Product category:
Test Accessories
News Release from: Link Microtek | Subject: Focus MPT
Edited by the Electronicstalk Editorial
Team on 28 March 2006
Tuner sets standard for microwave
testing
A multipurpose electromechanical microwave tuner provides a versatile load-pull system for characterising transistors and facilitating the optimisation of amplifier matching network designs.
Link Microtek, the exclusive UK distributor for Canadian manufacturer Focus Microwaves, has introduced the MPT multipurpose electromechanical microwave tuner, which provides a versatile load-pull system for characterising transistors and facilitating the optimisation of amplifier matching network designs Equipped with three programmable, independently adjustable RF probes, the MPT allows impedance tuning at a fundamental frequency and two harmonics over a wide bandwidth
This article was originally published on Electronicstalk on 4 Jan 2002 at 8.00am (UK)
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Five different models are available, offering fundamental frequency ranges of 0.8-6.4, 1.8-10.0, 2.4-18.0, 10-40 and 14-50GHz.
In addition to this unrivalled capability as a harmonic tuner, the MPT can also be used as a high-VSWR prematching tuner, as an ultrawideband tuner, and as an ultrastable tuner for on-wafer applications.
The MPT tuner technology is the only one to offer such capabilities in a single compact system.
Each of the three metallic probes in the Focus MPT is coupled capacitively to the central conductor of a slotted slabline in order to produce a variable reflection factor.
Moving the probes downwards into the slabline increases the amplitude of the reflection factor, and moving them horizontally changes the phase.
Depending on the frequency range and connector used, the MPT provides a high VSWR of up to 100:1, a power handling capability of up to 200W CW and a resolution of several million tunable points at any frequency.
Calibration and tuning algorithms within the Focus MPT software greatly simplify the calibration process by automatically generating all the possible combinations of points for each set of harmonic frequencies.
Calibration data are saved to a file typically only 60 to 120Kbyte in size and are retrieved from memory during operation of the MPT.
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