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Träfflista för sökning "WFRF:(Zampardi Peter J.) "

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1.
  • Buisman, Koen, 1978, et al. (author)
  • Emulation of a Multi-Stage Differential Amplifier Using one Single-Ended Device-Under-Test
  • 2021
  • In: 2021 96TH ARFTG MICROWAVE MEASUREMENT CONFERENCE (ARFTG): MEASUREMENT TECHNIQUES FOR ACCELERATING THE DESIGN OF 5G CIRCUITS AND SYSTEMS.
  • Conference paper (peer-reviewed)abstract
    • A method to emulate multi-stage power amplifier (PA) architectures is presented. The technique predicts multi-stage PA performance. The method is based on an iterative procedure using transistor/branch PA active load-pull measurements to include inter-stage interaction. As a benefit, real-world performance of a multi-stage PA can be evaluated early in the design process. Compared to previous published work, the method requires only a single representative device-under-test to embody multi-stage architectures. Thus, a compelling measurement method for PA designers is presented. The method is demonstrated by emulating a two-stage differential amplifier at 2.14 GHz using single-tone signals.
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2.
  • Buisman, Koen, 1978, et al. (author)
  • Mixed-Mode Active Load-Pull Using one Single-Ended Device-Under-Test
  • 2021
  • In: 2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications, PAWR 2021. ; , s. 20-23
  • Conference paper (peer-reviewed)abstract
    • A method to emulate differential transmitter architectures is presented. The technique, which is based on mixed-mode active load-pull measurements, predicts power amplifier (PA) performance while avoiding the need to manufacture the complete PA. The method is based on an iterative procedure using transistor/branch PA active load-pull measurements together with the S-parameters of the load network. Advantageously, real world performance of the complete differential PA can be evaluated in the design stage. Thereby, many different output combiners and configurations, e.g., biases, transistors, and branch phases, can be fully evaluated without fabrication. Compared to prior art, the method requires only a single representative device-under-test, while providing flexibility in the input signal and the target load network. Thus, a novel powerful measurement tool for PA designers is presented. The technique is demonstrated by performing mixed-mode load-pull and emulating a differential amplifier at 2.14 GHz using continuous wave signals.
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