into our load-pull solutions. They are compact, fast, cost-effective, adaptable and accurate, and they will enable many features that were previously available only to high-end and expensive setups.’ Zacharia Ouardirhi, general manager at Focus Microwaves

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National Instruments

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National Instruments transforms the way engineers and scientists around the world design, prototype and deploy systems for test, control and embedded design applications. Using NI LabVIEW graphical programming software and modular hardware, customers at more than 30,000 companies annually simplify development, increase productivity and dramatically reduce time to market. From testing next-generation gaming systems to creating breakthrough medical devices to controlling autonomous vehicles, NI customers continuously develop innovative technologies that impact millions of people’s lives.

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