A Mixed-Signal Circuit Technique for Cancellation of Multiple Modulated Spurs in 4G/5G Carrier Aggregation Transceivers

被引：5

作者：

Sadjina, Silvester ^{[1
,2
]}

Kanumalli, Ram Sunil ^{[1
]}

Dufrene, Krzysztof ^{[1
]}

Huemer, Mario ^{[2
]}

Pretl, Harald ^{[1
,3
]}

机构：

[1] Intel DMCE, A-4040 Linz, Austria

[2] Johannes Kepler Univ Linz, Christian Doppler Lab Digitally Assisted RF Trans, A-4040 Linz, Austria

[3] Johannes Kepler Univ Linz, Inst Integrated Circuits, A-4040 Linz, Austria

来源：

IEEE SOLID-STATE CIRCUITS LETTERS | 2019年 / 2卷 / 11期

关键词：

5G mobile communication; carrier aggregation (CA); interference cancellation; long-term evolution (LTE)-advanced; mixed-signal cancellation; modulated blocker; modulated spur; TX leakage;

D O I：

10.1109/LSSC.2019.2929025

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In carrier-aggregation 4G/5G transceivers local-oscillator spurs are generated which may down-convert any interferer located at the spurious frequencies. A mixed-signal circuit recreates the spur building laws by multiphase mixing and provides replica of multiple blocker-induced distortions without prior knowledge of their carrier frequencies. This technique, implemented in 28-nm CMOS, can cancel multiple spurious receive products by up to 33 dB for blocker power levels of up to -10 dBm at the LNA input.

引用

页码：260 / 263

页数：4

共 4 条

[1] A Mixed-Signal Technique for TX-Induced Modulated Spur Cancellation in LTE-CA Receivers
Elmaghraby, Ahmed
Kanumalli, Ram Sunil
Schelmbauer, Werner
Mayer, Andreas
Herzinger, Stefan
Schwartz, Daniel
Huemer, Mario
Weigel, Robert
[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2018, 65 (09) : 3060 - 3073
[2] A low-power multiplying DLL for low-jitter multigigahertz clock generation in highly integrated digital chips
Farjad-Rad, R
Dally, W
Ng, HT
Senthinathan, R
Lee, MJE
Rathi, R
Poulton, J
[J]. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2002, 37 (12) : 1804 - 1812
[3] A Noise-Cancelling Receiver Resilient to Large Harmonic Blockers
Murphy, David
Darabi, Hooman
Xu, Hao
[J]. IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2015, 50 (06) : 1336 - 1350
[4] A Mixed-Signal Circuit Technique for Cancellation of Interferers Modulated by LO Phase-Noise in 4G/5G CA Transceivers
Sadjina, Silvester
Kanumalli, Ram Sunil
Gebhard, Andreas
Dufrene, Krzysztof
Huemer, Mario
Pretl, Harald
[J]. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2018, 65 (11) : 3745 - 3755

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