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Correlation of Drain Current Pulsed Response with Microwave Power Output in AlGaN/GaN HEMTs

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Abstract

The drain-current response to short (<1μs) gate pulses has been measured for a series of GaN HEMT wafers that have similar dc and small-signal characteristics. This response has been found to correlate well with the measured microwave power output. For example, for devices where the pulsed drain current is greater than 70% of the dc value, output power densities of up to 2.3 W/mm are attained. This is in contrast with 0.5 W/mm measured for devices with low pulse response (less than 20% of the dc value). These results, which can be explained by the presence of traps in the device structure, provide a convenient test which is predictive of power performance.

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Authors and Affiliations

  1. Naval Research Laboratory, Washington, D. C., 20375, USA

    S. C. Binari, K. Ikossi-Anastasiou, W. Kruppa, H. B. Dietrich, G. Kelner, R. L. Henry, D. D. Koleske & A. E. Wickenden

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  1. S. C. Binari
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  2. K. Ikossi-Anastasiou
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  3. W. Kruppa
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  4. H. B. Dietrich
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  5. G. Kelner
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  6. R. L. Henry
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  7. D. D. Koleske
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  8. A. E. Wickenden
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Binari, S.C., Ikossi-Anastasiou, K., Kruppa, W. et al. Correlation of Drain Current Pulsed Response with Microwave Power Output in AlGaN/GaN HEMTs. MRS Online Proceedings Library 572, 541 (1999). https://doi.org/10.1557/PROC-572-541

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  • DOI: https://doi.org/10.1557/PROC-572-541

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