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

Silvester Sadjina; Krzysztof Dufrene; Ram Sunil Kanumalli; Mario Huemer; Harald Pretl

doi:10.1109/Austrochip.2017.21

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

Silvester Sadjina, Krzysztof Dufrene, Ram Sunil Kanumalli, Mario Huemer, Harald Pretl

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

Abstract

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.

Original language	English
Title of host publication	Proceedings of Austrian Workshop on Microelectronics (Austrochip 2017)
Publisher	IEEE
Pages	23-28
Number of pages	6
ISBN (Print)	978-1-5386-3583-4
DOIs	https://doi.org/10.1109/Austrochip.2017.21
Publication status	Published - Oct 2017

Fields of science

202040 Transmission technology
202 Electrical Engineering, Electronics, Information Engineering
202015 Electronics
202022 Information technology
202023 Integrated circuits
202028 Microelectronics
202030 Communication engineering
202037 Signal processing

JKU Focus areas

Computation in Informatics and Mathematics
Mechatronics and Information Processing

Access to Document

10.1109/Austrochip.2017.21

Cite this

@inproceedings{2a630949dae044f694a361a59bc60734,

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

abstract = "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{\textquoteright}s noise figure is restored to a value within 0.1 dB of the reference value.",

author = "Silvester Sadjina and Krzysztof Dufrene and Kanumalli, {Ram Sunil} and Mario Huemer and Harald Pretl",

year = "2017",

month = oct,

doi = "10.1109/Austrochip.2017.21",

language = "English",

isbn = "978-1-5386-3583-4",

pages = "23--28",

booktitle = "Proceedings of Austrian Workshop on Microelectronics (Austrochip 2017)",

publisher = "IEEE",

}

A Circuit Technique for Blocker-Induced Modulated Spur Cancellation in 4G LTE Carrier Aggregation Transceivers. / Sadjina, Silvester; Dufrene, Krzysztof; Kanumalli, Ram Sunil et al.
Proceedings of Austrian Workshop on Microelectronics (Austrochip 2017). IEEE, 2017. p. 23-28.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

TY - GEN

T1 - A Circuit Technique for Blocker-Induced Modulated Spur Cancellation in 4G LTE Carrier Aggregation Transceivers

AU - Sadjina, Silvester

AU - Dufrene, Krzysztof

AU - Kanumalli, Ram Sunil

AU - Huemer, Mario

AU - Pretl, Harald

PY - 2017/10

Y1 - 2017/10

N2 - 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.

AB - 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.

UR - http://ieeexplore.ieee.org/document/8114743/

U2 - 10.1109/Austrochip.2017.21

DO - 10.1109/Austrochip.2017.21

M3 - Conference proceedings

SN - 978-1-5386-3583-4

SP - 23

EP - 28

BT - Proceedings of Austrian Workshop on Microelectronics (Austrochip 2017)

PB - IEEE

ER -

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

Abstract

Fields of science

JKU Focus areas

Access to Document

Other files and links

Christian Doppler Laboratory for Digitally Assisted RF Transceivers for Future Mobile Communications

Cite this

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

Abstract

Fields of science

JKU Focus areas

Access to Document

Other files and links

Projects

Christian Doppler Laboratory for Digitally Assisted RF Transceivers for Future Mobile Communications

Cite this