Florian A. Maier

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A spherical near-field antenna measurement facility employing a time domain hardware gating technique is presented. On-off keyed sinusoidal impulses are used as stimuli requiring wideband antennas with a bandwidth in excess of 400 MHz. The received signal is evaluated in the time interval after reaching the steady state and before multipath components(More)
This paper describes a novel simple, however highly versatile harmonic source-pull/load-pull approach for high-power applications in the kilowatt range at frequencies of up to 500MHz. The proposed concept eliminates almost all frequency selective components by removing all filters except the bias tees, hereby enabling very quick changes of the operating(More)
This paper investigates a novel AlGaN/GaN HEMT-based high power amplifier for continuous wave operation in industrial power applications. A GaN HEMT device with a power density of 50 W/mm<sup>2</sup> was developed to counter specific challenges in these applications. Based on RF load-pull measurements of the developed transistors an inverse class-F power(More)
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