rf education & research
TRANSCRIPT
© Centre for Wireless Communications (CWC), University of Oulu
RF education & research
Aarno Pärssinen
Professor, Radio Engineering, University of Oulu
© Centre for Wireless Communications (CWC), University of Oulu
Cellular modem: LTE Cat4 (150Mbbs DL & 50Mbps U
L), HSPA+, EV-DO, TD-SCDMA)
Application processor
RFIC: 2/3/4G TRx
LB PA
HB PA
UHB PA
3G/2G PA
ET
ANT SW
MB PA
16/64/128GB NAND Flash
WLAN
BT
BT LE
PMIC other
NFC
RFIC: 4G CA TRx
PMIC WLS
ANT
tuner
PA modules incl. Duplex filters
Wireless content in a smart phone
• TBD
https://www.ifixit.com/Teardown/iPhone+6+Plus+Teardown/29206
© Centre for Wireless Communications (CWC), University of Oulu
S-o-A 2G/3G/4G RF transceiver with 8 band support
Dig
ita
l sig
na
l p
roce
ssin
g
imple
menting w
ire
less a
lgorith
ms
© Centre for Wireless Communications (CWC), University of Oulu
Competences of a modern RF engineer
Fundamentals
• Understand various applications of radios
• Master very well basic principles of communications
• Master very well basics of electronics design
• Excel in fundamentals of RF from Smith chart and matching to
noise and non-linearity
• Prototyping and measuring RF
• Computer tools for electronics design
© Centre for Wireless Communications (CWC), University of Oulu
Competences of a modern RF engineer
Advanced
• RF transceiver architectures
• RF system design and block level partitioning
• RF control algorithms
• IC design
• Communication circuits (LNA, PA, mixers, filters, amplifiers, ADCs, DAC’s, VCO’s, PLL’s,
digital for RF, …)
• Antenna design
• Radio propagation
• Various implementation technologies: fundamentals and their boundaries (CMOS,
BiCMOS, SiGe, HBT, GaN, SAW, BAW, PCB, …)
• Material physics in some cases when closely involved to electronics
• Digital signal processing for wireless
• Embedded programming
• …
© Centre for Wireless Communications (CWC), University of Oulu
Competences of a modern RF engineer
Capability to co-operate and learn new things
• With and from your close colleagues
• In cross-disciplinary topics
• On your own
Team work
© Centre for Wireless Communications (CWC), University of Oulu
Prerequisites for WCE-RF
Basic courses of electronics: Understanding small signal
behavior of a transistor in addition to circuit theory as
prerequisite for Electronics design II & III
Preferably basic course of radio technology/microwave
engineering to support further studies in Radio Engineering I
& II
© Centre for Wireless Communications (CWC), University of Oulu
WCE–RF Schedule ▬ 1st YearAutumn 2018Periods 1-2
Spring 2019Periods 3-4
Electronics Design III
(6 cr, 2 p)
Wireless
Communications I
(5 cr, 2 p)
Electronics Design II
(6 cr, 1 p)
RF Components and
Measurements
(5 cr, 4 p)
Finnish Language studies (2-10 cr) and/or optional studies depending on personal study plan
Radio Engineering I
(5 cr, 2 p)
Radio Channels
(5 cr, 4 p) or
Antennas (5 cr, 4 p) (one of these is mandatory for
RF option, one can be chosen
as an optional study course)
Radio Engineering II
(6 cr, 3 p)
Advanced Practical Training (3 cr) (recommended in summer 2019, training report will be
done on autumn 2019 term)
Broadband
Communications
Systems (5 cr, 1 p)
Commun. Signal
Processing I (5 cr, 3 p)
Statistical Signal
Processing (5 cr, 1 p)
Basic Studies Advanced Studies Optional Studies
Optional CourseOptional Course
© Centre for Wireless Communications (CWC), University of Oulu
WCE–RF Schedule ▬ 2nd Year
Electronic System
Design (5 cr, 1 p)
Diploma (M.Sc.) Thesis Work (30 cr, 2-4 p)
Finnish Language studies (2-10 cr) and/or optional studies to fulfill PSP requirements
