A digital mm-Wave PA architecture with Simultaneous Frequency and back-off Reconfigurability

Chandrakanth R. Chappidi, Xue Wu, Kaushik Sengupta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

Spectrally-efficient operation with high power and high efficiency at deep back-off will be critical for the next-generation mm-Wave transmitters for 5G and beyond. In addition, as larger non-contiguous chunks of the mm-Wave spectrum open up, dynamic frequency reconfiguration while ensuring high spectral and energy efficiency can become key towards optimal utilization of spectral resources. In this paper, we present a generalized asymmetrical multi-port combiner based network synthesis approach that enables both frequency and back-off reconfigurability in a mm-Wave power amplifier (PA) architecture to maintain high-efficiency operation with spectrally efficient codes across a wide frequency range. As a proof of concept, a silicon-based PA is presented which operates between 30-55 GHz with peak Psat of 23.7 dBm at 40 GHz and output collector efficiency (ηout) of 34.5 % and 22% at the 0 and -6 dB back-off respectively. The PA maintains ηout > 16% at -6 dB back-off across the range. Non-constant modulation is demonstrated with pulse shaping and with data rates upto 4 Gbps across the frequencies from 30-50 GHz.

Original languageEnglish (US)
Title of host publicationRFIC 2017 - Proceedings of the 2017 IEEE Radio Frequency Integrated Circuits Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages328-331
Number of pages4
ISBN (Electronic)9781509046263
DOIs
StatePublished - Jul 5 2017
Event2017 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2017 - Honolulu, United States
Duration: Jun 4 2017Jun 6 2017

Other

Other2017 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2017
CountryUnited States
CityHonolulu
Period6/4/176/6/17

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Chappidi, C. R., Wu, X., & Sengupta, K. (2017). A digital mm-Wave PA architecture with Simultaneous Frequency and back-off Reconfigurability. In RFIC 2017 - Proceedings of the 2017 IEEE Radio Frequency Integrated Circuits Symposium (pp. 328-331). [7969084] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/RFIC.2017.7969084