A Cellular Receiver Front-End with Blocker Sensing

Mohammed Abdulaziz, Waqas Ahmad, Anders Nejdel, Markus Törmänen, Henrik Sjöland

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

5 Citations (SciVal)


A receiver front-end supporting contiguous and non-contiguous intra-band carrier aggregation scenarios with a fully integrated spectrum sensor that can detect both in-gap and out-of-band blockers has been implemented in 65nm CMOS technology. An NF of 2.5dB is achieved using a noise canceling LNTA, and linearized OTAs are used to achieve an IIP3 improvement of up to 6.5dB in-band and 11dB at the filter band edge. The spectrum sensor can detect blocker levels in 22 steps of 9MHz between -100MHz and 100MHz IF. The system consumes between 36.6mA and 57.6mA from a 1.2V supply.
Original languageEnglish
Title of host publicationIEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2016
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)978-1-4673-8651-7
Publication statusPublished - 2016
EventIEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2016 - San Francisco, CA, United States
Duration: 2016 May 22 → …


ConferenceIEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2016
Country/TerritoryUnited States
CitySan Francisco, CA
Period2016/05/22 → …

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering


  • Operational amplifier
  • linearization techniques
  • noise cancellation
  • receiver
  • active filter
  • carrier aggregation


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