Autumn 2019Periods 1-2
Spring 2020Periods 3-4
Communications
Circuit Design
(6 cr, 1 p)
Telecommunication Engineering Project (5 cr)
or
Electronics Design and Construction
Exercise (6 cr, 1-2 p)(one of these is mandatory)
Basic Studies Advanced Studies Optional Studies
Optional Course
Optional Course
Optional Course
© Centre for Wireless Communications (CWC), University of Oulu
Mode of Operation and Areas of InterestRF system analysis
AntennasIC designRF related algorithms
Complete platformsRF and antenna lab
© Centre for Wireless Communications (CWC), University of Oulu
RF Systems
• RF Transceiver architectures and implementation
- From systems to key building blocks for 5G and beyond
- RF implementation challenges with prototypes for 5G
- IC designs down to 22nm CMOS SOI
• Antennas and propagation
- Long-term experience from antenna implementations to propagation measurements
- MIMO over-the-air (OTA) test bed for mobile devices towards CTIA standardization
- Broadband antennas for infrastructure and antennas for wearable medical
applications
- 5G Channel Measurements
- mmW antennas for 5G
© Centre for Wireless Communications (CWC), University of Oulu
Facilities • State-of-the-art design tools from RF
system design (Agilent ADS and System
Vue), RFIC design (Cadence flow),
antenna design tools (CST,…) and PCB
design
• Industrial and research ecosystem in Oulu
region provides local facilities for all
necessary electronics manufacturing
(except IC that is done using MPW runs)
• Measurement capabilities for RF designs
currently up to 67GHz and 1GHz
bandwidth for modulated signals
(antennas up to 18GHz)
© Centre for Wireless Communications (CWC), University of Oulu
5G mmW – platform
28GHz radio module done in CWC
© Centre for Wireless Communications (CWC), University of Oulu
Phased array transceiver IC for 5G
‒ 15GHz
‒ Dual-channel for MIMO
‒ Psat=18dBm & NF =5.4dB
© Centre for Wireless Communications (CWC), University of Oulu
Predistortion of an antenna array
N. Tervo, J. Aikio, T. Tuovinen, T. Rahkonen and A. Parssinen,
"Digital predistortion of amplitude varying phased array
utilising over-the-air combining," 2017 IEEE MTT-S
International Microwave Symposium (IMS), Honololu, HI,
2017, pp. 1165-1168.
© Centre for Wireless Communications (CWC), University of Oulu
Sub-mmW / 5G antenna array
• 64 element massive-MIMO antenna array for 26.65-27.5 GHz bandwidth
• The array consists 2x2 linearly polarized element unit cells with low mutual coupling
• Maximum gain 20 dB
Marko Sonkki, Sami Myllymäki, Nuutti Tervo, Marko
Leinonen, Maciej Sobocinski, Giuseppe Destino, Aarno
Pärssinen, "Linearly Polarized 64-element Antenna
Array for mm-Wave Mobile Backhaul Application",
European Conference on Antennas and Propagation
(EUCAP2018), 9-13 April 2018, London, UK.
© Centre for Wireless Communications (CWC), University of Oulu
Radio channel measurements & modelling
• PropSound Channel Sounder
• Multi-dimensional Channel Sounder
• SISO, SIMO, MIMO and multi-user channels
• Virtual Antenna Array for massive-MIMO Channel Measurements
A. Roivainen, P. Kyösti, C. Ferreira Dias, V. Hovinen, N. Tervo, M.
Sonkki, M. Latva-aho. Parametrization and Validation of Geometry-
Based Stochastic Channel Model for Urban Small Cells at 10 GHz
IEEE Trans. Antennas Propag. Year: 2017, Volume: 65, Issue: 7
Devices & Circuit Technology THz communications materials & circuits
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connectivity
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Technologies
towards 6G
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