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Article

Digitally-Compensated Wideband 60 GHz Test-Bed for Power Amplifier Predistortion Experiments

Department of Radio Electronics, Brno University of Technology, 61600 Brno, Czech Republic
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Author to whom correspondence should be addressed.
Sensors 2021, 21(4), 1473; https://doi.org/10.3390/s21041473
Received: 31 December 2020 / Revised: 11 February 2021 / Accepted: 12 February 2021 / Published: 20 February 2021
(This article belongs to the Section Communications)
Millimeter waves will play an important role in communication systems in the near future. On the one hand, the bandwidths available at millimeter-wave frequencies allow for elevated data rates, but on the other hand, the wide bandwidth accentuates the effects of wireless front-end impairments on transmitted waveforms and makes their compensation more difficult. Research into front-end impairment compensation in millimeter-wave frequency bands is currently being carried out, mainly using expensive laboratory setups consisting of universal signal generators, spectral analyzers and high-speed oscilloscopes. This paper presents a detailed description of an in-house built MATLAB-controlled 60 GHz measurement test-bed developed using relatively inexpensive hardware components that are available on the market and equipped with digital compensation for the most critical front-end impairments, including the digital predistortion of the power amplifier. It also demonstrates the potential of digital predistortion linearization on two distinct 60 GHz power amplifiers: one integrated in a direct-conversion transceiver and an external one with 24 dBm output power. View Full-Text
Keywords: millimeter-wave systems; I/Q mismatch compensation; digital predistortion; RF impairments millimeter-wave systems; I/Q mismatch compensation; digital predistortion; RF impairments
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MDPI and ACS Style

Pospíšil, M.; Maršálek, R.; Götthans, T.; Urbanec, T. Digitally-Compensated Wideband 60 GHz Test-Bed for Power Amplifier Predistortion Experiments. Sensors 2021, 21, 1473. https://doi.org/10.3390/s21041473

AMA Style

Pospíšil M, Maršálek R, Götthans T, Urbanec T. Digitally-Compensated Wideband 60 GHz Test-Bed for Power Amplifier Predistortion Experiments. Sensors. 2021; 21(4):1473. https://doi.org/10.3390/s21041473

Chicago/Turabian Style

Pospíšil, Martin, Roman Maršálek, Tomáš Götthans, and Tomáš Urbanec. 2021. "Digitally-Compensated Wideband 60 GHz Test-Bed for Power Amplifier Predistortion Experiments" Sensors 21, no. 4: 1473. https://doi.org/10.3390/s21041473

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