A Circuit Technique for Blocker-Induced Modulated Spur Cancellation in 4G LTE Carrier Aggregation Transceivers

  • Silvester Sadjina (Speaker)
  • Krzysztof Dufrene (Speaker)
  • Ram Sunil Kanumalli (Speaker)
  • Huemer, M. (Speaker)
  • Pretl, H. (Speaker)

Activity: Talk or presentation › Contributed talk › science-to-science

Description

In this paper, we propose a novel mixed-signal cancellation circuit for LTE carrier aggregation receivers targeting modulated spur interference. This circuit senses interference via an auxiliary analog path, and generates a reference signal for the adaptive digital cancellation. To evaluate the performance of the proposed technique, a demonstrator, realized in 28nm LP CMOS, is shown with a cancellation of over 20 dB and low impact on the main path while consuming 14.3mW. Measurement results show that the receiver?s noise figure is restored to a value within 0.1 dB of the reference value.
Period12 Oct 2017
Event titleAustrochip 2017
Event typeConference
LocationAustriaShow on map

Fields of science

  • 202 Electrical Engineering, Electronics, Information Engineering
  • 102 Computer Sciences

JKU Focus areas

  • Nano-, Bio- and Polymer-Systems: From Structure to Function
  • Mechatronics and Information Processing

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