On-chip sensing and actuation methods for integrated self-healing mm-wave CMOS power amplifier

Kaushik Sengupta, Kaushik Dasgupta, Steven M. Bowers, Ali Hajimiri

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

16 Scopus citations

Abstract

This paper presents various low power, compact, low insertion-loss sensors with digitized ADC output and digitally controlled actuation methods for on-chip characterization and healing of a mm-Wave power amplifier. We demonstrate low insertion loss (0.4dB) RF sensors which measure true input and output power in presence of load variations and very low-headroom (10-30mV) DC sensors with built-in regulators and thermal sensors as methods for measuring PA efficiency. All sensor outputs are digitized by a SAR-based ADC for communication with a central digital core. The paper also presents digitally controlled combiner tuning and PA bias actuation. The circuits are implemented in 45 nm SOI CMOS and enable full on-chip digitally controlled characterization and actuation of the PA with a power overhead of less than 6%.

Original languageEnglish (US)
Title of host publicationIMS 2012 - 2012 IEEE MTT-S International Microwave Symposium
DOIs
StatePublished - Oct 3 2012
Externally publishedYes
Event2012 IEEE MTT-S International Microwave Symposium, IMS 2012 - Montreal, QC, Canada
Duration: Jun 17 2012Jun 22 2012

Other

Other2012 IEEE MTT-S International Microwave Symposium, IMS 2012
CountryCanada
CityMontreal, QC
Period6/17/126/22/12

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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